cordova-plugin-background-mode: App crashed when launch any app/ android 9

You can also add the permission to Ionic 3 / Cordova apps by adding this in your config.xml under android platform:

    <platform name="android">
        <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>
    </platform>

I could run on android 9 1 - Change ForegroundService.java 2 - Add permission to AndroidManifest.xml

You can check the link : https://stackoverflow.com/questions/47531742/startforeground-fail-after-upgrade-to-android-8-1

1- ForegroundService.java

import android.app.Notification; import android.app.NotificationChannel; import android.app.NotificationManager; import android.app.PendingIntent; import android.app.Service; import android.content.Context; import android.content.Intent; import android.content.res.Resources; import android.graphics.Color; import android.os.Binder; import android.os.Build; import android.os.IBinder; import android.os.PowerManager; import android.support.v4.app.NotificationCompat; import org.json.JSONObject; import java.lang.reflect.Method;

private void keepAwake() {
    JSONObject settings = BackgroundMode.getSettings();
    boolean isSilent    = settings.optBoolean("silent", false);

    if (!isSilent) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
            startMyOwnForeground();
        else
            startForeground(NOTIFICATION_ID, makeNotification());
    }

    PowerManager powerMgr = (PowerManager)
            getSystemService(POWER_SERVICE);

    wakeLock = powerMgr.newWakeLock(
            PowerManager.PARTIAL_WAKE_LOCK, "BackgroundMode");

    wakeLock.acquire();
}

private void startMyOwnForeground(){
    String NOTIFICATION_CHANNEL_ID = "com.yourapp.id";
    String channelName = "My Background Service";
    NotificationChannel chan = new NotificationChannel(NOTIFICATION_CHANNEL_ID, channelName, NotificationManager.IMPORTANCE_NONE);
    chan.setLightColor(Color.BLUE);
    chan.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);
    NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    assert manager != null;
    manager.createNotificationChannel(chan);

    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID);
    Notification notification = notificationBuilder.setOngoing(true)
            //.setSmallIcon(R.drawable.icon_1)
            .setContentTitle("App is running in background")
            .setPriority(NotificationManager.IMPORTANCE_MIN)
            .setCategory(Notification.CATEGORY_SERVICE)
            .build();
    startForeground(2, notification);
} 

2 - AndroidManifest.xml

Give permission ForegroundService <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />

Found same conclusion as @zutakamarikana

Created a cordova-android issue #https://github.com/apache/cordova-android/issues/851

Same issue in Galaxy S8 with android 9

@zutakamarikana Thank you for noticing that this issue only occurs with “excludeFromTaskList”. I can confirm that this is indeed the case, at least on my Galaxy S9 (which is running Android 9) and Android 9 emulator. I was having the same issue but never tried running without “excludeFromTaskList”. The fix for this should be quite simple – to change following line in BackgroundModeExt.java from: if (am == null || SDK_INT < 21) to if (am == null || SDK_INT < 21 || SDK_INT > 27)

Created for test a new empty project with same problem.

(After launch app he create notify and move to background. If launch any app - he is crash)

Here apk: app-debug-apk.zip

Here source: testproject.zip

The most interesting thing is that before everything was ok. But now this problem is even with empty projects. I’m tryed update cordova, sdk/nsk, gradle and it’s didn’t help anyway.

cordova 8.1.2
gradle 4.10.2
sdk-platform-tools 28.0.2
sdk-tools 26.1.1
ndk 19.2.534
jdk jdk1.8.0_181

For test installed java and android tools to my centos server (I thought maybe trouble in my windows dev-environment)

• Created empty project cordova create hello com.example.hello HelloWorld
• Added platform cd hello & cordova platform add
• Installed plugin cordova plugin add https://github.com/katzer/cordova-plugin-background-mode.git
• Added cordova.plugins.backgroundMode.setDefaults({ title: 'test', text: 'test', }); cordova.plugins.backgroundMode.enable(); cordova.plugins.backgroundMode.excludeFromTaskList(); cordova.plugins.backgroundMode.moveToBackground(); after this.receivedEvent('deviceready'); in js/index.js
• cordova build android
• Downloaded and installed apk to my phone and take the same bag (App is work till I’m not start any other app)