Handling "OK" button from UIAlertView - objective-c

Question

I have an alert view set up for two names to be entered like so
UITextField *player1;
UITextField *player2;
UIAlertView *prompt = [[UIAlertView alloc] initWithTitle:#"Enter 2 player names"
message:#"\n\n\n" // IMPORTANT
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
player1 = [[UITextField alloc] initWithFrame:CGRectMake(12, 50, 260, 25)];
[player1 setBackgroundColor:[UIColor whiteColor]];
[player1 setPlaceholder:#"player1"];
[prompt addSubview:player1];
player2 = [[UITextField alloc] initWithFrame:CGRectMake(12, 85, 260, 25)];
[player2 setBackgroundColor:[UIColor whiteColor]];
[player2 setPlaceholder:#"player2"];
[prompt addSubview:player2];
// set place
[prompt setTransform:CGAffineTransformMakeTranslation(0, 110)];
[prompt show];
//[prompt release];
// set cursor and show keyboard
[player1 becomeFirstResponder];
Now I would like to handle the "OK" button click. I'm attempting to do something like this with no luck..
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 0)
{
NSLog(#"cancel");
}
else
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"OK works" message:#"no error" delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alert show];
[alert release];
}
}
From what I've read this should work. However when I press the 'ok' button nothing happens.

Answer 1

You need to set self for delegate for the UIAlertView.
UIAlertView *prompt = [[UIAlertView alloc] initWithTitle:#"Enter 2 player names"
message:#"\n\n\n" // IMPORTANT
delegate:self
cancelButtonTitle:#"OK"
otherButtonTitles:nil];

Answer 2

Note: Not related original question but as per comment "Could you give me a few more details as to what you mean to assign tag to textfield and then get the textfield & its value? " I am posting answer here.
Assign tags to textfields
UIAlertView *prompt = [[UIAlertView alloc] initWithTitle:#"Enter 2 player names"
message:#"\n\n\n" // IMPORTANT
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
player1 = [[UITextField alloc] initWithFrame:CGRectMake(12, 50, 260, 25)];
[player1 setBackgroundColor:[UIColor whiteColor]];
[player1 setPlaceholder:#"player1"];
[player1 setTag:100]; // added this
[prompt addSubview:player1];
player2 = [[UITextField alloc] initWithFrame:CGRectMake(12, 85, 260, 25)];
[player2 setBackgroundColor:[UIColor whiteColor]];
[player2 setPlaceholder:#"player2"];
[player2 setTag:200]; // added this
[prompt addSubview:player2];
// set place
[prompt setTransform:CGAffineTransformMakeTranslation(0, 110)];
[prompt show];
//[prompt release];
// set cursor and show keyboard
[player1 becomeFirstResponder];
Retrieving value
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 0)
{
NSLog(#"cancel");
}
else
{
UITextField *txtPlayer1 = (UITextField*)[alertView viewWithTag:100];
NSLog(#"Value for player1: %#",txtPlayer1.text);
UITextField *txtPlayer2 = (UITextField*)[alertView viewWithTag:200];
NSLog(#"Value for player2: %#",txtPlayer2.text);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"OK works" message:#"no error" delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alert show];
[alert release];
}
}

Answer 3

I use the following code to check the button index of the alertview.
as stated setting delegate to self too when showing the UIAlertview, then...
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 0) {
NSLog(#"index 0 pressed ie cancel button");
// do something when cancel pressed
}
else NSLog(#"index 1 pressed ie ok button");
// do something when ok button pressed
}