IOS 코드 노트 좌우 슬라이딩 효과

 - (void)viewDidLoad
{
  [super viewDidLoad];
  // Do any additional setup after loading the view.
  
  self.title=@"    （ ）  ";
  
  //    
  UISwipeGestureRecognizer *recognizerLeft;
  recognizerLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFromLeft:)];
  [recognizerLeft setDirection:(UISwipeGestureRecognizerDirectionLeft)];
  [self.view addGestureRecognizer:recognizerLeft];
  
  //    
  UISwipeGestureRecognizer *recognizerRight;
  recognizerRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFromRight:)];
  [recognizerRight setDirection:(UISwipeGestureRecognizerDirectionRight)];
  [self.view addGestureRecognizer:recognizerRight];

}
#pragma -mark -    
//    
-(void)handleSwipeFromLeft:(UISwipeGestureRecognizer *)recognizer {
  
  NSLog(@"-------          -------------");
  if (recognizer.direction==UISwipeGestureRecognizerDirectionLeft) {
    
    UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"  " message:@"          " delegate:self cancelButtonTitle:@"  " otherButtonTitles:@"  ", nil];
    [alert show];
    
    
  }
}
//    
-(void)handleSwipeFromRight:(UISwipeGestureRecognizer *)recognizer {
  
  NSLog(@"-------          -------------");
  if (recognizer.direction==UISwipeGestureRecognizerDirectionRight) {
    
    UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"  " message:@"          " delegate:self cancelButtonTitle:@"  " otherButtonTitles:@"  ", nil];
    [alert show];
    
  }
}