IMPORTANCE_UNSPECIFIED NotificationChannel (IUNC)

IUNC:   SOLD       

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I want to show notification from my service for android O but I got this error and I want to use IMPORTANCE_UNSPECIFIED with notification channel.

This error even appears.

java.lang.IllegalArgumentException: Invalid importance level

As an illustration, my code snippet looks something like this.

if (android.os.Build.VERSION.SDK_INT >= 26) {
            try {

                  // Create the channel for the notification
                    NotificationChannel mChannel = new NotificationChannel(CHANNEL_ID, name, NotificationManager.IMPORTANCE_UNSPECIFIED);

                    // Set the Notification Channel for the Notification Manager.
                    mNotificationManager.createNotificationChannel(mChannel);

                    Notification.Builder builder = new Notification.Builder(this, CHANNEL_ID)
                            .setSmallIcon(R.mipmap.instant_app_icon)
                            .setContentTitle(getString(R.string.app_name))
                            //  .setContentText("Instant Service")
                            .setAutoCancel(true);

                    PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
                            new Intent(this, MainActivity.class), PendingIntent.FLAG_UPDATE_CURRENT);

                    builder.setContentIntent(contentIntent);

                    Notification notification = builder.build();
                    startForeground(1, notification);

                }

                catch (Exception ex){
                    ex.printStackTrace();
                }
            }

Enlightenment

As per the official documentation, you cannot use  IMPORTANCE_UNSPECIFIED, here is a snippet.

added in API level 24 int IMPORTANCE_UNSPECIFIED Value signifying that the user has not expressed an importance. This value is for persisting preferences, and should never be associated with an actual notification. for more info you can read here https://developer.android.com/reference/android/app/NotificationManager.html#IMPORTANCE_UNSPECIFIED

Instead you can use one of the importance levels below.

• IMPORTANCE_DEFAULT
• IMPORTANCE_HIGH
• IMPORTANCE_LOW
• IMPORTANCE_MAX
• IMPORTANCE_MIN

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