CODEWITHSUNDEEP
iosuiviewuigesturerecognizer
Darren
Darren

Reputation: 10129

UIGestureRecognizers not responding

I have a a number of pop up views saved as properties of a view controller. They are only added to the view when they are presented, and are removed from the view when they are hidden. Everything was working but i changed my code to simplify things and it's no longer working.

Here is an example of how I create and add my gesture recognizers:

UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hidePopUpView:)];
[self.totalPowerPopUpView addGestureRecognizer:tapGestureRecognizer];
[self.co2PopUpView addGestureRecognizer:tapGestureRecognizer];

The views are presented by a selector triggered by pressing a UIButton (there is normally other code in the if statements setting the custom view properties, but I cut it out for simplicity):

- (void)showPopUpView:(UIButton*)sender
{
    CGRect endFrame = CGRectMake(10, 10, 300, 400);
    UIView *popUpView;

    if (sender == self.totalPowerInfoButton)
    {
        [self.view addSubview:self.totalPowerPopUpView];
        popUpView = self.totalPowerPopUpView;
    }
    if (sender == self.co2LevelInfoButton)
    {
        [self.view addSubview:self.co2PopUpView];
        popUpView = self.co2PopUpView;
    }

    [UIView animateWithDuration:0.5
                     animations:^ {
                         popUpView.alpha = 1.0;
                         popUpView.frame = endFrame;
                     }];
}

The popUpView's present, but the gesture recognizer selector doesn't get called when I tap them. Why not?

Upvotes: 0

Views: 720

Answers (2)

iOSDevSF
iOSDevSF

Reputation: 1179

Double check and make sure the UIView you are adding the UIGestureRecognizer to has UserInteractionEnabled set to YES. i.e.

[self.imageView setUserInteractionEnabled:YES];

Upvotes: 1

yuf
yuf

Reputation: 3102

Does this work:

UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc]     initWithTarget:self action:@selector(hidePopUpView:)];
[self.totalPowerPopUpView addGestureRecognizer:tapGestureRecognizer];

tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hidePopUpView:)];
[self.co2PopUpView addGestureRecognizer:tapGestureRecognizer];

Upvotes: 4

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