Android Studio Firebase Cloud Messaging Not Working? - firebase

Question

I am developing an e-commerce application in which when user orders places an order, the seller should receive a notification of new order. I am able to send notifications as it shows a toast message of "Response" but no notification is received on the seller part. I checked the code multiple times but I am still unable to find out where I am making the mistake. Here is my code
public class MyFirebaseMessaging extends FirebaseMessagingService {
private static final String NOTIFICATION_CHANNEL_ID = "MY_NOTIFICATION_CHANNEL_ID";
FirebaseAuth firebaseAuth;
FirebaseUser firebaseUser;
#Override
public void onMessageReceived(#NonNull RemoteMessage remoteMessage) {
super.onMessageReceived(remoteMessage);
firebaseAuth = FirebaseAuth.getInstance();
firebaseUser = firebaseAuth.getCurrentUser();
String notificationType = remoteMessage.getData().get("notificationType");
if (notificationType.equals("NewOrder")){
String buyerUid = remoteMessage.getData().get("buyerUid");
String sellerUid = remoteMessage.getData().get("sellerUid");
String orderId = remoteMessage.getData().get("orderId");
String notificationTitle = remoteMessage.getData().get("notificationTitle");
String notificationMessage = remoteMessage.getData().get("notificationMessage");
if (firebaseUser != null && firebaseAuth.getUid().equals(sellerUid)){
showNotification(orderId,sellerUid,buyerUid,notificationTitle,notificationMessage,notificationType);
}
}
if (notificationType.equals("OrderStatusChanged")){
String buyerUid = remoteMessage.getData().get("buyerUid");
String sellerUid = remoteMessage.getData().get("sellerUid");
String orderId = remoteMessage.getData().get("orderId");
String notificationTitle = remoteMessage.getData().get("notificationTitle");
String notificationMessage = remoteMessage.getData().get("notificationMessage");
if (firebaseUser != null && firebaseAuth.getUid().equals(buyerUid)){
showNotification(orderId,sellerUid,buyerUid,notificationTitle,notificationMessage,notificationType);
}
}
}
private void showNotification(String orderId,String sellerUid,String buyerUid,String notificationTitle,String notificationDescription,String notificationType){
NotificationManager notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
int notificationID = new Random().nextInt(3000);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
setUpNotificationChannel(notificationManager);
}
Intent intent = null;
if (notificationType.equals("NewOrder")){
intent = new Intent(this,ShopOrderDetails.class);
intent.putExtra("orderId",orderId);
intent.putExtra("orderBy",buyerUid);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
} else if (notificationType.equals("OrderStatusChanged")){
intent = new Intent(this,UserOrderDetailsActivity.class);
intent.putExtra("orderId",orderId);
intent.putExtra("orderTo",sellerUid);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
}
PendingIntent pendingIntent = PendingIntent.getActivity(this,0,intent,PendingIntent.FLAG_ONE_SHOT);
Bitmap largeIcon = BitmapFactory.decodeResource(getResources(),R.drawable.indianflag);
//notification sound
Uri notificationSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this,NOTIFICATION_CHANNEL_ID);
notificationBuilder.setSmallIcon(R.drawable.indianflag)
.setLargeIcon(largeIcon)
.setContentTitle(notificationTitle)
.setContentText(notificationDescription)
.setSound(notificationSoundUri)
.setAutoCancel(true)
.setContentIntent(pendingIntent);
//show notification
notificationManager.notify(notificationID,notificationBuilder.build());
}
#RequiresApi(api = Build.VERSION_CODES.O)
private void setUpNotificationChannel(NotificationManager notificationManager) {
CharSequence channelName = "Some sample text";
String channelDescription = "Channel Description Here";
NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID,channelName,NotificationManager.IMPORTANCE_HIGH);
notificationChannel.setDescription(channelDescription);
notificationChannel.enableLights(true);
notificationChannel.setLightColor(Color.RED);
notificationChannel.enableVibration(true);
if (notificationManager != null){
notificationManager.createNotificationChannel(notificationChannel);
}
}
}
private void prepareNotification(String orderId){
String NOTIFICATION_TOPIC = "/topics/"+ Constants.FCM_TOPIC;
String NOTIFICATION_TITLE = "New Order "+orderId;
String NOTIFICATION_MESSAGE = "You have a new order";
String NOTIFICATION_TYPE = "NewOrder";
JSONObject notificationJo = new JSONObject();
JSONObject notificationBodyJo = new JSONObject();
Log.d("userId",mAuth.getUid());
Log.d("shopId",shopId);
Log.d("orderId",orderId);
try{
notificationBodyJo.put("notificationType",NOTIFICATION_TYPE);
notificationBodyJo.put("buyerUid",mAuth.getUid());
notificationBodyJo.put("sellerUid",shopId);
notificationBodyJo.put("orderId",orderId);
notificationBodyJo.put("notificationTitle",NOTIFICATION_TITLE);
notificationBodyJo.put("notificationMessage",NOTIFICATION_MESSAGE);
notificationJo.put("to",NOTIFICATION_TOPIC);
notificationJo.put("data",notificationBodyJo);
}catch (Exception e){
Toast.makeText(ProceedToCheckoutActivity.this, ""+e.getMessage(), Toast.LENGTH_SHORT).show();
}
sendFCMNotification(notificationJo,orderId);
}
private void sendFCMNotification(JSONObject notificationJo, String timeStamp1) {
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest("https://fcm.googleapis.com/fcm/send", notificationJo, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Toast.makeText(ProceedToCheckoutActivity.this, "Response", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(ProceedToCheckoutActivity.this,UserOrderDetailsActivity.class);
intent.putExtra("shopID",shopId);
intent.putExtra("orderId",timeStamp1);
startActivity(intent);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e("Error Here",error.toString());
Toast.makeText(ProceedToCheckoutActivity.this, "Error", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(ProceedToCheckoutActivity.this,UserOrderDetailsActivity.class);
intent.putExtra("shopID",shopId);
intent.putExtra("orderId",timeStamp1);
startActivity(intent);
}
}){
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String,String> headers = new HashMap<>();
headers.put("Content-Type","application/json");
headers.put("Authorization","key="+Constants.FCM_KEY);
return headers;
}
};
Volley.newRequestQueue(this).add(jsonObjectRequest);
}

Answer 1

Please use retrofit or volley to send notifications to second user.
Link: sending fcm push notifications using retrofit library in android
Module:app dependencies
implementation 'com.squareup.retrofit2:retrofit:2.6.0'
implementation 'com.squareup.retrofit2:converter-gson:2.6.0'
ApiClient
public class ApiClient {
private static final String BASE_URL = "https://fcm.googleapis.com/";
private static Retrofit retrofit = null;
public static Retrofit getClient() {
if (retrofit == null) {
retrofit = new Retrofit.Builder()
.baseUrl(BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
}
return retrofit;
}
}
ApiInterface
public interface ApiInterface {
#Headers({"Authorization: key=" + ConstantKey.SERVER_KEY, "Content-Type:application/json"})
#POST("fcm/send")
Call<ResponseBody> sendNotification(#Body RootModel root);
}
RootModel
public class RootModel {
#SerializedName("to") // "to" changed to token
private String token;
#SerializedName("notification")
private NotificationModel notification;
#SerializedName("data")
private DataModel data;
public RootModel(String token, NotificationModel notification, DataModel data) {
this.token = token;
this.notification = notification;
this.data = data;
}
public String getToken() {
return token;
}
public void setToken(String token) {
this.token = token;
}
public NotificationModel getNotification() {
return notification;
}
public void setNotification(NotificationModel notification) {
this.notification = notification;
}
public DataModel getData() {
return data;
}
public void setData(DataModel data) {
this.data = data;
}
}
NotificationModel
public class NotificationModel {
private String title;
private String body;
public NotificationModel(String title, String body) {
this.title = title;
this.body = body;
}
public String getBody() {
return body;
}
public void setBody(String body) {
this.body = body;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
}
DataModel
public class DataModel {
private String name;
private String age;
public DataModel(String name, String age) {
this.name = name;
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
}
Send notification by using this method
private void sendNotificationToUser(String token) {
RootModel rootModel = new RootModel(token, new NotificationModel("Title", "Body"), new DataModel("Name", "30"));
ApiInterface apiService = ApiClient.getClient().create(ApiInterface.class);
retrofit2.Call<ResponseBody> responseBodyCall = apiService.sendNotification(rootModel);
responseBodyCall.enqueue(new Callback<ResponseBody>() {
#Override
public void onResponse(retrofit2.Call<ResponseBody> call, retrofit2.Response<ResponseBody> response) {
Log.d(TAG,"Successfully notification send by using retrofit.");
}
#Override
public void onFailure(retrofit2.Call<ResponseBody> call, Throwable t) {
}
});
}