NoHotelsActivity.java 文件源码

@TargetApi(Build.VERSION_CODES.M)
private void initUi() {
    initializeToolbar();

    final AnimatedVectorDrawable avd2 = (AnimatedVectorDrawable) tvButton.getBackground();

    tvButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            tvButton.setText("Loading...");
            avd2.start();
        }
    });

    avd2.registerAnimationCallback(new Animatable2.AnimationCallback() {
        @Override
        public void onAnimationEnd(Drawable drawable) {
            tvButton.setText("Try Again");
        }
    });

}