在react本机中隐藏滚动上的标题不能按需要工作

import React, { useState } from 'react';
import { ScrollView, Text, View, TouchableOpacity } from 'react-native';

const App = () => {
  const [showTitle, setShowTitle] = useState(true);

  return (
    <View>
      {showTitle && <Text style={{ fontSize: 20, marginBottom: 10 }}>这是标题</Text>}
      <TouchableOpacity onPress={() => setShowTitle(!showTitle)}>
        <Text>切换标题显示</Text>
      </TouchableOpacity>
      <ScrollView>
        {/* 这里放置你的滚动内容 */}
        <Text>滚动内容...</Text>
      </ScrollView>
    </View>
  );
};

export default App;

import React, { useState } from 'react';
import { ScrollView, Text, View } from 'react-native';

const App = () => {
  const [scrollY, setScrollY] = useState(0);

  return (
    <View>
      {scrollY > 100 ? null : <Text style={{ fontSize: 20, marginBottom: 10 }}>这是标题</Text>}
      <ScrollView onScroll={event => setScrollY(event.nativeEvent.contentOffset.y)}>
        {/* 这里放置你的滚动内容 */}
        <Text>滚动内容...</Text>
      </ScrollView>
    </View>
  );
};

export default App;