Java实现帧动画的实例代码

本文讲述了Java实现帧动画的实例代码。分享给大家供大家参考，具体如下：

1、效果图

2、帧动画的简要代码

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();
 }

3、扩展：

//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);

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