ios - 如何在调用触摸手势事件时检查其父 View 或 subview ？

Question

我有两种看法。一种是包含 subview 的透明 View 。我只想在单击父 View 时删除 screenView。我不想在单击 popUpView 时调用 tapGesture。怎么才能查到？

screenView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT)];
screenView.backgroundColor = [UIColor clearColor];
UITapGestureRecognizer * clearTable = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(clearTableViewAction:)];
[clearTable setNumberOfTapsRequired:1];
[screenView setUserInteractionEnabled:YES];
[screenView addGestureRecognizer:clearTable];
screenView.tag = 100;
[self.view addSubview:screenView];

self.popUpView = [[UIView alloc]init];
self.popUpView.frame = ...
self.popUpView.backgroundColor = WhiteColor;
self.popUpView.userInteractionEnabled = YES;
self.popUpView.tag = 200;
[screenView addSubview:self.popUpView];  

-(void)clearTableViewAction:(UITapGestureRecognizer*)sender {
    if(sender.view.tag == 100){
         [UIView animateWithDuration:0.2
                     animations:^{screenView.alpha = 0.0;}
                     completion:^(BOOL finished){ [screenView removeFromSuperview];
         }];
    }
}

Answer 1

使用shouldReceiveTouch委托(delegate)方法并检查:

喜欢，

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch 
{
    if ([touch.view.tag == 100) 
    {
        return YES;
    }
    else 
    {
        return NO; 
    }
}

现在，如果您在 popUpView 中单击，将不会调用 clearTableViewAction 手势方法。