javascript - 运行时出错 `react-native run-android`

Question

在运行我的 react native 代码时 react-native run-android低于错误。它工作正常。但是在从 git 和 npm ci 获得新的拉动之后并且在我运行之后出现此错误。

error Failed to install the app. Make sure you have the Android development environment set up: https://reactnative.dev/docs/environment-setup.
Error: Command failed: gradlew.bat app:installDebug -PreactNativeDevServerPort=8081

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:checkDebugAarMetadata'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.CheckAarMetadataWorkAction
   > The minCompileSdk (30) specified in a
     dependency's AAR metadata (META-INF/com/android/build/gradle/aar-metadata.properties)
     is greater than this module's compileSdkVersion (android-29).
     Dependency: androidx.core:core:1.7.0-alpha01.
     AAR metadata file: C:\Users\gauraab\.gradle\caches\transforms-2\files-2.1\9e02d64f5889006a671d0a7165c73e72\core-1.7.0-alpha01\META-INF\com\android\build\gradle\aar-metadata.properties.

Answer 1

正如一些人所提到的，问题在于 RN 构建自动“升级”到 androidx.core:core:1.7.0-alpha01，这取决于 SDK 版本 30。
修复
修复只是在 build.gradle 中通过 androidXCore 指定 android 核心版本

buildscript {
    ext {
        buildToolsVersion = "29.0.3"
        minSdkVersion = 23
        compileSdkVersion = 29
        targetSdkVersion = 29
        ndkVersion = "20.1.5948944"
        kotlin_version = "1.5.0"
        androidXCore = "1.5.0"
    }

我是怎么想出来的
弄清楚这一点很痛苦。我 grepped 的 gradle 文件会像这样自动升级包

find . -name '*.gradle' -exec grep -H "\.+" {} \;

并在 node_modules/@react-native-community/netinfo/android/build.gradle 中找到以下 fragment

def androidXCore = getExtOrInitialValue('androidXCore', null)
  if (supportLibVersion && androidXVersion == null && androidXCore == null) {
    implementation "com.android.support:appcompat-v7:$supportLibVersion"
  } else {
    def defaultAndroidXVersion = "1.+"
    if (androidXCore == null) {
      androidXCore = androidXVersion == null ? defaultAndroidXVersion : androidXVersion
    }
    implementation "androidx.core:core:$androidXCore"
  }
}