GameActivity.java 文件源码

public void showStopwatchRipple()
{
    new Handler(Looper.getMainLooper()).post(new Runnable()
    {
        @Override
        public void run()
        {
            View stopwatchView = findViewById(R.id.stopwatch);
            if(stopwatchView!=null)
            {
                RippleDrawable rd = (RippleDrawable) stopwatchView.getBackground();
                rd.setState(new int[] { android.R.attr.state_pressed, android.R.attr.state_enabled });
                rd.setState(new int[] {  });
            }
        }
    });
}