Admin -> User Notification Communication

Using this application, admin can send notification to user app with custom title and message.

Step - 1

• Connect your admin application to Firebase Cloud Messaging.

• Implement the following dependecies,

   // Add the dependency for the Google services Gradle plugin
   id("com.google.gms.google-services") version "4.4.1" apply false
  
   // Mention this id on top in gradle file
   id("com.google.gms.google-services")
  
   // Firebase
   implementation(platform("com.google.firebase:firebase-bom:32.7.2"))
   implementation("com.google.firebase:firebase-analytics")
   implementation("com.google.firebase:firebase-messaging")
  
   //RetroFit
   implementation ("com.squareup.retrofit2:retrofit:2.9.0")
   implementation ("com.squareup.retrofit2:converter-gson:2.9.0")
  

Step - 2

• Implement the firebase post API provoided by FCM (Firebase Cloud Messaging) ,to send notification data.

• Base URL -

   public static final String Base_URL = "https://fcm.googleapis.com";
  

• End URL

     @Headers({"Authorization: key=" + API_KEY, "Content_Type:"+CONTENT_TYPE})
     @POST("fcm/send")
     Call<PushNotificationData> sendNotification(@Body PushNotificationData pushNotificationData);
  

• Generate API Key from Firebase cloud messaging section.

   public static final String API_KEY = "AAAAcqyTd4U:APA91bGbtAXL0pzzBzXcg-G7K3rxDXTAXCkF9eVwN2b8a7UDAevhF1J6fc_yEJyyzp0Hz6_OO6d7gOHO8MJx8khpYFNoSokOF6e3-ujWVhUxcxDuSIXuhW-qDGvjzY2onKqHZRdx9brL";
  
    public static final String CONTENT_TYPE = "application/json".
  

• NOTE - This base url is only valid till June 2024 becouse of changement in firebase policies.

Step - 3

• Now call this POST API in your MainActivity.

Step - 4

• Now come to notification reciever applicatioon
• https://github.com/ArjunGupta08/Notification-Receiver