cordova-plugin-background-mode: Android 8.1 - invalid channel for service notification

@Gurjit-ONEBCG

Below changes in the cordova-plugin-background-mode worked for me. Crash issue is resolved as well as background plugin is working fine.

1. In ForegroundService.java made below changes: a) Add below import statement: import android.app.NotificationChannel; b) Add below global variables:

public static final String NOTIFICATION_CHANNEL_ID_SERVICE = "de.appplant.cordova.plugin.background";
public static final String NOTIFICATION_CHANNEL_ID_INFO = "com.package.download_info";

c) Replace keepAwake() method with below code:

private void keepAwake() {
       JSONObject settings = BackgroundMode.getSettings();
       boolean isSilent    = settings.optBoolean("silent", false);
       if (!isSilent) {
           if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
               NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
               nm.createNotificationChannel(new NotificationChannel(NOTIFICATION_CHANNEL_ID_SERVICE, "App Service", NotificationManager.IMPORTANCE_DEFAULT));
               nm.createNotificationChannel(new NotificationChannel(NOTIFICATION_CHANNEL_ID_INFO, "Download Info", NotificationManager.IMPORTANCE_DEFAULT));
           } else {
               startForeground(NOTIFICATION_ID, makeNotification());
           }
       }

       PowerManager powerMgr = (PowerManager)
               getSystemService(POWER_SERVICE);
       wakeLock = powerMgr.newWakeLock(
               PowerManager.PARTIAL_WAKE_LOCK, "BackgroundMode");
       wakeLock.acquire();
   } 

1. Add below in AndroidManifest.xml file: <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />

2. In code where I invoked background mode plugin, used disableWebViewOptimizations option on activate:

cordova.plugins.backgroundMode.on('activate', function() {
       cordova.plugins.backgroundMode.disableWebViewOptimizations();
 });

Alternately, you can try https://github.com/katzer/cordova-plugin-background-mode/pull/416 but do remember to add FOREGROUND_SERVICE permission in AndroidManifest

@maerlynflagg I also spent long time to solve this problem. I solved this problem with below github (fork version).

try below command.

$ ionic cordova platform rm android
$ ionic cordova platform rm ios
$ ionic cordova plugin add https://github.com/tushe/cordova-plugin-background-mode.git
$ npm install --save @ionic-native/background-mode

$ ionic cordova platform add android
$ ionic cordova platform add ios

@katzer any chance?

Have similar issues with Android 8.1 however re-adding the platform didn’t resolve it. On Android P (Pixel 2) I receive the following error: Issue: java.lang.RuntimeException: Unable to create service de.appplant.cordova.plugin.background.ForegroundService: java.lang.SecurityException: Permission Denial: startForeground from pid=17789, uid=10151 requires android.permission.FOREGROUND_SERVICE So if I add the permission android.permission.FOREGROUND_SERVICE I get the fatal exception: android.app.RemoteServiceException: Bad notification for startForeground: java.lang.RuntimeException: invalid channel for service notification

Looks like an update might be needed - maybe something like this? ([https://stackoverflow.com/questions/47531742/startforeground-fail-after-upgrade-to-android-8-1])

EDIT: thanks @writer0713 that version has the fixes, updating ForegroundService.java with the updates from that git fixed the issue!

Hi,

You could add FOREGROUND_SERVICE permission in your app once without updating AndroidManifest everytime you build the app.

Add those lines to your config.xml to grant the missing permission:

<config-file parent="./" target="app/src/main/AndroidManifest.xml" xmlns:android="http://schemas.android.com/apk/res/android"> <uses-permission android:name="android.permission.FOREGROUND_SERVICE" /> </config-file>

Any chance on this solution be added to the main repo code?

@brauliofreire is it still working fine on Android 8+ phones?

yes! I made tests in android 8.1 and it is working fine!!

@maerlynflagg

@maerlynflagg I also spent long time to solve this problem. I solved this problem with below github (fork version).

try below command.

$ ionic cordova platform rm android
$ ionic cordova platform rm ios
$ ionic cordova plugin add https://github.com/tushe/cordova-plugin-background-mode.git
$ npm install --save @ionic-native/background-mode

$ ionic cordova platform add android
$ ionic cordova platform add ios

@writer0713 This fixed the crash issue, but background plugin stopped working 😦