Question

I am showing a UILabel in appdelegate file on navigation bar (Not exactly on navigation bar). It is showing perfect. But no touch event is calling on it. Touch is working only on status bar. Please help. Thanks in advance.

Here is my code.

CGRect frame=[[UIApplication sharedApplication] statusBarFrame];
backgroundImageView=[[UILabel alloc] initWithFrame:CGRectMake(0, frame.size.height, 320, 44)];        
backgroundImageView.tag=50;
[backgroundImageView setTextAlignment:UITextAlignmentCenter];
[backgroundImageView setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"music.png"]]];
[self.window addSubview:backgroundImageView];

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 
{   
    NSLog(@"in touched");
}

Answer 1

As Tyler states in his answer here:

There is a handy catch-all method in UIWindow called sendEvent: which
sees every event near the start of the event-handling pipeline. If you
want to do any non-standard additional event handling, this is a good
place to put it.

To intercept all touches you should use UIView subclass for your controller view and override hitTest:withEvent: method in it:

    - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event {
        touchedView = [super hitTest:point withEvent:event];
        NSSet* touches = [event allTouches];
        // handle touches if you need
        return touchedView;
        }

OR

2) You can use:

UITapGestureRecognizer *tgr = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(anyMethod)];  
[imageView addGestureRecognizer:tgr];  
[tgr release];  

Before doing this, enable user interaction of UIimageView.