Question

我有parentView和subView childView。 childView位于parentView的中间位置，大约只有它的一半。

我想在用户点按childView时关闭parentView。

如果UITapGestureRecognizer打开，我的代码会在parentView中创建childView。

我的问题是当用户触摸任何视图时触发了点击事件，而不仅仅是parentView。

因此，我想知道如果只触摸了parentView，我怎么才能让事件发生？如果触摸了父视图，我怎么能关闭子视图呢？

- (IBAction)selectRoutine:(id)sender {
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Storyboard" bundle:nil];

    createRoutinePopupViewController* popupController = [storyboard instantiateViewControllerWithIdentifier:@"createRoutinePopupView"];

    popupController.view.center = CGPointMake(self.view.bounds.size.width / 2, self.view.bounds.size.height / 2);
    _ass = popupController;
    //Tell the operating system the CreateRoutine view controller
    //is becoming a child:
    [self addChildViewController:popupController];

    //add the target frame to self's view:
    [self.view addSubview:popupController.view];

    //Tell the operating system the view controller has moved:
    [popupController didMoveToParentViewController:self];

    UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];

    [singleTap setNumberOfTapsRequired:1];

    [self.view addGestureRecognizer:singleTap];

}
-(void) handleSingleTap: (id) sender {
    NSLog(@"TEST STRING");
}

Answer 1

您需要使用UIGestureRecognizerDelegate，实现以下方法。

它将检查触摸的视图。

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
    if( [touch view] != popupController.view)
        return YES;

    return NO;
}

触摸父视图时关闭子视图

1 个答案: