Push Notifications with TaskManager, react-native expo

Question

im trying to run a function when the app is in background and the user receives a notification, but doesnt interact with it, to do this im using task manager, since sdk 42 its possible to run a function in background, having this code:

  const BACKGROUND_NOTIFICATION_TASK = 'remote-notification';

  TaskManager.defineTask(BACKGROUND_NOTIFICATION_TASK, () => {
    BackgroundTimer.runBackgroundTimer(() => { 
      console.log("holalahola");
      // schedulePushNotification();
    }, 
    2000);
  });

  Notifications.registerTaskAsync(BACKGROUND_NOTIFICATION_TASK);

this works on android, cause when app is in background and i send a notification the code in the task will executes, but in ios it doesnt, already added in app.json remote-notification

 "ios": {
      "supportsTablet": false,
      "infoPlist": {
        "UIBackgroundModes": [
          "remote-notification"
        ]
      },
      "googleServicesFile": "./GoogleService-Info.plist",
      "bundleIdentifier": "com.xxxx"
    }

is there a way i can run a function on background or a way to detect background event? using managed workflow and expo, was thinking if its not possible, then in the background just will be fetching every 15min if something happened

Answer 1

I found the solution in this github thread, basically you need to include _contentAvailable: true in your notification payload to expo push notification's service:

Example payload for ios

{ to: <push_token>, "_contentAvailable": true}