CODEWITHSUNDEEP
objective-ciosviewtouch
ios85
ios85

Reputation: 2134

Trouble using touchesEnded with a UIImageView

I have been trying to play around with the touchedBegan, and touchedEnded. I basically am just trying to create an image in my view. Then be able to do something when the user touches the image. When I touch the image It does ever execute the code inside my if statement. Any idea on what I am doing wrong?

viewDidload:

UIImage *image = [UIImage imageNamed:@"myimage1.png"];
imageView = [[UIImageView alloc] initWithImage:image];
imageView.frame = CGRectMake(0, 0, 320, 200);
[self.view addSubview:imageView];
imageViewsArray = [NSArray arrayWithObjects:imageView, nil];

touchesEnded:

-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {

    UITouch *touch = [touches anyObject];

    // do this on touch
    UIView *touchedView = [touch view];
    if ([imageViewsArray indexOfObject:touchedView] != NSNotFound) {
        // not not found means found!
        NSLog(@"Got Touch!");
    }
}

I also tried using this if statement:

if ([[touch view] isKindOfClass:[UIImageView class]]) {
        NSLog(@"Got Touch 2!");
}

Upvotes: 1

Views: 588

Answers (2)

tiguero
tiguero

Reputation: 11537

Like DrummerB said i will recommend using the UITapGestureRecognizer instead. Have a look to the official doc here to get a good understanding of how it works but the main thing is to associate a gesture recognizer to the view that will handle the tap. In your case since you are dealing with a UIImageView make sure that you turn on the property userInteractionEnabled this is set to NO by default for the UIImageView: in another word the imageView are not picking up event by default.

Upvotes: 1

DrummerB
DrummerB

Reputation: 40201

If you want to be notified about a tap on your image view I recommend using a simpler approach using an UITapGestureRecognizer.

// After initializing and adding your UIImageView:
UITapGestureRecognizer *gr = [[UITapGestureRecognizer alloc] initWithTarget:self       
                               action:@selector(handleTap:)];
[imageView addGestureRecognizer:gr];


- (void)handleTap:(UITapGestureRecognizer *)gr {
    NSLog(@"Touched!");
}

If you want to stick with touchesEnded, try these steps:

  • Check if your imageViews array is not nil in touchesEnded.
  • Log [touch view] to see which view is receiving the touch.

Upvotes: 1

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