Reactjs 反应本机错误-未定义不是一个函数(计算';(0"reactnavigation.switchnavigator)';)
我收到此错误:undefined不是函数(正在计算“(0\u reactnavigation.switchnavigator)”) 我正在使用以下链接构建React本机模板: 这是我的App.js文件:Reactjs 反应本机错误-未定义不是一个函数(计算';(0"reactnavigation.switchnavigator)';),reactjs,react-native,Reactjs,React Native,我收到此错误:undefined不是函数(正在计算“(0\u reactnavigation.switchnavigator)”) 我正在使用以下链接构建React本机模板: 这是我的App.js文件: import React from 'react' import { StyleSheet, Platform, Image, Text, View } from 'react-native' import { SwitchNavigator } from 'react-navigation'
import React from 'react'
import { StyleSheet, Platform, Image, Text, View } from 'react-native'
import { SwitchNavigator } from 'react-navigation'
// import the different screens
import Loading from './Loading'
import SignUp from './SignUp'
import Login from './Login'
import Main from './Main'
// create our app's navigation stack
const App = SwitchNavigator(
{
Loading,
SignUp,
Login,
Main
},
{
initialRouteName: 'Loading'
}
)
export default App
mypackage.json文件显示:
"dependencies": {
"react": "16.6.3",
"react-native": "0.58.0-rc.2",
"react-native-firebase": "^5.2.0",
"react-navigation": "^3.3.2"
}
如果不亲自设置代码,就不能100%确定,但是看起来react navigator可能已经稍微改变了API。尝试导入并使用createSwitchNavigator()而不是SwitchNavigator(),并在此处查看有关配置的更多文档: 编辑以将代码放在此处,这样您就不必浏览以下链接: 将导入从反应导航更改为:
import { createSwitchNavigator, createAppContainer } from 'react-navigation';
将switchNavigator构造函数调用更改为:
export default createAppContainer(createSwitchNavigator({
Loading,
SignUp,
Login,
Main
},
{
initialRouteName: 'Loading'
}));
这是文档中推荐的设置,见,每个路线都是StackNavigator。我不确定你是不是这样设置的,但我只想看看这个例子,看看新部件是如何设置的。阅读Do react navigation的文档。这里是。像这样改变
import React from 'react'
import { StyleSheet, Platform, Image, Text, View } from 'react-native'
import { createSwitchNavigator } from 'react-navigation' /////change here
// import the different screens
import Loading from './Loading'
import SignUp from './SignUp'
import Login from './Login'
import Main from './Main'
// create our app's navigation stack
const App = createSwitchNavigator ( ///////// change here
{
Loading,
SignUp,
Login,
Main
},
{
initialRouteName: 'Loading'
}
)
export default App
当我改用createSwitchNavigator()时,出现了一个新的错误-找不到变量:createSwitchNavigator您是否将其添加到从react navigation导入中?e、 g.
从“反应导航”导入{createSwitchNavigator}