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iPhone - How to handle errors at runtime

[self kill];

[OneClass exitWithFatalErrorMessage];

return nil;

 

- (void) exitWithFatalErrorMessage:(NSString*)message

{

    UIAlertView* alert = [[UIAlertView alloc] initWithTitle:NSLocalizedStringFromTable(@"Error" @"ErrorMessages", @"") message:message delegate:self cancelButtonTitle:NSLocalizedStringFromTable(@"Understood", @"ErrorMessages", @"") otherButtonTitles: nil];

    [alert show];

    [alert release];

}

 

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex

{

    // stop the normal running of the app, there is a situation that would prevent it

}

 

- (void)kill

{

    self.member = nil;

    self.member2 = nil;

    ...

}

       

[OneClass exitWithFatalErrorMessage:@"Message"];