How to query in a Flutter/FirebaseAnimatedList using buildArguments or anything else? (example please)

Question

I have a this Scaffold with body:

body: new Column(
        children: [
          new Flexible(
            child: new FirebaseAni         


        

Answer 1

If I am getting your question correctly, you are trying to query some data where ("Active" = true), then see the following example.

I have added a screenshot from my db to have more context on the way my data is structured and hopefully it will put you into perspective to implement something similar on your end.

In the previous example, I am doing the following query to only obtain contact of email set to "em1@gmail.com" while neglecting the others.

 @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(title: new Text("Firebase Example"),),
      body: new Column(
        children: [
          new Flexible(
            child: new FirebaseAnimatedList(
                query: FirebaseDatabase.instance
                    .reference().child("contacts")
                    .orderByChild("email")
                    .startAt("em1@gmail.com").endAt("em1@gmail.com"),
                padding: new EdgeInsets.all(8.0),
                reverse: false,
                itemBuilder: (_, DataSnapshot snapshot,
                    Animation animation, int x) {
                  return new ListTile(
                    subtitle: new Text(snapshot.value.toString()),
                  );
                }
            ),
          ),
        ],
      ),
    );
  }

Hope it helped.

P.S: As Chenna Reddy pointed out, you can replace startAt("em1@gmail.com").endAt("em1@gmail.com") by equalTo("em1@gmail.com")

startAt and endAt are useful when you need to limit your query to a certain range.

For more information.