构建React Native Android遇Gradle报错：No variants found

问题详情 #

开发带后台定位追踪功能的React Native应用，使用mauron85/react-native-background-geolocation库，React Native版本为0.67.3。构建Android应用时Gradle抛出错误：

No variants found for ':mauron85_react-native-background-geolocation'. Check build files to ensure at least one variant exists.

项目根目录build.gradle配置如下：

buildscript {
ext {
    buildToolsVersion = "30.0.2"
    minSdkVersion = 21
    compileSdkVersion = 33
    targetSdkVersion = 33
    supportLibVersion = "28.0.0"
    googlePlayServicesVersion = "11+"
    ndkVersion = "21.4.7075529"
    kotlin_version = "1.6.0" // Update this to your version
}
repositories {
    google()
    mavenCentral()
}
dependencies {
    classpath("com.android.tools.build:gradle:4.2.2")
    classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version")
    // NOTE: Do not place your application dependencies here; they belong
    // in the individual module build.gradle files
}
}

解决方案 #

• 锁定兼容的库版本：该库部分版本与RN 0.67.x存在兼容性问题，在package.json中指定适配版本，比如：

  "react-native-background-geolocation": "^0.6.3"
  

  执行npm install或yarn install重新安装依赖。

• 升级Gradle与Kotlin版本：当前Gradle 4.2.2和Kotlin 1.6.0可能无法匹配库的构建要求，修改buildscript配置：

  buildscript {
  ext {
      // 保留原有其他配置
      kotlin_version = "1.7.10"
  }
  repositories {
      google()
      mavenCentral()
  }
  dependencies {
      classpath("com.android.tools.build:gradle:7.0.4")
      classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version")
  }
  }
  

• 清理构建缓存：执行以下命令清除缓存，避免缓存导致的异常：

  cd android && ./gradlew clean
  cd .. && npx react-native clean
  

• 统一子项目构建配置：在项目根目录build.gradle中添加子项目配置，强制库的构建参数与项目保持一致：

  subprojects {
      afterEvaluate { project ->
          if (project.name.contains('react-native-background-geolocation')) {
              android {
                  compileSdkVersion rootProject.ext.compileSdkVersion
                  minSdkVersion rootProject.ext.minSdkVersion
                  targetSdkVersion rootProject.ext.targetSdkVersion
              }
          }
      }
  }
  

内容的提问来源于stack exchange，提问作者Mohammed Tawfik