Function doWork

example/HelloWorld/index.js:34–57

(eventName)

let doWorkCounter = 0;

const doWork = async (eventName) => {
  return new Promise(async (resolve, reject) => {
    if (eventName == 'terminate') {
      doWorkCounter = 0;
      // Perform a weird action (for testing) with an interval timer and .startBackgroundTask.
      const bgTaskId = await BackgroundGeolocation.startBackgroundTask();
      // Print * tick * to log every second.
      const timer = setInterval(() => {
        console.log(`[BGGeoHeadlessTask *][doWork] * tick ${++doWorkCounter}/10 *`);
      }, 1000);
      // After 10s, stop the interval and stop our background-task.
      setTimeout(() => {
        clearInterval(timer);
        BackgroundGeolocation.stopBackgroundTask(bgTaskId);
        resolve();
      }, 10000);

    } else {
      // do nothing
      console.log('[BGGeoHeadlessTask *][doWork]', eventName);
      resolve();
    }
  });
}

AppRegistry.registerComponent(appName, () => App);