startForeground fail after upgrade to Android 8 1

Question

After upgrading my phone to 8 1 Developer Preview my background service no longer starts up properly  In my long-running service I ve implemented a startForeground method to start the ongoing notification which is called in on create   TargetApi Build VERSION CODES O  private fun startForeground            Safe call  handled by compat lib      val notificationBuilder   NotificationCompat Builder this  DEFAULT CHANNEL ID       val notification   notificationBuilder setOngoing true               setSmallIcon R drawable ic launcher foreground               build       startForeground 101  notification     Error message  11-28 11 47 53 349 24704-24704  PACKAGE NAMEE AndroidRuntime  FATAL EXCEPTION  main     Process   PACKAGE NAME  PID  24704     android app RemoteServiceException  Bad notification for startForeground  java lang RuntimeException  invalid channel for service notification  Notification channel My channel pri 0 contentView null vibrate null sound null defaults 0x0 flags 0x42 color 0x00000000 vis PRIVATE          at android app ActivityThread H handleMessage ActivityThread java 1768          at android os Handler dispatchMessage Handler java 106          at android os Looper loop Looper java 164          at android app ActivityThread main ActivityThread java 6494          at java lang reflect Method invoke Native Method          at com android internal os RuntimeInit MethodAndArgsCaller run RuntimeInit java 438          at com android internal os ZygoteInit main ZygoteInit java 807   invalid channel for service notification  apparently my old channel the DEFAULT CHANNEL ID is no longer appropriate for API 27 I assume  What would be the proper channel  I ve tried to look through the documentation

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Alternative answer  if it s a Huawei device and you have implemented requirements needed for Oreo 8 Android and there are still issues only with Huawei devices than it s only device issue  you can read https   dontkillmyapp com huawei

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The first answer is great only for those people who know kotlin  for those who still using java here I translate the first answer   public Notification getNotification             String channel          if  Build VERSION SDK INT  gt   Build VERSION CODES O              channel   createChannel            else               channel                         NotificationCompat Builder mBuilder   new NotificationCompat Builder this  channel  setSmallIcon android R drawable ic menu mylocation  setContentTitle  snap map fake location            Notification notification   mBuilder                  setPriority PRIORITY LOW                   setCategory Notification CATEGORY SERVICE                   build              return notification              NonNull      TargetApi 26      private synchronized String createChannel             NotificationManager mNotificationManager    NotificationManager  this getSystemService Context NOTIFICATION SERVICE            String name    snap map fake location            int importance   NotificationManager IMPORTANCE LOW           NotificationChannel mChannel   new NotificationChannel  snap map channel   name  importance            mChannel enableLights true           mChannel setLightColor Color BLUE           if  mNotificationManager    null                mNotificationManager createNotificationChannel mChannel             else               stopSelf                      return  snap map channel            For android  P don t forget to include this permission    lt uses-permission android name  android permission FOREGROUND SERVICE    gt

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After some tinkering for a while with different solutions i found out that one must create a notification channel in Android 8 1 and above   private fun startForeground         val channelId               if  Build VERSION SDK INT  gt   Build VERSION CODES O                    createNotificationChannel  my service    My Background Service                 else                      If earlier version channel ID is not used                    https   developer android com reference android support v4 app NotificationCompat Builder html NotificationCompat Builder android content Context                                        val notificationBuilder   NotificationCompat Builder this  channelId       val notification   notificationBuilder setOngoing true               setSmallIcon R mipmap ic launcher               setPriority PRIORITY MIN               setCategory Notification CATEGORY SERVICE               build       startForeground 101  notification      RequiresApi Build VERSION CODES O  private fun createNotificationChannel channelId  String  channelName  String   String      val chan   NotificationChannel channelId              channelName  NotificationManager IMPORTANCE NONE      chan lightColor   Color BLUE     chan lockscreenVisibility   Notification VISIBILITY PRIVATE     val service   getSystemService Context NOTIFICATION SERVICE  as NotificationManager     service createNotificationChannel chan      return channelId     From my understanding background services are now displayed as normal notifications that the user then can select to not show by deselecting the notification channel   Update  Also don t forget to add the foreground permission as required Android P    lt uses-permission android name  android permission FOREGROUND SERVICE    gt

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Thanks to  CopsOnRoad  his solution was a big help but only works for SDK 26 and higher  My app targets 24 and higher    To keep Android Studio from complaining you need a conditional directly around the notification  It is not smart enough to know the code is in a method conditional to VERSION CODE O    Override public void onCreate        super onCreate        if  Build VERSION SDK INT  gt   Build VERSION CODES O          startMyOwnForeground        else         startForeground 1  new Notification        private void startMyOwnForeground         if  Build VERSION SDK INT  gt   Build VERSION CODES O            String NOTIFICATION CHANNEL ID    com example simpleapp           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 AppSpecific SMALL ICON                   setContentTitle  App is running in background                    setPriority NotificationManager IMPORTANCE MIN                   setCategory Notification CATEGORY SERVICE                   build            startForeground 2  notification

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This worked for me  In my service class  I created the notification channel for android 8 1 as below   public class Service extends Service        public static final String NOTIFICATION CHANNEL ID SERVICE    com package MyService       public static final String NOTIFICATION CHANNEL ID INFO    com package download info         Override     public void onCreate              super onCreate            if  Build VERSION SDK INT  gt   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               Notification notification   new Notification                startForeground 1  notification                       Note  Create the channel where you are creating the Notification for Build VERSION SDK INT  gt   Build VERSION CODES O

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Java Solution  Android 9 0  API 28   In your Service class  add this    Override public void onCreate        super onCreate        if  Build VERSION SDK INT  gt   Build VERSION CODES O          startMyOwnForeground        else         startForeground 1  new Notification        private void startMyOwnForeground        String NOTIFICATION CHANNEL ID    com example simpleapp       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       UPDATE  ANDROID 9 0 PIE  API 28   Add this permission to your AndroidManifest xml file    lt uses-permission android name  android permission FOREGROUND SERVICE    gt

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In my case  it s because we tried to post a notification without specifying the NotificationChannel   public static final String NOTIFICATION CHANNEL ID SERVICE    com mypackage service   public static final String NOTIFICATION CHANNEL ID TASK    com mypackage download info    public void initChannel        if  Build VERSION SDK INT  gt   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              The best place to put above code is in onCreate   method in the Application class  so that we just need to declare it once for all   public class App extends Application         Override     public void onCreate             super onCreate            initChannel              After we set this up  we can use notification with the channelId we just specified   Intent i   new Intent this  MainActivity class   i setFlags Intent FLAG ACTIVITY CLEAR TOP   Intent FLAG ACTIVITY SINGLE TOP   PendingIntent pi   PendingIntent getActivity this  0  i  PendingIntent FLAG UPDATE CURRENT   NotificationCompat Builder builder   new NotificationCompat Builder this  NOTIFICATION CHANNEL ID INFO                setContentIntent pi               setWhen System currentTimeMillis                 setContentTitle  VirtualBox exe                setContentText  Download completed                setSmallIcon R mipmap ic launcher     Then  we can use it to post a notification   int notifId   45  NotificationManager nm    NotificationManager  getSystemService NOTIFICATION SERVICE   nm notify notifId  builder build       If you want to use it as foreground service s notification   startForeground notifId  builder build

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Here is my solution  private static final int NOTIFICATION ID   200  private static final String CHANNEL ID    myChannel   private static final String CHANNEL NAME    myChannelName    private void startForeground          final NotificationCompat Builder mBuilder   new NotificationCompat Builder              getApplicationContext    CHANNEL ID        Notification notification             notification   mBuilder setTicker getString R string app name   setWhen 0                   setOngoing true                   setContentTitle getString R string app name                    setContentText  Send SMS gateway is running background                    setSmallIcon R mipmap ic launcher                   setShowWhen true                   build             NotificationManager notificationManager    NotificationManager  getApplication   getSystemService Context NOTIFICATION SERVICE              All notifications should go through NotificationChannel on Android 26  amp  above         if  Build VERSION SDK INT  gt   Build VERSION CODES O                NotificationChannel channel   new NotificationChannel CHANNEL ID                      CHANNEL NAME                      NotificationManager IMPORTANCE DEFAULT               notificationManager createNotificationChannel channel                      notificationManager notify NOTIFICATION ID  notification            Hope it will help

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Works properly on Andorid 8 1   Updated sample  without any deprecated code    public NotificationBattery Context context        this mCtx   context       mBuilder   new NotificationCompat Builder context  CHANNEL ID               setContentTitle context getString R string notification title battery                setSmallIcon R drawable ic launcher               setVisibility NotificationCompat VISIBILITY PUBLIC               setChannelId CHANNEL ID               setOnlyAlertOnce true               setPriority NotificationCompat PRIORITY MAX               setWhen System currentTimeMillis     500               setGroup GROUP               setOngoing true        mRemoteViews   new RemoteViews context getPackageName    R layout notification view battery        initBatteryNotificationIntent         mBuilder setContent mRemoteViews        mNotificationManager    NotificationManager  context getSystemService Context NOTIFICATION SERVICE        if  AesPrefs getBooleanRes R string SHOW BATTERY NOTIFICATION  true             if  Build VERSION SDK INT  gt   Build VERSION CODES O                NotificationChannel channel   new NotificationChannel CHANNEL ID  context getString R string notification title battery                       NotificationManager IMPORTANCE DEFAULT               channel setShowBadge false               channel setSound null  null               mNotificationManager createNotificationChannel channel                   else           mNotificationManager cancel Const NOTIFICATION CLIPBOARD             Old snipped  it s a different app - not related to the code above     Override public int onStartCommand Intent intent  int flags  final int startId        Log d TAG   onStartCommand         String CHANNEL ONE ID    com kjtech app N1       String CHANNEL ONE NAME    Channel One       NotificationChannel notificationChannel   null      if  android os Build VERSION SDK INT  gt   android os Build VERSION CODES O            notificationChannel   new NotificationChannel CHANNEL ONE ID                  CHANNEL ONE NAME  IMPORTANCE HIGH           notificationChannel enableLights true           notificationChannel setLightColor Color RED           notificationChannel setShowBadge true           notificationChannel setLockscreenVisibility Notification VISIBILITY PUBLIC           NotificationManager manager    NotificationManager  getSystemService NOTIFICATION SERVICE           manager createNotificationChannel notificationChannel              Bitmap icon   BitmapFactory decodeResource getResources    R mipmap ic launcher       Notification notification   new Notification Builder getApplicationContext                 setChannelId CHANNEL ONE ID               setContentTitle getString R string obd service notification title                setContentText getString R string service notification content                setSmallIcon R mipmap ic launcher               setLargeIcon icon               build         Intent notificationIntent   new Intent getApplicationContext    MainActivity class       notificationIntent setFlags Intent FLAG ACTIVITY CLEAR TOP   Intent FLAG ACTIVITY SINGLE TOP       notification contentIntent   PendingIntent getActivity getApplicationContext    0  notificationIntent  0        startForeground START FOREGROUND ID  notification        return START STICKY

[android] startForeground fail after upgrade to Android 8.1

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