[objc] 텍스트필드 : 리턴키 누르면 키보드 숨기기, UITextField, returnKey, Keyboard

//동작확인

// xcode 4.6

// ipod touch 5th

.h

//delegate

@interface ViewController : UIViewController <UITextFieldDelegate>

.m

- (void)viewDidLoad

{

    [super viewDidLoad];

    tf.delegate = self;

}

- (BOOL)textFieldShouldReturn:(UITextField *)textField{

    if(textField == tf){

        [textField resignFirstResponder];

    }

    return YES;

}