模块 AppRegistry 不是已注册的可调用模块,并且无法找到变量:常量 [英] Module AppRegistry is not a registered callable module and Cant find variable: Constants
问题描述
我正在尝试使用 expo android 应用程序构建一个简单的反应本机应用程序,但我总是收到这 2 个错误日志 - 模块 AppRegistry 不是注册的可调用模块并且无法找到变量:常量.
I am trying to build a simple react native app by using expo android app but I am getting these 2 error log always - Module AppRegistry is not a registered callable module and Cant find variable: Constants.
import React, { Component } from "react";
import { StyleSheet, Text, View, Image } from "react-native";
export default class App extends Component {
render() {
return (
<View style={{ flex: 1, justifyContent: "center", alignItems: "center" }}>
<Text>Hello, world!</Text>
</View>
);
}
}
我在笔记本电脑上使用移动热点.
I am using my mobile hotspot in my laptop.
推荐答案
我参考这个链接写了答案.
I wrote the answer by referring to this link.
cd android
sudo ./gradlew clean
- 然后回到工作目录运行
react-native run-android
你也应该在升级后重新启动你的 npm.
you should restart your npm too after that upgrade.
和
删除程序中的Constant用法.
delete the Constant usage in the program.
import android.provider.SyncStateContract.Constants.ConstantName
这将导致找不到常量错误消失.
This will cause the Can not find Constants error to disappear.
希望这能解决你的问题.
I hope this will solve your problem.
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