如何从 Swift 3 中的数据读取属性列表 [英] How can I read a property list from data in Swift 3

问题描述

我正在尝试从 Swift 3 中的 Data 读取 property list 但我无法实现.

I'm trying to read a property list from Data in Swift 3 but I can't achieve that.

我尝试过这样的事情:

let datasourceDictionary = try! PropertyListSerialization.propertyList(from: data!, options: [PropertyListSerialization.ReadOptions], format: nil) as! Dictionary

我收到了这个错误:

无法将PropertyListSerialization.ReadOptions.Type"(又名PropertyListSerialization.MutabilityOptions.Type")类型的值转换为预期的元素类型PropertyListSerialization.MutabilityOptions"

Cannot convert value of type 'PropertyListSerialization.ReadOptions.Type' (aka 'PropertyListSerialization.MutabilityOptions.Type') to expected element type 'PropertyListSerialization.MutabilityOptions'

然后我尝试了类似我以前在 Swift 1.2 上做的事情:

Then I tried something like this like I used to do on Swift 1.2:

let datasourceDictionary = try! PropertyListSerialization.propertyList(from: data!, options: [PropertyListSerialization.MutabilityOptions.immutable], format: nil) as! Dictionary

我收到了这个错误:

'immutable' 不可用:使用 [] 构造一个空的选项集

'immutable' is unavailable: use [] to construct an empty option set

然后我尝试了这个:

let datasourceDictionary = try! PropertyListSerialization.propertyList(from: data!, options: [], format: nil) as! Dictionary

我收到了这个错误:

'[Any]' 不能转换为 'PropertyListSerialization.ReadOptions'(又名 'PropertyListSerialization.MutabilityOptions')

'[Any]' is not convertible to 'PropertyListSerialization.ReadOptions' (aka 'PropertyListSerialization.MutabilityOptions')

如何从 Swift 3 中的数据"中读取 property list 文件，或者有什么方法可以做到这一点?

How can I read the property list file from `Data in Swift 3 or what is the way to do that?

推荐答案

Dictionary 是一个通用类型，它需要键和值的类型信息.

Dictionary is a generic type which needs type information for the keys and the values.

使用Dictionary或更短的[String:Any]:

let datasourceDictionary = try! PropertyListSerialization.propertyList(from:data!, format: nil) as! [String:Any]

options 参数可以省略.

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