// init with pre-defined style
    LRTextField *textFieldEmail = [[LRTextField alloc] initWithFrame:CGRectMake(20, 70, 260, 30) labelHeight:15 style:LRTextFieldStyleEmail]; 
    [self.view addSubview:textFieldEmail];

    LRTextField *textFieldPhone = [[LRTextField alloc] initWithFrame:CGRectMake(20, 150, 260, 30) labelHeight:15];
    textFieldPhone.placeholder = @"Phone";
    textFieldPhone.hintText = @"(Optional)";
    textFieldPhone.format = @"(###)###-####"; // set format for segment input string
    textFieldPhone.keyboardType = UIKeyboardTypePhonePad;
    [self.view addSubview:textFieldPhone];

    LRTextField *textFieldValidation = [[LRTextField alloc] initWithFrame:CGRectMake(20, 240, 260, 30) labelHeight:15];
    textFieldValidation.placeholder = @"Validation Demo";
    textFieldValidation.hintText = @"Enter \"abc\"";
    [textFieldValidation setValidationBlock:^NSDictionary *(LRTextField *textField, NSString *text) {
        [NSThread sleepForTimeInterval:1.0];
        if ([text isEqualToString:@"abc"]) {
            return @{ VALIDATION_INDICATOR_YES : @"Correct" };
        }
        return @{ VALIDATION_INDICATOR_NO : @"Error" };
    }];
    [self.view addSubview:textFieldValidation];

    LRTextField *textFieldCustom = [[LRTextField alloc] initWithFrame:CGRectMake(20, 320, 260, 30) labelHeight:15];
    textFieldCustom.placeholder = @"Placeholder";
    textFieldCustom.placeholderActiveColor = [UIColor redColor];
    textFieldCustom.placeholderInactiveColor = [UIColor blackColor];
    textFieldCustom.hintText = @"Purple hint";
    textFieldCustom.hintTextColor = [UIColor purpleColor];
    [self.view addSubview:textFieldCustom];

    textFieldCustom.enableAnimation = NO;