Can i check if any UIAlertView displaying right now?

Question

Can I in any part of my iOS application check if any UIAlertView displaying right now? I found this code

[NSClassFromString(@"_UIAlertManager") performSelector:@selector(topMostAlert)]

but it is private API and my app could be rejected by Apple. Are there any legal ways to do this?

Check this question: [link](http://stackoverflow.com/q/10727957/2298998) — iOS Dev, Jan 17 '14 at 07:15
It is a private API but somewhere I read that using performselector is ok with Apple's static code analysis. But you need to be double sure. — Kumar Aditya, Jan 17 '14 at 07:35

IronManGill · Accepted Answer · 2014-01-17T07:55:30.803

7

For devices less than iOS 7 :-

When you make the body of the UIAlertView , the [alertView Show] adds a subview on the main window. So to detect the UIAlertView you simply have to check for the subviews of the current UIView as UIAlertView inherits from UIView.

for (UIWindow* window in [UIApplication sharedApplication].windows){
    for (UIView *subView in [window subviews]){
        if ([subView isKindOfClass:[UIAlertView class]]) {
            NSLog(@"AlertView is Present");
        }else {
            NSLog(@"AlertView Not Available");
        }
    }
}

EDIT:- For devices using iOS 7

Class UIAlertManager = objc_getClass("_UIAlertManager");
UIAlertView *Alert = [UIAlertManager performSelector:@selector(Alert)];

and

UIAlertView *Alert = [NSClassFromString(@"_UIAlertManager") performSelector:@selector(Alert)];

NOTE :- If you cannot use third party API's then your only real option in iOS7 is to actually keep track of your alert views.

edited Jan 17 '14 at 07:55

answered Jan 17 '14 at 07:15

IronManGill

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Thank you. Brute force, but it's working. – Padavan Jan 17 '14 at 07:22
Did you try it? I try just now and it don't working. Always "AlertView Not Available". – Padavan Jan 17 '14 at 07:31
It will not work on ios7 devices. Because in ios7 devices keywindow is being used. – Kumar Aditya Jan 17 '14 at 07:32
This works but I think you should keep references to your alert views... – IronManGill Jan 17 '14 at 07:37
your edited answer is pointing to use private API which is asked in the question. – Tapas Pal Jan 17 '14 at 07:37
@TapasPal Well I have mentioned that he should keep references to his alert views – IronManGill Jan 17 '14 at 07:38
@IronManGill It's not possible to keep references to all alerts. Some alerts called by third libraries, some by StoreKit. Are there any legal way check any alerts exist in iOS7? – Padavan Jan 17 '14 at 07:43
@Padavan If you cannot use third party API's then your only real option in iOS7 is to actually keep track of your alert views. – IronManGill Jan 17 '14 at 07:55

score 1 · Answer 2 · answered Jan 17 '14 at 07:17

1

you can check like this.

-(BOOL) doesAlertViewExist {
  for (UIWindow* window in [UIApplication sharedApplication].windows) {
    NSArray* subviews = window.subviews;
    if ([subviews count] > 0) {

      BOOL alert = [[subviews objectAtIndex:0] isKindOfClass:[UIAlertView class]];
      BOOL action = [[subviews objectAtIndex:0] isKindOfClass:[UIActionSheet class]];

      if (alert || action)
        return YES;
     }
  }
  return NO;
}

answered Jan 17 '14 at 07:17

Bhavin_m

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This solution does not work on iOS 7 onwards. Is there any other way for iOS 7 onwards? – Ganesh Amrule Mar 05 '15 at 09:23

Can i check if any UIAlertView displaying right now?

2 Answers2

Linked