Dismiss all UIAlertview from application in iOS7

Question

I want to remove all UIAlertview in my application when i enter to background mode. I am using the following code to do that.

for (UIWindow* w in [UIApplication sharedApplication].windows)
    for (NSObject *o in w.subviews)
    {
        if ([o isKindOfClass:[UIAlertView class]])
        {
            [(UIAlertView *)o dismissWithClickedButtonIndex:[(UIAlertView *)o cancelButtonIndex] animated:YES];
        }
    }

It is working properly in iOS6. When i run the same application in iOS7 device it is not working. Have any ideas?

How does it not work? What exactly happens? Does it make it into the `if statement`? — Popeye, Dec 27 '13 at 13:04
No it is not going into if statement even alert view is visible — Gowtham R, Dec 27 '13 at 13:10
In iOS7, `windows` does not contain the alert view windows. They are managed by another stack of windows which are not exposed. — Léo Natan, Dec 27 '13 at 13:11

score 2 · Answer 1 · answered Dec 27 '13 at 13:35

2

There is _UIAlertManager private class which has a method topMostAlert which returns top most alert. This works in iOS 7.0 also.

UIAlertView *topAlert = [NSClassFromString(@"_UIAlertManager") 
performSelector:@selector(topMostAlert)]

answered Dec 27 '13 at 13:35

reamd

41
5

This is not safe for AppStore. – Léo Natan Dec 27 '13 at 13:42

score 1 · Answer 2 · answered Dec 27 '13 at 13:15

1

Try This one

UIWindow *window = [UIApplication sharedApplication].keyWindow;
for (UIView *view in w.subviews) {
    if ([view isKindOfClass:[UIAlertView class]]) {
        [(UIAlertView *)view dismissWithClickedButtonIndex:[(UIAlertView *)view cancelButtonIndex] animated:YES];
    }
}

answered Dec 27 '13 at 13:15

Hemant Chittora

3,152
3
19
25

1

This is also not working. This code stopped working in iOS6 itself. – Gowtham R Dec 27 '13 at 13:16
This doesn't detect the UIAlertView from the window's subviews. – Asif Bilal Sep 15 '14 at 12:43

score 0 · Answer 3 · edited Dec 27 '13 at 13:09

0

Please use this hope it will help you

    for (UIWindow* w in [UIApplication sharedApplication].windows) {
      for (NSObject *o in w.subviews) {
         for (NSObject *secnonO in o.subviews) {
          if ([secnonO isKindOfClass:[UIAlertView class]]) {
              [(UIAlertView *)o dismissWithClickedButtonIndex:[(UIAlertView *)o cancelButtonIndex] animated:YES];
           }
         }
       }
   }

edited Dec 27 '13 at 13:09

Hemant Chittora

3,152
3
19
25

answered Dec 27 '13 at 13:04

Abhishek Gupta

601
5
16

There is no subviews property for NSObject class – Gowtham R Dec 27 '13 at 13:09
This does not work on iOS7. – Léo Natan Dec 27 '13 at 13:11
Is there any other ways to do this – Gowtham R Dec 27 '13 at 13:12

score -1 · Answer 4 · answered Dec 27 '13 at 13:34

Use this recursive method

- (void)removeAlert:(NSArray *)subviews {
    for (UIView * subview in subviews){
        if ([subview isKindOfClass:[UIAlertView class]]){
            [(UIAlertView *)subview dismissWithClickedButtonIndex:[(UIAlertView *)subview cancelButtonIndex] animated:NO];
        } else {
            [self removeAlert:subview.subviews];
        }
    }
}

Call it from applicationDidEnterBackground like this

[self removeAlert:application.windows];

Hope this helps.

Doesn't work on iOS7. `windows` does not contain the alert view windows. — Léo Natan, Dec 27 '13 at 13:43

Dismiss all UIAlertview from application in iOS7

4 Answers4