Question

In my application I need to remove any alerts visible in the window, when the app goes to background.But the problem is that, I don’t want to dismiss it with

[alert dismissWithClickedButtonIndex:0 animated:YES]

because, it will trigger the clickedButtonAtIndex Delegate and will invoke a method.I wan’t to avoid this when app goes to background.

I did it successfully by removing the alertView from the subViews of window using the following code

  for (UIWindow *window in [UIApplication sharedApplication].windows) {
        for (UIView *view in [window subviews]) {
            if ([view isKindOfClass:[UIAlertView class]]) {
                [view removeFromSuperview];
            }

        }

But the problem is that the _UIAlertNormalizingOverlayWindow is still there and it blocks the user Interaction.I need to remove the _UIAlertNormalizingOverlayWindow also from my window.
Please help me to do this or please suggest any alternatives to achieve the solution .

Answer 1

Although it’s not a very clean solution (assumes ivar BOOL _backgroundAlertFlag

- (void)applicationDidEnterBackground:(UIApplication *)application {
    _backgroundAlertFlag = YES;

    // find your UIAlertView as you are doing already

    [alert dismissWithClickedButtonIndex:0 animated:NO];
    _backgroundAlertFlag = NO;
}

Then in your UIAlertViewDelegate method:

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    if( !_backgroundAlertFlag )
    {
        // handle alert processing normally here
    }
    // other wise ignore (just dismiss)
}