Not able to run headless task in background.[Android-9]

Your Environment

• Plugin version: 2.7.0
• Platform: Android
• OS version: windows 10 (develop)/ Android-9(test device)
• Device manufacturer / model: redmi poco f1
• React Native version (react-native -v): react-native-cli: 2.0.1 react-native: 0.60.5
• Plugin config

Expected Behavior

Execute(hit api) periodically after 15 min

Actual Behavior

After closing the app, task is listed when checked via command adb shell dumpsys jobscheduler | grep com.bg_fetch

JOB #u0a478/999: 8b2dc7 com.bg_fetch/com.transistorsoft.tsbackgroundfetch.FetchJobService u0a478 tag=job/com.bg_fetch/com.transistorsoft.tsbackgroundfetch.FetchJobService Source: uid=u0a478 user=0 pkg=com.bg_fetch Service: com.bg_fetch/com.transistorsoft.tsbackgroundfetch.FetchJobService #u0a478/999 from u0a478 idle: com.bg_fetch [RUN_ANY_IN_BACKGROUND allowed] RUNNABLE #u0a478/999 from u0a478: com.bg_fetch RUNNABLE

After running manual event, adb shell cmd jobscheduler run -f com.bg_fetch 999 output-Running job [FORCED] But the task is not complted(api called) And job is killed there is no job when again checked with
adb shell dumpsys jobscheduler | grep com.bg_fetch No output

Steps to Reproduce

1.index .js

import BackgroundFetch from "react-native-background-fetch";

let MyHeadlessTask = async () => {
    console.log('[BackgroundFetch HeadlessTask] start');
    let response = await fetch('http://431c21b5.ngrok.io/');
    let responseJson = await response.json();
    console.log('[BackgroundFetch HeadlessTask] response: ', responseJson);
    BackgroundFetch.finish();
  }

  BackgroundFetch.registerHeadlessTask(MyHeadlessTask);

2.App.js

componentDidMount() {
    // Configure it.
    BackgroundFetch.configure({
      minimumFetchInterval: 15,     // <-- minutes (15 is minimum allowed)
      // Android options
      stopOnTerminate: false,
      startOnBoot: true,
      requiredNetworkType: BackgroundFetch.NETWORK_TYPE_ANY, // Default
      requiresCharging: false,      // Default
      requiresDeviceIdle: false,    // Default
      requiresBatteryNotLow: false, // Default
      requiresStorageNotLow: false,  // Default
      enableHeadless:true,
    }, async() => {
      console.log('[BackgroundFetch HeadlessTask] start');
      let response = await fetch('http://431c21b5.ngrok.io/');
      let responseJson = await response.json();
      console.log('[BackgroundFetch HeadlessTask] response: ', responseJson);
      BackgroundFetch.finish(BackgroundFetch.FETCH_RESULT_NEW_DATA);
    }, (error) => {
      console.log("[js] RNBackgroundFetch failed to start");
    });

    // Optional: Query the authorization status.
    BackgroundFetch.status((status) => {
      switch(status) {
        case BackgroundFetch.STATUS_RESTRICTED:
          console.log("BackgroundFetch restricted");
          break;
        case BackgroundFetch.STATUS_DENIED:
          console.log("BackgroundFetch denied");
          break;
        case BackgroundFetch.STATUS_AVAILABLE:
          console.log("BackgroundFetch is enabled");
          break;
      }
    });
  }

Context

Want to send data to backend for processing

Debug logs

09-05 17:36:07.244 24121 24155 D TSBackgroundFetch: - configure: { 09-05 17:36:07.244 24121 24155 D TSBackgroundFetch: “minimumFetchInterval”: 15, 09-05 17:36:07.244 24121 24155 D TSBackgroundFetch: “stopOnTerminate”: false, 09-05 17:36:07.244 24121 24155 D TSBackgroundFetch: “requiredNetworkType”: 1, 09-05 17:36:07.244 24121 24155 D TSBackgroundFetch: “requiresBatteryNotLow”: false, 09-05 17:36:07.244 24121 24155 D TSBackgroundFetch: “requiresCharging”: false, 09-05 17:36:07.244 24121 24155 D TSBackgroundFetch: “requiresDeviceIdle”: false, 09-05 17:36:07.244 24121 24155 D TSBackgroundFetch: “requiresStorageNotLow”: false, 09-05 17:36:07.244 24121 24155 D TSBackgroundFetch: “startOnBoot”: true, 09-05 17:36:07.244 24121 24155 D TSBackgroundFetch: “forceReload”: false, 09-05 17:36:07.244 24121 24155 D TSBackgroundFetch: “jobService”: “com.transistorsoft.rnbackgroundfetch.HeadlessJobService” 09-05 17:36:07.244 24121 24155 D TSBackgroundFetch: } 09-05 17:36:07.247 24121 24155 D TSBackgroundFetch: - start

[christocracy]

In my BackgroundFetch headless-task, I’ve added some code similar to yours, executing a request to my dev server to retrieve a list of devices as JSON:

http://tracker.transistorsoft.com/devices?company_token=transistor-rn

📂 index.js

let BackgroundFetchHeadlessTask = async (event) => {
  console.log('[BackgroundFetch HeadlessTask] start');

  let url = "http://tracker.transistorsoft.com/devices?company_token=transistor-rn";
  let response = await fetch(url);
  let json = await response.json();
  console.log('[BackgroundFetch] response: ', json);

  console.log('[BackgroundFetch HeadlessTask] finished');

  BackgroundFetch.finish();
}

BackgroundFetch.registerHeadlessTask(BackgroundFetchHeadlessTask);

• After terminating my app, I simulate a fetch event:

adb shell cmd jobscheduler run -f com.my.app.id 999

TSBackgroundFetch: - Background Fetch event received
TSBackgroundFetch: - finish
TSBackgroundFetch: - jobFinished
TSBackgroundFetch: HeadlessJobService onStartJob

TSBackgroundFetch: onHeadlessJsTaskStart: 1  <--- TASK START

ReactNativeJS: [BackgroundFetch HeadlessTask] start
ReactNativeJS: '[BackgroundFetch] response: ', [ { device_id: 'ReactNative-Pixel-3a',
ReactNativeJS:     device_model: 'Pixel 3a (ReactNative)' },
ReactNativeJS:   { device_id: 'ReactNative-ANE-LX3',
ReactNativeJS:     device_model: 'ANE-LX3 (ReactNative)' },
ReactNativeJS:   { device_id: 'ReactNative-ONEPLUS-A5010',
ReactNativeJS:     device_model: 'ONEPLUS A5010 (ReactNative)' },
ReactNativeJS:   { device_id: 'ReactNative-SM-A520W',
ReactNativeJS:     device_model: 'SM-A520W (ReactNative)' },
ReactNativeJS:   { device_id: 'ReactNative-XT1068',
ReactNativeJS:     device_model: 'XT1068 (ReactNative)' },
ReactNativeJS:   { device_id: 'ReactNative-Pixel',
ReactNativeJS:     device_model: 'Pixel (ReactNative)' },
ReactNativeJS:   { device_id: 'ReactNative-TA-1027',
ReactNativeJS:     device_model: 'TA-1027 (ReactNative)' },
ReactNativeJS:   { device_id: 'ReactNative-Mi-A2-Lite',
ReactNativeJS:     device_model: 'Mi A2 Lite (ReactNative)' },
ReactNativeJS:   { device_id: 'ReactNative-Nexus-4',
ReactNativeJS:     device_model: 'Nexus 4 (ReactNative)' },
ReactNativeJS:   { device_id: 'ReactNative-SAMSUNG-SM-J320A',
ReactNativeJS:     device_model: 'SAMSUNG-SM-J320A (ReactNative)' },
ReactNativeJS:   { device_id: 'ReactNative-Nexus-5',
ReactNativeJS:     device_model: 'Nexus 5 (ReactNative)' },
.
.
.
ReactNativeJS:   } ]
ReactNativeJS: [BackgroundFetch HeadlessTask] finished
TSBackgroundFetch: - finish
TSBackgroundFetch: HeadlessJobService jobFinished
TSBackgroundFetch: onHeadlessJsTaskFinish: 1  <--- TASK FINISH

[Zilleabbas10]

@christocracy Facing this issue in android 9 as well. Is there any way to track when OS will trigger the task. Because in android 6 it is working fine, task is trigger after 15 min either app is killed or in background state but this same thing is not working in Android 9 ?