FCM-Sender

Push Notification Library for Android. It uses FCM rest api provided by Firebase

https://firebase.google.com/docs/cloud-messaging/send-message

How to Use

For a working implementation, please have a look at the Sample Project

1. Include the library as local library project.

• Setup firebase messsaging Refer this

• Add the dependency to your app build.gradle file

dependencies {
   implementation 'com.github.a914-gowtham:fcm-sender:Tag'
}

• Add to project's root build.gradle file:

allprojects {
	repositories {
		maven { url 'https://jitpack.io' }
	}
}

2. Create FcmSender builder and sendPush

   val data = JSONObject()
        data.put("title", "Message from Jon")
        data.put("message", "Click to view..")
        data.put("type", "new_message")
        
         val push = FCMSender.Builder()
            .serverKey("your firebase serverkey")
            .toTokenOrTopic("topic/TestTopic") //either topic or user registration token
//          .toMultipleTokens(listOfToken)
            .responseListener(this)
//          .setTimeToLive(30) // 0 to 2,419,200 seconds (4 weeks)
//          .setDryRun(false)  //test a request without actually sending a message.
            .setData(data)
            .build()
        push.sendPush(this)

• Java

     JSONObject data=new JSONObject();
        data.put("title","Message from Jon");
        data.put("message", "Click to view..");
        data.put("type", "new_message");
        
       FCMSender fcmSender= new FCMSender.Builder()
               .serverKey("your firebase serverkey")
               .toTokenOrTopic("/topics/myTopic") //use either topic or user registration token
//             .toMultipleTokens(listOfToken)
               .responseListener(this)
//             .setTimeToLive(30) // 0 to 2,419,200 seconds (4 weeks)
//             .setDryRun(false)  //test a request without actually sending a message.
               .setData(data)
               .build();
       fcmSender.sendPush(this);

3. Using callback

class MainActivity : AppCompatActivity(), FCMSender.ResponseListener{
   override fun onSuccess(response: String) {
        Log.d("onSuccess",response)
    }

    override fun onFailure(errorCode: Int,message: String) {
        Log.d("onFailure","ErrorCode::$errorCode")
    }
}

4 Handle notification data on Client side in FirebaseMessagingService

• Kotlin

class FireBasePush : FirebaseMessagingService() {
override fun onMessageReceived(remoteMessage: RemoteMessage) {
super.onMessageReceived(remoteMessage)

   val nData: Map<String,String> = remoteMessage.data
   Log.d("TAG","Remote msg::"+ndata.toString())
        val title= nData["title"]
        val message= nData["message"]
}}

• Java

public class FireBasePush extends FirebaseMessagingService{
    @Override
    public void onMessageReceived(@NonNull RemoteMessage remoteMessage) {
        super.onMessageReceived(remoteMessage);
        
         Map<String, String> ndata = remoteMessage.getData();
	 Log.d("TAG","Remote msg::"+ndata.toString());
         String title=nData.get("title");
         String message=nData.get("message");
}}   

Usages

Send to Single device

.toTokenOrTopic("user registration token")

Send to Multiple devices

.toMultipleTokens(listOfTokens)

Send to Group of devices

Subscribe a topic on client device and send push to that topic

FirebaseMessaging.getInstance().subscribeToTopic("/topics/testTopic2");

TimeToLive

This parameter specifies how long (in seconds) the message should be kept in FCM storage if the device is offline. The maximum time to live supported is 4 weeks, and the default value is 4 weeks.

• use cases:
  • Video chat incoming calls
  • Expiring invitation events
  • Calendar events

DryRun

This parameter, when set to true, allows developers to test a request without actually sending a message.

The default value is false.

Reference

https://firebase.google.com/docs/cloud-messaging/http-server-ref#table1