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MainActivity如下:

package cc.cn;import android.animation.Animator;import android.animation.AnimatorInflater;import android.animation.AnimatorListenerAdapter;import android.animation.AnimatorSet;import android.animation.ObjectAnimator;import android.animation.PropertyValuesHolder;import android.animation.Animator.AnimatorListener;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.ViewPropertyAnimator;import android.view.View.OnClickListener;import android.widget.Button;/** * Demo描述: * Android中属性动画Property Animation使用示例(一) *  * 参考资料: * 1 http://blog.csdn.net/linmiansheng/article/details/18676845 *   说明了关于View动画的缺陷,即引入Property Animation的必要性 * 2 关于属性动画的中文文档,请参见: *   http://blog.csdn.net/think_soft/article/details/7703684 *   http://wiki.eoeandroid.com/Property_Animation *   Thank you very much *    */public class MainActivity extends Activity {	private Button mScaleXButton;	private Button mScaleXYButton;	private Button mTranslateXButton;	private Button mAlphaButton;	private Button mAnimatorSetByCodesButton;	private Button mPropertyValuesHolderButton;	private Button mViewPropertyAnimatorButton;	private ObjectAnimator mObjectAnimator1;	private ObjectAnimator mObjectAnimator2;	private ObjectAnimator mObjectAnimator3;	private AnimatorSet mAnimatorSet1;	private AnimatorSet mAnimatorSet2;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        init();    }        private void init(){    	//--------->以下为在X方向上进行缩放的属性动画    	mScaleXButton=(Button) findViewById(R.id.scaleXButton);    	mScaleXButton.setOnClickListener(new OnClickListener() {			@Override			public void onClick(View v) {				mObjectAnimator1.start();							}		});    	mObjectAnimator1=(ObjectAnimator)AnimatorInflater.loadAnimator(this, R.animator.scalexanimator);     	mObjectAnimator1.setTarget(mScaleXButton);    	    	    	//--------->以下为在X和Y方向上进行缩放的属性动画    	mScaleXYButton=(Button) findViewById(R.id.scaleXYButton);    	mScaleXYButton.setOnClickListener(new OnClickListener() {			@Override			public void onClick(View v) {				mAnimatorSet1.start();							}		});    	mAnimatorSet1=(AnimatorSet)AnimatorInflater.loadAnimator(this, R.animator.setanimator);     	mAnimatorSet1.setTarget(mScaleXYButton);    	    	    	//--------->以下为在X方向上进行位移的属性动画    	mTranslateXButton=(Button) findViewById(R.id.translateXButton);    	mTranslateXButton.setOnClickListener(new OnClickListener() {			@Override			public void onClick(View v) {				mObjectAnimator2.start();							}		});    	mObjectAnimator2=(ObjectAnimator)AnimatorInflater.loadAnimator(this, R.animator.translatexanimator);     	mObjectAnimator2.setTarget(mTranslateXButton);    	    	    	//--------->以下为透明度变化的属性动画    	mAlphaButton=(Button) findViewById(R.id.alphaButton);    	mAlphaButton.setOnClickListener(new OnClickListener() {			@Override			public void onClick(View v) {				mObjectAnimator3.start();							}		});    	mObjectAnimator3=(ObjectAnimator)AnimatorInflater.loadAnimator(this, R.animator.alphaanimator);     	mObjectAnimator3.setTarget(mAlphaButton);    	    	    	//--------->以下为在代码中实现AnimatorSet    	mAnimatorSetByCodesButton=(Button) findViewById(R.id.animatorSetByCodesButton);    	mAnimatorSetByCodesButton.setOnClickListener(new OnClickListener() {			@Override			public void onClick(View v) {				mAnimatorSet2.start();							}		});    	mAnimatorSet2=new AnimatorSet();    	//设置动画    	mAnimatorSet2.playTogether(    			ObjectAnimator.ofFloat(mAnimatorSetByCodesButton, "alpha", 1,0,1),    			ObjectAnimator.ofFloat(mAnimatorSetByCodesButton, "translationX", 0f,400f,0f),    			ObjectAnimator.ofFloat(mAnimatorSetByCodesButton, "translationY", 0f,400f,0f),    			ObjectAnimator.ofFloat(mAnimatorSetByCodesButton, "rotation", 0,180,360)    	);    	//设置动画时间    	mAnimatorSet2.setDuration(2000);    	//设置动画监听    	mAnimatorSet2.addListener(new AnimatorListener() {						@Override			public void onAnimationStart(Animator animator) {				System.out.println("---> onAnimationStart");			}						@Override			public void onAnimationRepeat(Animator animator) {				System.out.println("---> onAnimationRepeat");			}						@Override			public void onAnimationEnd(Animator animator) {				System.out.println("---> onAnimationEnd");			}						@Override			public void onAnimationCancel(Animator animator) {				System.out.println("---> onAnimationCancel");			}		});    	    	    	//在代码中要实现一个对象不同属性的动画效果,除了AnimatorSet外    	//还可利用PropertyValuesHolder和ViewPropertyAnimator对象来实现    	//--------->以下为在代码中利用PropertyValuesHolder实现类似AnimatorSet的效果    	mPropertyValuesHolderButton=(Button) findViewById(R.id.propertyValuesHolderButton);    	PropertyValuesHolder propertyValuesHolderX=PropertyValuesHolder.ofFloat("translationX", 0f,200f);    	PropertyValuesHolder propertyValuesHolderY=PropertyValuesHolder.ofFloat("translationY", 0f,200f);    	final ObjectAnimator objectAnimator    	=ObjectAnimator.ofPropertyValuesHolder(mPropertyValuesHolderButton, propertyValuesHolderX, propertyValuesHolderY);    	objectAnimator.setDuration(2000);    	mPropertyValuesHolderButton.setOnClickListener(new OnClickListener() {			@Override			public void onClick(View v) {				objectAnimator.start();			}		});    	    	//在代码中要实现一个对象不同属性的动画效果,除了AnimatorSet外    	//还可利用PropertyValuesHolder和ViewPropertyAnimator对象来实现    	//--------->以下为在代码中利用ViewPropertyAnimator实现类似AnimatorSet的效果    	mViewPropertyAnimatorButton=(Button) findViewById(R.id.viewPropertyAnimatorButton);    	mViewPropertyAnimatorButton.setOnClickListener(new OnClickListener() {			@Override			public void onClick(final View v) {				ViewPropertyAnimator viewPropertyAnimator=mViewPropertyAnimatorButton.animate();				//位移		    	viewPropertyAnimator.translationX(100f);		    	//透明度		    	viewPropertyAnimator.alpha(0.5f);		    	//监听		    	viewPropertyAnimator.setListener(new AnimatorListenerAdapter() {		    		@Override					public void onAnimationStart(Animator animation) {						super.onAnimationStart(animation);					}		    		@Override					public void onAnimationCancel(Animator animation) {						super.onAnimationCancel(animation);					}					@Override					public void onAnimationRepeat(Animator animation) {						super.onAnimationRepeat(animation);					}					@Override		    		public void onAnimationEnd(Animator animator){						//动画结束后将其透明度和位置还原						v.animate().alpha(1).translationX(0);		    		}		    	});				viewPropertyAnimator.start();							}		});    	    }}

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