Auto-increment a value in Firebase

Question

How do I auto increment a value stored in Firebase from an Android client?

Currently: I declare int id = 1. When I increment, I see the values 2, 3 etc.

Answer 1

A new feature is added to firestore to autoincrement values. As simple as

document("fitness_teams/Team_1").
  updateData(["step_counter" : FieldValue.increment(500)])

refer link: https://firebase.googleblog.com/2019/03/increment-server-side-cloud-firestore.html

Used below code in my project.

var firestore = Firestore.instance;
firestore.collection('student').document('attendance').updateData({'total_attendace': FieldValue.increment(1)});