ios - AFNetworking background downloading automatically stop after some time, I need to resume it -


i using afnetwork (its base on nafdownloadrequestoperation) , task in downloading multiple zip files 1 one amazon bucket. when app in foreground every thing working well, when app goes in background mode time downloading running time , automatically stop. read blog in following method called before downloading stop. 

 [self.operationupdate setshouldexecuteasbackgroundtaskwithexpirationhandler:^{                 nslog(@"downloading stop");             }];
  • problem in background mode downloading automatically stop
  • what want: if downloading stop in background , when app again comes foreground need resume downloading point.

i use following code in appdelegate not understand how resume previous downloading.

__block uibackgroundtaskidentifier backgroundtaskidentifier = [application beginbackgroundtaskwithexpirationhandler:^(void) {         [application endbackgroundtask:backgroundtaskidentifier];         nslog(@"applicationwillresignactive");          [__server_instance cancellalldownloading];       //   [[yourrestclient sharedclient] cancelallhttpoperations];     }];

if 1 have solution please let me know, in advance.

you should use afdownloadrequestoperation

your request like

afdownloadrequestoperation *operation = [[afdownloadrequestoperation alloc] initwithrequest:request targetpath:path shouldresume:yes];     [operation setcompletionblockwithsuccess:^(afhttprequestoperation *operation, id responseobject) {         nslog(@"successfully downloaded file %@", path);     } failure:^(afhttprequestoperation *operation, nserror *error) {         nslog(@"error: %@", error);     }];     [operations addobject:operation];

after restart app, , generate request having same url, resume downloading. "shouldresume:yes" works.

so, on background task can recreate request finish download

__block uibackgroundtaskidentifier backgroundtaskidentifier = [application beginbackgroundtaskwithexpirationhandler:^(void) {         [application endbackgroundtask:backgroundtaskidentifier];         nslog(@"applicationwillresignactive");          [__server_instance cancellalldownloading];       //   recreate here request finish fownload,       //or recreate in when app enter foreground     }];

hope helps


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