使用NSString将UTF-8编码转换为ISO 8859-1编码

Question

I have an application that reads the data in UTF-8 format from the server, but it has to be displayed in ISO 8859-1(Latin-1). Are there any Cocoa APIs to achieve this?

Answer 1

You can use NSString 's getCString:maxLength:encoding: method, like this:

char converted[([string length] + 1)];
[string getCString:converted maxLength:([string length] + 1) encoding: NSISOLatin1StringEncoding];

NSLog(@"%s", converted);

Once you have this, you can then re-initialize an NSString instance from that same encoding using the stringWithCString:encoding: class method:

NSString *converted_str = [NSString stringWithCString:converted encoding:NSISOLatin1StringEncoding];

Answer 2

我更喜欢使用dataUsingEncoding:allowLossyConversion:因为它不需要你猜测要分配多少存储空间，并且返回的NSData告诉你需要多少字节。

Answer 3

Jacobs answer didn't really work for my. What did eventually work for me was to only use

[username stringByAddingPercentEscapesUsingEncoding:NSISOLatin1StringEncoding]

Answer 4

use

+ (id)stringWithCString:(const char *)cString encoding:(NSStringEncoding)enc

Example:

latinStringForDisplay = [NSString stringWithCString:yourCstringHere encoding:NSISOLatin1StringEncoding];

That should do it.