How to use react-native-background-fetch - 10 common examples

}, async () => {
      console.log('- BackgroundFetch start');
      let location = await BackgroundGeolocation.getCurrentPosition({persist: true, samples:1, extras: {'context': 'background-fetch-position'}});
      console.log('- BackgroundFetch current position: ', location) // <-- don't see this
      BackgroundFetch.finish(BackgroundFetch.FETCH_RESULT_NEW_DATA);
    }, (error) => {
      console.log('[js] RNBackgroundFetch failed to start')

let BackgroundFetchHeadlessTask = async (event) => {
  console.log('[BackgroundFetch HeadlessTask] start');
  // Important:  await asychronous tasks when using HeadlessJS.
  /* DISABLED
  let location = await BackgroundGeolocation.getCurrentPosition({persist: false, samples: 1});
  console.log('- current position: ', location);
  // Required:  Signal to native code that your task is complete.
  // If you don't do this, your app could be terminated and/or assigned
  // battery-blame for consuming too much time in background.
  */
  console.log('[BackgroundFetch HeadlessTask] finished');

  BackgroundFetch.finish();
}

() => {
        console.log('[js] Received background-fetch event');
        // Required: Signal completion of your task to native code
        // If you fail to do this, the OS can terminate your app
        // or assign battery-blame for consuming too much background-time
        BackgroundFetch.finish(BackgroundFetch.FETCH_RESULT_NEW_DATA);
      },
      error => {

schedule: function(options = {}) {
    // Cancel existing tasks
    BackgroundFetch.stop()

    // Configure the native module
    // Automatically calls RNBackgroundFetch#start
    BackgroundFetch.configure(
      { stopOnTerminate: false },
      this._definition,
      () => {
        console.warn(`Background Fetch failed to start`)
      }
    )
  },

configureBackgroundFetch() {
    // [Optional] Configure BackgroundFetch.
    BackgroundFetch.configure({
      minimumFetchInterval: 15, // <-- minutes (15 is minimum allowed)
      stopOnTerminate: false, // <-- Android-only,
      startOnBoot: true, // <-- Android-only
      enableHeadless: true,
      requiresCharging: false,
      requiredNetworkType: BackgroundFetch.NETWORK_TYPE_NONE,
      requiresDeviceIdle: false,
      requiresBatteryNotLow: false,
      requiresStorageNotLow: false
    }, async () => {
      console.log('- BackgroundFetch start');
      let location = await BackgroundGeolocation.getCurrentPosition({persist: true, samples:1, extras: {'context': 'background-fetch-position'}});
      console.log('- BackgroundFetch current position: ', location) // <-- don't see this
      BackgroundFetch.finish(BackgroundFetch.FETCH_RESULT_NEW_DATA);
    }, (error) => {
      console.log('[js] RNBackgroundFetch failed to start')

componentDidMount() {
    //AppState.addEventListener('change', this.onAppStateChange.bind(this));

    this.setState({
      enabled: false
    });

    BackgroundFetch.configure({
      stopOnTerminate: false,
      minimumFetchInterval: 0
    }, () => {
      this.bgService.getPlugin().logger.ok('FETCH RECEIVED');
      BackgroundFetch.finish();
    }, (error) => {
      console.warn('Fetch error: ', error);
    });

    this.bgService.getState((state) => {
      this.configureBackgroundGeolocation(state);
    });

    // Fetch current app settings state.
    this.settingsService.getState((state) => {
      this.setState({

static configureBackgroundFetch() {
    BackgroundFetch.configure(
      {
        minimumFetchInterval: 15, // <-- minutes (15 is minimum allowed)
        stopOnTerminate: false, // <-- Android-only,
        startOnBoot: true, // <-- Android-only
      },
      () => {
        console.log('[js] Received background-fetch event');
        // Required: Signal completion of your task to native code
        // If you fail to do this, the OS can terminate your app
        // or assign battery-blame for consuming too much background-time
        BackgroundFetch.finish(BackgroundFetch.FETCH_RESULT_NEW_DATA);
      },
      error => {
        console.log('[js] RNBackgroundFetch failed to start');
        console.log(error);
      },

setup() {
    BackgroundFetch.configure(
      {},
      () => {
        this.store.dispatch(TriggersActions.backgroundFetch())
      },
      error => {
        // @todo - handle error
        console.info('backgroundFetch error')
      }
    )
  }
}

// Important:  await asychronous tasks when using HeadlessJS.
  /* DISABLED
  let location = await BackgroundGeolocation.getCurrentPosition({persist: false, samples: 1});
  console.log('- current position: ', location);
  // Required:  Signal to native code that your task is complete.
  // If you don't do this, your app could be terminated and/or assigned
  // battery-blame for consuming too much time in background.
  */
  console.log('[BackgroundFetch HeadlessTask] finished');

  BackgroundFetch.finish();
}


// Register your BackgroundFetch HeadlessTask
BackgroundFetch.registerHeadlessTask(BackgroundFetchHeadlessTask);

configureBackgroundFetch() {
    // [Optional] Configure BackgroundFetch.
    BackgroundFetch.configure({
      minimumFetchInterval: 15, // <-- minutes (15 is minimum allowed)
      stopOnTerminate: false, // <-- Android-only,
      startOnBoot: true, // <-- Android-only
      enableHeadless: true,
      requiresCharging: false,
      requiredNetworkType: BackgroundFetch.NETWORK_TYPE_NONE,
      requiresDeviceIdle: false,
      requiresBatteryNotLow: false,
      requiresStorageNotLow: false
    }, async () => {
      console.log('- BackgroundFetch start');
      let location = await BackgroundGeolocation.getCurrentPosition({persist: true, samples:1, extras: {'context': 'background-fetch-position'}});
      console.log('- BackgroundFetch current position: ', location) // <-- don't see this
      BackgroundFetch.finish(BackgroundFetch.FETCH_RESULT_NEW_DATA);
    }, (error) => {
      console.log('[js] RNBackgroundFetch failed to start')
    });
  }