如何验证文本字段仅显示2种文本

Question

In iOS, whats the best way to validate a textfield to make sure that the text field has a certain text in it?

I have

    TaxiOrCust.text

and I only want the words Customer or Taxi In the text field. the words must have the first letter in Uppercase.

Is there a way to validate this in Xcode?

Answer 1

As mentioned, you REALLY shouldn't be using a textfield if the user is only allowed to enter two very specific things, but rather a picker or something similar. BUT, if that is REALLY what you want to do for some other reason, the following code does just that:

if ([TaxiOrCust.text isEqualToString:@"Customer"]) {
    NSLog(@"User entered 'Customer' with a capital C.");
}
else if ([TaxiOrCust.text isEqualToString:@"Taxi"]) {
    NSLog(@"User entered 'Taxi' with a capital T.");
}
else {
    NSLog(@"The user has entered an incorrect value.");
}