需要帮助在Swift 3中为plist信息检索声明数组

Question

由于从Swift 2到Swift 3的过渡发生了变化，我无法找到Xcode上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)
    }
}

错误就在方括号（building []）之前。我一直得到的错误是

  

输入'NSFastEnumerationIterator.Element'（又名，Any）没有下标成员“。

有什么方法吗？

Answer 1

在使用for循环之前，将buildings数组转换为[[String: Any]]。

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