无法滑动图像

Question

我在viewDidLoad方法中使用以下代码。

TextBox

我希望用户来回扫描图像。但是没有调用swipeLeft和swipeRight方法。为什么会这样？

Answer 1

设置委托<UIGestureRecognizerDelegate>并添加以下代码

swipeLeft.delegate = self;
swipeRight.delegate = self; 

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{ 
      return YES; 
}