Android帧动画、补间动画、属性动画用法详解

<?xml version="1.0" encoding="utf-8"?> 
<animation-list xmlns:android="http://schemas.android.com/apk/res/android" 
 android:oneshot="true" 
 > 
 
 <item android:drawable="@drawable/g1" android:duration="200"></item> 
 <item android:drawable="@drawable/g2" android:duration="200"></item> 
 <item android:drawable="@drawable/g3" android:duration="200"></item> 
 <item android:drawable="@drawable/g4" android:duration="200"></item> 
 <item android:drawable="@drawable/g5" android:duration="200"></item> 
 
</animation-list> 

ImageView iv = (ImageView) findViewById(R.id.iv); 
iv.setBackgroundDrawable(getResources().getDrawable(R.drawable.frame_anim)); 
  
AnimationDrawable animationDrawable = (AnimationDrawable) iv.getBackground(); 
  
//设置是否只执行一次 
//animationDrawable.setOneShot(false); 
  
animationDrawable.start(); 

// 以view中心为缩放点，由初始状态缩小到看不间在返回到看见 
 ScaleAnimation animation = new ScaleAnimation( 
  1.0f, 0.0f,//一点点变小直到看不见为止 
  1.0f, 0.0f, 
  Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f//中间缩放 
 ); 
 animation.setDuration(BUBBLE_ENTER_CENTER_SCALE_TIME); 
 animation.setRepeatMode(Animation.REVERSE); 
 animation.setRepeatCount(1); 
 animation.setAnimationListener(new Animation.AnimationListener() { 
  @Override 
  public void onAnimationStart(Animation animation) { 
  } 
 
  @Override 
  public void onAnimationEnd(Animation animation) { 
 
  homingBubbleView(true,position,view, current, endRatioFrame); 
  } 
 
  @Override 
  public void onAnimationRepeat(Animation animation) { 
  } 
 }); 
 view.startAnimation(animation); 

public class FloatEvaluator implements TypeEvaluator { 
 public Object evaluate(float fraction, Object startValue, Object endValue) { 
 float startFloat = ((Number) startValue).floatValue(); 
 return startFloat + fraction * (((Number) endValue).floatValue() - startFloat); 
 } 

ValueAnimator mAnimatorEnetr = ValueAnimator.ofObject(new FloatEvaluator(getContext()), 0,10); 
  mAnimatorEnetr.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { 
  @Override 
  public void onAnimationUpdate(ValueAnimator animation) { 
   (Float) animation.getAnimatedValue();//这里就是返回不断变化的值 
   
  } 
  }); 
  mAnimatorEnetr.setDuration(1000); 
  mAnimatorEnetr.addListener(new Animator.AnimatorListener() { 
  @Override 
  public void onAnimationStart(Animator animation) { 
 
  } 
 
  @Override 
  public void onAnimationEnd(Animator animation) { 
   
  } 
 
  @Override 
  public void onAnimationCancel(Animator animation) { 
 
  } 
 
  @Override 
  public void onAnimationRepeat(Animator animation) { 
 
  } 
  }); 
  mAnimatorEnetr.start();