Bad notification for startForeground error: invalid service notification

Issue

I get this error when starting a foreground service:

Java.Lang.RuntimeException: Bad notification for startForeground: java.lang.RuntimeException: invalid service notification: Notification(channel=channelSocketIOService pri=0 contentView=null vibrate=null sound=null defaults=0x0 flags=0x42 color=0x00000000 vis=PRIVATE)
  --- End of managed Java.Lang.RuntimeException stack trace ---
android.app.RemoteServiceException: Bad notification for startForeground: java.lang.RuntimeException: invalid service notification: Notification(channel=channelSocketIOService pri=0 contentView=null vibrate=null sound=null defaults=0x0 flags=0x42 color=0x00000000 vis=PRIVATE)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1945)
    at android.os.Handler.dispatchMessage(Handler.java:107)
    at android.os.Looper.loop(Looper.java:214)
    at android.app.ActivityThread.main(ActivityThread.java:7356)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
 /end;

In service class:

private void RegisterForegroundService()
{
    Notification notification = new NotificationCompat.Builder(this, $"ServiceNotifications")
        .SetOngoing(true)
        .Build();

    StartForeground(462, notification);
}

Thanks for your help

Solution

Solution:

• Go to Android-Settings > Build
• Turn off code optimization
• Build the solution
• Turn code optimization back on

Worked for me but don't know why

Answered By - FireBird