title: How can I focus the last item of a listView in flutter
body: <p>I'm trying to make my listview always focus on the last element in a chat, but I don't know how to do it, I appreciate if someone can help me</p>
  <pre><code>Widget ChatMessageList(){
      return StreamBuilder(
        stream: chatMessageStream,
        builder: (context, snapshot){
          return snapshot.hasData ? ListView.builder(
            controller: _scrollController,
            itemCount: snapshot.data.documents.length,
            itemBuilder: (context, index){
              return MessageTile(snapshot.data.documents[index].data()['message'],
                  snapshot.data.documents[index].data()['sendBy'] == userSnapshop.uid);
            }
          ) : Container();
        },
      );
    }
  </code></pre>