Objective-C - 如何将字节数组转换为NSString？ [英] Objective-C - How can I convert Byte Array to NSString?

问题描述

我试图将一个字节数组转换为 NSString 对象。为了测试的目的，我只是试图打印出字符串的内容到日志。

I am trying to convert a byte array into a NSString object. For testing purposes I am then just trying to print out the contents of the string to the log.

这是我得到的：

UInt8 buf[BUFSIZE];
CFIndex bytesRead = CFReadStreamRead(stream, buf, BUFSIZE);
if (bytesRead > 0) {
NSString  *serverText = [[NSString alloc] initWithBytes:buf
                                                 length:(NSUInteger)BUFSIZE
                                               encoding:NSASCIIStringEncoding];
NSLog("%@",serverText);
[serverText release];

我试图初始化一个新的 NSString 使用 initWithBytes 并将其存储在 serverText 中。我可以在调试器中看到 serverText 的值是无效地址。我对objective-c是新的，但我认为 initWithBytes 工厂方法不成功。

I am trying to initialize a new NSString using initWithBytes and store this in serverText. I can see in the debugger that the value of serverText is "invalid address". I am new to objective-c but I assume that means the initWithBytes factory method was not successful.

包含数据。有人可以帮我吗？

The buffer contains data. Can someone help me out?

谢谢..

推荐答案

我想出了什么：

  NSData *data = [[NSMutableData alloc] init];
            uint8_t buffer[1024];
            unsigned int len = 0;

            len =  [(NSInputStream *)stream read:buffer maxLength:1024];

            if(len > 0)
            {
                [data appendBytes:&buffer length:len];
            }
            NSString *serverText = [[NSString alloc]
                                    initWithData:data
                                    encoding:NSASCIIStringEncoding];

            NSLog(@"%@", serverText);

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