215-O_android-notif-custom-channels.java

final String channelId = "my_custom_channel";

((android.app.NotificationManager) getSystemService(
    Context.NOTIFICATION_SERVICE)).createNotificationChannel(
    new NotificationChannel(channelId, "Marketing Messages",
        android.app.NotificationManager.IMPORTANCE_DEFAULT));

MarketingCloudSdk.init((Context) this, MarketingCloudConfig.builder()
    // Other configuration options
    .setNotificationCustomizationOptions(
        NotificationCustomizationOptions.create(R.drawable.ic_notification_icon, null,
            new NotificationManager.NotificationChannelIdProvider() {
              @Override @NonNull public String getNotificationChannelId(@NonNull Context context,
                  @NonNull NotificationMessage notificationMessage) {
                // Whatever custom logic required to determine which channel should be used for the message.
                return channelId;
              }
            })).build((Context) this), new MarketingCloudSdk.InitializationListener() {
  @Override public void complete(@NonNull InitializationStatus status) {
    // TODO Handle initialization status
  }
});