FlowingGradient.java 文件源码

private void init() {
    setBackgroundResource(draw);
    final AnimationDrawable frameAnimation = (AnimationDrawable) getBackground();
    frameAnimation.setEnterFadeDuration(duration);
    frameAnimation.setExitFadeDuration(duration);
    post(new Runnable(){
        public void run(){
            frameAnimation.start();
        }
    });
}