迅速跑环“NSFastEnumerationIterator.Element”（又名“任意”）是无法转换为“的UIView”

Question

var _buttons : NSMutableArray = [] 
override func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool { 


    let location : CGPoint = gestureRecognizer.location(in: self) 
    for subviews : UIView in _buttons { 
     if subviews.frame.contains(location) { 
      return false 
     } 
    } 

    return true 
} 

我这样做，但它有一个错误'NSFastEnumerationIterator.Element' (aka 'Any') is not convertible to 'UIView'

我试图取代for subviews : UIView in _buttons到for subviews : UIView in _buttons as [AnyObject]但不起作用。

我该如何继续？

Answer 1

您需要声明您的收藏像var buttons: [UIView]，以确保它仅包含UIView小号