GenericTouchGesture.java 文件源码

private Runnable createJBRunnable() {
    // On JB, we rely on TimeAnimator to send events tied with vsync.
    return new Runnable() {
        @Override
        public void run() {
            mTimeAnimator = new TimeAnimator();
            mTimeAnimator.setTimeListener(new TimeListener() {
                @Override
                public void onTimeUpdate(TimeAnimator animation, long totalTime,
                        long deltaTime) {
                    if (!sendEvent(mDownTime + totalTime)) {
                        mTimeAnimator.end();
                    }
                }
            });
            mTimeAnimator.start();
        }
    };
}