Device group messaging allows you to add multiple devices to a single group. This is similar to topic messaging, but includes authentication to ensure that group membership is managed only by your servers. Device group messaging differs from topic messaging in that it involves managing device groups from your servers instead of directly within your application. The maximum number of members allowed for a notification key is Obtain registration tokens for each device you want to add to the group.
You can create notification keys on the app server or on Android client apps. Basic management of device groups — creating and removing groups, and adding or removing devices — is usually performed via the app server.
See the legacy HTTP protocol reference for a list of supported keys. Optionally, Android client apps can manage device groups from the client side. To create a device group, send a POST request that provides a name for the group, and a list of registration tokens for the devices. This ensures that messages only go to the intended target app.
For each GET request for a given notification key name, the server returns a unique encoded string. To add or remove devices from an existing group, send a POST request with the operation parameter set to add or removeand provide the registration tokens for addition or removal. For example, to add a device with the registration ID 51 to appUser-Chris, you would send this request:.
Sending messages to a device group is very similar to sending messages to an individual device.
Set the to parameter to the unique notification key for the device group. See Message types for details on payload support. The message was successfully sent to 1 of the registration tokens only. The response message lists the registration tokens that failed to receive the message:.
If the server attempts to send a message to a device group that has no members, the response looks like the following, with 0 success and 0 failure:. When FCM connection server fails to deliver to all devices in the group. App server will receive a nack response. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.
For details, see the Google Developers Site Policies. Overview Guides Reference Samples Libraries. Guides Get started with Firebase. Add Firebase to an app. Add Firebase to a game.
Use Firebase with a framework. Manage your Firebase projects.Firebase gives you functionality like analytics, databases, messaging and crash reporting so you can move quickly and focus on your users. Firebase products work great individually but share data and insights, so they work even better together.
Prioritize and fix issues with powerful, realtime crash reporting. Distribute pre-release versions of your app to your trusted testers. Before releasing a new feature, test it on a subset of your user base to see how it works and how they respond. Give users a simple, secure way to sign into your app, then monitor the onboarding process and find ways to improve it.
Implement a user-friendly chat feature, so that your users can chat with each other in realtime without leaving your app.
Real Time Android Chat Application using Firebase Tutorial
Build truly serverless apps with new data storage locations, lower prices, improved usage tracking, and more. Send feedback. Build apps fast, without managing infrastructure Firebase gives you functionality like analytics, databases, messaging and crash reporting so you can move quickly and focus on your users. Backed by Google, trusted by top apps Firebase is built on Google infrastructure and scales automatically, for even the largest apps.
One platform, with products that work better together Firebase products work great individually but share data and insights, so they work even better together. Cloud Firestore Store and sync app data at global scale.
Cloud Functions Run mobile backend code without managing servers. Authentication Authenticate users simply and securely. Hosting Deliver web app assets with speed and security. Cloud Storage Store and serve files at Google scale. Realtime Database Store and sync app data in milliseconds.
Learn more. Crashlytics Prioritize and fix issues with powerful, realtime crash reporting. Performance Monitoring Gain insight into your app's performance. Test Lab Test your app on devices hosted by Google. Google Analytics Get free and unlimited app analytics.
Predictions Smart user segmentation based on predicted behavior. Cloud Messaging Send targeted messages and notifications. Remote Config Modify your app without deploying a new version.
Dynamic Links Drive growth by using deep links with attribution.
Building a Real-Time Chat App with React and Firebase
Resize Images. Translate Text. Sync with Mailchimp. Trigger Email.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. This is the source code for the Firebase FriendlyChat codelab. To get started, open the codelab instructions:. Skip to content.
Real Time Android Chat Application using Firebase Tutorial
How to make contributions? You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Update issue templates. May 28, Auto-update dependencies. Apr 14, Dec 6, Fix link to Firebase Codelab on Github. Oct 28, OS license fixes.
Apr 11, May 22, It seems like every major app out there has a chat feature — and yours should be no different! This Firebase tutorial will show you how. However, creating a chat tool can seem like a daunting task. Use the Download Materials button at the top or bottom of this tutorial to download the starter project.
To get you started the project contains a simple dummy login screen, where the credentials are saved to User Defaults. The starter project has a few helper classes that handle sending data to Firebase and saving data to User Defaults.
Feel free to browse the starter project a bit to get familiar with the code. This may take a few minutes, but once the packages have installed, open RWRC. Head to the Firebase signup sitecreate an account, and then create a new Firebase project.
In Xcodeclick on the target and change the Bundle Identifier to any value you like, and select a Team in the Signing section. Firebase lets users log in through email or social accounts, but it can also authenticate users anonymously, giving you a unique identifier for a user without knowing any information about them.
Open LoginViewController. To log in to chat, the app will need to authenticate using the Firebase authentication service. Add the following code to the bottom of signIn :. That line of code from the FirebaseAuth framework will post the Notification. Once the notification is fired AppController will update the root view controller for you. Once the user signs in, they navigate to the ChannelsViewControllerwhose job it is to show the user a list of current channels and allow creating new channels.
The table has a single section to display all available channels. There is a toolbar at the bottom with a sign out button, a label displaying your name, and an add button.
Before you dive into sending messages in realtime, take a moment and think about the data structure first. Tradeoffs — we haz them!
Open ChatViewController. These properties are similar to those added to the channels view controller. The messages array is the data model and the listener handles clean up. Now you can start configuring the data source.
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I would like to make a chat using Firebase. I need to display for each users the list of group they belong to and also for each group all the members.
Because of how Firebase is designed, and in order to have acceptable performance, I am think making a list of all the groups containing the list of members, and for each users, an entry with all the group they belong too. If so, my second question is how can I atomically add or removed a user, i.
The data model you have proposed is consistent with recommendations for firebase.
A more detailed explanation is outlined in best way to structure data in firebase. Firebase provides. You may chain multiple transactions to ensure data consistency. You may also use onComplete callback function. For detailed explanation refer to firebase transaction. I am using this same approach to keep multiple message counts up to date for a dashboard display. Learn more. How to store users and groups for a chat using Firebase Ask Question.
Asked 4 years, 11 months ago. Active 4 years, 11 months ago.
Subscribe to RSS
Viewed 5k times. My first question is, is it the right approach? Can you please post your data model?Welcome to the Friendly Chat codelab. In this codelab, you'll learn how to use the Firebase platform to create a chat app on Android.
You should now have the android-start project open in Android Studio. If you see a warning about a google-services. It will be added in the next step. After the file is downloaded you can Skip the next steps shown in the console they've already been done for you in the build-android-start project. The google-services plugin uses the google-services.
The following line should already be added to the end of the build. To be sure that all dependencies are available to your app, you should sync your project with gradle files at this point.
Now that you have imported the project into Android Studio and configured the google-services plugin with your JSON file, you are ready to run the app for the first time. Connect your Android device, and click Run in the Android Studio toolbar. The app should launch on your device. At this point, you should see an empty message list, and sending and receiving messages will not work. In the next section, you authenticate users so they can use Friendly Chat. Go to your project in the Firebase console and select Database.
Select the Realtime Database option not Cloud Firestore. If prompted for security rules, with choices to start in either test mode or locked modechoose locked mode. Once the default rules are established, select the Rules tab and update the rules configuration with the following:. For more information on how this works including documentation on the "auth" variable see the Firebase security documentation. Before your application can access the Firebase Authentication APIs on behalf of your users, you will have to enable it.
The firebase-auth SDK allows easy management of authenticated users of your application. Now let's modify MainActivity. Add the following to the onCreate method after mUsername has been initialized:. Now we have all of the logic in place to send the user to the sign-in screen when necessary. Next we need to implement the sign-in screen to properly authenticate users. Open the file SignInActivity. Here a simple Sign-In button is used to initiate authentication.
In this step you will implement the logic to Sign-In with Google, and then use that Google account to authenticate with Firebase. Then, edit the onCreate method to initialize Firebase in the same way you did in MainActivity :. Next, initiate signing in with Google. Update SignInActivity 's onClick method to look like this:.
If the result of the Google Sign-In was successful, use the account to authenticate with Firebase. Add the required firebaseAuthWithGoogle method to authenticate with the signed in Google account:. That's it! You've implemented authentication using Google as an Identity Provider in just a few method calls and without needing to manage any server-side configuration. Run the app on your device. You should be immediately sent to the sign-in screen.In this codelab, you'll learn how to use Firebase to easily create web applications by implementing and deploying a chat client using Firebase products and services.
Clone the codelab's GitHub repository from the command line:. Alternatively, if you do not have git installed, you can download the repository as a ZIP file. The application that we're going to build uses Firebase products that are available for web apps:. Some of these products need special configuration or need to be enabled using the Firebase console. To allow users to sign in to the web app with their Google accounts, we'll use the Google sign-in method.
The web app uses Cloud Firestore to save chat messages and receive new chat messages. Test mode ensures that we can freely write to the database during development. We'll make our database more secure later on in this codelab. With the default security rules, any authenticated user can write anything to Cloud Storage.
We'll make our storage more secure later in this codelab. The Firebase command-line interface CLI allows you to use Firebase Hosting to serve your web app locally, as well as to deploy your web app to your Firebase project. We've set up the web app template to pull your app's configuration for Firebase Hosting from your app's local directory the repository that you cloned earlier in the codelab.
But to pull the configuration, we need to associate your app with your Firebase project. An alias is useful if you have multiple environments production, staging, etc. However, for this codelab, let's just use the alias of default. Now that you have imported and configured your project, you are ready to run the web app for the first time. We're using the Firebase Hosting emulator to serve our app locally.
All the files that are located under the public subdirectory are served. The app cannot do anything right now, but with your help it will soon! We've only laid out the UI for you so far. We need to import the Firebase SDK into the app. There are multiple ways to do this as described in our documentation.
For instance, you can import the library from our CDN. Or you can install it locally using npm, then package it in your app if you're using Browserify.
Since we're using Firebase Hosting to serve our app, we're going to import the local URLs that are in the file index. For this codelab, we've already added the following lines for you at the bottom of the index. In your future apps, make sure that you're only importing the parts of Firebase that you need, to shorten the load time of your app. Since we're using Firebase Hosting, you can import a special script that will do this configuration for you.
This script contains your Firebase project configuration based upon the Firebase project that you specified earlier when you ran firebase use --add.
Feel free to inspect the file init.