Question

I have followed the first steps tutorial from apple, and I have a working app that can read text and display it in a label on button click. When I hit enter the textfield is resigned and the keyboard disappears, and when I hit the button the changeGreeting method is invoked. I want to call the changeGreeting function in the function thats used when I hit enter which is textFieldShouldReturn.

I tried everything I could think of, and read a lot online but Im not sure how to deal with (id)sender as a param for example. How should I edit my code to call changeGreeting on textfield enter?

code below:

- (IBAction)changeGreeting:(id)sender {

    self.userName = self.textField.text;

    NSString *nameString = self.userName;
    NSString *endString = @"burp";
    int r = arc4random() % 74;

    if ([nameString length] == 0) {
        nameString = @"World";
    }
    NSString *greeting = [[NSString alloc] initWithFormat:@"Hello, %@, %@! Random String of numbers: %d", nameString, endString, r];
    self.label.text = greeting;
}

    - (BOOL)textFieldShouldReturn:(UITextField *)theTextField {
    if (theTextField == self.textField) {
        [theTextField resignFirstResponder];
        // on enter the keyboard is removed, but I want the
        // changeGreeting method involed too, something like
        // [self changeGreeting]



    }
    return YES;
}

thanks in adv

Answer 1

You already have it. Just ignore the sender parameter:

- (BOOL)textFieldShouldReturn:(UITextField *)theTextField {
    if (theTextField == self.textField) {
        [theTextField resignFirstResponder];
        // on enter the keyboard is removed, but I want the
        // changeGreeting method involed too, something like
        [self changeGreeting:nil]
}