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

1. - (void)viewDidLoad {
2.     
3.     UITapGestureRecognizer *singleTapOne = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];
4.     singleTapOne.numberOfTouchesRequired = 1; singleTapOne.numberOfTapsRequired = 1; singleTapOne.delegate = self;
5.     
6.     UITapGestureRecognizer *singleTapTwo = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];
7.     singleTapTwo.numberOfTouchesRequired = 2; singleTapTwo.numberOfTapsRequired = 1; singleTapTwo.delegate = self;
8.     
9.     UITapGestureRecognizer *doubleTapOne = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleTap:)];
10.     doubleTapOne.numberOfTouchesRequired = 1; doubleTapOne.numberOfTapsRequired = 2; doubleTapOne.delegate = self;
11.     
12.     UITapGestureRecognizer *doubleTapTwo = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleTap:)];
13.     doubleTapTwo.numberOfTouchesRequired = 2; doubleTapTwo.numberOfTapsRequired = 2; doubleTapTwo.delegate = self;
14.     
15.     [singleTapOne requireGestureRecognizerToFail:doubleTapOne]; // Single tap requires double tap to fail
16.     [singleTapTwo requireGestureRecognizerToFail:doubleTapTwo];
17.     
18.     [self.view addGestureRecognizer:singleTapOne]; [singleTapOne release];
19.     [self.view addGestureRecognizer:singleTapTwo]; [singleTapTwo release];
20.     [self.view addGestureRecognizer:doubleTapOne]; [doubleTapOne release];
21.     [self.view addGestureRecognizer:doubleTapTwo]; [doubleTapTwo release];
22.     
23.     
24.     [super viewDidLoad];
25. }
27. - (void)handleSingleTap:(UITapGestureRecognizer *)sender {
28.     if (sender.numberOfTouchesRequired == 1) {
29.         NSLog(@"Single Tap with a finger.");
30.     }
31.     else if (sender.numberOfTouchesRequired == 2) {
32.         NSLog(@"Single Tap with two finger.");
33.     }
34. }
35. - (void)handleDoubleTap:(UITapGestureRecognizer *)sender {
36.     if (sender.numberOfTouchesRequired == 1) {
37.         NSLog(@"Double Tap with a finger.");
38.     }
39.     else if (sender.numberOfTouchesRequired == 2) {
40.         NSLog(@"Double Tap with two finger.");
41.     }
42. }