swipe.direction的值都是3.

下面是我以前的程式碼：

UISwipeGestureRecognizer *swiperight=[[UISwipeGestureRecognizeralloc]initWithTarget:selfaction:@selector(swichController:)];

//預設是UISwipeGestureRecognizerDirectionRight

        swiperight.direction=UISwipeGestureRecognizerDirectionRight|

UISwipeGestureRecognizerDirectionLeft

        [self.collectionaddGestureRecognizer:swiperight];

他是錯誤的。

正確的用法是，要建立倆個輕拍手勢，分別設定他的方向才可以。

//新增輕掃手勢

UISwipeGestureRecognizer *swipe=[[UISwipeGestureRecognizeralloc]initWithTarget:selfaction:@selector(swichController:)];

//預設是UISwipeGestureRecognizerDirectionRight

        swipe.direction=

        [self.collectionaddGestureRecognizer:swipe];

UISwipeGestureRecognizer *swiperight=[[UISwipeGestureRecognizeralloc]initWithTarget:selfaction:@selector(swichController:)];

//預設是UISwipeGestureRecognizerDirectionRight

        swiperight.direction=UISwipeGestureRecognizerDirectionRight;

        [self.collectionaddGestureRecognizer:swiperight];