如何利用UITapGestureRecognizer同时检测抽头和双抽头？
如何利用UITapGestureRecognizer同时检测抽头和双抽头？
提问于 2013-10-01 23:09:57
例如，我有一个视图，其中我需要两个不同的手势：
用双击做动作B。
问题是，对于UITapGestureRecognizer，我只能设置最小的所需的点击计数。单点击手势识别器在双点击手势识别器识别双抽头之前识别出抽头。
示例：
_tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGestureRecognized:)];
_tapGestureRecognizer.numberOfTouchesRequired = 1;
_tapGestureRecognizer.numberOfTapsRequired = 1;
[self addGestureRecognizer:_tapGestureRecognizer];
_doubleTapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doubleTapGestureRecognized:)];
_doubleTapGestureRecognizer.numberOfTouchesRequired = 1;
_doubleTapGestureRecognizer.numberOfTapsRequired = 2;
[self addGestureRecognizer:_doubleTapGestureRecognizer];它总是识别单点击，即使我做双击非常快。我如何设置它，以便点击手势识别器等待并查看双点击手势识别器是否识别？
回答 4
Stack Overflow用户
回答已采纳
发布于 2013-10-01 23:13:53
这是我在我的一个旧项目中使用过的东西，希望它能帮助你走出困境。
UITapGestureRecognizer *singleTap = [[[UITapGestureRecognizer alloc] initWithTarget: self action:@selector(doSingleTap)] autorelease];
singleTap.numberOfTapsRequired = 1;
[self.view addGestureRecognizer:singleTap];
UITapGestureRecognizer *doubleTap = [[[UITapGestureRecognizer alloc] initWithTarget: self action:@selector(doDoubleTap)] autorelease];
doubleTap.numberOfTapsRequired = 2;
[self.view addGestureRecognizer:doubleTap];
[singleTap requireGestureRecognizerToFail:doubleTap];Stack Overflow用户
发布于 2016-11-02 04:41:23
斯威夫特3号和斯威夫特4号：
let singleTap = UITapGestureRecognizer(target: self, action: #selector(doSingleTap))
singleTap.numberOfTapsRequired = 1
self.view.addGestureRecognizer(singleTap)
let doubleTap = UITapGestureRecognizer(target: self, action: #selector(doDoubleTap))
doubleTap.numberOfTapsRequired = 2
self.view.addGestureRecognizer(doubleTap)
singleTap.require(toFail: doubleTap)Stack Overflow用户
发布于 2017-05-10 13:29:28
{ UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(handleDoubleTapGesture:)];
[doubleTap setDelegate:self];
doubleTap.numberOfTapsRequired = 2;
[self.headerView addGestureRecognizer:doubleTap];
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(handleSingleTapGesture:)];
singleTap.numberOfTapsRequired = 1;
[singleTap setDelegate:self];
[doubleTap setDelaysTouchesBegan:YES];
[singleTap setDelaysTouchesBegan:YES];
[self.headerView addGestureRecognizer:singleTap];
}
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{
return YES;
}
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{
return YES;
}在任何您需要的方法中创建手势识别器。例如，如果您希望在headerView中使用tableView中的点击手势，则在其中创建这些点击手势
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section您的类应该实现UIGestureRecognizerDelegate。上面提到的是该委托类的两个方法。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/19127501
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