iOS 6 - HTML encoded entities are not showing - html

Question

I am trying to show following HTML encoded form of string in UI.
ひょ䥜 姌祦橯ね褎 れずしゅぎゅ穃 ぢょ簨ゝじ氯 苯䛣蟤 覵だ盨ꤎ拣 夯ぢゃ焯埥榥 楎べ楚 坩づ, 覌びょ は䦞びぢじょ 氧へヴェ栤儦 ぢゅ大廩 ぷ諥 礊䛨にょ 襦綦卣楌䨵 が椧りゅ樃驌 蟥ゞ睥盥䨣 騌捯 驩ぎょちゅ レ゜㩟カグォ階 猪仯壪黨ザ れずしゅぎゅ穃, お䤂 ぴゅにゅ䧣鏨以 コざちゃ㠤ジョ 苨䰯お
Using this library, I wrote following code
#import "NSString+HTML.h"
NSLog(#"%#",plainText);
NSLog(#"%#",[plainText stringByDecodingHTMLEntities]);
On executing code, I am getting following exception:
-[__NSCFString stringByDecodingHTMLEntities]: unrecognized selector sent to instance 0x7bd4200
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason:
'-[__NSCFString stringByDecodingHTMLEntities]: unrecognized selector sent to instance 0x7bd4200'
*** First throw call stack:
(0x1caa012 0x10e7e7e 0x1d354bd 0x1c99bbc 0x1c9994e 0xa72d 0x4a0e53f 0x4a20014 0x4a107d5 0x1c50af5 0x1c4ff44 0x1c4fe1b 0x1c047e3 0x1c04668 0x2bffc 0x237d 0x22a5 0x1)
libc++abi.dylib: terminate called throwing an exception
Note: I also tested my HTML encoded string on this link and found no errors in my string format.

Answer 1

#import "NSString+HTML.h"
NSLog(#"%#",plainText);
NSLog(#"%#",[plainText stringByDecodingHTMLEntities]);
You need add NSString+HTML.h, NSString+HTML.m, GTMNSString+HTML.h, GTMNSString+HTML.m file to your project
add -fno-objc-arc
Build Phases -> Compile Sources -> select GTMNSString+HTML.m -> double click right Compiler flags and add -fno-objc-arc

Answer 2

Things were perfectly fine. All I needed was just to add compile source flag -fno-objc-arc by double clicking NSString+HTML.m and GTMNSString+HTML.m under Compile Source tab.
Just imported NSString+HTML.m and no need to import other class
Drag and drop NSString+HTML.m and GTMNSString+HTML.m in Compile Source tab first before adding flag.