NSData从蓝牙到整数(NSData from bluetooth to integer)

NSData从蓝牙到整数(NSData from bluetooth to integer)

我每隔2秒从蓝牙获取数据，

func device(device: JDevice!, didUpdateData data: NSData!, type typeCode: Int8, error: NSError!) { print(data) }

打印结果是：

<6d000000> <6e000000> <6f000000> <70000000> <71000000> <72000000>

如何将此数据转换为整数或字符串？

编辑 -------------------------

let des = data.description as NSString let dataAsString = des.substringWithRange(NSMakeRange(1, data.description.characters.count-2)) var value = UInt8(0) data.getBytes(&value, range: NSMakeRange(0, dataAsString.characters.count/2)) print(value)

我找到了解决方案，但我不清楚为什么我使用dataAsString.characters.count作为data.getBytes函数中范围的长度。

我也有这个错误：

'NSRangeException', reason: '*** -[_NSInlineData getBytes:range:]: range {0, 8} exceeds data length 4' *** First throw call stack:

这个错误是什么意思？ 谢谢！

I get data from bluetooth every 2 seconds,

func device(device: JDevice!, didUpdateData data: NSData!, type typeCode: Int8, error: NSError!) { print(data) }

The print result is:

<6d000000> <6e000000> <6f000000> <70000000> <71000000> <72000000>

How can I convert this data to an integer or string?

EDIT -------------------------

let des = data.description as NSString let dataAsString = des.substringWithRange(NSMakeRange(1, data.description.characters.count-2)) var value = UInt8(0) data.getBytes(&value, range: NSMakeRange(0, dataAsString.characters.count/2)) print(value)

I found the solution, but I am not very clear on why I use dataAsString.characters.count as the length of the range in the data.getBytes function.

I also got this error:

'NSRangeException', reason: '*** -[_NSInlineData getBytes:range:]: range {0, 8} exceeds data length 4' *** First throw call stack:

What does this error mean? Thanks!

最满意答案

let des = data.description as NSString let dataAsString = des.substringWithRange(NSMakeRange(1, data.description.characters.count-2)) var value = UInt8(0) data.getBytes(&value, range: NSMakeRange(0, dataAsString.characters.count/2)) print(value) let des = data.description as NSString let dataAsString = des.substringWithRange(NSMakeRange(1, data.description.characters.count-2)) var value = UInt8(0) data.getBytes(&value, range: NSMakeRange(0, dataAsString.characters.count/2)) print(value)