android 属性动画

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package com.example.objectanimator;import android.animation.Animator;import android.animation.AnimatorListenerAdapter;import android.animation.AnimatorSet;import android.animation.ObjectAnimator;import android.animation.ValueAnimator;import android.animation.ValueAnimator.AnimatorUpdateListener;import android.app.Activity;import android.os.Bundle;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.view.animation.AccelerateDecelerateInterpolator;import android.view.animation.AccelerateInterpolator;import android.view.animation.LinearInterpolator;import android.widget.Button;import android.widget.TextView;/*********************************** * android 属性动画是在android 3.0出现的， *  * 要想向低版本兼容可以使用开源框架nieoldandroid动画 *  *  * **********************************/public class MainActivity extends Activity {TextView textview;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);textview = (TextView) this.findViewById(R.id.textview);Button button = (Button) this.findViewById(R.id.button);button.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {//textviewAnimation(textview);//valueAnimatorTest();//animationSet(textview);viewPropertyAnimatorTest(textview);}});}private void textviewAnimation(TextView textview){float startx = textview.getTranslationX();ObjectAnimator animator = ObjectAnimator.ofFloat(textview, "translationX", startx,-500f,startx);animator.setRepeatCount(100);//animator.setRepeatMode(RE);animator.setInterpolator(new LinearInterpolator());//线性运行animator.setDuration(1000);animator.start();}private void valueAnimatorTest(){ValueAnimator valueAnimator = ValueAnimator.ofFloat(0,94,9,58);//值的改变从0-94-9-58依次改变valueAnimator.setDuration(1000);//监听值的变化（哈哈）valueAnimator.addUpdateListener(new AnimatorUpdateListener() {@Overridepublic void onAnimationUpdate(ValueAnimator anim) {float value = (float) anim.getAnimatedValue();Log.e("current value is ", value+"");}});valueAnimator.start();}//集合动画private void animationSet(TextView textview){float  transx = (float) textview.getTranslationX();//动画集合对象AnimatorSet animatorSet = new AnimatorSet();//动画监听animatorSet.addListener(new AnimatorListenerAdapter(){@Overridepublic void onAnimationEnd(Animator animation) {Log.i("----------AnimatorSet anim is finish-------------", "aa");}});    ObjectAnimator transAnim = ObjectAnimator.ofFloat(textview, "translationX", transx,-500f,transx);//平移    ObjectAnimator alphaAnim = ObjectAnimator.ofFloat(textview, "alpha", 1f,0f,1f);//像素    ObjectAnimator rotateAnim = ObjectAnimator.ofFloat(textview, "rotation", 0f,360f);//旋转    animatorSet.play(rotateAnim).with(transAnim).after(alphaAnim);//先变化像素，再同时旋转动画和平移动画    animatorSet.setDuration(2000);    animatorSet.setInterpolator(new AccelerateInterpolator());//加速    animatorSet.start();}//ViewPropertyAnimator 让动画变得更加简单（此属性是在android 3.1出现的）private void viewPropertyAnimatorTest(TextView textview){//textview.animate().alpha(0f).setDuration(2000);//将textview由不透明变为透明,动画时长为2秒textview.animate().alpha(0f).x(500f).y(500f).setDuration(2000);//将textview由不透明变为透明,动画时长为2秒}}
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