未将本机程序安装在模拟器上。

Question

我在Windows 10中创建了一个带有的新项目，但它没有使用命令运行。

我将总结一下我所做的工作，因为我认为所有的程序都已安装：

installation.

• React installation.

• In

1. I安装npm和node.
2. Java环境系统，这些都被设置为.

ANDROID_HOME ---> C:\Users\IHC\AppData\Local\Android\Sdk
JAVA_HOME--> C:\Program Files\Java\jdk-۱۴.۰.۱
path--> C:\Users\IHC\AppData\Local\Android\Sdk\tools
C:\Users\IHC\AppData\Local\Android\Sdk\platform-tools
C:\Program Files\nodejs\
C:\Users\IHC\AppData\Local\Android\Sdk
C:\Users\IHC\AppData\Local\Android\Sdk\emulator
C:\Program Files\Java\jdk-۱۴.۰.۱\bin 

错误是：

info Starting JS server...
info Installing the app...
Starting a Gradle Daemon, 2 incompatible and 1 stopped Daemons could not be reused, use --status for details
java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.vmplugin.v7.Java7
        at org.codehaus.groovy.vmplugin.VMPluginFactory.<clinit>(VMPluginFactory.java:43)
     .
.
.
.

        at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
        at java.base/java.lang.Thread.run(Thread.java:832)

FAILURE: Build failed with an exception.

* What went wrong:
Could not initialize class org.codehaus.groovy.reflection.ReflectionCache

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 44s

error Failed to install the app. Make sure you have the Android development environment set up: https://reactnative.dev/docs/environment-setup. Run CLI with --verbose flag for more details.
Error: Command failed: gradlew.bat app:installDebug -PreactNativeDevServerPort=8081
java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.vmplugin.v7.Java7
enter code here

Answer 1

您能检查一下安装的android版本吗?最新版本请参考https://www.npmjs.com/package/@react-native-community/cli-platform-android并重试。

Answer 2

已经安装好了，我做了以下工作

jdk-8u261-windows-x64

1. remove jdk-۱۴.۱

1. 首先运行Oracle，然后运行Genymotion

在powershell中

--reset-cache

• npm

• npm启动--

1. -g -g运行-android