Saving Data on Android

17
Chapter 17: Managing 
Data with Cloud Firestore
By Dean Djermanović
In the previous chapter, you learned the basics of Cloud Firestore. You learned what 
Firestore is, how it differs from Realtime database, and how it structures its data. In 
this chapter, you'll integrate Firestore into the app. You'll refactor the current 
WhatsUp
 app to use the Firestore as the backend. All of the functionality of 
WhatsUp
 app will remain the same. In the process, you'll learn how to add data to 
the Firestore, how to update and delete data, and how to use Firebase console to 
manage Firestore data.
GeTng started
You need to set up Firestore before you can start using it. If you followed along with 
Realtime database chapters, you have already created the project in the Firebase 
console. If you didn't, go back to the "Chapter 11: Firebase overview" and "Chapter 
12: Introduction toFirebase Realtime Database" to see how to create the project in 
the console and how to connect your app with Firebase.