Question

I have just started developing for iPhone (I’ve been an Android developer for quite some time) and am having a problem with a very very…mundanely simple task: changing the text of a text label. I followed the Apple developer tutorial, but there is a problem with the initWithFormat method of NSString.

The issue is in this method:

-(IBAction)changeGreeting:(id)sender {

    self.userName = self.textField.text;

    NSString *nameString = self.userName;
    if ([nameString length] == 0) {
        nameString = @"World";
    }

    NSString *greeting = [[NSString alloc] initWithFormat:@"Hello, %@!", nameString];
    self.label.text = greeting;
}

When I run the project, whether there is a value in textField or not, the label is always set to Hello,…

When I change the last line of the method to:

self.label.text = self.userName;

or to:

self.label.text = nameString;

The label displays the value that SHOULD be inserted at the %@ in the initWithFormat call. Note: I have also tried using stringWithFormat and I get the same problem.

Thanks.

Answer 1

Your label is too narrow. Assuming that it’s in IB, open IB and make the label wider.