how to add data on firebase firestore in kotlin android

To add data on firestore, we should work on some thing

1. first we should get the Instance of Firestore to connect our data to firestore.

private var db:FirebaseFirestore = FirebaseFirestore.getInstance()

2. Our variable is db , whenever we want to get reference of our firestore then use this variable db.

val add = HashMap<String,Any>()

3. Than add HashMap<key, value> to add our data.

add["firstName"] = "your first name"
add["lastName"] = "your last name"
add["email"] = "your email id"
add["password"] = "your hide password"

4. In this add[“your key”] = “your value”

db.collection("users")
    .add(add)
    .addOnSuccessListener {
        Toast.makeText(this,"Data added ",Toast.LENGTH_LONG).show()
    }
    .addOnFailureListener {
        Toast.makeText(this," Data not added ",Toast.LENGTH_LONG).show()
    }

5. In the collection(“ your collection name”) ,than add(your data variable name),

6. After than you can see your data in your Firebase Firestore

Hope it will work

Thanks