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demo multi-property animations

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Change-Id: I587bdc08e48a09d6df471e5bae767977c0c9ae18
This commit is contained in:
Chet Haase
2010-08-19 09:47:13 -07:00
parent 5d4b64141f
commit d9e2a04d7c
3 changed files with 214 additions and 0 deletions
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8
samples/ApiDemos/AndroidManifest.xml
View File

@@ -838,6 +838,14 @@
</intent-filter> </intent-filter>
</activity> </activity>
<activity android:name=".animation.MultiPropertyAnimation"
android:label="Animation/Multiple Properties">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.SAMPLE_CODE" />
</intent-filter>
</activity>
<!-- ************************************* --> <!-- ************************************* -->
<!-- ANIMATION PACKAGE SAMPLES --> <!-- ANIMATION PACKAGE SAMPLES -->
<!-- ************************************* --> <!-- ************************************* -->

28
samples/ApiDemos/res/layout/animation_multi_property.xml Normal file
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@@ -0,0 +1,28 @@
<?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"
>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Run"
android:id="@+id/startButton"
/>
</LinearLayout>

178
samples/ApiDemos/src/com/example/android/apis/animation/MultiPropertyAnimation.java Normal file
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@@ -0,0 +1,178 @@
/*
* 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 android.animation.*;
import android.view.animation.AccelerateInterpolator;
import com.example.android.apis.R;
import java.util.ArrayList;
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.BounceInterpolator;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.SeekBar;
/**
* This application demonstrates the seeking capability of Animator. The SeekBar in the
* UI allows you to set the position of the animation. Pressing the Run button will play from
* the current position of the animation.
*/
public class MultiPropertyAnimation extends Activity {
private static final int DURATION = 1500;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.animation_seeking);
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();
}
});
}
public class MyAnimationView extends View implements Animator.AnimatorUpdateListener {
private static final float BALL_SIZE = 100f;
public final ArrayList<ShapeHolder> balls = new ArrayList<ShapeHolder>();
Sequencer animation = null;
Animatable bounceAnim = null;
ShapeHolder ball = null;
public MyAnimationView(Context context) {
super(context);
addBall(50, 0);
addBall(150, 0);
addBall(250, 0);
addBall(350, 0);
}
private void createAnimation() {
if (bounceAnim == null) {
ShapeHolder ball;
ball = balls.get(0);
PropertyAnimator yBouncer = new PropertyAnimator(DURATION, ball, "y",
ball.getY(), getHeight() - BALL_SIZE);
yBouncer.setInterpolator(new BounceInterpolator());
yBouncer.addUpdateListener(this);
ball = balls.get(1);
PropertyValuesHolder pvhY = new PropertyValuesHolder("y", ball.getY(),
getHeight() - BALL_SIZE);
PropertyValuesHolder pvhAlpha = new PropertyValuesHolder("alpha", 1.0f,
0f);
PropertyAnimator yAlphaBouncer = new PropertyAnimator(DURATION/2, ball, pvhY, pvhAlpha);
yAlphaBouncer.setInterpolator(new AccelerateInterpolator());
yAlphaBouncer.setRepeatCount(1);
yAlphaBouncer.setRepeatMode(Animator.REVERSE);
ball = balls.get(2);
PropertyValuesHolder pvhW = new PropertyValuesHolder("width", ball.getWidth(),
ball.getWidth() * 2);
PropertyValuesHolder pvhH = new PropertyValuesHolder("height", ball.getHeight(),
ball.getHeight() * 2);
PropertyValuesHolder pvTX = new PropertyValuesHolder("x", ball.getX(), ball.getX() - BALL_SIZE/2f);
PropertyValuesHolder pvTY = new PropertyValuesHolder("y", 0f, ball.getY(), ball.getY() - BALL_SIZE/2f);
PropertyAnimator whxyBouncer = new PropertyAnimator(DURATION/2, ball, pvhW, pvhH,
pvTX, pvTY);
whxyBouncer.setRepeatCount(1);
whxyBouncer.setRepeatMode(Animator.REVERSE);
ball = balls.get(3);
pvhY = new PropertyValuesHolder("y", ball.getY(),
getHeight() - BALL_SIZE);
float ballX = ball.getX();
Keyframe kf0 = new Keyframe(0f, ballX);
Keyframe kf1 = new Keyframe(.5f, ballX + 100f);
Keyframe kf2 = new Keyframe(1f, ballX + 50f);
PropertyValuesHolder pvhX = new PropertyValuesHolder("x", kf0, kf1, kf2);
PropertyAnimator yxBouncer = new PropertyAnimator(DURATION/2, ball, pvhY, pvhX);
yxBouncer.setRepeatCount(1);
yxBouncer.setRepeatMode(Animator.REVERSE);
bounceAnim = new Sequencer();
((Sequencer)bounceAnim).playTogether(yBouncer, yAlphaBouncer, whxyBouncer, yxBouncer);
}
}
public void startAnimation() {
createAnimation();
bounceAnim.start();
}
private ShapeHolder addBall(float x, float y) {
OvalShape circle = new OvalShape();
circle.resize(BALL_SIZE, BALL_SIZE);
ShapeDrawable drawable = new ShapeDrawable(circle);
ShapeHolder shapeHolder = new ShapeHolder(drawable);
shapeHolder.setX(x);
shapeHolder.setY(y);
int red = (int)(100 + Math.random() * 155);
int green = (int)(100 + Math.random() * 155);
int blue = (int)(100 + Math.random() * 155);
int color = 0xff000000 | red << 16 | green << 8 | blue;
Paint paint = drawable.getPaint();
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);
balls.add(shapeHolder);
return shapeHolder;
}
@Override
protected void onDraw(Canvas canvas) {
for (ShapeHolder ball : balls) {
canvas.translate(ball.getX(), ball.getY());
ball.getShape().draw(canvas);
canvas.translate(-ball.getX(), -ball.getY());
}
}
public void onAnimationUpdate(Animator animation) {
invalidate();
}
}
}