future_builder.dart

return new FutureBuilder<SavedModel>(
        future: getDataFromSP(),
        builder: (context, snapshot) {
          if (snapshot.hasData) {
            SavedModel model = snapshot.data;
            return new Column(
              mainAxisAlignment: MainAxisAlignment.start,
              crossAxisAlignment: CrossAxisAlignment.stretch,
              children: <Widget>[
                new Text('Vegetable Name: $model.vegetables'),
                new Text('Vegetable Name: $model.fruits'),
                new Text('Vegetable Name: $model.flowers'),
              ],
            );
          } else if (snapshot.hasError) {
            return new Text("${snapshot.error}");
          }
          return new CircularProgressIndicator();
        });