flutter_codex_08.dart

body: StreamBuilder(
  stream: Firestore.instance
      .collection('feed')
      .where('email', isEqualTo: '[email protected]')
      .snapshots(),
  builder: (context, snapshot) {
    if (!snapshot.hasData) {
      return Text('Loading...');
    }
    return ListView.builder(
      itemCount: snapshot.data.documents.length,
      itemBuilder: (context, index) {
        return Container(
          height: 50,
          padding: EdgeInsets.only(
            left: 20,
          ),
          alignment: Alignment.centerLeft,
          color: index % 2 == 0 ? Colors.yellow[100] : Colors.white,
          child: Text(
            '${snapshot.data.documents[index]['message']}',
            style: TextStyle(
              fontSize: 20,
            ),
          ),
        );
      },
    );
  },
),