UIAlertView的慣用法

//UploadViewController.h

@interface UploadViewController : UIViewController <UIAlertViewDelegate>

//UploadViewController.m

- (IBAction)logoutPressed:(id)sender

{

    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Logout" message:@"Are you sure you want to logout?" delegate:self cancelButtonTitle:@"NO" otherButtonTitles:@"YES", nil];

    [alert show];

}

- (void)logout

{

    //TODO:Implement Logout code here...

}

#pragma mark - UIAlertView Delegate

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

{

    if (buttonIndex == alertView.firstOtherButtonIndex) {

        [self logout];

    }

}