UIAlertView alertViewShouldEnableFirstOtherButton: disables wrong button on iOS7 - ios

Question

I'm currently working on an app that needs to support iOS6 and iOS7.
I'm creating an alert like this:
self.newCategoryAlertView = [[[UIAlertView alloc] initWithTitle:NSLocalizedString(#"MessageTitleNewCategory", nil)
message:NSLocalizedString(#"MessageTextNewCategory", nil)
delegate:self
cancelButtonTitle:nil
otherButtonTitles:NSLocalizedString(#"ButtonOK", nil), NSLocalizedString(#"ButtonCancel", nil), nil] autorelease];
self.newCategoryAlertView.cancelButtonIndex = 1;
self.newCategoryAlertView.tag = alertViewTypeNewCategory;
self.newCategoryAlertView.alertViewStyle = UIAlertViewStylePlainTextInput;
[self.newCategoryAlertView textFieldAtIndex:0].delegate = self;
[self.newCategoryAlertView textFieldAtIndex:0].autocapitalizationType = UITextAutocapitalizationTypeSentences;
[[self.newCategoryAlertView textFieldAtIndex:0] setReturnKeyType:UIReturnKeyDone];
[[self.newCategoryAlertView textFieldAtIndex:0] setKeyboardAppearance:UIKeyboardAppearanceDefault];
[self.newCategoryAlertView textFieldAtIndex:0].enablesReturnKeyAutomatically = YES;
[self.newCategoryAlertView show];
In the delegate I'm implementing the following protocol method
- (BOOL)alertViewShouldEnableFirstOtherButton:(UIAlertView *)alertView
{
if(alertView.tag == alertViewTypeNewCategory)
{
UITextField *textField = [alertView textFieldAtIndex:0];
if (!textField.text || [textField.text isEqualToString:#""])
{
return NO;
} else {
return YES;
}
} else {
return YES;
}
}
My problem is that the left button is disabled running on iOS6 (as expected), but when running on iOS7 the right button is disabled.
I checked the values of cancelButtonIndex and firstOtherButtonIndex inside the delegate method and they are the same in iOS7 and iOS6.
Any hints what I'm doing wrong? Or a workaround to fix this behaviour?

Answer 1

Its seems like iOS 7 has changed arranging order for buttons as per indexes.
I have tried your code and added few more buttons to check arranging order.
[[UIAlertView alloc] initWithTitle:NSLocalizedString(#"MessageTitleNewCategory", nil)
message:NSLocalizedString(#"MessageTextNewCategory", nil)
delegate:self
cancelButtonTitle:nil
otherButtonTitles:NSLocalizedString(#"ButtonOK", nil), NSLocalizedString(#"ButtonCancel", nil),NSLocalizedString(#"Third Button", nil),NSLocalizedString(#"Fourth Button", nil),NSLocalizedString(#"Fifth Button", nil), nil];
For UIAlertView in iOS 7
First button "ButtonOK" is at the top but second button is at the last position and rest buttons placed ascending order same as previous iOS versions.
So, you can check iOS version using [[UIDevice currentDevice] systemVersion] and do
if (iOS 7) {
self.newCategoryAlertView = [[[UIAlertView alloc] initWithTitle:NSLocalizedString(#"MessageTitleNewCategory", nil)
message:NSLocalizedString(#"MessageTextNewCategory", nil)
delegate:self
cancelButtonTitle:nil
otherButtonTitles:NSLocalizedString(#"ButtonCancel", nil),NSLocalizedString(#"ButtonOK", nil), , nil] autorelease];
}else{
self.newCategoryAlertView = [[[UIAlertView alloc] initWithTitle:NSLocalizedString(#"MessageTitleNewCategory", nil)
message:NSLocalizedString(#"MessageTextNewCategory", nil)
delegate:self
cancelButtonTitle:nil
otherButtonTitles:NSLocalizedString(#"ButtonOK", nil), NSLocalizedString(#"ButtonCancel", nil), nil] autorelease];
}