Question

I’d like to have textfield with constant text in it non-editable like:

ENTER YOUR NAME: 

And clicking at textfield would get cursor right after :

The user should not be able to delete or edit "ENTER YOUR NAME:" also.

How can I implement this?

Answer 1

Set the delegate of your text field to an instance of UITextFieldDelegate implementation, and use the textField:shouldChangeCharactersInRange:replacementString: method to see if the user is attempting to change the ENTER YOUR NAME: string:

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
    // "ENTER YOUR NAME:" occupies the first 16 characters; if the user us trying
    // to change something that is within that 16-character range, say "NO"
    if (range.location < 16) return NO;
    ... check additional conditions here
    return YES;
}

I don’t think there is a way to place the cursor directly, but you can make an empty selection after the trailing colon of the initial text as described in this answer.