How to Count the number of document in a particular collection in firestore flutter and display at Scaffold Text widget

user_15939217 0
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I want to display the no. of documents in collection in Realtime.[In image 4 document][1] [1]: https://i.stack.imgur.com/VLiDy.jpg

 countDocuments() async {
    QuerySnapshot _myDoc = await collectionReference.get();
    List myDocCount = _myDoc.docs;
    var totalStudent = myDocCount.length.toString();
    return print(totalStudent);
  }

In above code when I called countDocument() function in raised button or any button type it print the total document present in collection in DEBUG CONSOLE of VS code BUT I want to display this No. in inside of Scaffold's Text() widget. So, how I Can display.

google-cloud-firestore firebase dart flutter
2 Answers

Since this is an async operation, you can use a FutureBuilder to wrap the Text widget and use it in the Scaffold.

     FutureBuilder(
        future: collectionReference.get(),
        builder: (context, snapshot) {
           if (snapshot.hasData) {
             List myDocCount = snapshot.data.docs;
             var totalStudent = myDocCount.length.toString();
             return Text(totalStudent.toString());
           } else {
             return Center(child: CircularProgressIndicator());
           }
        },
      );
user_110391640

simply you can do like that text:Text("${totalStudent}"),

user_116422480
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