NSData가 UTF8로 인코딩 되어 있지 않아 NSString에서 한글을 볼 수 없을 때.

서버 등에서 받은 NSData가 NSUTF8StringEncoding나 NSASCIIStringEncoding 인코딩으로 NSString을 생성해도 한글이 제대로 보이지 않을 때는 0×80000840 으로 인코딩 하면 된다.

1	NSString* aString = [[[NSString alloc] initWithData:receivedData encoding:0x80000422] autorelease];

아래 표가 NSString.h에서 정의하고 있는 encoding인데

01

enum {

02	NSASCIIStringEncoding = 1,        /* 0..127 only */

03	NSNEXTSTEPStringEncoding = 2,

04	NSJapaneseEUCStringEncoding = 3,

05	NSUTF8StringEncoding = 4,

06	NSISOLatin1StringEncoding = 5,

07	NSSymbolStringEncoding = 6,

08	NSNonLossyASCIIStringEncoding = 7,

09	NSShiftJISStringEncoding = 8,          /* kCFStringEncodingDOSJapanese */

10	NSISOLatin2StringEncoding = 9,

11	NSUnicodeStringEncoding = 10,

12	NSWindowsCP1251StringEncoding = 11,    /* Cyrillic; same as AdobeStandardCyrillic */

13	NSWindowsCP1252StringEncoding = 12,    /* WinLatin1 */

14	NSWindowsCP1253StringEncoding = 13,    /* Greek */

15	NSWindowsCP1254StringEncoding = 14,    /* Turkish */

16	NSWindowsCP1250StringEncoding = 15,    /* WinLatin2 */

17	NSISO2022JPStringEncoding = 21,        /* ISO 2022 Japanese encoding for e-mail */

18	NSMacOSRomanStringEncoding = 30,

19

20	NSUTF16StringEncoding = NSUnicodeStringEncoding,      /* An alias for NSUnicodeStringEncoding */

21

22	#if MAC_OS_X_VERSION_10_4 <= MAC_OS_X_VERSION_MAX_ALLOWED || __IPHONE_2_0 <= __IPHONE_OS_VERSION_MAX_ALLOWED

23	NSUTF16BigEndianStringEncoding = 0x90000100,          /* NSUTF16StringEncoding encoding with explicit endianness specified */

24	NSUTF16LittleEndianStringEncoding = 0x94000100,       /* NSUTF16StringEncoding encoding with explicit endianness specified */

25

26	NSUTF32StringEncoding = 0x8c000100,

27	NSUTF32BigEndianStringEncoding = 0x98000100,          /* NSUTF32StringEncoding encoding with explicit endianness specified */

28	NSUTF32LittleEndianStringEncoding = 0x9c000100        /* NSUTF32StringEncoding encoding with explicit endianness specified */

29

#endif

30

};

한글은 아래 표에 나와있다.

* NSString *

Western (Mac OS Roman)	0x1e
Japanese (Mac OS)	0×80000001
Traditional Chinese (Mac OS)	0×80000002
Korean (Mac OS)	0×80000003
Arabic (Mac OS)	0×80000004
Hebrew (Mac OS)	0×80000005
Greek (Mac OS)	0×80000006
Cyrillic (Mac OS)	0×80000007
Devanagari (Mac OS)	0×80000009
Gurmukhi (Mac OS)	0x8000000a
Gujarati (Mac OS)	0x8000000b
Thai (Mac OS)	0×80000015
Simplified Chinese (Mac OS)	0×80000019
Tibetan (Mac OS)	0x8000001a
Central European (Mac OS)	0x8000001d
Symbol (Mac OS)	0×6
Dingbats (Mac OS)	0×80000022
Turkish (Mac OS)	0×80000023
Croatian (Mac OS)	0×80000024
Icelandic (Mac OS)	0×80000025
Romanian (Mac OS)	0×80000026
Keyboard Symbols (Mac OS)	0×80000029
Farsi (Mac OS)	0x8000008c
Cyrillic (Mac OS Ukrainian)	0×80000098
Western (Mac VT100)	0x800000fc
Unicode™ (UTF-16)	0xa
Unicode™ (UTF-8)	0×4
Western (ISO Latin 1)	0×5
Central European (ISO Latin 2)	0×9
Western (ISO Latin 3)	0×80000203
Central European (ISO Latin 4)	0×80000204
Cyrillic (ISO 8859-5)	0×80000205
Arabic (ISO 8859-6)	0×80000206
Greek (ISO 8859-7)	0×80000207
Hebrew (ISO 8859-8)	0×80000208
Turkish (ISO Latin 5)	0×80000209
Nordic (ISO Latin 6)	0x8000020a
Thai (ISO 8859-11)	0x8000020b
Baltic Rim (ISO Latin 7)	0x8000020d
Celtic (ISO Latin	0x8000020e
Western (ISO Latin 9)	0x8000020f
Latin-US (DOS)	0×80000400
Greek (DOS)	0×80000405
Baltic Rim (DOS)	0×80000406
Western (DOS Latin 1)	0×80000410
Central European (DOS Latin 2)	0×80000412
Turkish (DOS)	0×80000414
Icelandic (DOS)	0×80000416
Arabic (DOS)	0×80000419
Cyrillic (DOS)	0x8000041b
Thai (Windows, DOS)	0x8000041d
Japanese (Windows, DOS)	0×8
Simplified Chinese (Windows, DOS)	0×80000421
Korean (Windows, DOS)	0×80000422
Traditional Chinese (Windows, DOS)	0×80000423
Western (Windows Latin 1)	0xc
Central European (Windows Latin 2)	0xf
Cyrillic (Windows)	0xb
Greek (Windows)	0xd
Turkish (Windows Latin 5)	0xe
Hebrew (Windows)	0×80000505
Arabic (Windows)	0×80000506
Baltic Rim (Windows)	0×80000507
Vietnamese (Windows)	0×80000508
Western (ASCII)	0×1
Japanese (Shift JIS X0213)	0×80000628
Chinese (GBK)	0×80000631
Chinese (GB 18030)	0×80000632
Japanese (ISO 2022-JP)	0×15
Korean (ISO 2022-KR)	0×80000840
Japanese (EUC)	0×3
Simplified Chinese (EUC)	0×80000930
Traditional Chinese (EUC)	0×80000931
Korean (EUC)	0×80000940
Japanese (Shift JIS)	0x80000a01
Cyrillic (KOI8-R)	0x80000a02
Traditional Chinese (Big 5)	0x80000a03
Western (Mac Mail)	0x80000a04
Traditional Chinese (Big 5 HKSCS)	0x80000a06
Western (NextStep)	0×2
Non-lossy ASCII	0×7
Western (EBCDIC US)	0x80000c02

Ref: NSString의 인코딩

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