Java实现帧动画的实例代码

private ImageView bgAnimView; 
 private AnimationDrawable mAnimationDrawable; 
//初始化 
 mAnimationDrawable = new AnimationDrawable(); 
 bgAnimView = new ImageView(mContext); 
 bgAnimView.setBackgroundDrawable(getAnimationDrawable(mAnimationDrawable)); 
 params = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 
 params.topMargin = Util.Div(176 + 58); 
 params.gravity = Gravity.CENTER_HORIZONTAL; 
 addView(bgAnimView, params); 
private AnimationDrawable getAnimationDrawable(AnimationDrawable mAnimationDrawable) { 
 int duration = 50; 
 mAnimationDrawable.addFrame(mContext.getResources().getDrawable(R.drawable.loading1), duration); 
 mAnimationDrawable.addFrame(mContext.getResources().getDrawable(R.drawable.loading2), duration); 
 mAnimationDrawable.addFrame(mContext.getResources().getDrawable(R.drawable.loading3), duration); 
 mAnimationDrawable.setOneShot(false); 
 return mAnimationDrawable; 
 } 
 //动画开始 
 public void animLoadingStart() { 
 this.setVisibility(View.VISIBLE); 
 if (mAnimationDrawable != null) { 
 mAnimationDrawable.start(); 
 } 
 } 
 //动画结束 
 public void animLoadingEnd() { 
 if (mAnimationDrawable != null) { 
 mAnimationDrawable.stop(); 
 } 

//X轴平移 
 public void animY(int y, int nextY, int duration) { 
 LinearInterpolator ll = new LinearInterpolator(); //匀速 
 ObjectAnimator animator = ObjectAnimator.ofFloat(yourView, "translationY", 0, 300);//300若为负值，就是向上平移 
 animator.setDuration(duration); 
 animator.setInterpolator(ll); 
 animator.start(); 
 } 
//Y轴平移 
 public void animX(int x, int nextX, int duration) { 
 LinearInterpolator ll = new LinearInterpolator(); 
 ObjectAnimator animator = ObjectAnimator.ofFloat(yourView, "translationX", x, nextX); 
 animator.setDuration(duration); 
 animator.setInterpolator(ll); 
 animator.start(); 
 } 
//纵向压缩0.5倍 
 LinearInterpolator ll = new LinearInterpolator();//匀速 
 ScaleAnimation scaleAnimation = new ScaleAnimation(1, 1, 1, 0.5f);//默认从（0,0） 
 scaleAnimation.setDuration(500); 
 scaleAnimation.setInterpolator(ll); 
 scaleAnimation.setFillAfter(true); 
 chartView.startAnimation(scaleAnimation); 
//横向压缩0.5倍 
 LinearInterpolator ll = new LinearInterpolator(); 
 ScaleAnimation scaleAnimation = new ScaleAnimation(1, 0.5f, 1, 1);//默认从（0,0） 
 scaleAnimation.setDuration(500); 
 scaleAnimation.setInterpolator(ll); 
 scaleAnimation.setFillAfter(true); 
 chartView.startAnimation(scaleAnimation);