android中根據touch事件判斷單擊及雙擊

private static final int MAX_INTERVAL_FOR_CLICK = 250;
    private static final int MAX_DISTANCE_FOR_CLICK = 100;
    private static final int MAX_DOUBLE_CLICK_INTERVAL = 500;
    int mDownX = 0;
    int mDownY = 0;
    int mTempX = 0;
    int mTempY = 0;
    boolean mIsWaitUpEvent = false;
    boolean mIsWaitDoubleClick = false;
    Runnable mTimerForUpEvent = new Runnable() {
        public void run() {
            if (mIsWaitUpEvent) {
                Log.d(LOG_TAG,
                        "The mTimerForUpEvent has executed, so set the mIsWaitUpEvent as false");
                mIsWaitUpEvent = false;
            } else {
                Log.d(LOG_TAG,
                        "The mTimerForUpEvent has executed, mIsWaitUpEvent is false,so do nothing");
            }
        }
    };


    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (!mIsWaitUpEvent && event.getAction() != MotionEvent.ACTION_DOWN) {
            return super.onTouchEvent(event);
        }
        switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN:
            mDownX = (int) event.getX();
            mDownY = (int) event.getY();
            mIsWaitUpEvent = true;
            postDelayed(mTimerForUpEvent, MAX_INTERVAL_FOR_CLICK);
            break;
        case MotionEvent.ACTION_MOVE:
            mTempX = (int) event.getX();
            mTempY = (int) event.getY();
            if (Math.abs(mTempX - mDownX) > MAX_DISTANCE_FOR_CLICK
                    || Math.abs(mTempY - mDownY) > MAX_DISTANCE_FOR_CLICK) {
                mIsWaitUpEvent = false;
                removeCallbacks(mTimerForUpEvent);
                Log.d(LOG_TAG, "The move distance too far:cancel the click");
            }
            break;
        case MotionEvent.ACTION_UP:
            mTempX = (int) event.getX();
            mTempY = (int) event.getY();
            if (Math.abs(mTempX - mDownX) > MAX_DISTANCE_FOR_CLICK
                    || Math.abs(mTempY - mDownY) > MAX_DISTANCE_FOR_CLICK) {
                mIsWaitUpEvent = false;
                removeCallbacks(mTimerForUpEvent);
                Log.d(LOG_TAG,
                        "The touch down and up distance too far:cancel the click");
                break;
            } else {
                mIsWaitUpEvent = false;
                removeCallbacks(mTimerForUpEvent);
                onSingleClick();
                return super.onTouchEvent(event);
            }
        case MotionEvent.ACTION_CANCEL:
            mIsWaitUpEvent = false;
            removeCallbacks(mTimerForUpEvent);
            Log.d(LOG_TAG, "The touch cancel state:cancel the click");
            break;
        default:
            Log.d(LOG_TAG, "irrelevant MotionEvent state:" + event.getAction());
        }
        return super.onTouchEvent(event);
    }


    Runnable mTimerForSecondClick = new Runnable() {
        @Override
        public void run() {
            if (mIsWaitDoubleClick) {
                Log.d(LOG_TAG,
                        "The mTimerForSecondClick has executed,so as a singleClick");
                mIsWaitDoubleClick = false;
                // at here can do something for singleClick!!
            } else {
                Log.d(LOG_TAG,
                        "The mTimerForSecondClick has executed, the doubleclick has executed ,so do thing");
            }
        }
    };

    public void onSingleClick() {
        if (mIsWaitDoubleClick) {
            onDoubleClick();
            mIsWaitDoubleClick = false;
            removeCallbacks(mTimerForSecondClick);
        } else {
            mIsWaitDoubleClick = true;
            postDelayed(mTimerForSecondClick, MAX_DOUBLE_CLICK_INTERVAL);
        }
    }

    public void onDoubleClick() {
        Log.d(LOG_TAG,"we can do sth for double click here");
    }