Question

How to retrieve data from firebase realtime database in android

Answer 1

In order to retrieve data from Firebase Realtime Database in Android: Use DatabaseReference and addValueEventListener to fetch data asynchronously.

Step-by-step explanation:

To retrieve data from Firebase Realtime Database in Android, start by initializing Firebase in your app.

Use a DatabaseReference to specify the location of your data.

Employ addValueEventListener or addListenerForSingleValueEvent to fetch data asynchronously.

addValueEventListener provides real-time updates when the data changes, while addListenerForSingleValueEvent fetches data only once.

Inside the listener, handle onDataChange() to access the retrieved data.

Retrieve values by specifying the child node or iterating through DataSnapshot objects.

Ensure proper error handling using onCancelled().