class HomeScreen extends Component {

  state = { refreshing: false }

​

  _renderItem = ({ item }) => <ImageGrid item={item} />

​

  _handleRefresh = () => {

​

  };

​

  render() {

    const { data } = this.props;

    if (data.loading) {

      return (

        <Root>

          <Loading size="large" />

        </Root>

      )

    }

 return (

   <Root>

     <HomeHeader />

     <FlatList

       contentContainerStyle={{ alignSelf: 'stretch' }}

       data={data.getPosts}

       keyExtractor={item => item._id}

       renderItem={this._renderItem}

       numColumns={3}

       refreshing={this.state.refreshing}

       onRefresh={this._handleRefresh}

     />

   </Root>

  );

 }

}

​

export default graphql(GET_POSTS_QUERY)(HomeScreen);