Is it possible for multiple android applications to access a single firebase backend. If no what is the alternative in such situation?
Yes, it is! a single firebase database can be access by multiple app.. provided each of your apps use the same authentication details. The Firebase documentation will be a big help. https://firebase.google.com/docs/ I have 2 of my app accessing 1 firebase database account, so, i am quite sure it will work for you my friend!
Yes, you only need to setup your Firebase object with the same url(db). Check the documentation for more. https://www.firebase.com/docs/android/guide/retrieving-data.html
Yes, it is possible for multiple applications to access the same Firebase Database. From Android Studio v2.2 onwards, you can directly link an app to a Firebase database via the Firebase Assistant. Here is how to do so:
With Android Studio 2.2 and upwards you can easily create and add apps to you Firebase project without leaving your work environment and no need to download google-services.json
From Android Studio go to Tools->Firebase and create, add apps to project of choice :)
Guide
In the firebase console you’ll be having the option to connect the firebase to corresponding platform and it’s configuration. You can use that to add same firebase project to any desired platform.
Yes, it is possible. Go to your firebase console. Select home tab. Click on Add App. Select Add firebase to your Android App. Provide the necessary details for the package name. Download the latest config file and add it to all the android apps connected to this firebase project.