UITapGestureRecognizer 区分多指 单双击

LINK ADDRESS:http://www.cocoachina.com/bbs/read.php?tid=73117&fpage=3

前几天又有山大的MM问我，怎么区分单双击。
我说到坛子里找，没过多久，她又说，用touches方法控制的单双击不太好用，还有什么事件冲突……
没办法，帮忙写了一个，也发上来，知道的可掠过，需要的请自取。

复制代码 - (void)viewDidLoad {          UITapGestureRecognizer *singleTapOne = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];     singleTapOne.numberOfTouchesRequired = 1; singleTapOne.numberOfTapsRequired = 1; singleTapOne.delegate = self;          UITapGestureRecognizer *singleTapTwo = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];     singleTapTwo.numberOfTouchesRequired = 2; singleTapTwo.numberOfTapsRequired = 1; singleTapTwo.delegate = self;          UITapGestureRecognizer *doubleTapOne = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleTap:)];     doubleTapOne.numberOfTouchesRequired = 1; doubleTapOne.numberOfTapsRequired = 2; doubleTapOne.delegate = self;          UITapGestureRecognizer *doubleTapTwo = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleTap:)];     doubleTapTwo.numberOfTouchesRequired = 2; doubleTapTwo.numberOfTapsRequired = 2; doubleTapTwo.delegate = self;          [singleTapOne requireGestureRecognizerToFail:doubleTapOne]; // Single tap requires double tap to fail     [singleTapTwo requireGestureRecognizerToFail:doubleTapTwo];          [self.view addGestureRecognizer:singleTapOne]; [singleTapOne release];     [self.view addGestureRecognizer:singleTapTwo]; [singleTapTwo release];     [self.view addGestureRecognizer:doubleTapOne]; [doubleTapOne release];     [self.view addGestureRecognizer:doubleTapTwo]; [doubleTapTwo release];               [super viewDidLoad]; } - (void)handleSingleTap:(UITapGestureRecognizer *)sender {     if (sender.numberOfTouchesRequired == 1) {         NSLog(@"Single Tap with a finger.");     }     else if (sender.numberOfTouchesRequired == 2) {         NSLog(@"Single Tap with two finger.");     } } - (void)handleDoubleTap:(UITapGestureRecognizer *)sender {     if (sender.numberOfTouchesRequired == 1) {         NSLog(@"Double Tap with a finger.");     }     else if (sender.numberOfTouchesRequired == 2) {         NSLog(@"Double Tap with two finger.");     } }