title: How to get use BGTask in objective-c with iOS 13(Background Fetch)
body: <p>So i want to build a iOS, i am pretty new to the world of objective-c and one feature i want to implement is the ability to send a API request and do a bit of background processing while the app is not "in focus/in background". I have researched for a couple days about this <strong>BGTask</strong> API for iOS 13 and have created a projected to see if i can get "background fetch" working. I have not be able to. Im pretty sure i have everything setup correctly but i can not get background fetch functionality to trigger on my iPhone, not even once over the past couple days.</p>
  
  <ul>
  <li>I am using a actual iOS device to test this with iOS 13.4.1</li>
  <li>"Permitted background task scheduler identifiers" is setup properly in Info.plist</li>
  <li>App is signed</li>
  <li>Background processing and Background fetch is checked in <strong>Background Modes</strong></li>
  <li>I waited the 15 minute interval as per Apples documentation</li>
  </ul>
  
  <p>Here is my code. All this is just a blank iOS project using objective-c. I only edited <strong>AppDelegate.m</strong> and <strong>Info.plist</strong></p>
  
  <p><strong>AppDelegate.m</strong></p>
  
  <pre><code>#import "AppDelegate.h"
  #import &lt;BackgroundTasks/BackgroundTasks.h&gt;
  
  
  static NSString* TaskID = @"com.myapp.task";
  
  @interface AppDelegate ()
  
  @end
  
  @implementation AppDelegate
  
  
  - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
      // Override point for customization after application launch.
  
  
      [[BGTaskScheduler sharedScheduler] registerForTaskWithIdentifier:TaskID
                                                            usingQueue:nil
                                                         launchHandler:^(BGProcessingTask *task) {
  
          [self handleAppRefreshTask:task];
      }];
  
      return YES;
  }
  
  
  #pragma mark - UISceneSession lifecycle
  
  
  - (UISceneConfiguration *)application:(UIApplication *)application configurationForConnectingSceneSession:(UISceneSession *)connectingSceneSession options:(UISceneConnectionOptions *)options {
      // Called when a new scene session is being created.
      // Use this method to select a configuration to create the new scene with.
      return [[UISceneConfiguration alloc] initWithName:@"Default Configuration" sessionRole:connectingSceneSession.role];
  }
  
  
  - (void)application:(UIApplication *)application didDiscardSceneSessions:(NSSet&lt;UISceneSession *&gt; *)sceneSessions {
      // Called when the user discards a scene session.
      // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
      // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
  }
  
  
  -(void)handleAppRefreshTask:(BGProcessingTask *)task {
      //do things with task
    NSLog(@"Process started!");
    task.expirationHandler = ^{
      NSLog(@"WARNING: expired before finish was executed.");
  
    };
  
    NSString *targetUrl = @"https://webhook.site/1b274a6f-016f-4edf-8e31-4ed7058eaeac";
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
    [request setHTTPMethod:@"GET"];
    [request setURL:[NSURL URLWithString:targetUrl]];
  
    [[[NSURLSession sharedSession] dataTaskWithRequest:request completionHandler:
      ^(NSData * _Nullable data,
        NSURLResponse * _Nullable response,
        NSError * _Nullable error) {
  
          NSString *myString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
          NSLog(@"Data received: %@", myString);
    }] resume];
  
    task.expirationHandler = ^{
      NSLog(@"WARNING: expired before finish was executed.");
  
    };
  
    [task setTaskCompletedWithSuccess:YES];
  }
  
  - (void)applicationDidEnterBackground:(UIApplication *)application
  {
    NSLog(@"Entering background");
    BGProcessingTaskRequest *request = [[BGProcessingTaskRequest alloc] initWithIdentifier:TaskID];
    request.requiresNetworkConnectivity = true;
    request.requiresExternalPower = false;
    request.earliestBeginDate = [NSDate dateWithTimeIntervalSinceNow:60];
  
    @try {
      [[BGTaskScheduler sharedScheduler] submitTaskRequest:request error:nil];
    }
    @catch(NSException *e){
      NSLog(@" Unable to submit request");
    }
  
  
  }
  
  @end
  </code></pre>
  
  <p>Is background fetch broken in iOS 13? Even clicking on the “Simulate background fetch" in Xcode debug menu does not work. It just closes the app and nothing happens. Can anybody help/give any advice?</p>