android中根据touch事件判断单击及双击

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");  
    }
    
    
    come from http://blog.csdn.net/mydreamongo/article/details/38405659