项目结构

使用以下项目文件结构

app
   _layout.js
   index.js

顶部按钮

将/app/_layout.js恢复原状

import { Stack } from 'expo-router/stack';

export default function Layout() {
  return <Stack />;
}

修改/app/index.js

import { View, Text, Button, Image } from 'react-native';
import { Link, Stack } from 'expo-router';
import { useState } from 'react';


export default function Index() {
  const [count, setCount] = useState(0);

  return (
    <View style=...