First set of demo apps for DevBytes videos

Change-Id: I4ae984cf776604cede32b98db6b1eb3cb6c59c7e

samples/devbytes/animation/Bouncer/AndroidManifest.xml

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+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.bouncer"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+    <uses-sdk
+        android:minSdkVersion="14"
+        android:targetSdkVersion="15" />
+
+    <application
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+        <activity
+            android:name=".Bouncer"
+            android:label="@string/title_activity_bouncer" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity
+            android:name=".Bouncer1"
+            android:label="@string/title_activity_bouncer1" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+                <activity
+            android:name=".Bouncer2"
+            android:label="@string/title_activity_bouncer2" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+                <activity
+            android:name="com.example.android.bouncer.Bouncer3"
+            android:label="@string/title_activity_bouncer3" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+            </application>
+
+</manifest>

samples/devbytes/animation/Bouncer/res/layout/activity_bouncer.xml

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+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:orientation="vertical"
+    android:background="#007F00"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" >
+
+    <view android:id="@+id/myview"
+        class="com.example.android.bouncer.Bouncer$MyView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        tools:context=".Bouncer" />
+
+</LinearLayout>

samples/devbytes/animation/Bouncer/res/layout/activity_bouncer1.xml

@@ -0,0 +1,28 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:orientation="vertical"
+    android:background="#007F00"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" >
+
+    <view android:id="@+id/myview"
+        class="com.example.android.bouncer.Bouncer1$MyView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        tools:context=".Bouncer" />
+
+</LinearLayout>

samples/devbytes/animation/Bouncer/res/layout/activity_bouncer2.xml

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+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:orientation="vertical"
+    android:background="#007F00"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" >
+
+    <view android:id="@+id/myview"
+        class="com.example.android.bouncer.Bouncer2$MyView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        tools:context=".Bouncer" />
+
+</LinearLayout>

samples/devbytes/animation/Bouncer/res/layout/activity_bouncer3.xml

@@ -0,0 +1,28 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:orientation="vertical"
+    android:background="#007F00"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" >
+
+    <view android:id="@+id/myview"
+        class="com.example.android.bouncer.Bouncer3$MyView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        tools:context=".Bouncer" />
+
+</LinearLayout>

samples/devbytes/animation/Bouncer/res/values-v11/styles.xml

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+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Holo.Light" />
+
+</resources>

samples/devbytes/animation/Bouncer/res/values-v14/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar" />
+
+</resources>

samples/devbytes/animation/Bouncer/res/values/strings.xml

@@ -0,0 +1,23 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <string name="app_name">Bouncer</string>
+    <string name="title_activity_bouncer">Bouncer</string>
+    <string name="title_activity_bouncer1">Bouncer1</string>
+    <string name="title_activity_bouncer2">Bouncer2</string>
+    <string name="title_activity_bouncer3">Bouncer3</string>
+
+</resources>

samples/devbytes/animation/Bouncer/res/values/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Light" />
+
+</resources>

samples/devbytes/animation/Bouncer/src/com/example/android/bouncer/Bouncer.java

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+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.bouncer;
+
+import android.animation.ValueAnimator;
+import android.animation.ValueAnimator.AnimatorUpdateListener;
+import android.app.Activity;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.os.Bundle;
+import android.util.AttributeSet;
+import android.view.View;
+
+/**
+ * This example shows simple uses of ValueAnimator, ObjectAnimator, and interpolators
+ * to control how a shape is moved around on the screen.
+ *
+ * The Bouncer1, Bouncer2, and Vouncer3 files are exactly like this one except for variations
+ * in how the animation is set up and run.
+ *
+ * Watch the associated video for this demo on the DevBytes channel of developer.android.com
+ * or on YouTube at https://www.youtube.com/watch?v=vCTcmPIKgpM.
+ */
+public class Bouncer extends Activity {
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_bouncer);
+    }
+
+    /**
+     * A custom view is used to paint the green background and the shape.
+     */
+    static class MyView extends View {
+
+        Bitmap mBitmap;
+        Paint paint = new Paint();
+        int mShapeX, mShapeY;
+        int mShapeW, mShapeH;
+
+        public MyView(Context context, AttributeSet attrs, int defStyle) {
+            super(context, attrs, defStyle);
+            setupShape();
+        }
+
+        public MyView(Context context, AttributeSet attrs) {
+            super(context, attrs);
+            setupShape();
+        }
+
+        public MyView(Context context) {
+            super(context);
+            setupShape();
+        }
+
+        private void setupShape() {
+            mBitmap = BitmapFactory.decodeResource(getResources(),
+                    R.drawable.electricsheep);
+            mShapeW = mBitmap.getWidth();
+            mShapeH = mBitmap.getHeight();
+            setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    startAnimation();
+                }
+            });
+        }
+
+        /**
+         * Moving the shape in x or y causes an invalidation of the area it used to occupy
+         * plus the area it now occupies.
+         */
+        public void setShapeX(int shapeX) {
+            int minX = mShapeX;
+            int maxX = mShapeX + mShapeW;
+            mShapeX = shapeX;
+            minX = Math.min(mShapeX, minX);
+            maxX = Math.max(mShapeX + mShapeW, maxX);
+            invalidate(minX, mShapeY, maxX, mShapeY + mShapeH);
+        }
+
+        /**
+         * Moving the shape in x or y causes an invalidation of the area it used to occupy
+         * plus the area it now occupies.
+         */
+        public void setShapeY(int shapeY) {
+            int minY = mShapeY;
+            int maxY = mShapeY + mShapeH;
+            mShapeY = shapeY;
+            minY = Math.min(mShapeY, minY);
+            maxY = Math.max(mShapeY + mShapeH, maxY);
+            invalidate(mShapeX, minY, mShapeX + mShapeW, maxY);
+        }
+
+        @Override
+        protected void onSizeChanged(int w, int h, int oldw, int oldh) {
+            mShapeX = (w - mBitmap.getWidth()) / 2;
+            mShapeY = 0;
+        }
+
+        @Override
+        protected void onDraw(Canvas canvas) {
+            canvas.drawBitmap(mBitmap, mShapeX, mShapeY, paint);
+        }
+
+        void startAnimation() {
+            // This version uses ValueAnimator, which requires adding an update
+            // listener and manually updating the shape position on each frame.
+            ValueAnimator anim = getValueAnimator();
+            anim.start();
+        }
+
+        ValueAnimator getValueAnimator() {
+            ValueAnimator anim = ValueAnimator.ofFloat(0, 1);
+            anim.addUpdateListener(new AnimatorUpdateListener() {
+                @Override
+                public void onAnimationUpdate(ValueAnimator animation) {
+                    setShapeY((int) (animation.getAnimatedFraction() *
+                            (getHeight() - mShapeH)));
+                }
+            });
+            return anim;
+        }
+
+    }
+}

samples/devbytes/animation/Bouncer/src/com/example/android/bouncer/Bouncer1.java

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+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.bouncer;
+
+import android.animation.ValueAnimator;
+import android.animation.ValueAnimator.AnimatorUpdateListener;
+import android.app.Activity;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.os.Bundle;
+import android.util.AttributeSet;
+import android.view.View;
+
+/**
+ * See the comments in Bouncer for the overall functionality of this app. Changes for this
+ * variation are down in the animation setup code.
+ */
+public class Bouncer1 extends Activity {
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_bouncer1);
+    }
+
+    static class MyView extends View {
+
+        Bitmap mBitmap;
+        Paint paint = new Paint();
+        int mShapeX, mShapeY;
+        int mShapeW, mShapeH;
+
+        public MyView(Context context, AttributeSet attrs, int defStyle) {
+            super(context, attrs, defStyle);
+            setupShape();
+        }
+
+        public MyView(Context context, AttributeSet attrs) {
+            super(context, attrs);
+            setupShape();
+        }
+
+        public MyView(Context context) {
+            super(context);
+            setupShape();
+        }
+
+        public void setShapeX(int shapeX) {
+            int minX = mShapeX;
+            int maxX = mShapeX + mShapeW;
+            mShapeX = shapeX;
+            minX = Math.min(mShapeX, minX);
+            maxX = Math.max(mShapeX + mShapeW, maxX);
+            invalidate(minX, mShapeY, maxX, mShapeY + mShapeH);
+        }
+
+        public void setShapeY(int shapeY) {
+            int minY = mShapeY;
+            int maxY = mShapeY + mShapeH;
+            mShapeY = shapeY;
+            minY = Math.min(mShapeY, minY);
+            maxY = Math.max(mShapeY + mShapeH, maxY);
+            invalidate(mShapeX, minY, mShapeX + mShapeW, maxY);
+        }
+
+        private void setupShape() {
+            mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.electricsheep);
+            mShapeW = mBitmap.getWidth();
+            mShapeH = mBitmap.getHeight();
+            setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    startAnimation();
+                }
+            });
+        }
+
+        @Override
+        protected void onSizeChanged(int w, int h, int oldw, int oldh) {
+            mShapeX = (w - mBitmap.getWidth()) / 2;
+            mShapeY = 0;
+        }
+
+        @Override
+        protected void onDraw(Canvas canvas) {
+            canvas.drawBitmap(mBitmap, mShapeX, mShapeY, paint);
+        }
+
+        void startAnimation() {
+            ValueAnimator anim = getValueAnimator();
+            // In this variation, we put the shape into an infinite bounce, where it keeps moving
+            // up and down. Note that it's still not actually "bouncing" because it just uses
+            // default time interpolation.
+            anim.setRepeatCount(ValueAnimator.INFINITE);
+            anim.setRepeatMode(ValueAnimator.REVERSE);
+            anim.start();
+        }
+
+        ValueAnimator getValueAnimator() {
+            ValueAnimator anim = ValueAnimator.ofFloat(0, 1);
+            anim.addUpdateListener(new AnimatorUpdateListener() {
+                @Override
+                public void onAnimationUpdate(ValueAnimator animation) {
+                    setShapeY((int) (animation.getAnimatedFraction() * (getHeight() - mShapeH)));
+                }
+            });
+            return anim;
+        }
+
+    }
+}

samples/devbytes/animation/Bouncer/src/com/example/android/bouncer/Bouncer2.java

@@ -0,0 +1,130 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.bouncer;
+
+import android.animation.ValueAnimator;
+import android.animation.ValueAnimator.AnimatorUpdateListener;
+import android.app.Activity;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.os.Bundle;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.animation.AccelerateInterpolator;
+
+/**
+ * See the comments in Bouncer for the overall functionality of this app. Changes for this
+ * variation are down in the animation setup code.
+ */
+public class Bouncer2 extends Activity {
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_bouncer2);
+    }
+
+    static class MyView extends View {
+
+        Bitmap mBitmap;
+        Paint paint = new Paint();
+        int mShapeX, mShapeY;
+        int mShapeW, mShapeH;
+
+        public MyView(Context context, AttributeSet attrs, int defStyle) {
+            super(context, attrs, defStyle);
+            setupShape();
+        }
+
+        public MyView(Context context, AttributeSet attrs) {
+            super(context, attrs);
+            setupShape();
+        }
+
+        public MyView(Context context) {
+            super(context);
+            setupShape();
+        }
+
+        public void setShapeX(int shapeX) {
+            int minX = mShapeX;
+            int maxX = mShapeX + mShapeW;
+            mShapeX = shapeX;
+            minX = Math.min(mShapeX, minX);
+            maxX = Math.max(mShapeX + mShapeW, maxX);
+            invalidate(minX, mShapeY, maxX, mShapeY + mShapeH);
+        }
+
+        public void setShapeY(int shapeY) {
+            int minY = mShapeY;
+            int maxY = mShapeY + mShapeH;
+            mShapeY = shapeY;
+            minY = Math.min(mShapeY, minY);
+            maxY = Math.max(mShapeY + mShapeH, maxY);
+            invalidate(mShapeX, minY, mShapeX + mShapeW, maxY);
+        }
+
+        private void setupShape() {
+            mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.electricsheep);
+            mShapeW = mBitmap.getWidth();
+            mShapeH = mBitmap.getHeight();
+            setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    startAnimation();
+                }
+            });
+        }
+
+        @Override
+        protected void onSizeChanged(int w, int h, int oldw, int oldh) {
+            mShapeX = (w - mBitmap.getWidth()) / 2;
+            mShapeY = 0;
+        }
+
+        @Override
+        protected void onDraw(Canvas canvas) {
+            canvas.drawBitmap(mBitmap, mShapeX, mShapeY, paint);
+        }
+
+        void startAnimation() {
+            ValueAnimator anim = getValueAnimator();
+            anim.setRepeatCount(ValueAnimator.INFINITE);
+            anim.setRepeatMode(ValueAnimator.REVERSE);
+            // This variation finally has the shape bouncing, due to the use of an
+            // AccelerateInterpolator, which speeds up as the animation proceed. Note that
+            // when the animation reverses, the interpolator acts in reverse, decelerating
+            // movement.
+            anim.setInterpolator(new AccelerateInterpolator());
+            anim.start();
+        }
+
+        ValueAnimator getValueAnimator() {
+            ValueAnimator anim = ValueAnimator.ofFloat(0, 1);
+            anim.addUpdateListener(new AnimatorUpdateListener() {
+                @Override
+                public void onAnimationUpdate(ValueAnimator animation) {
+                    setShapeY((int) (animation.getAnimatedFraction() * (getHeight() - mShapeH)));
+                }
+            });
+            return anim;
+        }
+    }
+}

samples/devbytes/animation/Bouncer/src/com/example/android/bouncer/Bouncer3.java

@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.bouncer;
+
+import android.animation.ObjectAnimator;
+import android.animation.ValueAnimator;
+import android.app.Activity;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.os.Bundle;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.animation.AccelerateInterpolator;
+
+/**
+ * See the comments in Bouncer for the overall functionality of this app. Changes for this
+ * variation are down in the animation setup code.
+ */
+public class Bouncer3 extends Activity {
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_bouncer3);
+    }
+
+    static class MyView extends View {
+
+        Bitmap mBitmap;
+        Paint paint = new Paint();
+        int mShapeX, mShapeY;
+        int mShapeW, mShapeH;
+
+        public MyView(Context context, AttributeSet attrs, int defStyle) {
+            super(context, attrs, defStyle);
+            setupShape();
+        }
+
+        public MyView(Context context, AttributeSet attrs) {
+            super(context, attrs);
+            setupShape();
+        }
+
+        public MyView(Context context) {
+            super(context);
+            setupShape();
+        }
+
+        public void setShapeX(int shapeX) {
+            int minX = mShapeX;
+            int maxX = mShapeX + mShapeW;
+            mShapeX = shapeX;
+            minX = Math.min(mShapeX, minX);
+            maxX = Math.max(mShapeX + mShapeW, maxX);
+            invalidate(minX, mShapeY, maxX, mShapeY + mShapeH);
+        }
+
+        public void setShapeY(int shapeY) {
+            int minY = mShapeY;
+            int maxY = mShapeY + mShapeH;
+            mShapeY = shapeY;
+            minY = Math.min(mShapeY, minY);
+            maxY = Math.max(mShapeY + mShapeH, maxY);
+            invalidate(mShapeX, minY, mShapeX + mShapeW, maxY);
+        }
+
+        private void setupShape() {
+            mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.electricsheep);
+            mShapeW = mBitmap.getWidth();
+            mShapeH = mBitmap.getHeight();
+            setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    startAnimation();
+                }
+            });
+        }
+
+        @Override
+        protected void onSizeChanged(int w, int h, int oldw, int oldh) {
+            mShapeX = (w - mBitmap.getWidth()) / 2;
+            mShapeY = 0;
+        }
+
+        @Override
+        protected void onDraw(Canvas canvas) {
+            canvas.drawBitmap(mBitmap, mShapeX, mShapeY, paint);
+        }
+
+        void startAnimation() {
+            // This variation uses an ObjectAnimator. The functionality is exactly the same as
+            // in Bouncer2, but this time the boilerplate code is greatly reduced because we
+            // tell ObjectAnimator to automatically animate the target object for us, so we no
+            // longer need to listen for frame updates and do that work ourselves.
+            ObjectAnimator anim = getObjectAnimator();
+            anim.setRepeatCount(ValueAnimator.INFINITE);
+            anim.setRepeatMode(ValueAnimator.REVERSE);
+            anim.setInterpolator(new AccelerateInterpolator());
+            anim.start();
+        }
+
+        ObjectAnimator getObjectAnimator() {
+            return ObjectAnimator.ofInt(this, "shapeY", 0, (getHeight() - mShapeH));
+        }
+
+    }
+}

samples/devbytes/animation/CrossFading/AndroidManifest.xml

@@ -0,0 +1,39 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.crossfading"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+    <uses-sdk
+        android:minSdkVersion="8"
+        android:targetSdkVersion="15" />
+
+    <application
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+        <activity
+            android:name="com.example.android.crossfading.CrossFading"
+            android:label="@string/title_activity_cross_fading" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

samples/devbytes/animation/CrossFading/res/layout/activity_cross_fading.xml

@@ -0,0 +1,27 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" >
+
+    <ImageView
+        android:id="@+id/imageview"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        />
+
+</LinearLayout>

samples/devbytes/animation/CrossFading/res/values-v11/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Holo.Light" />
+
+</resources>

samples/devbytes/animation/CrossFading/res/values-v14/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar" />
+
+</resources>

samples/devbytes/animation/CrossFading/res/values/strings.xml

@@ -0,0 +1,20 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <string name="app_name">CrossFading</string>
+    <string name="title_activity_cross_fading">CrossFading</string>
+
+</resources>

samples/devbytes/animation/CrossFading/res/values/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Light" />
+
+</resources>

samples/devbytes/animation/CrossFading/src/com/example/android/crossfading/CrossFading.java

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.crossfading;
+
+import android.app.Activity;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.TransitionDrawable;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.ImageView;
+
+/**
+ * This example shows how to use TransitionDrawable to perform a simple cross-fade effect
+ * between two drawables.
+ *
+ * Watch the associated video for this demo on the DevBytes channel of developer.android.com
+ * or on YouTube at https://www.youtube.com/watch?v=atH3o2uh_94.
+ */
+public class CrossFading extends Activity {
+
+    int mCurrentDrawable = 0;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_cross_fading);
+
+        final ImageView imageview = (ImageView) findViewById(R.id.imageview);
+
+        // Create red and green bitmaps to cross-fade between
+        Bitmap bitmap0 = Bitmap.createBitmap(500, 500, Bitmap.Config.ARGB_8888);
+        Bitmap bitmap1 = Bitmap.createBitmap(500, 500, Bitmap.Config.ARGB_8888);
+        Canvas canvas = new Canvas(bitmap0);
+        canvas.drawColor(Color.RED);
+        canvas = new Canvas(bitmap1);
+        canvas.drawColor(Color.GREEN);
+        BitmapDrawable drawables[] = new BitmapDrawable[2];
+        drawables[0] = new BitmapDrawable(getResources(), bitmap0);
+        drawables[1] = new BitmapDrawable(getResources(), bitmap1);
+
+        // Add the red/green bitmap drawables to a TransitionDrawable. They are layered
+        // in the transition drawalbe. The cross-fade effect happens by fading one out and the
+        // other in.
+        final TransitionDrawable crossfader = new TransitionDrawable(drawables);
+        imageview.setImageDrawable(crossfader);
+
+        // Clicking on the drawable will cause the cross-fade effect to run. Depending on
+        // which drawable is currently being shown, we either 'start' or 'reverse' the
+        // transition, which determines which drawable is faded out/in during the transition.
+        imageview.setOnClickListener(new View.OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                if (mCurrentDrawable == 0) {
+                    crossfader.startTransition(500);
+                    mCurrentDrawable = 1;
+                } else {
+                    crossfader.reverseTransition(500);
+                    mCurrentDrawable = 0;
+                }
+            }
+        });
+    }
+}

samples/devbytes/animation/KeyframeAnimation/AndroidManifest.xml

@@ -0,0 +1,39 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.keyframeanimation"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+    <uses-sdk
+        android:minSdkVersion="8"
+        android:targetSdkVersion="15" />
+
+    <application
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+        <activity
+            android:name="com.example.android.keyframeanimation.KeyframeAnimation"
+            android:label="@string/title_activity_keyframe_animation" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

samples/devbytes/animation/KeyframeAnimation/res/layout/activity_keyframe_animation.xml

@@ -0,0 +1,28 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" >
+
+    <ImageView
+        android:id="@+id/imageview"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerHorizontal="true"
+        android:layout_centerVertical="true"
+        tools:context=".KeyframeAnimation" />
+
+</RelativeLayout>

samples/devbytes/animation/KeyframeAnimation/res/values-v11/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Holo.Light" />
+
+</resources>

samples/devbytes/animation/KeyframeAnimation/res/values-v14/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar" />
+
+</resources>

samples/devbytes/animation/KeyframeAnimation/res/values/strings.xml

@@ -0,0 +1,20 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <string name="app_name">KeyframeAnimation</string>
+    <string name="title_activity_keyframe_animation">KeyframeAnimation</string>
+
+</resources>

samples/devbytes/animation/KeyframeAnimation/res/values/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Light" />
+
+</resources>

samples/devbytes/animation/KeyframeAnimation/src/com/example/android/keyframeanimation/KeyframeAnimation.java

@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.keyframeanimation;
+
+import android.app.Activity;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.graphics.drawable.AnimationDrawable;
+import android.graphics.drawable.BitmapDrawable;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.ImageView;
+
+/**
+ * This example shows how to use AnimationDrawable to construct a keyframe animation where each
+ * frame is shown for a specified duration.
+ *
+ * Watch the associated video for this demo on the DevBytes channel of developer.android.com
+ * or on YouTube at https://www.youtube.com/watch?v=V3ksidLf7vA.
+ */
+public class KeyframeAnimation extends Activity {
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_keyframe_animation);
+
+        ImageView imageview = (ImageView) findViewById(R.id.imageview);
+
+        // Create the AnimationDrawable in which we will store all frames of the animation
+        final AnimationDrawable animationDrawable = new AnimationDrawable();
+        for (int i = 0; i < 10; ++i) {
+            animationDrawable.addFrame(getDrawableForFrameNumber(i), 300);
+        }
+        // Run until we say stop
+        animationDrawable.setOneShot(false);
+
+        imageview.setImageDrawable(animationDrawable);
+
+        // When the user clicks on the image, toggle the animation on/off
+        imageview.setOnClickListener(new View.OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                if (animationDrawable.isRunning()) {
+                    animationDrawable.stop();
+                } else {
+                    animationDrawable.start();
+                }
+            }
+        });
+    }
+
+    /**
+     * The 'frames' in this app are nothing more than a gray background with text indicating
+     * the number of the frame.
+     */
+    private BitmapDrawable getDrawableForFrameNumber(int frameNumber) {
+        Bitmap bitmap = Bitmap.createBitmap(400, 400, Bitmap.Config.ARGB_8888);
+        Canvas canvas = new Canvas(bitmap);
+        canvas.drawColor(Color.GRAY);
+        Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
+        paint.setTextSize(80);
+        paint.setColor(Color.BLACK);
+        canvas.drawText("Frame " + frameNumber, 40, 220, paint);
+        return new BitmapDrawable(getResources(), bitmap);
+    }
+
+}

samples/devbytes/animation/LayoutTransChanging/AndroidManifest.xml

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+      package="com.example.android.layouttranschanging"
+      android:versionCode="1"
+      android:versionName="1.0">
+    <uses-sdk android:minSdkVersion="16"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <application
+      android:icon="@drawable/icon"
+      android:label="@string/app_name"
+      android:hardwareAccelerated="true">
+        <activity android:label="@string/app_name"
+                  android:name="com.example.android.layouttranschanging.LayoutTransChanging">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+    </application>
+
+</manifest>

samples/devbytes/animation/LayoutTransChanging/res/layout/main.xml

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+    <LinearLayout
+        android:orientation="horizontal"
+        android:layout_width="fill_parent"
+        android:layout_height="wrap_content">
+        <Button
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/addButton"
+            android:id="@+id/addButton"/>
+        <Button
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/removeButton"
+            android:id="@+id/removeButton"/>
+    </LinearLayout>
+    <LinearLayout
+        android:orientation="vertical"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:animateLayoutChanges="true"
+        android:id="@+id/container"/>
+</LinearLayout>

samples/devbytes/animation/LayoutTransChanging/res/values/strings.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+    <string name="app_name">LayoutTransChanging</string>
+    <string name="addButton">Add Item</string>
+    <string name="removeButton">Remove Item</string>
+</resources>

samples/devbytes/animation/LayoutTransChanging/src/com/example/android/layouttranschanging/LayoutTransChanging.java

@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.layouttranschanging;
+
+import android.animation.LayoutTransition;
+import android.app.Activity;
+import android.content.Context;
+import android.os.Bundle;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.LinearLayout;
+import android.widget.LinearLayout.LayoutParams;
+
+/**
+ * This example shows how to use LayoutTransition to animate simple changes in a layout
+ * container.
+ *
+ * Watch the associated video for this demo on the DevBytes channel of developer.android.com
+ * or on YouTube at https://www.youtube.com/watch?v=55wLsaWpQ4g.
+ */
+public class LayoutTransChanging extends Activity {
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.main);
+
+        final Button addButton =
+                (Button) findViewById(R.id.addButton);
+        final Button removeButton =
+                (Button) findViewById(R.id.removeButton);
+        final LinearLayout container =
+                (LinearLayout) findViewById(R.id.container);
+        final Context context = this;
+
+        // Start with two views
+        for (int i = 0; i < 2; ++i) {
+            container.addView(new ColoredView(this));
+        }
+
+        addButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                // Adding a view will cause a LayoutTransition animation
+                container.addView(new ColoredView(context), 1);
+            }
+        });
+
+        removeButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (container.getChildCount() > 0) {
+                    // Removing a view will cause a LayoutTransition animation
+                    container.removeViewAt(Math.min(1, container.getChildCount() - 1));
+                }
+            }
+        });
+
+        // Note that this assumes a LayoutTransition is set on the container, which is the
+        // case here because the container has the attribute "animateLayoutChanges" set to true
+        // in the layout file. You can also call setLayoutTransition(new LayoutTransition()) in
+        // code to set a LayoutTransition on any container.
+        LayoutTransition transition = container.getLayoutTransition();
+
+        // New capability as of Jellybean; monitor the container for *all* layout changes
+        // (not just add/remove/visibility changes) and animate these changes as well.
+        transition.enableTransitionType(LayoutTransition.CHANGING);
+    }
+
+    /**
+     * Custom view painted with a random background color and two different sizes which are
+     * toggled between due to user interaction.
+     */
+    private static class ColoredView extends View {
+
+        private boolean mExpanded = false;
+
+        private LayoutParams mCompressedParams = new LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT, 50);
+
+        private LayoutParams mExpandedParams = new LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT, 200);
+
+        private ColoredView(Context context) {
+            super(context);
+            int red = (int)(Math.random() * 128 + 127);
+            int green = (int)(Math.random() * 128 + 127);
+            int blue = (int)(Math.random() * 128 + 127);
+            int color = 0xff << 24 | (red << 16) |
+                    (green << 8) | blue;
+            setBackgroundColor(color);
+            setLayoutParams(mCompressedParams);
+            setOnClickListener(new OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    // Size changes will cause a LayoutTransition animation if the CHANGING
+                    // transition is enabled
+                    setLayoutParams(mExpanded ? mCompressedParams : mExpandedParams);
+                    mExpanded = !mExpanded;
+                    requestLayout();
+                }
+            });
+        }
+    }
+}

samples/devbytes/animation/ListViewAnimations/AndroidManifest.xml

@@ -0,0 +1,40 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.listviewanimations"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+    <uses-sdk
+        android:minSdkVersion="16"
+        android:targetSdkVersion="16" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+        <activity
+            android:name="com.example.android.listviewanimations.ListViewAnimations"
+            android:label="@string/app_name" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

samples/devbytes/animation/ListViewAnimations/res/layout/activity_list_view_animations.xml

@@ -0,0 +1,43 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ListViewAnimations" >
+
+    <LinearLayout
+        android:orientation="horizontal"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content">
+        <CheckBox
+            android:id="@+id/vpaCB"
+            android:text="@string/viewpropertyanimator"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content" />
+        <CheckBox
+            android:id="@+id/setTransientStateCB"
+            android:text="@string/transient_state"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content" />
+    </LinearLayout>
+
+    <ListView
+        android:id="@+id/listview"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"/>
+
+</LinearLayout>

samples/devbytes/animation/ListViewAnimations/res/values-v11/styles.xml

@@ -0,0 +1,25 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <!--
+        Base application theme for API 11+. This theme completely replaces
+        AppBaseTheme from res/values/styles.xml on API 11+ devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Holo.Light">
+        <!-- API 11 theme customizations can go here. -->
+    </style>
+
+</resources>

samples/devbytes/animation/ListViewAnimations/res/values-v14/styles.xml

@@ -0,0 +1,26 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <!--
+        Base application theme for API 14+. This theme completely replaces
+        AppBaseTheme from BOTH res/values/styles.xml and
+        res/values-v11/styles.xml on API 14+ devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Holo.Light.DarkActionBar">
+        <!-- API 14 theme customizations can go here. -->
+    </style>
+
+</resources>

samples/devbytes/animation/ListViewAnimations/res/values/strings.xml

@@ -0,0 +1,21 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <string name="app_name">ListViewAnimations</string>
+    <string name="viewpropertyanimator">ViewPropertyAnimator</string>
+    <string name="transient_state">Transient State</string>
+
+</resources>

samples/devbytes/animation/ListViewAnimations/res/values/styles.xml

@@ -0,0 +1,34 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <!--
+        Base application theme, dependent on API level. This theme is replaced
+        by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Light">
+        <!--
+            Theme customizations available in newer API levels can go in
+            res/values-vXX/styles.xml, while customizations related to
+            backward-compatibility can go here.
+        -->
+    </style>
+
+    <!-- Application theme. -->
+    <style name="AppTheme" parent="AppBaseTheme">
+        <!-- All customizations that are NOT specific to a particular API-level can go here. -->
+    </style>
+
+</resources>

samples/devbytes/animation/ListViewAnimations/src/com/example/android/listviewanimations/Cheeses.java

@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.listviewanimations;
+
+public class Cheeses {
+
+    public static final String[] sCheeseStrings = {
+            "Abbaye de Belloc", "Abbaye du Mont des Cats", "Abertam", "Abondance", "Ackawi",
+            "Acorn", "Adelost", "Affidelice au Chablis", "Afuega'l Pitu", "Airag", "Airedale",
+            "Aisy Cendre", "Allgauer Emmentaler", "Alverca", "Ambert", "American Cheese",
+            "Ami du Chambertin", "Anejo Enchilado", "Anneau du Vic-Bilh", "Anthoriro", "Appenzell",
+            "Aragon", "Ardi Gasna", "Ardrahan", "Armenian String", "Aromes au Gene de Marc",
+            "Asadero", "Asiago", "Aubisque Pyrenees", "Autun", "Avaxtskyr", "Baby Swiss",
+            "Babybel", "Baguette Laonnaise", "Bakers", "Baladi", "Balaton", "Bandal", "Banon",
+            "Barry's Bay Cheddar", "Basing", "Basket Cheese", "Bath Cheese", "Bavarian Bergkase",
+            "Baylough", "Beaufort", "Beauvoorde", "Beenleigh Blue", "Beer Cheese", "Bel Paese",
+            "Bergader", "Bergere Bleue", "Berkswell", "Beyaz Peynir", "Bierkase", "Bishop Kennedy",
+            "Blarney", "Bleu d'Auvergne", "Bleu de Gex", "Bleu de Laqueuille",
+            "Bleu de Septmoncel", "Bleu Des Causses", "Blue", "Blue Castello", "Blue Rathgore",
+            "Blue Vein (Australian)", "Blue Vein Cheeses", "Bocconcini", "Bocconcini (Australian)",
+            "Boeren Leidenkaas", "Bonchester", "Bosworth", "Bougon", "Boule Du Roves",
+            "Boulette d'Avesnes", "Boursault", "Boursin", "Bouyssou", "Bra", "Braudostur",
+            "Breakfast Cheese", "Brebis du Lavort", "Brebis du Lochois", "Brebis du Puyfaucon",
+            "Bresse Bleu", "Brick", "Brie", "Brie de Meaux", "Brie de Melun", "Brillat-Savarin",
+            "Brin", "Brin d' Amour", "Brin d'Amour", "Brinza (Burduf Brinza)",
+            "Briquette de Brebis", "Briquette du Forez", "Broccio", "Broccio Demi-Affine",
+            "Brousse du Rove", "Bruder Basil", "Brusselae Kaas (Fromage de Bruxelles)", "Bryndza",
+            "Buchette d'Anjou", "Buffalo", "Burgos", "Butte", "Butterkase", "Button (Innes)",
+            "Buxton Blue", "Cabecou", "Caboc", "Cabrales", "Cachaille", "Caciocavallo", "Caciotta",
+            "Caerphilly", "Cairnsmore", "Calenzana", "Cambazola", "Camembert de Normandie",
+            "Canadian Cheddar", "Canestrato", "Cantal", "Caprice des Dieux", "Capricorn Goat",
+            "Capriole Banon", "Carre de l'Est", "Casciotta di Urbino", "Cashel Blue", "Castellano",
+            "Castelleno", "Castelmagno", "Castelo Branco", "Castigliano", "Cathelain",
+            "Celtic Promise", "Cendre d'Olivet", "Cerney", "Chabichou", "Chabichou du Poitou",
+            "Chabis de Gatine", "Chaource", "Charolais", "Chaumes", "Cheddar",
+            "Cheddar Clothbound", "Cheshire", "Chevres", "Chevrotin des Aravis", "Chontaleno",
+            "Civray", "Coeur de Camembert au Calvados", "Coeur de Chevre", "Colby", "Cold Pack",
+            "Comte", "Coolea", "Cooleney", "Coquetdale", "Corleggy", "Cornish Pepper",
+            "Cotherstone", "Cotija", "Cottage Cheese", "Cottage Cheese (Australian)",
+            "Cougar Gold", "Coulommiers", "Coverdale", "Crayeux de Roncq", "Cream Cheese",
+            "Cream Havarti", "Crema Agria", "Crema Mexicana", "Creme Fraiche", "Crescenza",
+            "Croghan", "Crottin de Chavignol", "Crottin du Chavignol", "Crowdie", "Crowley",
+            "Cuajada", "Curd", "Cure Nantais", "Curworthy", "Cwmtawe Pecorino",
+            "Cypress Grove Chevre", "Danablu (Danish Blue)", "Danbo", "Danish Fontina",
+            "Daralagjazsky", "Dauphin", "Delice des Fiouves", "Denhany Dorset Drum", "Derby",
+            "Dessertnyj Belyj", "Devon Blue", "Devon Garland", "Dolcelatte", "Doolin",
+            "Doppelrhamstufel", "Dorset Blue Vinney", "Double Gloucester", "Double Worcester",
+            "Dreux a la Feuille", "Dry Jack", "Duddleswell", "Dunbarra", "Dunlop", "Dunsyre Blue",
+            "Duroblando", "Durrus", "Dutch Mimolette (Commissiekaas)", "Edam", "Edelpilz",
+            "Emental Grand Cru", "Emlett", "Emmental", "Epoisses de Bourgogne", "Esbareich",
+            "Esrom", "Etorki", "Evansdale Farmhouse Brie", "Evora De L'Alentejo", "Exmoor Blue",
+            "Explorateur", "Feta", "Feta (Australian)", "Figue", "Filetta", "Fin-de-Siecle",
+            "Finlandia Swiss", "Finn", "Fiore Sardo", "Fleur du Maquis", "Flor de Guia",
+            "Flower Marie", "Folded", "Folded cheese with mint", "Fondant de Brebis",
+            "Fontainebleau", "Fontal", "Fontina Val d'Aosta", "Formaggio di capra", "Fougerus",
+            "Four Herb Gouda", "Fourme d' Ambert", "Fourme de Haute Loire", "Fourme de Montbrison",
+            "Fresh Jack", "Fresh Mozzarella", "Fresh Ricotta", "Fresh Truffles", "Fribourgeois",
+            "Friesekaas", "Friesian", "Friesla", "Frinault", "Fromage a Raclette", "Fromage Corse",
+            "Fromage de Montagne de Savoie", "Fromage Frais", "Fruit Cream Cheese",
+            "Frying Cheese", "Fynbo", "Gabriel", "Galette du Paludier", "Galette Lyonnaise",
+            "Galloway Goat's Milk Gems", "Gammelost", "Gaperon a l'Ail", "Garrotxa", "Gastanberra",
+            "Geitost", "Gippsland Blue", "Gjetost", "Gloucester", "Golden Cross", "Gorgonzola",
+            "Gornyaltajski", "Gospel Green", "Gouda", "Goutu", "Gowrie", "Grabetto", "Graddost",
+            "Grafton Village Cheddar", "Grana", "Grana Padano", "Grand Vatel",
+            "Grataron d' Areches", "Gratte-Paille", "Graviera", "Greuilh", "Greve",
+            "Gris de Lille", "Gruyere", "Gubbeen", "Guerbigny", "Halloumi",
+            "Halloumy (Australian)", "Haloumi-Style Cheese", "Harbourne Blue", "Havarti",
+            "Heidi Gruyere", "Hereford Hop", "Herrgardsost", "Herriot Farmhouse", "Herve",
+            "Hipi Iti", "Hubbardston Blue Cow", "Hushallsost", "Iberico", "Idaho Goatster",
+            "Idiazabal", "Il Boschetto al Tartufo", "Ile d'Yeu", "Isle of Mull", "Jarlsberg",
+            "Jermi Tortes", "Jibneh Arabieh", "Jindi Brie", "Jubilee Blue", "Juustoleipa",
+            "Kadchgall", "Kaseri", "Kashta", "Kefalotyri", "Kenafa", "Kernhem", "Kervella Affine",
+            "Kikorangi", "King Island Cape Wickham Brie", "King River Gold", "Klosterkaese",
+            "Knockalara", "Kugelkase", "L'Aveyronnais", "L'Ecir de l'Aubrac", "La Taupiniere",
+            "La Vache Qui Rit", "Laguiole", "Lairobell", "Lajta", "Lanark Blue", "Lancashire",
+            "Langres", "Lappi", "Laruns", "Lavistown", "Le Brin", "Le Fium Orbo", "Le Lacandou",
+            "Le Roule", "Leafield", "Lebbene", "Leerdammer", "Leicester", "Leyden", "Limburger",
+            "Lincolnshire Poacher", "Lingot Saint Bousquet d'Orb", "Liptauer", "Little Rydings",
+            "Livarot", "Llanboidy", "Llanglofan Farmhouse", "Loch Arthur Farmhouse",
+            "Loddiswell Avondale", "Longhorn", "Lou Palou", "Lou Pevre", "Lyonnais", "Maasdam",
+            "Macconais", "Mahoe Aged Gouda", "Mahon", "Malvern", "Mamirolle", "Manchego",
+            "Manouri", "Manur", "Marble Cheddar", "Marbled Cheeses", "Maredsous", "Margotin",
+            "Maribo", "Maroilles", "Mascares", "Mascarpone", "Mascarpone (Australian)",
+            "Mascarpone Torta", "Matocq", "Maytag Blue", "Meira", "Menallack Farmhouse",
+            "Menonita", "Meredith Blue", "Mesost", "Metton (Cancoillotte)", "Meyer Vintage Gouda",
+            "Mihalic Peynir", "Milleens", "Mimolette", "Mine-Gabhar", "Mini Baby Bells", "Mixte",
+            "Molbo", "Monastery Cheeses", "Mondseer", "Mont D'or Lyonnais", "Montasio",
+            "Monterey Jack", "Monterey Jack Dry", "Morbier", "Morbier Cru de Montagne",
+            "Mothais a la Feuille", "Mozzarella", "Mozzarella (Australian)",
+            "Mozzarella di Bufala", "Mozzarella Fresh, in water", "Mozzarella Rolls", "Munster",
+            "Murol", "Mycella", "Myzithra", "Naboulsi", "Nantais", "Neufchatel",
+            "Neufchatel (Australian)", "Niolo", "Nokkelost", "Northumberland", "Oaxaca",
+            "Olde York", "Olivet au Foin", "Olivet Bleu", "Olivet Cendre",
+            "Orkney Extra Mature Cheddar", "Orla", "Oschtjepka", "Ossau Fermier", "Ossau-Iraty",
+            "Oszczypek", "Oxford Blue", "P'tit Berrichon", "Palet de Babligny", "Paneer", "Panela",
+            "Pannerone", "Pant ys Gawn", "Parmesan (Parmigiano)", "Parmigiano Reggiano",
+            "Pas de l'Escalette", "Passendale", "Pasteurized Processed", "Pate de Fromage",
+            "Patefine Fort", "Pave d'Affinois", "Pave d'Auge", "Pave de Chirac", "Pave du Berry",
+            "Pecorino", "Pecorino in Walnut Leaves", "Pecorino Romano", "Peekskill Pyramid",
+            "Pelardon des Cevennes", "Pelardon des Corbieres", "Penamellera", "Penbryn",
+            "Pencarreg", "Perail de Brebis", "Petit Morin", "Petit Pardou", "Petit-Suisse",
+            "Picodon de Chevre", "Picos de Europa", "Piora", "Pithtviers au Foin",
+            "Plateau de Herve", "Plymouth Cheese", "Podhalanski", "Poivre d'Ane", "Polkolbin",
+            "Pont l'Eveque", "Port Nicholson", "Port-Salut", "Postel", "Pouligny-Saint-Pierre",
+            "Pourly", "Prastost", "Pressato", "Prince-Jean", "Processed Cheddar", "Provolone",
+            "Provolone (Australian)", "Pyengana Cheddar", "Pyramide", "Quark",
+            "Quark (Australian)", "Quartirolo Lombardo", "Quatre-Vents", "Quercy Petit",
+            "Queso Blanco", "Queso Blanco con Frutas --Pina y Mango", "Queso de Murcia",
+            "Queso del Montsec", "Queso del Tietar", "Queso Fresco", "Queso Fresco (Adobera)",
+            "Queso Iberico", "Queso Jalapeno", "Queso Majorero", "Queso Media Luna",
+            "Queso Para Frier", "Queso Quesadilla", "Rabacal", "Raclette", "Ragusano", "Raschera",
+            "Reblochon", "Red Leicester", "Regal de la Dombes", "Reggianito", "Remedou",
+            "Requeson", "Richelieu", "Ricotta", "Ricotta (Australian)", "Ricotta Salata", "Ridder",
+            "Rigotte", "Rocamadour", "Rollot", "Romano", "Romans Part Dieu", "Roncal", "Roquefort",
+            "Roule", "Rouleau De Beaulieu", "Royalp Tilsit", "Rubens", "Rustinu", "Saaland Pfarr",
+            "Saanenkaese", "Saga", "Sage Derby", "Sainte Maure", "Saint-Marcellin",
+            "Saint-Nectaire", "Saint-Paulin", "Salers", "Samso", "San Simon", "Sancerre",
+            "Sap Sago", "Sardo", "Sardo Egyptian", "Sbrinz", "Scamorza", "Schabzieger", "Schloss",
+            "Selles sur Cher", "Selva", "Serat", "Seriously Strong Cheddar", "Serra da Estrela",
+            "Sharpam", "Shelburne Cheddar", "Shropshire Blue", "Siraz", "Sirene", "Smoked Gouda",
+            "Somerset Brie", "Sonoma Jack", "Sottocenare al Tartufo", "Soumaintrain",
+            "Sourire Lozerien", "Spenwood", "Sraffordshire Organic", "St. Agur Blue Cheese",
+            "Stilton", "Stinking Bishop", "String", "Sussex Slipcote", "Sveciaost", "Swaledale",
+            "Sweet Style Swiss", "Swiss", "Syrian (Armenian String)", "Tala", "Taleggio", "Tamie",
+            "Tasmania Highland Chevre Log", "Taupiniere", "Teifi", "Telemea", "Testouri",
+            "Tete de Moine", "Tetilla", "Texas Goat Cheese", "Tibet", "Tillamook Cheddar",
+            "Tilsit", "Timboon Brie", "Toma", "Tomme Brulee", "Tomme d'Abondance",
+            "Tomme de Chevre", "Tomme de Romans", "Tomme de Savoie", "Tomme des Chouans", "Tommes",
+            "Torta del Casar", "Toscanello", "Touree de L'Aubier", "Tourmalet",
+            "Trappe (Veritable)", "Trois Cornes De Vendee", "Tronchon", "Trou du Cru", "Truffe",
+            "Tupi", "Turunmaa", "Tymsboro", "Tyn Grug", "Tyning", "Ubriaco", "Ulloa",
+            "Vacherin-Fribourgeois", "Valencay", "Vasterbottenost", "Venaco", "Vendomois",
+            "Vieux Corse", "Vignotte", "Vulscombe", "Waimata Farmhouse Blue",
+            "Washed Rind Cheese (Australian)", "Waterloo", "Weichkaese", "Wellington",
+            "Wensleydale", "White Stilton", "Whitestone Farmhouse", "Wigmore", "Woodside Cabecou",
+            "Xanadu", "Xynotyro", "Yarg Cornish", "Yarra Valley Pyramid", "Yorkshire Blue",
+            "Zamorano", "Zanetti Grana Padano", "Zanetti Parmigiano Reggiano"
+    };
+
+}

samples/devbytes/animation/ListViewAnimations/src/com/example/android/listviewanimations/ListViewAnimations.java

@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.listviewanimations;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.ObjectAnimator;
+import android.app.Activity;
+import android.content.Context;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.CheckBox;
+import android.widget.ListView;
+
+/**
+ * This example shows how animating ListView items can lead to problems as views are recycled,
+ * and how to perform these types of animations correctly with new API added in Jellybean.
+ *
+ * Watch the associated video for this demo on the DevBytes channel of developer.android.com
+ * or on YouTube at https://www.youtube.com/watch?v=8MIfSxgsHIs.
+ */
+public class ListViewAnimations extends Activity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_list_view_animations);
+
+        final CheckBox vpaCB = (CheckBox) findViewById(R.id.vpaCB);
+        final CheckBox setTransientStateCB = (CheckBox) findViewById(R.id.setTransientStateCB);
+        final ListView listview = (ListView) findViewById(R.id.listview);
+        final ArrayList<String> cheeseList = new ArrayList<String>();
+        for (int i = 0; i < Cheeses.sCheeseStrings.length; ++i) {
+            cheeseList.add(Cheeses.sCheeseStrings[i]);
+        }
+        final StableArrayAdapter adapter = new StableArrayAdapter(this,
+                android.R.layout.simple_list_item_1, cheeseList);
+        listview.setAdapter(adapter);
+
+        listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+
+            @Override
+            public void onItemClick(AdapterView<?> parent, final View view, int position, long id) {
+                final String item = (String) parent.getItemAtPosition(position);
+                if (vpaCB.isChecked()) {
+                    view.animate().setDuration(1000).alpha(0).
+                    withEndAction(new Runnable() {
+                        @Override
+                        public void run() {
+                            cheeseList.remove(item);
+                            adapter.notifyDataSetChanged();
+                            view.setAlpha(1);
+                        }
+                    });
+                } else {
+                    // Here's where the problem starts - this animation will animate a View object.
+                    // But that View may get recycled if it is animated out of the container,
+                    // and the animation will continue to fade a view that now contains unrelated
+                    // content.
+                    ObjectAnimator anim = ObjectAnimator.ofFloat(view, View.ALPHA, 0);
+                    anim.setDuration(1000);
+                    if (setTransientStateCB.isChecked()) {
+                        // Here's the correct way to do this: if you tell a view that it has
+                        // transientState, then ListView ill avoid recycling it until the
+                        // transientState flag is reset.
+                        // A different approach is to use ViewPropertyAnimator, which sets the
+                        // transientState flag internally.
+                        view.setHasTransientState(true);
+                    }
+                    anim.addListener(new AnimatorListenerAdapter() {
+                        @Override
+                        public void onAnimationEnd(Animator animation) {
+                            cheeseList.remove(item);
+                            adapter.notifyDataSetChanged();
+                            view.setAlpha(1);
+                            if (setTransientStateCB.isChecked()) {
+                                view.setHasTransientState(false);
+                            }
+                        }
+                    });
+                    anim.start();
+
+                }
+            }
+
+        });
+    }
+
+    private class StableArrayAdapter extends ArrayAdapter<String> {
+
+        HashMap<String, Integer> mIdMap = new HashMap<String, Integer>();
+
+        public StableArrayAdapter(Context context, int textViewResourceId,
+                List<String> objects) {
+            super(context, textViewResourceId, objects);
+            for (int i = 0; i < objects.size(); ++i) {
+                mIdMap.put(objects.get(i), i);
+            }
+        }
+
+        @Override
+        public long getItemId(int position) {
+            String item = getItem(position);
+            return mIdMap.get(item);
+        }
+
+        @Override
+        public boolean hasStableIds() {
+            return true;
+        }
+
+    }
+
+}

samples/devbytes/animation/PictureViewer/AndroidManifest.xml

@@ -0,0 +1,39 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.pictureviewer"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+    <uses-sdk
+        android:minSdkVersion="16"
+        android:targetSdkVersion="16" />
+
+    <application
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+        <activity
+            android:name="com.example.android.pictureviewer.PictureViewer"
+            android:label="@string/title_activity_picture_viewer" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

samples/devbytes/animation/PictureViewer/res/layout/activity_picture_viewer.xml

@@ -0,0 +1,35 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:background="#000"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" >
+
+    <ImageView
+        android:id="@+id/prevImageView"
+        android:adjustViewBounds="true"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        />
+
+    <ImageView
+        android:id="@+id/nextImageView"
+        android:adjustViewBounds="true"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        />
+
+</FrameLayout>

samples/devbytes/animation/PictureViewer/res/values-v11/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Holo.Light" />
+
+</resources>

samples/devbytes/animation/PictureViewer/res/values-v14/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar" />
+
+</resources>

samples/devbytes/animation/PictureViewer/res/values/strings.xml

@@ -0,0 +1,20 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <string name="app_name">PictureViewer</string>
+    <string name="title_activity_picture_viewer">PictureViewer</string>
+
+</resources>

samples/devbytes/animation/PictureViewer/res/values/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Light" />
+
+</resources>

samples/devbytes/animation/PictureViewer/src/com/example/android/pictureviewer/PictureViewer.java

@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.pictureviewer;
+
+import android.app.Activity;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Color;
+import android.graphics.drawable.BitmapDrawable;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.ImageView;
+
+/**
+ * This example shows how to use ViewPropertyAnimator to get a cross-fade effect as new
+ * bitmaps get installed in an ImageView.
+ *
+ * Watch the associated video for this demo on the DevBytes channel of developer.android.com
+ * or on YouTube at https://www.youtube.com/watch?v=9XbKMUtVnJA.
+ */
+public class PictureViewer extends Activity {
+
+    int mCurrentDrawable = 0;
+    int drawableIDs[] = {
+            R.drawable.p1,
+            R.drawable.p2,
+            R.drawable.p3,
+            R.drawable.p4,
+    };
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_picture_viewer);
+
+        // This app works by having two views, which get faded in/out for the cross-fade effect
+        final ImageView prevImageView = (ImageView) findViewById(R.id.prevImageView);
+        final ImageView nextImageView = (ImageView) findViewById(R.id.nextImageView);
+        prevImageView.setBackgroundColor(Color.TRANSPARENT);
+        nextImageView.setBackgroundColor(Color.TRANSPARENT);
+
+        // Setup default ViewPropertyAnimator durations for the two ImageViews
+        prevImageView.animate().setDuration(1000);
+        nextImageView.animate().setDuration(1000);
+
+        // NOte that a real app would do this more robustly, and not just load all possible
+        // bitmaps at onCreate() time.
+        final BitmapDrawable drawables[] = new BitmapDrawable[drawableIDs.length];
+        for (int i = 0; i < drawableIDs.length; ++i) {
+            Bitmap bitmap = BitmapFactory.decodeResource(getResources(),
+                    drawableIDs[i]);
+            drawables[i] = new BitmapDrawable(getResources(), bitmap);
+        }
+        prevImageView.setImageDrawable(drawables[0]);
+        nextImageView.setImageDrawable(drawables[1]);
+
+        prevImageView.setOnClickListener(new View.OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                // Use ViewPropertyAnimator to fade the previous imageView out and the next one in
+                prevImageView.animate().alpha(0).withLayer();
+                nextImageView.animate().alpha(1).withLayer().
+                        withEndAction(new Runnable() {
+                    // When the animation ends, set up references to change the prev/next
+                    // associations
+                    @Override
+                    public void run() {
+                        mCurrentDrawable =
+                                (mCurrentDrawable + 1) % drawables.length;
+                        int nextDrawableIndex =
+                                (mCurrentDrawable + 1) % drawables.length;
+                        prevImageView.setImageDrawable(drawables[mCurrentDrawable]);
+                        nextImageView.setImageDrawable(drawables[nextDrawableIndex]);
+                        nextImageView.setAlpha(0f);
+                        prevImageView.setAlpha(1f);
+                    }
+                });
+            }
+        });
+    }
+
+}

samples/devbytes/animation/PropertyAnimations/AndroidManifest.xml

@@ -0,0 +1,39 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.propertyanimations"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+    <uses-sdk
+        android:minSdkVersion="14"
+        android:targetSdkVersion="15" />
+
+    <application
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+        <activity
+            android:name="com.example.android.propertyanimations.PropertyAnimations"
+            android:label="@string/title_activity_property_animations" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

samples/devbytes/animation/PropertyAnimations/res/animator/combo.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<set xmlns:android="http://schemas.android.com/apk/res/android"
+    android:ordering="sequentially">
+    <objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
+        android:propertyName="alpha"
+        android:repeatCount="1"
+        android:repeatMode="reverse"
+        android:duration="300"
+        android:valueTo="0"/>
+    <objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
+        android:propertyName="translationX"
+        android:repeatCount="1"
+        android:repeatMode="reverse"
+        android:duration="300"
+        android:valueTo="800"/>
+
+    <objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
+        android:propertyName="rotation"
+        android:duration="300"
+        android:valueFrom="0"
+        android:valueTo="360"/>
+
+    <set xmlns:android="http://schemas.android.com/apk/res/android">
+        <objectAnimator
+            android:propertyName="scaleX"
+            android:repeatCount="1"
+            android:repeatMode="reverse"
+            android:duration="300"
+            android:valueTo="2"/>
+        <objectAnimator
+            android:propertyName="scaleY"
+            android:repeatCount="1"
+            android:repeatMode="reverse"
+            android:duration="300"
+            android:valueTo="2"/>
+    </set>
+</set>

samples/devbytes/animation/PropertyAnimations/res/animator/fade.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
+    android:propertyName="alpha"
+    android:repeatCount="1"
+    android:repeatMode="reverse"
+    android:duration="300"
+    android:valueTo="0"/>

samples/devbytes/animation/PropertyAnimations/res/animator/move.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
+    android:propertyName="translationX"
+    android:repeatCount="1"
+    android:repeatMode="reverse"
+    android:duration="300"
+    android:valueTo="800"/>

samples/devbytes/animation/PropertyAnimations/res/animator/scale.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<set xmlns:android="http://schemas.android.com/apk/res/android">
+    <objectAnimator
+        android:propertyName="scaleX"
+        android:repeatCount="1"
+        android:repeatMode="reverse"
+        android:duration="300"
+        android:valueTo="2"/>
+    <objectAnimator
+        android:propertyName="scaleY"
+        android:repeatCount="1"
+        android:repeatMode="reverse"
+        android:duration="300"
+        android:valueTo="2"/>
+</set>

samples/devbytes/animation/PropertyAnimations/res/animator/spin.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
+    android:propertyName="rotation"
+    android:valueFrom="0"
+    android:duration="300"
+    android:valueTo="360"/>

samples/devbytes/animation/PropertyAnimations/res/layout/activity_property_animations.xml

@@ -0,0 +1,58 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:orientation="vertical"
+    android:id="@+id/container"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" >
+
+    <CheckBox
+        android:id="@+id/checkbox"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/use_animation_resources" />
+
+    <Button
+        android:id="@+id/alphaButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/alpha" />
+
+    <Button
+        android:id="@+id/translateButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/translate" />
+
+    <Button
+        android:id="@+id/rotateButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/rotate" />
+
+    <Button
+        android:id="@+id/scaleButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/scale" />
+
+    <Button
+        android:id="@+id/setButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/set" />
+
+</LinearLayout>

samples/devbytes/animation/PropertyAnimations/res/values-v11/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Holo.Light" />
+
+</resources>

samples/devbytes/animation/PropertyAnimations/res/values-v14/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar" />
+
+</resources>

samples/devbytes/animation/PropertyAnimations/res/values/strings.xml

@@ -0,0 +1,26 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <string name="app_name">PropertyAnimations</string>
+    <string name="title_activity_property_animations">PropertyAnimations</string>
+    <string name="use_animation_resources">Use Animation Resources</string>
+    <string name="alpha">Alpha</string>
+    <string name="translate">Translate</string>
+    <string name="rotate">Rotate</string>
+    <string name="scale">Scale</string>
+    <string name="set">Set</string>
+
+</resources>

samples/devbytes/animation/PropertyAnimations/res/values/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Light" />
+
+</resources>

samples/devbytes/animation/PropertyAnimations/src/com/example/android/propertyanimations/PropertyAnimations.java

@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.propertyanimations;
+
+import android.animation.Animator;
+import android.animation.AnimatorInflater;
+import android.animation.AnimatorSet;
+import android.animation.ObjectAnimator;
+import android.animation.PropertyValuesHolder;
+import android.animation.ValueAnimator;
+import android.app.Activity;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.CheckBox;
+
+/**
+ * This example shows how to use property animations, specifically ObjectAnimator, to perform
+ * various view animations. Compare this approach to that of the ViewAnimations demo, which
+ * shows how to achieve similar effects using the pre-3.0 animation APIs.
+ *
+ * Watch the associated video for this demo on the DevBytes channel of developer.android.com
+ * or on YouTube at https://www.youtube.com/watch?v=3UbJhmkeSig.
+ */
+public class PropertyAnimations extends Activity {
+
+    CheckBox mCheckBox;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_property_animations);
+
+        mCheckBox = (CheckBox) findViewById(R.id.checkbox);
+        final Button alphaButton = (Button) findViewById(R.id.alphaButton);
+        final Button translateButton = (Button) findViewById(R.id.translateButton);
+        final Button rotateButton = (Button) findViewById(R.id.rotateButton);
+        final Button scaleButton = (Button) findViewById(R.id.scaleButton);
+        final Button setButton = (Button) findViewById(R.id.setButton);
+
+        // Fade the button out and back in
+        ObjectAnimator alphaAnimation = ObjectAnimator.ofFloat(alphaButton,
+                View.ALPHA, 0);
+        alphaAnimation.setRepeatCount(1);
+        alphaAnimation.setRepeatMode(ValueAnimator.REVERSE);
+
+        // Move the button over to the right and then back
+        ObjectAnimator translateAnimation =
+                ObjectAnimator.ofFloat(translateButton, View.TRANSLATION_X, 800);
+        translateAnimation.setRepeatCount(1);
+        translateAnimation.setRepeatMode(ValueAnimator.REVERSE);
+
+        // Spin the button around in a full circle
+        ObjectAnimator rotateAnimation =
+                ObjectAnimator.ofFloat(rotateButton, View.ROTATION, 360);
+        rotateAnimation.setRepeatCount(1);
+        rotateAnimation.setRepeatMode(ValueAnimator.REVERSE);
+
+        // Scale the button in X and Y. Note the use of PropertyValuesHolder to animate
+        // multiple properties on the same object in parallel.
+        PropertyValuesHolder pvhX = PropertyValuesHolder.ofFloat(View.SCALE_X, 2);
+        PropertyValuesHolder pvhY = PropertyValuesHolder.ofFloat(View.SCALE_Y, 2);
+        ObjectAnimator scaleAnimation =
+                ObjectAnimator.ofPropertyValuesHolder(scaleButton, pvhX, pvhY);
+        scaleAnimation.setRepeatCount(1);
+        scaleAnimation.setRepeatMode(ValueAnimator.REVERSE);
+
+        // Run the animations above in sequence
+        AnimatorSet setAnimation = new AnimatorSet();
+        setAnimation.play(translateAnimation).after(alphaAnimation).before(rotateAnimation);
+        setAnimation.play(rotateAnimation).before(scaleAnimation);
+
+        setupAnimation(alphaButton, alphaAnimation, R.animator.fade);
+        setupAnimation(translateButton, translateAnimation, R.animator.move);
+        setupAnimation(rotateButton, rotateAnimation, R.animator.spin);
+        setupAnimation(scaleButton, scaleAnimation, R.animator.scale);
+        setupAnimation(setButton, setAnimation, R.animator.combo);
+
+    }
+
+    private void setupAnimation(View view, final Animator animation, final int animationID) {
+        view.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+                // If the button is checked, load the animation from the given resource
+                // id instead of using the passed-in animation parameter. See the xml files
+                // for the details on those animations.
+                if (mCheckBox.isChecked()) {
+                    Animator anim = AnimatorInflater.loadAnimator(PropertyAnimations.this, animationID);
+                    anim.setTarget(v);
+                    anim.start();
+                    return;
+                }
+                animation.start();
+            }
+        });
+    }
+}

samples/devbytes/animation/ViewAnimations/AndroidManifest.xml

@@ -0,0 +1,39 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.viewanimations"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+    <uses-sdk
+        android:minSdkVersion="8"
+        android:targetSdkVersion="15" />
+
+    <application
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+        <activity
+            android:name="com.example.android.viewanimations.ViewAnimations"
+            android:label="@string/title_activity_view_animations" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

samples/devbytes/animation/ViewAnimations/res/anim/alpha_anim.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<alpha xmlns:android="http://schemas.android.com/apk/res/android"
+        android:fromAlpha="1.0" android:toAlpha="0.0"
+        android:duration="500" />

samples/devbytes/animation/ViewAnimations/res/anim/rotate_anim.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<rotate xmlns:android="http://schemas.android.com/apk/res/android"
+        android:toDegrees="360"
+        android:pivotX="50%" android:pivotY="50%"
+        android:duration="1000"/>

samples/devbytes/animation/ViewAnimations/res/anim/scale_anim.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<scale xmlns:android="http://schemas.android.com/apk/res/android"
+        android:fromXScale="1"
+        android:fromYScale="1"
+        android:toXScale="2"
+        android:toYScale="2"
+        android:duration="1000"/>

samples/devbytes/animation/ViewAnimations/res/anim/set_anim.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<set xmlns:android="http://schemas.android.com/apk/res/android">
+    <alpha android:fromAlpha="1.0" android:toAlpha="0.0"
+           android:duration="1000" />
+    <rotate android:toDegrees="180"
+           android:duration="1000"/>
+    <scale android:toXScale="2"
+           android:toYScale="2"
+           android:duration="1000"/>
+    <translate android:fromXDelta="0" android:toXDelta="100%p"
+           android:fromYDelta="0" android:toYDelta="100"
+           android:duration="1000" />
+</set>

samples/devbytes/animation/ViewAnimations/res/anim/translate_anim.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<translate xmlns:android="http://schemas.android.com/apk/res/android"
+        android:fromXDelta="0" android:toXDelta="100%p"
+        android:fromYDelta="0" android:toYDelta="100"
+        android:duration="1000" />

samples/devbytes/animation/ViewAnimations/res/layout/activity_view_animations.xml

@@ -0,0 +1,57 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" >
+
+    <CheckBox
+        android:id="@+id/checkbox"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/use_animation_resources" />
+
+    <Button
+        android:id="@+id/alphaButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/alpha" />
+
+    <Button
+        android:id="@+id/translateButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/translate" />
+
+    <Button
+        android:id="@+id/rotateButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/rotate" />
+
+    <Button
+        android:id="@+id/scaleButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/scale" />
+
+    <Button
+        android:id="@+id/setButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/set" />
+
+</LinearLayout>

samples/devbytes/animation/ViewAnimations/res/values-v11/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Holo.Light" />
+
+</resources>

samples/devbytes/animation/ViewAnimations/res/values-v14/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar" />
+
+</resources>

samples/devbytes/animation/ViewAnimations/res/values/strings.xml

@@ -0,0 +1,26 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <string name="app_name">ViewAnimations</string>
+    <string name="title_activity_view_animations">ViewAnimations</string>
+    <string name="alpha">Alpha</string>
+    <string name="translate">Translate</string>
+    <string name="rotate">Rotate</string>
+    <string name="scale">Scale</string>
+    <string name="set">Set</string>
+    <string name="use_animation_resources">Use Animation Resources</string>
+
+</resources>

samples/devbytes/animation/ViewAnimations/res/values/styles.xml

@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Light" />
+
+</resources>

samples/devbytes/animation/ViewAnimations/src/com/example/android/viewanimations/ViewAnimations.java

@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.viewanimations;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.view.View;
+import android.view.animation.AlphaAnimation;
+import android.view.animation.Animation;
+import android.view.animation.AnimationSet;
+import android.view.animation.AnimationUtils;
+import android.view.animation.RotateAnimation;
+import android.view.animation.ScaleAnimation;
+import android.view.animation.TranslateAnimation;
+import android.widget.Button;
+import android.widget.CheckBox;
+
+/**
+ * This example shows how to use pre-3.0 view Animation classes to create various animated UI
+ * effects. See also the demo PropertyAnimations, which shows how this is done using the new
+ * ObjectAnimator API introduced in Android 3.0.
+ *
+ * Watch the associated video for this demo on the DevBytes channel of developer.android.com
+ * or on YouTube at https://www.youtube.com/watch?v=_UWXqFBF86U.
+ */
+public class ViewAnimations extends Activity {
+
+    CheckBox mCheckBox;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_view_animations);
+
+        mCheckBox = (CheckBox) findViewById(R.id.checkbox);
+        final Button alphaButton = (Button) findViewById(R.id.alphaButton);
+        final Button translateButton = (Button) findViewById(R.id.translateButton);
+        final Button rotateButton = (Button) findViewById(R.id.rotateButton);
+        final Button scaleButton = (Button) findViewById(R.id.scaleButton);
+        final Button setButton = (Button) findViewById(R.id.setButton);
+
+        // Fade the button out and back in
+        final AlphaAnimation alphaAnimation = new AlphaAnimation(1, 0);
+        alphaAnimation.setDuration(1000);
+
+        // Move the button over and then back
+        final TranslateAnimation translateAnimation =
+                new TranslateAnimation(Animation.ABSOLUTE, 0,
+                Animation.RELATIVE_TO_PARENT, 1,
+                Animation.ABSOLUTE, 0, Animation.ABSOLUTE, 100);
+        translateAnimation.setDuration(1000);
+
+        // Spin the button around in a full circle
+        final RotateAnimation rotateAnimation = new RotateAnimation(0, 360,
+                Animation.RELATIVE_TO_SELF, .5f, Animation.RELATIVE_TO_SELF, .5f);
+        rotateAnimation.setDuration(1000);
+
+        // Scale the button in X and Y.
+        final ScaleAnimation scaleAnimation = new ScaleAnimation(1, 2, 1, 2);
+        scaleAnimation.setDuration(1000);
+
+        // Run the animations above in sequence on the final button. Looks horrible.
+        final AnimationSet setAnimation = new AnimationSet(true);
+        setAnimation.addAnimation(alphaAnimation);
+        setAnimation.addAnimation(translateAnimation);
+        setAnimation.addAnimation(rotateAnimation);
+        setAnimation.addAnimation(scaleAnimation);
+
+        setupAnimation(alphaButton, alphaAnimation, R.anim.alpha_anim);
+        setupAnimation(translateButton, translateAnimation, R.anim.translate_anim);
+        setupAnimation(rotateButton, rotateAnimation, R.anim.rotate_anim);
+        setupAnimation(scaleButton, scaleAnimation, R.anim.scale_anim);
+        setupAnimation(setButton, setAnimation, R.anim.set_anim);
+
+    }
+
+    private void setupAnimation(View view, final Animation animation,
+            final int animationID) {
+        view.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+                // If the button is checked, load the animation from the given resource
+                // id instead of using the passed-in animation paramter. See the xml files
+                // for the details on those animations.
+                v.startAnimation(mCheckBox.isChecked() ?
+                        AnimationUtils.loadAnimation(ViewAnimations.this, animationID) :
+                        animation);
+            }
+        });
+    }
+}

samples/devbytes/animation/WindowAnimations/AndroidManifest.xml

@@ -0,0 +1,57 @@
+<!-- Copyright (C) 2013 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.windowanimations"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+    <uses-sdk
+        android:minSdkVersion="16"
+        android:targetSdkVersion="16" />
+
+    <application
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+        <activity
+            android:name=".WindowAnimations"
+            android:label="@string/title_activity_window_animations" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity
+            android:name=".AnimatedSubActivity"
+            android:label="@string/title_activity_window_anim_sub" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity
+            android:name="com.example.android.windowanimations.SubActivity"
+            android:label="@string/title_activity_sub" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>