ios - Fetch data using Post method in Objective-c -


i fetching data using post method. , have retrieved data.it's taking long display in ui can print on console, code is

nsmutableurlrequest *request = [[nsmutableurlrequest alloc] init]; [request seturl:[nsurl urlwithstring:@"http://www.xxxyyy.com/v1/api/client/authorize"]]; [request sethttpmethod:@"post"]; [request setvalue:@"abcd" forhttpheaderfield:@"authkey"]; [request setvalue:@"application/x-www-form-urlencoded" forhttpheaderfield:@"content-type"];   nsurlsession *session = [nsurlsession sessionwithconfiguration:[nsurlsessionconfiguration defaultsessionconfiguration]];  [[session datataskwithrequest:request completionhandler:^(nsdata *data, nsurlresponse *response, nserror *error)  {     nsstring *requestreply = [[nsstring alloc] initwithdata:data encoding:nsasciistringencoding];      [request setvalue:@"application/json;charset=utf-8" forhttpheaderfield:@"authkey"];      nsdata* data1 = [requestreply datausingencoding:nsutf8stringencoding];     jsonreturnarray = [nsjsonserialization jsonobjectwithdata:data1 options:nsjsonreadingallowfragments error:&error];      nsarray *array = [jsonreturnarray copy];     [self rec:array];      nsstring *phonenumber=[nsstring stringwithformat:@"%@",[jsonreturnarray valueforkey:@"phone"]];     lblphonenumber.text = phonenumber;      nsstring *address=[nsstring stringwithformat:@"%@ %@ %@,ca %@",[jsonreturnarray valueforkey:@"street1"],[jsonreturnarray valueforkey:@"street2"],[jsonreturnarray valueforkey:@"city"],[jsonreturnarray valueforkey:@"postalcode"]];     lbladdress.text=address;//takes long time display     nslog(@"%@",address);//immeaditely print      strlatitude=[jsonreturnarray valueforkey:@"latitude"];     strlongitude=[jsonreturnarray valueforkey:@"longitude"];      [self map:(mkmapview *)maplocation didupdateuserlocation:(mkuserlocation *)nil];//method call }] resume];

this take time print data, if use nsurlconnection class may you.this class method may helpful.

+ (void)postrequestdata:(nsdictionary *)postvars                  action:(apimode)action   withcompletionhandlar:(void (^) (id result, bool status))completionblock {      nsurl *url = [nsurl urlwithstring:api_url([self getapinamefortype:action])];     nslog(@"request url %@",[nsstring stringwithformat:@"%@",url]);     nsstring *contenttype = @"application/json";     nsmutableurlrequest *request = [nsmutableurlrequest requestwithurl:url];     [request sethttpmethod:@"post"];     [request addvalue:contenttype forhttpheaderfield: @"content-type"];     nserror *err = nil;      nsmutabledictionary *params=[[nsmutabledictionary alloc] initwithdictionary:postvars];     //  [params setobject:[self getapinamefortype:action] forkey:@"mode"];     nslog(@"paramater %@",params);      nsdata *body = [nsjsonserialization datawithjsonobject:params options:nsjsonwritingprettyprinted error:&err];     [request sethttpbody:body];     [request addvalue:[nsstring stringwithformat:@"%lu", (unsigned long)body.length] forhttpheaderfield: @"content-length"];      [nsurlconnection sendasynchronousrequest:request                                        queue:[nsoperationqueue mainqueue]                            completionhandler:^(nsurlresponse *response, nsdata *data, nserror *connectionerror)      {          if(!connectionerror)          {              nserror *error = nil;               nsdictionary *dictresponse = [nsdictionary dictionarywithdictionary:[nsjsonserialization jsonobjectwithdata:data                                                                                                                  options:nsjsonreadingallowfragments error:&error]];               dispatch_async(dispatch_get_main_queue(), ^{                  completionblock(dictresponse,(error == nil));              });               nslog(@"%@",dictresponse);          }          else          {              dispatch_async(dispatch_get_main_queue(), ^{                  completionblock(connectionerror.localizeddescription,no);              });          }      }]; }

use method instead of it.it executed fast because nsurlconnection class execute in background.


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