NSData to [Uint8] in Swift

Question

I couldn\'t find a solution to this problem in Swift (all of them are Objective-C, and they deal with pointers which I don\'t think exist in Swift in the same form). Is ther

Answer 1

You can use the getBytes function of NSData to get the byte array equivalent.

As you did not provide any source code, I will use a Swift String contents that has been converted to NSData.

var string = "Hello World"
let data : NSData! = string.dataUsingEncoding(NSUTF8StringEncoding)

let count = data.length / sizeof(UInt8)

// create an array of Uint8
var array = [UInt8](count: count, repeatedValue: 0)

// copy bytes into array
data.getBytes(&array, length:count * sizeof(UInt8))

println(array)

Swift 3/4

let count = data.length / MemoryLayout.size

// create an array of Uint8
var byteArray = [UInt8](repeating: 0, count: count)
// copy bytes into array
data.getBytes(&byteArray, length:count)