NSData显示为字符串(NSData to display as a string)

NSData显示为字符串(NSData to display as a string)

这是我的第一篇文章。 我正在构建一个iPhone应用程序，并坚持以下几点：

unsigned char hashedChars[32]; CC_SHA256([inputString UTF8String], [inputString lengthOfBytesUsingEncoding:NSASCIIStringEncoding], hashedChars); NSData *hashedData = [NSData dataWithBytes:hashedChars length:32]; NSLog(@"hashedData = %@", hashedData);

日志显示如下：

hashedData = <abcdefgh abcdefgh abcdefgh abcdefgh abcdefgh abcdefgh abcdefgh abcdefgh> 注意hashedData是NSData，而不是NSString

但是我需要的是将hashedData转换成NSString，如下所示：

NSString *someString = @"abcdefghabcdefghabcdefghabcdefghabcdefghabcdefghabcdefghabcdefgh";

所以基本上，结果需要像hashedData，除了我不想要的角括号和空格之间。

任何帮助深表感谢。

I am building an iPhone app and stuck with the following:

unsigned char hashedChars[32]; CC_SHA256([inputString UTF8String], [inputString lengthOfBytesUsingEncoding:NSASCIIStringEncoding], hashedChars); NSData *hashedData = [NSData dataWithBytes:hashedChars length:32]; NSLog(@"hashedData = %@", hashedData);

The log is showing like:

hashedData = <abcdefgh abcdefgh abcdefgh abcdefgh abcdefgh abcdefgh abcdefgh abcdefgh> note hashedData is NSData, not NSString

But what I need is to convert hashedData into NSString that looks like:

NSString *someString = @"abcdefghabcdefghabcdefghabcdefghabcdefghabcdefghabcdefghabcdefgh";

So basically the result needs to be like hashedData except I don't want the angle brackets and spaces in between.

最满意答案

使用NSString initWithData：encoding：方法。

NSString *someString = [[NSString alloc] initWithData:hashedData encoding:NSASCIIStringEncoding];

（编辑回复你的评论:)

在这种情况下，约书亚的回答确实有帮助：

NSCharacterSet *charsToRemove = [NSCharacterSet characterSetWithCharactersInString:@"< >"]; NSString *someString = [[hashedData description] stringByTrimmingCharactersInSet:charsToRemove];

I have found the solution and I think I was being stupid.

Basically all I had to do is:

NSString *someString = [NSString stringWithFormat:@"%@", hashedData]; //forcing the NSData to become NSString

Once again thank you to all who tried to help, Much appreciated.