How to detect touches in status bar

user_413559 0
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I have custom view in my application which can be scrolled by the user. This view, however, does not inherit from UIScrollView. Now I want the user to be able to scroll this view to the top, just as any other scrollable view allows. I figured that there is no direct way to do so.

Google turned up one solution: http://cocoawithlove.com/2009/05/intercepting-status-bar-touches-on.html This no longer works on iOS 4.x. That's a no-go.

I had the idea of creating a scrollview and keeping it around somewhere, just to catch it's notifications and then forward them to my control. This is not a nice way to solve my problem, so I am looking for "cleaner" solutions. I like the general approach of the aforementioned link to subclass UIApplication. But what API can give me reliable info?

Are there any thoughts, help, etc...?

Edit: Another thing I don't like about my current solution is that it only works as long as the current view does not have any scroll views. The scroll-to-top gesture works only if exactly one scroll view is around. As soon as the dummy is added (see my answer below for details) to a view with another scrollview, the gesture is completely disabled. Another reason to look for a better solution...

iphone ios
11 Answers

Thanks Max, your solution worked for me after spending ages looking.

For information :

dummyScrollView = [[UIScrollView alloc] init];
dummyScrollView.delegate = self;
[view addSubview:dummyScrollView];
[view sendSubviewToBack:dummyScrollView];

then

  dummyScrollView.contentSize = CGSizeMake(view.frame.size.width, view.frame.size.height+200);
  // scroll it a bit, otherwise scrollViewShouldScrollToTop not called
  dummyScrollView.contentOffset = CGPointMake(0, 1);  

//delegate :
- (BOOL)scrollViewShouldScrollToTop:(UIScrollView *)scrollView
{
  // DETECTED! - do what you need to
  NSLog(@"scrollViewShouldScrollToTop");
  return NO;
}

Note that I had a UIWebView also which I had to hack a bit with a solution I found somewhere :

- (void)webViewDidFinishLoad:(UIWebView *)wv
{  
  [super webViewDidFinishLoad:wv];  

  UIScrollView *scroller = (UIScrollView *)[[webView subviews] objectAtIndex:0];
  if ([scroller respondsToSelector:@selector(setScrollEnabled:)])
    scroller.scrollEnabled = NO; 
}
user_5757790

For iOS 13 this has worked for me, Objective-C category of UIStatusBarManager

@implementation UIStatusBarManager (CAPHandleTapAction)
-(void)handleTapAction:(id)arg1 {
    // Your code here
}
@end
user_13514690
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