LineageOS/android_development
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Cherrypick from Change-Id: I4ae984cf776604cede32b98db6b1eb3cb6c59c7e

Browse Source 
First set of demo apps for DevBytes videos

Change-Id: I696b184aaa8058f01c0369a173aae09e38a8cb08
This commit is contained in:
Chet Haase
2013-01-10 16:19:38 -08:00
committed by Scott Main
parent b8a61acb07
commit 690af1285c
168 changed files with 4819 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

67
samples/devbytes/animation/Bouncer/AndroidManifest.xml Normal file
View File

@@ -0,0 +1,67 @@
<!-- 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>

BIN
samples/devbytes/animation/Bouncer/res/drawable-hdpi/ic_launcher.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 9.2 KiB

BIN
samples/devbytes/animation/Bouncer/res/drawable-mdpi/ic_launcher.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 5.1 KiB

BIN
samples/devbytes/animation/Bouncer/res/drawable-nodpi/electricsheep.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 5.2 KiB

BIN
samples/devbytes/animation/Bouncer/res/drawable-xhdpi/ic_launcher.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 14 KiB

28
samples/devbytes/animation/Bouncer/res/layout/activity_bouncer.xml Normal file
View File

@@ -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.Bouncer$MyView"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Bouncer" />
</LinearLayout>

28
samples/devbytes/animation/Bouncer/res/layout/activity_bouncer1.xml Normal file
View File

@@ -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>

28
samples/devbytes/animation/Bouncer/res/layout/activity_bouncer2.xml Normal file
View File

@@ -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.Bouncer2$MyView"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Bouncer" />
</LinearLayout>

28
samples/devbytes/animation/Bouncer/res/layout/activity_bouncer3.xml Normal file
View File

@@ -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>

19
samples/devbytes/animation/Bouncer/res/values-v11/styles.xml Normal file
View File

@@ -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>

19
samples/devbytes/animation/Bouncer/res/values-v14/styles.xml Normal file
View File

@@ -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>

23
samples/devbytes/animation/Bouncer/res/values/strings.xml Normal file
View File

@@ -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>

19
samples/devbytes/animation/Bouncer/res/values/styles.xml Normal file
View File

@@ -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>

144
samples/devbytes/animation/Bouncer/src/com/example/android/bouncer/Bouncer.java Normal file
View File

@@ -0,0 +1,144 @@
/*
* 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;
}
}
}

128
samples/devbytes/animation/Bouncer/src/com/example/android/bouncer/Bouncer1.java Normal file
View File

@@ -0,0 +1,128 @@
/*
* 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;
}
}
}

130
samples/devbytes/animation/Bouncer/src/com/example/android/bouncer/Bouncer2.java Normal file
View File

@@ -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;
}
}
}

124
samples/devbytes/animation/Bouncer/src/com/example/android/bouncer/Bouncer3.java Normal file
View File

@@ -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));
}
}
}