How to work with query in firebase with flutter?

Question

I want to create a query which contains all the documents in the free collection which have in the field list the value item2

Answer 1

Use this query in StreamBuilder and retrieve data through it.

stream: Firestore.instance.collection('free').snapshots()

In stream we can get all documents.

Finally we can get item by accessing first document.ie data[0].In the first document we will get ['list'] and in that list we will get the first item which is item 4.

snapshot.data[0]['list'][0]