错误类型3.活动类{com.awesome_project/com.awesome_project.MainActivity}在本机(Android设备)中不存在 [英] Error type 3. Activity class {com.awesome_project/ com.awesome_project.MainActivity} does not exist in react native (Android device)

问题描述

我已经使用以下命令创建了项目.

I've created the project using the following command.

react-native init Awesome_Project

我已经使用以下命令启动了打包程序.

I've started the packager using the following command.

react-native start

我已经使用USB驱动器连接了Android手机.

I've connected my Android mobile using USB drive.

我打开了另一个命令提示符，并运行以下adb命令以确保仅连接了一个设备.

I've opened another command prompt and run the following adb command to make sure that only one device is connected.

adb devices

我已经使用以下命令启动了应用程序.

I've started the application using the following command.

react-native run-android

我遇到了以下错误.

open: Permission denied
open: Permission denied
Starting: Intent { com.awesome_project/.MainActivity }
Error type 3
Error: Activity class {com.awesome_project/ com.awesome_project.MainActivity} does not exist.

谢谢.

推荐答案

确保 android/app/build.gradle

defaultConfig {
        applicationId "WHATEVER_THIS_IS" 
}

需要匹配 android/app/src/main/java/com/app_name/MainActivity.java 第一行:

package WHATEVER_THIS_IS;

需要匹配 android/app/src/main/java/com/app_name/MainApplication.java 第一行:

package WHATEVER_THIS_IS;

需要匹配 android/app/src/main/AndroidManifest.xml 第一行:

package="WHATEVER_THIS_IS">

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