React Native ReferenceError：找不到变量：True

Question

不断收到“错误参考错误：找不到变量：真”的错误，但对我来说一切似乎都很好，请你帮我找出问题所在。这也是我的第一个 React Native 项目。

代码如下：

import React, { useState } from 'react'; import {   StyleSheet, TouchableHighlight, Dimensions, Text,   View, TouchableOpacity, SafeAreaView, Image,   Button, TouchableWithoutFeedback, ScrollView, TextInput, FlatList } from 'react-native'; import { createStackNavigator, createAppContainer } from 'react-navigation'; import TacoTruck from './tti.png'; import AntDesign from 'react-native-vector-icons/AntDesign'; import categoriesData from "./assets/data/categoriesData"; import Feather from 'react-native-vector-icons/Feather'; import colors from './assets/colors/colors';

const MenuPage = ({ 导航 }) => { const renderCategoriesItem = (item) => { 返回 （ 你好 ); };

return (
    <View style={styles.container}>
        <SafeAreaView>
            {/*Header*/}
       <View style={styles.headerWrapper}>
                <Image source={require('./assets/images/profile.png')}

style={styles.profileImage} />
导航.navigate('Main')}>

        {/*Titles*/}
        <View style={styles.titlesWrapper}>
            <Text style={styles.titlesSubtitle}>Food</Text>
            <Text style={styles.titlesTitle}>Delivery</Text>
        </View>

        {/*Search Bar*/}
        <View style={styles.searchBarWrapper}>
            <AntDesign name="search1" size={20} color={colors.vantaBlack} />
            <View style={styles.searchBar}>
                <Text styles={styles.searchText}>Search</Text>
            </View>
        </View>
              
        {/*Categories*/}
        <View style={styles.categoriesWrapper}>   
            <Text style={styles.categoriesTitle}>Categorles</Text>
            <View style={styles.categoriesListWrapper}>
                <FlatList
                    data={categoriesData}
                    renderItem={renderCategoriesItem}
                    keyExtractor={item => item.id}
                    horizontal={true}  

                />
            </View>      
        </View>
    </View>
); }

导出默认菜单页；

Answer 1

你不需要添加'={true}'，只需

<FlatList
  data={categoriesData}
  renderItem={renderCategoriesItem}
  keyExtractor={item => item.id}
  horizontal  
/>

Answer 2

Nvm 我在我选择的 categoriesData 文件中解决了它：是的，出于某种原因，我把它取下来了，它起作用了。