1. UISwipeGestureRecognizer（轻扫）基本介绍
- 父类是UIGestureRecognizer
- 默认轻扫方向是向右轻扫
2. UISwipeGestureRecognizer应用举例
// 轻扫
- (void)setUpSwipe
{
// 轻扫
// 一个手势只能支持一个方向
UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)];
// 轻扫方向:默认是右边
swipe.direction = UISwipeGestureRecognizerDirectionUp;
[self.imageView addGestureRecognizer:swipe];
UISwipeGestureRecognizer *swipeD = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)];
// 轻扫方向:下边
swipeD.direction = UISwipeGestureRecognizerDirectionDown;
[self.imageView addGestureRecognizer:swipeD];
}
- (void)swipe:(UISwipeGestureRecognizer *)swipe
{
if (swipe.direction == UISwipeGestureRecognizerDirectionDown) {
NSLog(@"下");
}else{
}
}
3. UISwipeGestureRecognizer属性
// 要求的轻扫手指数量，默认是1
@property(nonatomic) NSUInteger numberOfTouchesRequired __TVOS_PROHIBITED;
// 轻扫方向，默认是向右
@property(nonatomic) UISwipeGestureRecognizerDirection direction;
