UITapGestureRecognizer用于检测在我的屏幕上点击了哪个UIView

我正在使用UITapGestureRecognizer来检测哪个UIView是在我的屏幕上点击，但由于某种原因，它只能检测到父视图点击，例如下面的代码日志只有父视图标记。 如何检测在主视图中存在的子视图水龙头？ 请build议。

 Inside View did load :- UITapGestureRecognizer *viewTapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(actionForViewTapped:)]; [self.view addGestureRecognizer:viewTapRecognizer]; -(void) actionForViewTapped:(UITapGestureRecognizer*)sender { NSLog(@"view tapped"); UIView *view = sender.view; NSLog(@"view tag is %lu", view.tag); //Always prints parent view tag. if(view.tag == 10){ NSLog(@"tag1 tapped"); // not called } if(view.tag == 20){ NSLog(@"tag 2 tapped"); // not called } } 

Answer 1

你可以使用下面的代码检测子视图，我只是testing创build示例项目。

 -(void) actionForViewTapped:(UITapGestureRecognizer*)sender { NSLog(@"view tapped"); UIView *view = sender.view; CGPoint loc = [sender locationInView:view]; UIView* subview = [view hitTest:loc withEvent:nil]; NSLog(@"view tag is %lu", subview.tag); //will print Subview tag. if(view.tag == 10){ NSLog(@"tag1 tapped"); } if(view.tag == 20){ NSLog(@"tag 2 tapped"); } } 

Answer 2

UIGestureRecognizer将用于单个视图。

如果你想使用UIGestureRecognizer你将不得不为每个视图创build一个，调用相同的方法。