ios - Swift 3.0 将数据转换为数组

Question

如何将数据转换为 UInt8 数组？

func serialPort(_ serialPort: ORSSerialPort, didReceive data: Data) {
print("recieved:\(data)")
let arr: [UInt8] = Data(???)???
}

收到的日志：70 字节

Answer 1

在 Swift 3 中，Data作为 a Collectionof工作UInt8，所以你可以简单地使用Array.init.

var received: [UInt8] = []

func serialPort(_ serialPort: ORSSerialPort, didReceive data: Data) {
    print("received:\(data))")
    received = Array(data)
}

---

但是，（Array.init或Array.append(contentsOf:)）复制.DataData

Answer 2

知道了！

var recived = [UInt8]()

func serialPort(_ serialPort: ORSSerialPort, didReceive data: Data) {
        recived.removeAll()
        print("recieved:\(data))")
        recived.append(contentsOf: data)
}

Answer 3

使用withUnsafeBytes：

let data = "ABCD".data(using: .ascii)!
data.withUnsafeBytes {  (pointer: UnsafePointer<UInt8>) in
    //Prints 67 which is the ASCII value of 'C'
    print(pointer[2])
}