使用 PropertyListSerialization 在 swift 中创建字典 2

Question

我正在尝试在 swift 2 中使用 PropertyListSerialization 制作字典。但它不断出现此错误：

"can not convert value of type 'Int' to expected argument type 'NSPropertyListReadOptions'

我的代码行是：

 NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.mainQueue()) {response,data,error in
          if data != nil {
            let datasourceDictionary = try! NSPropertyListSerialization.propertyListWithData(data! ,options:Int(NSPropertyListMutabilityOptions.Immutable.rawValue), format: nil)

还有这个：

let datasourceDictionary = try! NSPropertyListSerialization.propertyListWithData(data! ,options:Int(NSPropertyListMutabilityOptions.Immutable.rawValue), format: nil)

然后我必须遍历字典：

for(key, value): (AnyObject, AnyObject) in datasourceDictionary {
          let name = key as? String
          let url = NSURL(string:value as? String ?? "")
          if name != nil && url != nil {
            let photoRecord = PhotoRecord(name:name!, url:url!)
            self.photos.append(photoRecord)
          }
        }

Answer 1

您不需要将其更改为 Int:

 NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.mainQueue()) {response,data,error in
          if data != nil {
            let datasourceDictionary = try! NSPropertyListSerialization
                                            .propertyListWithData(data!,
                                                options:NSPropertyListMutabilityOptions.Immutable, 
                                                format: nil)

还有这个：

let datasourceDictionary = try! NSPropertyListSerialization
                                            .propertyListWithData(data! ,
                                                options:NSPropertyListMutabilityOptions.Immutable,
                                                format: nil)

Answer 2

您应该解包您的数据对象，而不是根据 nil 检查它。你还需要实现 do try catch 错误处理而不是强制它：

if let data = data {
    do {
        let datasourceDictionary = try NSPropertyListSerialization.propertyListWithData(data, options: .MutableContainersAndLeaves, format: nil)
        print(datasourceDictionary)
    } catch let error as NSError {
        print(error.code, error.domain)
    }
}

使用 PropertyListSerialization 在 swift 中创建字典 2

Use PropertyListSerialization to Make a Dictionary in swift 2

ios

swift

swift2