Detecting button click with UIAlertView

Question

I am trying to call and alert when a button is pressed. i use this :

-(IBAction)Add { 
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle: @"add button pressed"
                                                    message:@"Add to record"
                                                   delegate:nil     
                                          cancelButtonTitle:@"Cancel" 
                                          otherButtonTitles:@"OK", nil   ];
    [alert show];
    [alert release];    
}

ok , no problem here, two button came up, OK and cancel. Now i want detect which button is pressed i use:

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    // the user clicked one of the OK/Cancel buttons
    if (buttonIndex == 0)
    {
       //just to show its working, i call another alert view
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle: @"OK WORKIng well"
                                                        message:@"no error"                                                                                                            delegate:nil 
                                              cancelButtonTitle:@"IWORKS" 
                                              otherButtonTitles:@"NO PRB", nil];
        [alert show];
        [alert release];    


    }
    else
    {
        NSLog(@"cancel");       
    }
}

now here is the problem. i cannnot detect which button is pressed; the 2nd alertview doesnt show. i've check through the code a couple of times, there doesn't seem to be any problem with it. no error/warning too.

user_1147587 · Answer

This is your code which i used and added some my code also. **

-(IBAction) Add 
{

          UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"add button pressed"

                                                       message:@"Add to record"
                                                      delegate:nil     
                                             cancelButtonTitle:@"Cancel" 
                                             otherButtonTitles:@"OK", nil];

       alert.tag=101;//add tag to alert
       [alert show];
       [alert release];     
}

Now when you press button on alert it will call clickedButtonAtIndex but there should a identifier for every alert. So add tag and then

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

{

//  the user clicked one of the OK/Cancel buttons
if(alertView.tag == 101)     // check alert by tag 
{    

if (buttonIndex == 0)

   {

    //just to show its working, i call another alert view

    UIAlertView *alert = [[UIAlertView alloc] initWithTitle: @"OK WORKIng well"

                                                    message:@"no error"
                                                   delegate:nil
                                          cancelButtonTitle:@"IWORKS" 
                                          otherButtonTitles:@"NO PRB", nil];

    [alert show];
    [alert release];    

}

else

{
    NSLog(@"cancel");       
}
}
}

Hope it helps.

Detecting button click with UIAlertView

6 Answers