里面的tw是在react native中使用tailwind的第三方库
只求读者把样式看个大概，主要还是功能的实现
ScrollView的官方文档如下
https://reactnative.cn/docs/scrollview

import tw from 'twrnc'
import { View, Text, ScrollView, RefreshControl } from 'react-native'
import { useState, useEffect } from 'react'

const MyScrollView = ({ }) => {
    const [data, setData] = useState([]);
    const [refreshing, setRefreshing] = useState(false);

    const handleTopRefresh = () => {
        // 防抖
        if (refreshing === false) {
            setRefreshing(true);
            console.log("触发上拉刷新")
            setTimeout(() => {
                console.log("拿到新数据")
                setRefreshing(false);
            }, 1500);
        }
    };

    const handleBottomRefresh = (e) => {
        // 防抖
        if (refreshing === false) {
            const offsetY = e.nativeEvent.contentOffset.y; //滑动距离
            const contentSizeHeight = e.nativeEvent.contentSize.height; //scrollView contentSize高度
            const scrollHeight = e.nativeEvent.layoutMeasurement.height; //scrollView高度
            //似乎有时会有误差，比如滑到底部但是(755.9999771118164<756)，我的解决思路是取ceil
            if (Math.ceil(offsetY + scrollHeight) >= contentSizeHeight) {
                console.log("触发底部刷新")
                setRefreshing(true);
                setTimeout(() => {
                    console.log("拿到新数据")
                    setRefreshing(false);
                }, 1500);
            }
        }
    }

    useEffect(() => {
        const res = [];
        for (let i = 0; i < 19; i++) {
            res.push(i);
        }
        setData(res);
    }, [])

    return (
        <ScrollView
            refreshControl={
                <RefreshControl refreshing={refreshing} onRefresh={handleTopRefresh} />
            }
            onMomentumScrollEnd={handleBottomRefresh}
            style={tw`flex-1`}>
            <View style={tw`gap-1 `}>
                {data.map((item, idx) => (
                    <Text style={tw`text-center text-3xl bg-yellow-200`} key={idx}>{item}</Text>
                ))
                }
            </View>
        </ScrollView>
    )
}

export default MyScrollView;

演示动画注意看终端里的输出

顺便看到了一个Toast组件，直接拿来当做加载后的提示了
https://github.com/calintamas/react-native-toast-message/tree/main

秉持着不水短文章的做法，附加上我自己写的白屏加载组件
Modal应该是absolute的组件，所以这个组件放哪都行
这里我查资料的时候才知道官方有写好了加载动画组件

import tw from 'twrnc'
import { View, Modal, ActivityIndicator } from 'react-native'

const Loading = ({ visible = false }) => {
    return (
        <Modal visible={visible} transparent={true}>
            <View style={tw`bg-white opacity-80 h-full w-full items-center justify-center`}>
                <ActivityIndicator size="large" color="#0000ff" />
            </View>
        </Modal>
    )
}

export default Loading;