[IOS / Object-C] - UITextField 터치시 키보드 늦게 올라올때 대처법 / Keyboard slow

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

UITextField *slowFieldSpeed = [[UITextField alloc] init];

  [self.window addSubview:slowFieldSpeed];

  [slowFieldSpeed becomeFirstResponder];

  [slowFieldSpeed resignFirstResponder];

  [slowFieldSpeed removeFromSuperview];

}

넣어주면 다음부터 나오는 view의 키보드 속도가 delay 없이 올라옴