ios - 触摸父 View 时关闭 subview

Question

我有 parentView 和 subView childView。childView 位于我的 parentView 的中间，大约是它的一半大小。

我想在用户点击 parentView 时关闭 childView。

一旦 childView 打开，我的如下代码会在 parentView 中创建一个 UITapGestureRecognizer。

我的问题是，当用户触摸任何 View 时都会触发点击事件，而不仅仅是 parentView。

因此，我想知道如果仅触摸 parentView 或任何其他可能在触摸父 View 时关闭 subview ，我怎样才能使事件发生。

- (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

你需要使用 UIGestureRecognizerDelegate ，实现下面的方法。

它将检查触摸的 View 。

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

    return NO;
}