【发布时间】：2020-02-28 02:12:30
【问题描述】：
所以我是响应式的新手，正在努力学习开发应用程序。我试图学习如何使用 React Navigation，所以我安装了它和依赖项，但是当我尝试使用它时，我遇到了一些错误。第一个出现在cmd中运行npm start后：
Some of your project's dependencies are not compatible with currently installed expo package version:
- react-native-screens - expected version range: 2.0.0-alpha.12 - actual version installed: ^2.0.0-alpha.12
Your project may not work correctly until you install the correct versions of the packages.
To install the correct versions of these packages, please run: expo install [package-name ...]
然后当我在 Android sim 中启动应用程序时，我得到了这个：
Unable to resolve "@react-navigation/drawer" from "App.js"
Failed building JavaScript bundle.
这是我的代码：
import React from 'react';
import { StyleSheet, Text, View, Platform, Image, ImageBackground } from 'react-native';
import {Button} from 'native-base';
import { render } from 'react-dom';
import Search from './src/search';
import Landing from './src/landing';
import {NavigationContainer} from '@react-navigation/native'
import {createDrawerNavigator} from '@react-navigation/drawer'
import {createStackNavigator} from '@react-navigation/stack'
import {createMaterialBottomTabNavigator} from '@react-navigation/material-bottom-tabs'
import {createMaterialTopTabNavigator} from '@react-navigation/material-top-tabs'
var myBackground = require('./assets/icons/landing.jpg');
const Drawer = createDrawerNavigator();
const Stack = createStackNavigator();
const MaterialBottomTabs = createMaterialBottomTabNavigator();
const MaterialTopTabs = createMaterialTopTabNavigator();
export default class App extends React.Component {
state = {
}
createHomeStack = () =>
<Stack.Navigator>
<Stack.Screen name="Feed"/>
</Stack.Navigator>
createTopTabs = () =>
{
return <MaterialTopTabs.Navigator>
<MaterialTopTabs.Screen name="Tab1" Component={Landing}/>
</MaterialTopTabs.Navigator>
}
render() {
return (
<View style={styles.container}>
<NavigationContainer>
<Drawer.Navigator>
<Drawer.Screen name="Home" Component="Landing"/>
<Drawer.Screen name="Search" Component="Search"/>
<Drawer.Screen name="Home"/>
</Drawer.Navigator>
</NavigationContainer>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
marginTop: Platform.OS === "android" ? 50 : 0
},
});
有人知道我为什么会收到这些错误吗？在开始之前，我重新安装了 React Nav。 提前致谢！
包.json：
{
"main": "node_modules/expo/AppEntry.js",
"scripts": {
"start": "expo start",
"android": "expo start --android",
"ios": "expo start --ios",
"web": "expo start --web",
"eject": "expo eject"
},
"dependencies": {
"@react-native-community/masked-view": "^0.1.5",
"@react-navigation/native": "^5.0.8",
"expo": "~36.0.0",
"native-base": "^2.13.8",
"react": "~16.9.0",
"react-dom": "~16.9.0",
"react-native": "https://github.com/expo/react-native/archive/sdk-36.0.0.tar.gz",
"react-native-gesture-handler": "^1.5.6",
"react-native-reanimated": "^1.4.0",
"react-native-safe-area-context": "^0.6.0",
"react-native-screens": "^2.0.0-alpha.12",
"react-native-web": "~0.11.7"
},
"devDependencies": {
"@babel/core": "^7.0.0",
"babel-preset-expo": "~8.0.0"
},
"private": true
}
【问题讨论】：
-
在此处附加您的 package.json 代码
-
评论太长，所以我在编辑中添加了它
-
就像在您的 package.json 中一样，您还没有将抽屉导航安装到您的项目中。这就是为什么
标签： javascript reactjs react-native navigation react-navigation