需要帮助在Swift 3中声明plist信息检索的数组

Question

由于刚从Swift 2过渡到Swift 3时发生的更改，我无法找到解决我在Xcode上的代码问题的解决方案。

func addBuildingPins(){ 
    let filePath = Bundle.main.path(forResource: "CurtinBuildingList", ofType: "plist") 
    let buildings = NSMutableArray(contentsOfFile: (filePath)!) /*check plist file to see if it is a dictionary or array or else for loop cannot run*/ 
    for building in buildings!{ 
     let point = CGPointFromString(building["coordinate"] as! String) 
     let coordinate = CLLocationCoordinate2DMake(CLLocationDegrees(point.x), CLLocationDegrees(point.y)) 
     let title = building["title"] as! String 
     let typeRawValue = Int(building["type"] as! String)! 
     let type = BuildingType(rawValue: typeRawValue) 
     let subtitle = building["subtitle"] as! String 
     let annotation = BuildingAnnotation(coordinate: coordinate, title: title, subtitle: subtitle, type: type!) 
     mapView.addAnnotation(annotation) 
     print(building) 
    } 
} 

该错误在方括号（building []）之前。我不断收到错误是

类型“NSFastEnumerationIterator.Element”（又名有的话）没有下成员”。

有没有解决这个办法吗？

Answer 1

转换你的建筑阵列到[[String: Any]]使用循环之前。

if let array = buildings as? [[String: Any]] { 
    for building in array { 
      //Your code 
    } 
}