Cannot encode the data in ios -

cannot encode data in ios fetch webservice.

- (nsdata*)encodedictionary:(nsdictionary*)dictionary {     nsmutablearray *parts = [[nsmutablearray alloc] init];     (nsstring *key in dictionary) {         nsstring *encodedvalue = [[nsstring stringwithformat:@"%@",[dictionary objectforkey:key]] stringbyaddingpercentescapesusingencoding:nsutf8stringencoding];         nsstring *encodedkey = [[nsstring stringwithformat:@"%@",key] stringbyaddingpercentescapesusingencoding:nsutf8stringencoding];         nsstring *part = [nsstring stringwithformat: @"%@=%@", encodedkey, encodedvalue];         [parts addobject:part];     }     nsstring *encodeddictionary = [parts componentsjoinedbystring:@"&"];     return [encodeddictionary datausingencoding:nsutf8stringencoding]; } 

it seems encoding nsdictionary , generate nsstring. , again encoding nsstring , returns it.

you may in easy way below.

nserror *error;  nsdata *jsondata = [nsjsonserialization datawithjsonobject:dictionaryorarraytooutput                      options:nsjsonwritingprettyprinted                      error:&error];  if (! jsondata) {     nslog(@"got error: %@", error); } else {     nsstring *jsonstring = [[nsstring alloc] initwithdata:jsondata encoding:nsutf8stringencoding]; } 

you may return above jsondata in function achieve requirement below.

- (nsdata*)encodedictionary:(nsdictionary*)dictionary {     nserror *error;      nsdata *jsondata = [nsjsonserialization datawithjsonobject:dictionary                      options:nsjsonwritingprettyprinted                      error:&error];     if (! jsondata) {       nslog(@"got error: %@", error);     } else {       return jsondata;   }  }