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Merge "demo for new reversing behavior in Animator"

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This commit is contained in:
Chet Haase
2010-08-17 17:15:34 -07:00
committed by Android (Google) Code Review
parent a0042eec8c eba431d703
commit 1cc6a37881
3 changed files with 189 additions and 0 deletions
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7
samples/ApiDemos/AndroidManifest.xml
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@@ -831,6 +831,13 @@
</intent-filter>
</activity>
<activity android:name=".animation.ReversingAnimation" android:label="Animation/Reversing">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.SAMPLE_CODE" />
</intent-filter>
</activity>
<!-- ************************************* -->
<!-- ANIMATION PACKAGE SAMPLES -->
<!-- ************************************* -->

40
samples/ApiDemos/res/layout/animation_reversing.xml Normal file
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@@ -0,0 +1,40 @@
<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2010 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="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/container"
>
<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="Play"
android:id="@+id/startButton"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Reverse"
android:id="@+id/reverseButton"
/>
</LinearLayout>
</LinearLayout>

142
samples/ApiDemos/src/com/example/android/apis/animation/ReversingAnimation.java Normal file
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@@ -0,0 +1,142 @@
/*
* Copyright (C) 2010 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.apis.animation;
// Need the following import to get access to the app resources, since this
// class is in a sub-package.
import com.example.android.apis.R;
import java.util.ArrayList;
import android.animation.Animatable;
import android.animation.Animator;
import android.animation.PropertyAnimator;
import android.animation.Sequencer;
import android.animation.Animatable.AnimatableListener;
import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RadialGradient;
import android.graphics.Shader;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.shapes.OvalShape;
import android.os.Bundle;
import android.view.View;
import android.view.animation.AccelerateInterpolator;
import android.widget.Button;
import android.widget.LinearLayout;
public class ReversingAnimation extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.animation_reversing);
LinearLayout container = (LinearLayout) findViewById(R.id.container);
final MyAnimationView animView = new MyAnimationView(this);
container.addView(animView);
Button starter = (Button) findViewById(R.id.startButton);
starter.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
animView.startAnimation();
}
});
Button reverser = (Button) findViewById(R.id.reverseButton);
reverser.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
animView.reverseAnimation();
}
});
}
public class MyAnimationView extends View implements Animator.AnimatorUpdateListener {
public final ArrayList<ShapeHolder> balls = new ArrayList<ShapeHolder>();
Animator bounceAnim = null;
ShapeHolder ball = null;
public MyAnimationView(Context context) {
super(context);
ball = createBall(25, 25);
}
private void createAnimation() {
if (bounceAnim == null) {
bounceAnim = new PropertyAnimator(1500, ball, "y",
ball.getY(), getHeight() - 50f);
bounceAnim.setInterpolator(new AccelerateInterpolator(2f));
bounceAnim.addUpdateListener(this);
}
}
public void startAnimation() {
createAnimation();
bounceAnim.start();
}
public void reverseAnimation() {
createAnimation();
bounceAnim.reverse();
}
public void seek(long seekTime) {
createAnimation();
bounceAnim.setCurrentPlayTime(seekTime);
}
private ShapeHolder createBall(float x, float y) {
OvalShape circle = new OvalShape();
circle.resize(50f, 50f);
ShapeDrawable drawable = new ShapeDrawable(circle);
ShapeHolder shapeHolder = new ShapeHolder(drawable);
shapeHolder.setX(x - 25f);
shapeHolder.setY(y - 25f);
int red = (int)(Math.random() * 255);
int green = (int)(Math.random() * 255);
int blue = (int)(Math.random() * 255);
int color = 0xff000000 | red << 16 | green << 8 | blue;
Paint paint = drawable.getPaint(); //new Paint(Paint.ANTI_ALIAS_FLAG);
int darkColor = 0xff000000 | red/4 << 16 | green/4 << 8 | blue/4;
RadialGradient gradient = new RadialGradient(37.5f, 12.5f,
50f, color, darkColor, Shader.TileMode.CLAMP);
paint.setShader(gradient);
shapeHolder.setPaint(paint);
return shapeHolder;
}
@Override
protected void onDraw(Canvas canvas) {
canvas.save();
canvas.translate(ball.getX(), ball.getY());
ball.getShape().draw(canvas);
canvas.restore();
}
public void onAnimationUpdate(Animator animation) {
invalidate();
}
}
}