CODEWITHSUNDEEP
objective-cios8nsoperationuialertcontroller
Shmidt
Shmidt

Reputation: 16664

Present UIAlertController from NSOperation

What I tried is:

- (void)main
{
    NSError *err = (__bridge NSError *)error;
                    UIAlertController * alert = [UIAlertController
                                                 alertControllerWithTitle:NSLocalizedString(@"Error", nil)
                                                 message:err.localizedDescription
                                                 preferredStyle:UIAlertControllerStyleAlert];


                    UIAlertAction* ok = [UIAlertAction
                                         actionWithTitle:@"OK"
                                         style:UIAlertActionStyleDefault
                                         handler:^(UIAlertAction * action)
                                         {
                                             //Do some thing here
                                            [self.window.rootViewController dismissViewControllerAnimated:YES completion:nil];
                                         }];
...
}

The problem is that there is no access to self.window in my NSOperation subclass. Is there any other way to present alert controller?

Upvotes: 1

Views: 440

Answers (1)

l0gg3r
l0gg3r

Reputation: 8954

UIApplicationDelegate instance keeps window object, so you can get it and use for your purposes.

  [[UIApplication sharedApplication].delegate window]

Also [UIApplication sharedApplication] provides other methods which you may be useful to you:

  • - windows - an array of all the windows;
  • – keyWindow - gives the window that is receiving keyboard input (or nil);

If you are not creating additional windows, then using [[UIApplication sharedApplication].delegate window] will be fine.

Upvotes: 1

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