Signature获取点压力时间android

public class MyView extends View {
    public MyView(Context context) {
        super(context);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        int action = event.getAction();
        long eventTime = event.getEventTime();

        switch (action) {
            case MotionEvent.ACTION_DOWN:
                // 用户按下时的时间点
                Log.d("Touch", "按下时间：" + eventTime);
                break;
            case MotionEvent.ACTION_UP:
                // 用户抬起时的时间点
                Log.d("Touch", "抬起时间：" + eventTime);
                break;
        }

        return true;
    }
}