mitchtabian

//RecyclerView
compile 'com.android.support:recyclerview-v7:26.+'

//Firebase Authentication
compile 'com.google.firebase:firebase-auth:11.4.0'

//Firebase Realtime Database
compile 'com.google.firebase:firebase-database:11.4.0'

//Firebase Cloud Messaging

mitchtabian

//url
https://fcm.googleapis.com/fcm/send

//headers
Authorization: <Your Server Key>
Content-Type: application/json

//body
{
  "to" : "< user FCM token >",

mitchtabian

private void sendRegistrationToServer(String token) {
        Log.d(TAG, "sendRegistrationToServer: sending token to server: " + token);
        DatabaseReference reference = FirebaseDatabase.getInstance().getReference();
        reference.child(getString(R.string.dbnode_users))
                .child(FirebaseAuth.getInstance().getCurrentUser().getUid())
                .child(getString(R.string.field_messaging_token))
                .setValue(token);
    }

mitchtabian

public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService {
    private static final String TAG = "MyFirebaseIIDService";

    /**
     * Called if InstanceID token is updated. This may occur if the security of
     * the previous token had been compromised. Note that this is called when the InstanceID token
     * is initially generated so this is where you would retrieve the token.
     */
    @Override
    public void onTokenRefresh() {

mitchtabian

<application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        

        <service

mitchtabian

public class MyFirebaseMessagingService extends FirebaseMessagingService {

    private static final String TAG = "MyFirebaseMsgService";
	private static final int BROADCAST_NOTIFICATION_ID = 1;

    @Override
    public void onDeletedMessages() {
        super.onDeletedMessages();
    }

mitchtabian

<application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

        <service
            android:name=".utility.MyFirebaseMessagingService">

mitchtabian

let functions = require('firebase-functions');

let admin = require('firebase-admin');

admin.initializeApp(functions.config().firebase);

exports.sendNotification = functions.database.ref('/messages/{userId}/{messageId}').onWrite(event => {
	
	//get the userId of the person receiving the notification because we need to get their token
	const receiverId = event.params.userId;

mitchtabian

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.3.3'
        classpath 'com.google.gms:google-services:3.1.0'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files

mitchtabian

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion "27.0.1"
    defaultConfig {
        applicationId "codingwithmitch.com.firebasedirectmessage"
        minSdkVersion 16
        targetSdkVersion 26
        versionCode 1