ios - swift 从 UInt8 转换为 String

Question

我正在快速将以下 UInt8 数组转换为 String 并且每次都得到 nil。我应该做什么？？请帮助我。

[ 201, 201, 87, 200, 204 ]
let decData = NSData(bytes: mydata, length: Int(mydata.count) )
let result1 = NSString(data: decData, encoding: NSUTF8StringEncoding)

编辑:我正在使用 InflateStream/deflateStream 来压缩我的数据。 deflateStream 的返回类型是 UInt8。我尝试将此值转换为字符串，以便将其发送到服务器。

这是我的代码

    let string = "hello"
    let data: [UInt8] = Array(string.utf8)

    // compress
    var deflater = DeflateStream()
    var (deflated, err) = deflater.write(data, flush: true)
    if err != nil{
        fatalError("\(err!)")
    }
    print(" ***** deflater: \(deflated)")

    // decompress
    var inflater = InflateStream()
    var (inflated, errr) = inflater.write(deflated, flush: true)
    if errr != nil{
        fatalError("\(errr!)")
    }
    print(" ***** inflated: \(inflated)")

Answer 1

给定一个 UInt8 数组:

let letters: [UInt8] = [201, 201, 87, 200, 204]

我们可以从将其映射到 Character 数组开始:

let characters = letters.map { Character(UnicodeScalar($0)) }

然后我们只调用需要[Character]的String构造函数:

let result = String(Array(characters))