Objective c Swift NSData初始化器

我正试图从Obj-C库中实现这个方法

func bleDidReceiveData(data: UnsafeMutablePointer<UInt8>, length: Int32) {
    var d = NSData(bytes: data as [UInt8], length: length)
}

func-bledireceivedata（数据：UnsafeMutablePointer，长度：Int32）{
var d=NSData（字节：UnsafeMutablePointer（数据），长度：Int（长度））
}

或者干脆

让d=NSData（字节：数据，长度：Int（长度））

。

UnsafePointer

参数接受其他指针类型的参数。

NSData *d = [NSData dataWithBytes:data length:length];

func bleDidReceiveData(data: UnsafeMutablePointer<UInt8>, length: Int32) {
    var d = NSData(bytes: UnsafeMutablePointer<Void>(data), length: Int(length))
}