iphone - Getting substring from response NSString -

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मुझे सबस्ट्रिंग CODE के मान ( X2.31 ) स्ट्रिंग से 

  NSString * str = @ "SHMU = \" \ "कोड = \" X2.31 \ "XTN = \";   
 मैं यह विशेष रूप से कैसे प्राप्त कर सकता हूं?   
 
 
 NSString * str = @ "SHMU = \" \ "कोड = \" X2.31 \ "XTN = \" "; एनएसआरेंज श्रेणी = [स्ट्रेंज ओफ़स्ट्रिंग: @" कोड = "NSSrring * str1 = [substring componentsSeparatedByString: @" "] NSLog (@" उप% @ ", [[ Str1 objectAtIndex: 0] stringByTrimmingCharactersInSet [NSCharacterSet whitespaceCharacterSet]]);   
 और स्ट्रिंग द्वारा "X2.31"

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