UITextField rightView mode

gistfile1.txt

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 30, 30)];
    view.backgroundColor = [UIColor redColor];
    self.textField.rightView = view;
    self.textField.rightViewMode = UITextFieldViewModeUnlessEditing;
}