popViewController when textFieldShouldReturn is called?

Question

I've got a simple UIViewController with a UINavigationController. All that the view controller contains is a single UITextField. This view has two purposes:

Create a new item. In this case, there are "Cancel" and "Save" buttons in the UINavigationController.
Edit the name of an existing item. In this case, there's just the "Back" button in the top-left corner.

What I'd like is for the Return key on the iPhone keyboard to dismiss the UITextField.

Here's my textFieldShouldReturn code:

-(BOOL)textFieldShouldReturn:(UITextField *)textField {
    if(self.navigationItem.rightBarButtonItem) {
        //If we're creating a new item (there'd be a Save button in the top right)   
        [self saveItem]; //This method just saves the Core Data for this item.
        [self.delegate addItemViewController:self didAddItem:item]; //This works fine; this method just tells the delegate to dismiss this view controller. 
    }else {
        //If there's no button in the top-right corner, then we're editing an existing fridge.
        [self saveItem]; //This method just saves the Core Data for this item.
        [self.navigationController popViewControllerAnimated:YES]; //This is what doesn't work.
    }
    [textField resignFirstResponder];
    return YES;
}

try like this[textField resignFirstResponder]; [self.navigationController popViewControllerAnimated:YES]; — Srinivas
@iApple they are UIBarButtonItems, and that part of the code is working just fine. The if-statement is working great. — bryanjclark
Did you hook up your UITextField's delegate to your file owner? Also, are you sure your UINavigationController is hooked up correctly? You may also want to try calling [textField resignFirstResponder]; before the if, and putting an NSTimer on your popViewControllerAnimated call, just to make sure the UITextField has enough time to resign. — msgambel

alloc_iNit alloc_iNit · Accepted Answer · 2011-09-23T06:17:43

Well, I suggest you to go with UIButtons as the operation is being depended and you want to manage it at your end.

    btnSave = [UIButton buttonWithType:UIButtonTypeCustom];
    btnSave.frame = CGRectMake(250, 6, 61, 30);
    [btnSave setImage:[UIImage imageNamed:@"btn-save.png"] forState:UIControlStateNormal];
    btnSave.backgroundColor = [UIColor clearColor]; 
    [btnSave addTarget:self action:@selector(btnSave_clicked:) forControlEvents:UIControlEventTouchUpInside];   
    [self.navigationController.navigationBar addSubview:btnSave];

    - (IBAction)btnSave_clicked:(id)sender
    {
        //If we're creating a new item (there'd be a Save button in the top right)   
        [self saveItem]; //This method just saves the Core Data for this item.
        [self.delegate addItemViewController:self didAddItem:item]; //This works fine; this method just tells the delegate to dismiss this view controller. 
    }

popViewController when textFieldShouldReturn is called?

1 Answers