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Adding demo for xml animator loading

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Change-Id: I77d4e4f3b26c47e7973dd64282c12a9d6c3b5dd1
This commit is contained in:
Chet Haase
2010-08-18 10:28:06 -07:00
parent 6e94ff6be9
commit 0366ddf4d3
8 changed files with 486 additions and 0 deletions
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153
samples/ApiDemos/src/com/example/android/apis/animation/AnimationLoading.java Normal file
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/*
* 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.AnimatableInflater;
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.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.widget.Button;
import android.widget.LinearLayout;
/**
* This application demonstrates loading Animatable objects from XML resources.
*/
public class AnimationLoading extends Activity {
private static final int DURATION = 1500;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.animation_loading);
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>();
Animatable animation = null;
public MyAnimationView(Context context) {
super(context);
addBall(100, 0);
addBall(250, 0);
addBall(400, 0);
}
private void createAnimation() {
if (animation == null) {
PropertyAnimator anim =
(PropertyAnimator) AnimatableInflater.
loadAnimatable(getApplicationContext(), R.anim.property_animator);
anim.addUpdateListener(this);
anim.setTarget(balls.get(0));
Animator fader =
(Animator) AnimatableInflater.loadAnimatable(getApplicationContext(),
R.anim.animator);
fader.addUpdateListener(new Animator.AnimatorUpdateListener() {
public void onAnimationUpdate(Animator animation) {
balls.get(1).setAlpha((Float) animation.getAnimatedValue());
}
});
Sequencer seq =
(Sequencer) AnimatableInflater.loadAnimatable(getApplicationContext(),
R.anim.sequencer);
seq.setTarget(balls.get(2));
animation = new Sequencer();
((Sequencer) animation).playTogether(anim, fader, seq);
}
}
public void startAnimation() {
createAnimation();
animation.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();
ShapeHolder ball = balls.get(0);
ball.setY((Float)animation.getAnimatedValue());
}
}
}

182
samples/ApiDemos/src/com/example/android/apis/animation/CustomEvaluator.java Normal file
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/*
* 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.TypeEvaluator;
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 CustomEvaluator 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();
}
});
}
public class XYHolder {
private float mX;
private float mY;
public XYHolder(float x, float y) {
mX = x;
mY = y;
}
public float getX() {
return mX;
}
public void setX(float x) {
mX = x;
}
public float getY() {
return mY;
}
public void setY(float y) {
mY = y;
}
}
public class XYEvaluator implements TypeEvaluator {
@Override
public Object evaluate(float fraction, Object startValue, Object endValue) {
XYHolder startXY = (XYHolder) startValue;
XYHolder endXY = (XYHolder) endValue;
return new XYHolder(startXY.getX() + fraction * (endXY.getX() - startXY.getX()),
startXY.getY() + fraction * (endXY.getY() - startXY.getY()));
}
}
public class BallXYHolder {
private ShapeHolder mBall;
public BallXYHolder(ShapeHolder ball) {
mBall = ball;
}
public void setXY(XYHolder xyHolder) {
mBall.setX(xyHolder.getX());
mBall.setY(xyHolder.getY());
}
public XYHolder getXY() {
return new XYHolder(mBall.getX(), mBall.getY());
}
}
public class MyAnimationView extends View implements Animator.AnimatorUpdateListener {
public final ArrayList<ShapeHolder> balls = new ArrayList<ShapeHolder>();
Animator bounceAnim = null;
ShapeHolder ball = null;
BallXYHolder ballHolder = null;
public MyAnimationView(Context context) {
super(context);
ball = createBall(25, 25);
ballHolder = new BallXYHolder(ball);
}
private void createAnimation() {
if (bounceAnim == null) {
XYHolder startXY = new XYHolder(0f, 0f);
XYHolder endXY = new XYHolder(300f, 500f);
bounceAnim = new PropertyAnimator(1500, ballHolder, "xY",
endXY);
bounceAnim.setEvaluator(new XYEvaluator());
bounceAnim.addUpdateListener(this);
}
}
public void startAnimation() {
createAnimation();
bounceAnim.start();
}
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();
}
}
}