iOS開發中手勢識別有六種：

輕擊手勢（TapGestureRecognizer）,

輕掃手勢 （SwipeGestureRecognizer）,

長按手勢（LongPressGestureRecognizer）,

拖動手勢（PanGestureRecognizer）,

捏合手勢（PinchGestureRecognizer）,

旋轉手勢（RotationGestureRecognizer）,

1，輕擊手勢（TapGestureRecognizer）

UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGesture:)];
tapGesture.numberOfTapsRequired = 1; //點擊次數
tapGesture.numberOfTouchesRequired = 1; //點擊手指數
[self.view addGestureRecognizer:tapGesture];

//輕擊手勢觸發方法
-(void)tapGesture:(UITapGestureRecognizer *)sender
{
    //your code
}

2，長按手勢（LongPressGestureRecognizer）

UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressGesture:)];
//設置長按時間
longPressGesture.minimumPressDuration = 0.5;
[self.view addGestureRecognizer:longPressGesture];

//長按手勢觸發方法
-(void)longPressGesture:(id)sender
{
    UILongPressGestureRecognizer *longPress = sender;
    if (longPress.state == UIGestureRecognizerStateBegan)
    {
       //your code
    }
}

說明：長按手勢的常用狀態如下

開始：UIGestureRecognizerStateBegan

改變：UIGestureRecognizerStateChanged

結束：UIGestureRecognizerStateEnded

取消：UIGestureRecognizerStateCancelled

失敗：UIGestureRecognizerStateFailed

3，輕掃手勢（SwipeGestureRecognizer）

UISwipeGestureRecognizer *swipeGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGesture:)];
//設置輕掃的方向
swipeGesture.direction = UISwipeGestureRecognizerDirectionRight; //向右
[self.view addGestureRecognizer:swipeGesture];

UISwipeGestureRecognizer *swipeGestureLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGesture:)];
//設置輕掃的方向
swipeGestureLeft.direction = UISwipeGestureRecognizerDirectionLeft; //向左
[self.view addGestureRecognizer:swipeGestureLeft];

//輕掃手勢觸發方法
-(void)swipeGesture:(id)sender
{

    UISwipeGestureRecognizer *swipe = sender;

    if (swipe.direction == UISwipeGestureRecognizerDirectionLeft)
    {
        //向左輕掃
    }

    if (swipe.direction == UISwipeGestureRecognizerDirectionRight)
    {
        //向右輕掃
    }
}

4，捏合手勢（PinchGestureRecognizer）

UIPinchGestureRecognizer *pinchGesture = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchGesture:)];
[self.view addGestureRecognizer:pinchGesture];

    ////捏合手勢觸發方法
-(void) pinchGesture:(id)sender
{
    UIPinchGestureRecognizer *gesture = sender;
    //手勢改變時
    if (gesture.state == UIGestureRecognizerStateChanged)
    {
         //捏合手勢中scale屬性記錄的縮放比例
        _imageView.transform = CGAffineTransformMakeScale(gesture.scale, gesture.scale);
    }

    //結束後恢復
    if(gesture.state==UIGestureRecognizerStateEnded)
    {
        [UIView animateWithDuration:0.5 animations:^{
            _imageView.transform = CGAffineTransformIdentity;//取消一切形變
        }];
    }
}

5，拖動手勢（PanGestureRecognizer）

UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panGesture:)];
[self.view addGestureRecognizer:panGesture];

//拖動手勢觸發方法
-(void) panGesture:(id)sender
{
    UIPanGestureRecognizer *panGesture = sender;
    CGPoint movePoint = [panGesture translationInView:self.view];
    //your code
}

6，旋轉手勢（RotationGestureRecognizer）

UIRotationGestureRecognizer *rotationGesture = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotationGesture:)];
[self.view addGestureRecognizer:rotationGesture];

//旋轉手勢觸發方法
-(void)rotationGesture:(id)sender
{
    UIRotationGestureRecognizer *gesture = sender;
    if (gesture.state==UIGestureRecognizerStateChanged)
    {
        _imageView.transform=CGAffineTransformMakeRotation(gesture.rotation);
    }
    if(gesture.state==UIGestureRecognizerStateEnded)
    {
        [UIView animateWithDuration:1 animations:^{
            _imageView.transform=CGAffineTransformIdentity;//取消形變
        }];
    }
}