AudioView.java 文件源码

private void togglePauseToPlay() {
  controlToggle.displayQuick(playButton);

  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
    AnimatedVectorDrawable pauseToPlayDrawable = (AnimatedVectorDrawable)getContext().getDrawable(R.drawable.pause_to_play_animation);
    playButton.setImageDrawable(pauseToPlayDrawable);
    pauseToPlayDrawable.start();
  }
}