Question

i have been trying to copy text input from alertview textfield to a NSMutableArray that i will use later, alertview pops up and i enter the input to text field but when i press OK alert view disappears but doesnt copy text to my mutable array

here is my code

-(IBAction)add:(UIButton *)sender
{
    addCustomStand = [[NSMutableArray alloc] init];
    UIAlertView* dialog = [[UIAlertView alloc] initWithTitle:@"Enter a Stand Location"
                                                     message:@"  "   
                                                    delegate:self 
                                           cancelButtonTitle:@"Cancel"
                                           otherButtonTitles:@"OK", nil];

    UITextField *nameField = [[UITextField alloc] 
                              initWithFrame:CGRectMake(20.0, 45.0, 245.0, 25.0)];
    [nameField setBackgroundColor:[UIColor whiteColor]];
     nameField.text = @"";
    [dialog addSubview:nameField];

    if ([nameField text]){
        NSLog(@"Name Field %@ ",nameField.text);
        [addCustomStand addObject:nameField.text];
    }

    [nameField release];
    [dialog show];
    [dialog release];   
}

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    NSString *title = [alertView buttonTitleAtIndex:buttonIndex];

    if([title isEqualToString:@"OK"])
    {
        NSLog(@"Button 1 was selected.");
        NSLog(@"StandLocations %@ ",addCustomStand);
    }
}

here is my output on log screen

2012-02-07 20:26:57.315 Avicii[1399:b603] Name Field  
2012-02-07 20:26:59.720 Avicii[1399:b603] Button 1 was selected.
2012-02-07 20:26:59.721 Avicii[1399:b603] StandLocations (
    ""
)

anyone can help whats wrong with that code?

Answer 1

That’s because [nameField text] doesn’t have user entered value yet when you added it in your [addCustomStand addObject:nameField.text];

so change your adding into array in UIAlertView delegate method.

-(IBAction)add:(UIButton *)sender
{
    addCustomStand = [[NSMutableArray alloc] init];
    UIAlertView* dialog = [[UIAlertView alloc] initWithTitle:@"Enter a Stand Location"
                                                     message:@"  "   
                                                    delegate:self 
                                           cancelButtonTitle:@"Cancel"
                                           otherButtonTitles:@"OK", nil];

    UITextField *nameField = [[UITextField alloc] 
                              initWithFrame:CGRectMake(20.0, 45.0, 245.0, 25.0)];
    [nameField setBackgroundColor:[UIColor whiteColor]];
    nameField.text = @"";
    // Note at this line
    nameField.tag = 100; 
    //
    [dialog addSubview:nameField];

    [nameField release];
    [dialog show];
    [dialog release];   
}

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    NSString *title = [alertView buttonTitleAtIndex:buttonIndex];

    if([title isEqualToString:@"OK"])
    {
        // Note at this line
        UITextField* nameField = (UITextField *)[alertView viewWithTag:100];
        [addCustomStand addObject:nameField.text];
        //
        NSLog(@"Button 1 was selected.");
        NSLog(@"StandLocations %@ ",addCustomStand);
    }
}