ios - NSString from NSData is nil -


I try to get nssting from NSDT, but I get zero value. This is my code: 

  NSString * dataString = [[NSString alloc] initWithData: self.message.data encoding: NSUTF8StringEncoding];   
 When I login to  self.message.data   
  self-> _message- & gt; _data: & lt; OS_dispatch_data: data [0x17e48290] = {leaf, size = 331233, buf = 0x3aac000} & gt;   
 Does this mean that my data is not zero ?? |  
 Can anyone help?  
 
 
 Answers to your question in comments:  OS_dispatch_data   Send_data_t  which is toll free bridging with NSDT on iOS 7 and Mavericks. You can just put it on  NSData * .  
 Then, in your case, you can write:  
  NSData * datacast = self.message.data; NSString * Data String = [[NSString alloc] initWithData: Datacast encoding: NSUTF8StringEncoding];   
 And now you get the right string!  
 In my case it appeared, when  Air Force Networking  was inserted from internal  NSMutableData  to  NSDTA .  
 And this simple artist helps me. As  @Daij -Nangan  has been mentioned as : if it does not work - then try to check your text encoding Do it. For example, if you are using  NSURLSessionTask :  
  NSURLSessionTask * function; // Your NSURLSessionTask NSString * Encoding = [[Job Response] textEncodingName];   
 In your case ( NSUTF8StringEncoding ) it should be  "utf-8" .

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