NotificationService

package br.com.vannon.drogariacatarinense;

import android.content.Intent;
import android.content.Context;
import android.support.v4.content.LocalBroadcastManager;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.NotificationManagerCompat;
import android.app.PendingIntent;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.NotificationChannel;
import android.graphics.Color;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import io.invertase.firebase.R;

import com.facebook.react.HeadlessJsTaskService;
import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;

import io.invertase.firebase.Utils;

import java.util.Map;
import java.util.HashMap;
import java.util.Iterator;

import org.json.JSONObject;
import org.json.JSONException;

import br.com.vannon.drogariacatarinense.MainActivity;

public class NotificationService extends FirebaseMessagingService {

  private static final String TAG = "NotificationService";
  public static final String REMOTE_NOTIFICATION_EVENT = "notifications-remote-notification";

  @Override
  public void onMessageReceived(RemoteMessage message) {
    Log.d(TAG, "onMessageReceived event received");
    try {
      Intent intent = new Intent(this, MainActivity.class);
      intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

      PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);

      Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
      NotificationCompat.Builder notificationBuilder;
      NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

        notificationBuilder = new NotificationCompat.Builder(this, message.getData().get("android_channel_id"))
                .setSmallIcon(R.mipmap.ic_launcher)
                .setContentTitle(message.getData().get("title"))
                .setContentText(message.getData().get("body"))
                .setAutoCancel(true)
                .setSound(defaultSoundUri)
                .setPriority(NotificationCompat.PRIORITY_MAX)
                .setContentIntent(pendingIntent)
                .setContentText(message.getData().get("body"));
      } else {
        notificationBuilder = new NotificationCompat.Builder(this)
                .setSmallIcon(R.mipmap.ic_launcher)
                .setContentTitle(message.getData().get("title"))
                .setContentText(message.getData().get("body"))
                .setAutoCancel(true)
                .setSound(defaultSoundUri)
                .setPriority(NotificationCompat.PRIORITY_MAX)
                .setContentIntent(pendingIntent)
                .setContentText(message.getData().get("body"));
      }

      notificationManager.notify(0, notificationBuilder.build());
    } catch (Exception e) {
      Log.d(TAG, "Error ", e);
    }
  }
}