Uppercase characters in UItextfield

Question

I have a question about iOS UIKeyboard.

I have a UITextField and I would to have the keyboard with only uppercase characters.<

Answer 1

The simplest way would be to implement the editing changed method of the text field and set the textfield's text value to upper case representation of the entered text.

@property (nonatomic, strong) IBOutlet UITextField *yourTextfield

// add target in code or use interface builder
[self.yourTextField addTarget:self 
                       action:@selector(uppercaseTextField)
             forControlEvents:UIControlEventEditingChanged];

- (IBAction)uppercaseTextField:(UITextField*)textField
{
    textField.text = [textField.text uppercaseString];
}