测量Android中两个MotionEvent之间的经过时间

测量Android中两个MotionEvent之间的经过时间

long startTime;public boolean onTouchEvent(MotionEvent event) {    if (event.getAction() == MotionEvent.ACTION_DOWN)         startTime = System.nanoTime();    else if (event.getAction() == MotionEvent.ACTION_UP) {        long elapseTime = System.nanoTime() - startTime;        //do whatever u want with elapseTime now, its in nanoseconds    }}