iOS轻扫手势（Swipe）

//抽象类
特点 不能创建对象

UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer
alloc]
initWithTarget:self
action:@selector(imageViewroSwipe:)];
swipe.delegate =
self;

//往右或往左轻扫

swipe.direction =
UISwipeGestureRecognizerDirectionUp;//向上

swipe1.direction =
UISwipeGestureRecognizerDirectionDown;//向下

swipe1.numberOfTouchesRequired =
1;

//手势View
对象
添加给UIImageView

[self.imgView
addGestureRecognizer:swipe];

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