如何在Objective-C中编码或解码URL

有没有类似的东西

+(NSString *) URLencode: (NSString *) someString


+(NSString *) URLdecode: (NSString *) someString

如果是，该如何实施?

请注意投票者.这不是一个简单的问题.我需要可以全面做到这一点的东西.例如:

Note to downvoters. This is NOT a simple question. I need something that can comprehensively do this. For example:

NSString * test = @"汉字马拉松是";
NSString * encoded = [test stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];
PO(encoded);
PO(test);

将产生以下内容:

2012-06-04 16:04:22.709 BadgerNew[2266:17003] <0xcd890 GrabClass.m:(930)> encoded (null)
2012-06-04 16:04:22.710 BadgerNew[2266:17003] <0xcd890 GrabClass.m:(931)> test 汉字马拉松是

我希望我的编码能够对包括日语在内的所有内容进行URL编码.

I want my encoding to be able to URL encode EVERYTHING including japanese language, etc.

所以我想编码包含％E6％B1％89％E5％AD％97％E9％A9％AC％E6％8B％89％E6％9D％BE％E6％98％AF

So I want encoded to contain something along %E6%B1%89%E5%AD%97%E9%A9%AC%E6%8B%89%E6%9D%BE%E6%98%AF

http://mobiledevelopertips.com/中有2种不同的方法联网/a-better-url-encoding-method.html

没有一个人足够好.

我需要能够对所有字符串进行编码，包括日文/中文字符.

I need to be able to encode ALL strings, including japanese/chinese characters.

更新:我按照H2CO3的答案进行操作: NSString * test = @汉字马拉松是"; NSString *编码= [测试stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; PO(已编码)； PO(测试); PO(已编码)；

Update: I followed H2CO3 answer and do this: NSString * test = @"汉字马拉松是"; NSString * encoded = [test stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; PO(encoded); PO(test); PO(encoded);

按预期工作.