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iphoneiostouchimageviewtouchesbegan

Touchesbegan not detecting what is being touched


I'm building a rotating banner using a NSTimer to keep track of the current image with the image being animated from 5 different images. I have a touchesBegan set up to keep handle the touch event on the banner if someone clicks it. My proof-of-concept works, but moving it into another project, it breaks.

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
UITouch *touch = [[event allTouches] anyObject];
if ([touch view] == myImageView){
    [self getImage];
    NSLog(@"%@", currentImage);
}
}

Now when I put break points into my project, it grabs the touch just fine, but when it gets to the if ([touch view] == myImageView) it doesn't detect that the image view is being touched.


Solution

  • Not sure what would cause that but have you tried using a UIGestureRecognizer? Try something like the code below and see if the method gets called.

      //Add Gesture Recognizer
      UITapGestureRecognizer *tapped = [[UITapGestureRecognizer alloc] initWithTarget:self    action:@selector(imageSelected)];
      tapped.numberOfTapsRequired = 1;
      [theImageView addGestureRecognizer:tapped];
    
      //Memory Cleanup
      [tapped release];
    
     -(void)imageSelected
      {
        NSLog(@"Selected an Image");
      }