在iOS中正确编码ID3标签 [英] Correct encoding for ID3 Tags in iOS

问题描述

我正在尝试从项目中的一堆mp3文件中获取ID3标签。

I'm trying to get ID3 tags from a bunch of mp3 files in my project.

AudioFileGetProperty(audioFile, kAudioFilePropertyInfoDictionary, &size, &metadataDictionary);

如果标签不包含西里尔字符，输出在设备上看起来就OK。但是我有时会得到像这样的价值：

If the tag doesn't contain cyrillic symbols, the output looks OK on the device. However I sometimes get values like this one:

album = "\U00ce\U00f2\U00ea\U00f0\U00fb\U00f2\U00ee\U00e5 \U00d0\U00e0\U00e4\U00e8\U00ee 102.5FM";
"approximate duration in seconds" = "260.623";

，并导致扭曲的符号显示（ http://d.pr/i/X9wG ）。

and it leads to distorted symbols display (http://d.pr/i/X9wG).

有没有办法解码这些符号变成可读形式？我已经尝试过

Is there any way to decode these symbols into a readable form? I've already tried

NSString* value = [metadataDictionary objectForKey: key];
NSData* data = [value dataUsingEncoding: NSASCIIStringEncoding];
NSString* string = [[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];

但结果保持不变。

任何帮助将不胜感激！

[更新]

尝试在此SO答案中提供的解决方案，但还有其他方法？

I tend to try a solution provided in this SO answer, but are there any other ways?

推荐答案

将这些符号解码成可读形式：

That's way to decode these symbols into a readable form:

NSString *value = [metadataDictionary objectForKey:@"artist"];
const char *cString = [value cStringUsingEncoding:NSWindowsCP1252StringEncoding];
NSString *artist = [NSString stringWithCString:cString encoding:NSWindowsCP1251StringEncoding];

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