之后使用删除隐藏的`.gradle`文件夹
在构建发布包之前，我遵循React Native0.67.4指令生成密钥并对配置进行签名。该应用程序在Android模拟器(Android Studio2120.1.1 Patch2(中运行良好。但在构建发布包时，./gradlew assembleRelease和./gradlew bundleRelease都有如下错误：
任务：app:signReleaseBundle失败
w: Detected multiple Kotlin daemon sessions at build/kotlin/sessions
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:signReleaseBundle'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.FinalizeBundleTask$BundleToolRunnable
> java.lang.NullPointerException (no error message)
在帖子中尝试了以下内容：
- 删除了下的所有内容/gradle与
yarn run android - /gradlew多次清洁
安卓工作室2021.1.1 Patch2，Gradle React Native插件版本7.2.1/(gradle 7.4.1)。
以下是package.json:的一部分
"dependencies": {
"@ethersproject/shims": "^5.6.0",
"@react-native-community/toolbar-android": "^0.2.1",
"@react-native-masked-view/masked-view": "^0.2.6",
"@react-native-picker/picker": "^2.4.0",
"@react-navigation/native": "^6.0.8",
"@react-navigation/stack": "^6.1.1",
"crypto-js": "^4.1.1",
"ethers": "^5.6.1",
"react": "17.0.2",
"react-native": "0.67.4",
"react-native-blob-util": "^0.14.1",
"react-native-confirmation-code-field": "^7.3.0",
"react-native-device-info": "^8.5.1",
"react-native-easy-grid": "^0.2.2",
"react-native-elements": "^3.4.2",
"react-native-encrypted-storage": "^4.0.2",
"react-native-flash-message": "^0.2.1",
"react-native-gesture-handler": "^2.3.2",
"react-native-get-random-values": "^1.7.2",
"react-native-gifted-chat": "^0.16.3",
"react-native-image-picker": "^4.7.3",
"react-native-loading-spinner-overlay": "^3.0.0",
"react-native-modal": "^13.0.1",
"react-native-reanimated": "^2.5.0",
"react-native-redash": "^16.2.3",
"react-native-responsive-screen": "^1.4.2",
"react-native-safe-area-context": "^4.2.2",
"react-native-screens": "^3.13.1",
"react-native-vector-icons": "^9.1.0",
"rn-alioss": "^0.2.5",
"socket.io-client": "^4.4.1"
},
"devDependencies": {
"@babel/core": "^7.12.9",
"@babel/runtime": "^7.12.5",
"@react-native-community/eslint-config": "^2.0.0",
"babel-jest": "^26.6.3",
"eslint": "7.14.0",
"jest": "^26.6.3",
"metro-react-native-babel-preset": "^0.66.2",
"react-test-renderer": "17.0.2"
},
我也在到处寻找相同问题的解决方案。最后，在花了几个小时之后，我找到了一个最终对我有效的解决方案，我认为这也会解决你的问题。
如错误日志所示，我们确实有多个kotlin后台进程会话在后台运行。
你可以自己检查一下。转到android文件夹并输入
/gradlew—状态
它将显示所有正在运行的守护进程以及进程id及其状态。目前，我们只能阻止他们。
/gradlew—停止
现在使用终端命令导航到您的home目录
cd ~
之后使用删除隐藏的`.gradle`文件夹
sudo rm -rf .gradle
现在您已经删除了所有守护进程缓存，可以进行新的安装了。
卸下node_modules并重新安装包装
为了安全起见，导航到android文件夹并执行./gradlew clean
现在构建您的react原生项目！