UITextField in UIAlertView on iPhone - how to make it responsive?

Question

I placed a UITextField into a UIAlertView and moved it up so the keyboard wouldn\'t cover it up with the following code:

[dialog setDelegate:self];
[dialog s         


        

Answer 1

It's worth checking out

http://junecloud.com/journal/code/displaying-a-password-or-text-entry-prompt-on-the-iphone.html?cmd=success#comment3870

For a complete and comprehensive solution.

Answer 2

This is for iOS5 and ARC.

-(void)showAlert {
    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"New Album" 
        message:@"Enter a name for the album." 
        delegate:self 
        cancelButtonTitle:@"Cancel" 
        otherButtonTitles:@"Save", nil];
    alertView.alertViewStyle = UIAlertViewStylePlainTextInput;

    UITextField* textfield = [alertView textFieldAtIndex:0];
    textfield.placeholder = @"Title";

    [alertView show];
}

-(void)alertView:(UIAlertView *)alertView 
    didDismissWithButtonIndex:(NSInteger)buttonIndex 
{
    if (buttonIndex != 1) {
        NSLog(@"Cancel");
        return;
    }
    UITextField* textfield = [alertView textFieldAtIndex:0];
    NSLog(@"Save. text: %@", textfield.text);
}

Answer 3

A simple way to locate the text field, without keeping an explicit reference to it, is to set its tag:

nameField.tag = ALERTVIEW_NAMEFIELD;

Make sure it is different from 0 and from other UIView object tags you may have, including the parent dialog!

Then inside the alertView:clickedButtonAtIndex: handler, you can retrieve your text field this way:

UITextField *nameField = (UITextField *)[alertView viewWithTag:ALERTVIEW_NAMEFIELD];

Answer 4

Would like to add one minor tweak to iWasRobbed's answer:

GenericAlertDialogs.m:

+ (void)displayInputDialog:(NSString*)title delegate:(id<UIAlertViewDelegate>)delegate textFiled:(UITextField*)txtField
{
    UIAlertView* dialog = [[UIAlertView alloc] init];
    [dialog setDelegate:delegate];
    [dialog setTitle:title];
    [dialog setMessage:@" "];
    [dialog addButtonWithTitle:@"Cancel"];
    [dialog addButtonWithTitle:@"OK"];

    if(UIInterfaceOrientationIsPortrait([[UIApplication sharedApplication] statusBarOrientation]))
    {
        txtField.frame = CGRectMake(20.0, 45.0, 245.0, 25.0);
    }
    else 
    {
        txtField.frame = CGRectMake(20.0, 30.0, 245.0, 25.0);
    }

    [txtField becomeFirstResponder];
    [txtField setBackgroundColor:[UIColor whiteColor]];
    [dialog addSubview:txtField];
    [dialog show];   
}

Some other .m file (implements UIAlertViewDelegate)

 self->txtChangeName = [[UITextField alloc] init];
 [GenericAlertDialogs displayInputDialog:@"Some title...:" 
                                delegate:self 
                               textFiled:txtChangeName];

The UIAlertViewDelegate protocol handling:

- (void) alertView:(UIAlertView *)alert clickedButtonAtIndex:(NSInteger)buttonIndex 
{
    if(buttonIndex == 1)
    {
        if([txtChangeName.text length] > 0)
        {
            self->userInput = [txtChangeName text];
         }
     }
     self->txtChangeName = nil;
}

iOS 4+ compliant.

Answer 5

This is actually only 1 more line to the regular UIAlertView code. Hope this helps!

    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"test" message:@"This is a alert with a textfield" delegate:self cancelButtonTitle:@"YAY" otherButtonTitles:nil];
    alert.alertViewStyle = UIAlertViewStylePlainTextInput;
    [alert show];
    [alert release];

only runs on iOS 5 or later

Answer 6

Check out this implementation: https://github.com/josecastillo/EGOTextFieldAlertView