app.js

export default class App extends Component {
  state = {
    data: data 
  }
    
  renderItem = ({item}) => {
   return (<View>
     <Image source={{uri: item.avatar}} style={styles.itemImage} />
   </View>)
  }
  
  render() {
    return (
      <View style={styles.container}>
        <FlatList  
          keyExtractor={(_, index) => index} 
          numColumns={numberGrid} data={this.state.data} 
          renderItem={this.renderItem} />
      </View>
    );
  }
}