报错信息:
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.
问题原因:
find . -name '*.gradle' -exec grep -H "\.+" {} \;
在node_modules/@react-native-community/netinfo/android/build.gradle
以下代码段中找到:
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"
}
}
所以原因是react-native编译项目时会自动升级依赖SDK 30的androidx.core:core:1.7.0-alpha01
。
解决方法:
通过 build.gradle 中的 androidXCore 指定 android 核心版本,如下
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"
}
或者
可以通过在 build.gradle 文件中添加以下行来修复它:
configurations.all {
resolutionStrategy { force 'androidx.core:core-ktx:1.6.0 }
}
相关文档:https://docs.gradle.org/current/dsl/org.gradle.api.artifacts.ResolutionStrategy.html