Question

So i was reading the description about UITextView’s and it says that it automatically hides the keyboard when you press the ‘Return’ button on the keyboard. But it wasn’t working, so I tried creating an

- (IBAction)textViewReturn:(id)sender; 
{
   [myTextView resignFirstResponder];
}

That did not work either so i tried also doing:

- (BOOL)textViewShouldReturn:(UITextView *)textView
{
  [myTextView resignFirstResponder];
  return NO;
} 

Not sure why the whole deal isn’t working in the first place. Wondering if anyone could help?

Answer 1

I don’t see anything in the UITextView Class Reference that says it automatically hides the keyboard when you press Return.

Also, there is no textViewShouldReturn: message in the UITextViewDelegate protocol. There is a textFieldShouldReturn: message in the UITextFieldDelegate protocol, but a text view is not a text field.

If you want it to hide the keyboard when the user presses Return, you need to do two things.

First, you need to connect some object – usually your view controller – to the text view’s delegate outlet. You can do that in your nib, or you can do it in code, perhaps in your viewDidLoad method:

- (void)viewDidLoad {
    [super viewDidLoad];
    myTextView.delegate = self;
}

Second, you need to implement the textView:shouldChangeTextInRange:replacementText: in your delegate object:

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text {
    if ([text isEqualToString:@"\n"]) {
        [textView resignFirstResponder];
        return NO;
    } else {
        return YES;
    }
}

Note that if the user pastes in text containing a newline and other characters, this will not catch the newline. It will only notice when the user either taps the Return key, or when he pastes in text containing just a newline.

You can declare the delegate’s class as conforming to the UITextViewDelegate protocol, in which case Xcode will helpfully autocomplete the method name. But it will work even if the class doesn’t conform to the protocol.