UIAlertView not responding to button event - ios

Question

First time working with UIAlertViews and I can't figure out why this doesn't work. When I click on either button, the alert closes, but there is no NSLog output. What am I doing wrong? I can't figure it out. Thanks!
.h
#interface LoginViewController : UIViewController <UIAlertViewDelegate>
#end
.m
- (IBAction)resetPassword:(UIButton *)sender {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Password Reset"
message:#"A temporary password will be sent to you at the address we have on file."
delegate:nil
cancelButtonTitle:#"Cancel"
otherButtonTitles:#"Reset Password", nil];
[alert show];
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 0) NSLog(#"button 0");
if (buttonIndex == 1) NSLog(#"button 1");
}

Answer 1

It appears that you never set the delegate on the UIAlertView. It should be:
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Password Reset"
message:#"A temporary password will be sent to you at the address we have on file."
delegate:self
cancelButtonTitle:#"Cancel"
otherButtonTitles:#"Reset Password", nil];
This way the UIAlertView is able to call your method, - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex, when the user taps a button.

Answer 2

You're setting the delegate to nil. You need to set it to your controller instance, like this:
- (IBAction)resetPassword:(UIButton *)sender {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Password Reset"
message:#"A temporary password will be sent to you at the address we have on file."
delegate:self
cancelButtonTitle:#"Cancel"
otherButtonTitles:#"Reset Password", nil];
[alert show];
}
Implementing the -alertView:clickedButtonAtIndex: delegate method does little good if you never give the UIAlertView an object to serve as the delegate.