React Native FlatList闪烁延迟加载其他数据

Question

我有一个使用钩子实现的相当基本的FlatList组件。该列表仅从随机用户API加载数据，并通过无限滚动延迟加载其他数据。我遇到的唯一视觉问题是，当我将新数据与当前数据合并时，附加的新数据在完全渲染之前会非常短暂地闪烁。不知道是什么原因造成的。

Expo Snack

const useRestApi = (url) => {
  const [ data, setPeople ] = useState([]);
  const [ page, setPage ] = useState(1);
  const [ results, setResults ] = useState(20);
  const [ loading, setLoading ] = useState(false);

  useEffect(() => {

    const fetchPeople = async () => {
      setLoading(true);

      const response = await fetch(`${url}&page=${page}&results=${results}`);
      const json = await response.json();

      if(page !== 1)
        setPeople([...data, ...json.results]);
      else
        setPeople(json.results);
      setLoading(false);
    }

    fetchPeople();

  }, [page]);

  return [{data, loading, page}, setPage, setResults];
}

const App: () => React$Node = () => {

  const [{ data: people, loading, page }, setPage, setResults] = useRestApi(`https://randomuser.me/api?&seed=ieee`);

  return (
    <>
      <StatusBar barStyle="dark-content" />
      <SafeAreaView>
        <FlatList 
          data={people}
          onEndReachedThreshold={0.2}
          keyExtractor={(item, index) => index.toString()} 
          renderItem={({item, index}) => (
            <View key={index} style={styles.listItem}>
              <Text style={styles.listItemHeader}>{item.name.first} {item.name.last}</Text>
              <Text style={styles.listItemSubHeader}>{item.location.country}</Text>
              <Text style={styles.listItemBody}>{item.location.street.number} {item.location.street.name}</Text>
              <Text style={styles.listItemBody}>{item.location.city} {item.location.state} {item.location.postcode}</Text>
            </View>
          )}
          refreshing={loading}
          onRefresh={() => {setResults(20); setPage(1);}}
          onEndReached={() => {setResults(5); setPage(page + 1);}}
          ItemSeparatorComponent={() => ItemSeparatorComponent}
          ListFooterComponent={() => loading ? ListFooterComponent : null}
        />
      </SafeAreaView>
    </>
  );
};