xcode 如何将 NSData 转换为 const uint8_t？或在通过 Wifi 传递 NSData 时出错
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How can i convert NSData to const uint8_t?or getting error while passing a NSData over Wifi
提问by Christina
i have a array with two strings:
我有一个包含两个字符串的数组：
NSArray *sendingArray = [[NSArray alloc]initWithObjects:@"CAT",@"DOG",nil];
and i converted the array to NSData:
我将数组转换为 NSData：
NSData *myData = [NSKeyedArchiver archivedDataWithRootObject:sendingArray];
now i need to convert my NSData(myData)to const uint8_t
现在我需要将我的转换NSData(myData)为const uint8_t
i am doing this code to send an array of values through Wifi network.
我正在执行此代码以通过 Wifi 网络发送一组值。
i send successfully a string over wifi using the below code(my string is "string").
我使用以下代码通过 wifi 成功发送了一个字符串（我的字符串是“字符串”）。
const uint8_t *message = (const uint8_t *)[string UTF8String];
[_outStream write:bytes maxLength:len];
i wrote the below code to send NSData object but it got error.
我写了下面的代码来发送 NSData 对象，但它出错了。
code is:
代码是：
const uint8_t *bytes = (uint8_t)[myData bytes];//this line getting error.
[_outStream write:bytes maxLength:len];
can i send my NSData(myData)through the above method without converting it to const uint8_t? if yes,please give me the code that i need to write.
我可以NSData(myData)通过上述方法发送我的而不将其转换为 const uint8_t 吗？如果是，请给我我需要编写的代码。
or can any one tell me the way to convert my NSData(myData)to const uint8_t
或者任何人都可以告诉我如何将我的转换NSData(myData)为const uint8_t
回答by JeremyP
const uint8_t *bytes = (const uint8_t*)[myData bytes];
// ^^ note the asterisk
