Bad notification for start Foreground, Invalid channel for service notification:
Solution 1
You forgot to set channel id for the notification.
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) builder.setChannelId(youChannelID);
The if
statement is optional and depends on your Min SDK level.
Solution 2
it appears that you in 8.1 must create your own notification channel.
private void startForeground() {
String channelId ="";
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
createNotificationChannel("my_service", "My Background Service");
}else{
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(getApplicationContext(), channelId);
Notification notification = notificationBuilder.setOngoing(true)
.setSmallIcon(R.mipmap.ic_launcher)
.setPriority(PRIORITY_MIN)
.setCategory(Notification.CATEGORY_SERVICE)
.build();
startForeground(101, notification);
}
}
and after
@RequiresApi(Build.VERSION_CODES.O)
private String createNotificationChannel(String channelId ,String channelName){
NotificationChannel chan = new NotificationChannel(channelId,
channelName, NotificationManager.IMPORTANCE_NONE);
chan.setLightColor(Color.BLUE);
chan.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);
NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
manager.createNotificationChannel(chan);
return channelId;
}
Update: Also don't forget to add the foreground permission as required Android P:
<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
![Fahid Nadeem](https://i.stack.imgur.com/C0Qi0.jpg?s=256&g=1)
Fahid Nadeem
Updated on July 09, 2022Comments
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Fahid Nadeem almost 2 years
So, i have an app on store with 50000 users. Recently i updated my android studio and compiled SDK to 27. I made some changes to support android 8 changes including Notification changes(e.g. Notification should have unique channel). Tested this on Android One phone(Running android 8). And everything went smooth. After updating the app on playstore i see these crashes on android 8 devices(mostly Google Pixel phones)
Fatal Exception: android.app.RemoteServiceException: Bad notification for startForeground: java.lang.RuntimeException: invalid channel for service notification: Notification(channel=null pri=-2 contentView=null vibrate=null sound=null defaults=0x0 flags=0x40 color=0xffffcf00 actions=3 vis=PRIVATE) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1768) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loop(Looper.java:164) at android.app.ActivityThread.main(ActivityThread.java:6494) at java.lang.reflect.Method.invoke(Method.java) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
I see 7 of these Errors on Crashlytics. Each has same logs and there are about 5000+ crashes for around 10 users. So, apprently app was crashing on loop.
The problem i am having is these logs don't provide any log from where i can see the source in my app that is initiating this crash. Is there any way i can find out which class is throwing this crash? Any help?
Also i have this code for notifications:
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) { int importance = NotificationManager.IMPORTANCE_HIGH; NotificationChannel mChannel = notificationManager.getNotificationChannel(id); if (mChannel == null) { mChannel = new NotificationChannel(id, name, importance); mChannel.setDescription(description); notificationManager.createNotificationChannel(mChannel); } } NotificationCompat.Builder builder = new NotificationCompat.Builder(context,id); builder.setContentTitle(pushMessages.size() + context.getString(R.string.new_notification)) .setContentIntent(pendingIntent) .setContentText(pushMessages.get(0)) .setStyle(inboxStyle) .setGroup(GROUP_KEY_NOTIFICATIONS) .setGroupSummary(true) .setAutoCancel(true); if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { builder.setSmallIcon(R.drawable.notification_img) .setColor(context.getResources().getColor(R.color.settings_yellow)); } else { builder.setSmallIcon(R.mipmap.ic_launcher); } summaryNotification = builder.build(); notificationManager.notify(i, summaryNotification);
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Mahir Özdin about 5 yearsAll other solutions was creating about your own channel and method but noboddy said the DIFFRENCE IS you must set channel id if SDK >= O Thanks for the awesome answer
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Mustafa Berkay Mutlu over 4 yearsNo need to do an if check for the API level, from the Javadoc of setChannelId: No-op on versions prior to {@link android.os.Build.VERSION_CODES#O}