我正在学习为Android开发应用程序。特别是媒体播放器的工作方式。目标系统应该是用于汽车的android。因此，我已经从Google下载了示例UAMP应用程序，但不幸的是，它没有编译，它太旧了。因此，我决定重建一个项目并导入所有模块。对我来说重要的是了解它是如何工作的!无论如何，我已经在gradle和模块中导入了所有库，已经编译了该应用程序的汽车版本，并且收到以下消息:
*The given artifact contains a string literal with a package reference 'android.support.v4' that cannot be safely rewritten. Libraries using reflection such as annotation processors need to be updated manually to add support for androidx*.详细地，gradle解释了:
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':automotive:mergeDebugJavaResource'.
Could not resolve all files for configuration ':automotive:debugRuntimeClasspath'.
Failed to transform kotlin-android-extensions-1.3.41.jar (org.jetbrains.kotlin:kotlin-android-extensions:1.3.41) to match attributes {artifactType=android-java-res, org.gradle.category=library, org.gradle.libraryelements=jar, org.gradle.status=release, org.gradle.usage=java-runtime}.
> Execution failed for JetifyTransform: C:\Users\James Tiberius Kirk\.gradle\caches\modules-2\files-2.1\org.jetbrains.kotlin\kotlin-android-extensions\1.3.41\3bb1958b60435763b1299eb4e2dea5bea3bab2a3\kotlin-android-extensions-1.3.41.jar.
> Failed to transform 'C:\Users\James Tiberius Kirk\.gradle\caches\modules-2\files-2.1\org.jetbrains.kotlin\kotlin-android-extensions\1.3.41\3bb1958b60435763b1299eb4e2dea5bea3bab2a3\kotlin-android-extensions-1.3.41.jar' using Jetifier. Reason: AmbiguousStringJetifierException, message: The given artifact contains a string literal with a package reference 'android.support.v4' that cannot be safely rewritten. Libraries using reflection such as annotation processors need to be updated manually to add support for androidx.. (Run with --stacktrace for more details.)
This is a known exception, and Jetifier won't be able to jetify this library.
>好的，对不起我的英语不好，但是问题很复杂，我的英语还不够高级。汽车项目由三个分支组成:移动应用程序，汽车应用程序和一个共享分支。现在，我在汽车部门工作，其中包括共享分支。
我做的第一件事是检查是否可能一个或多个包含的库不是最新版本。据我了解，所有库都是最新版本，并且与androidx(我的目标系统)兼容，这里是Automotive分支中的包含库列表:
>
dependencies {
implementation fileTree(dir: "libs", include: ["*.jar"])
implementation "org.jetbrains.kotlin:kotlin-stdlib:1.3.72"
implementation "androidx.core:core-ktx:1.2.0"
implementation "androidx.constraintlayout:constraintlayout:1.1.3"
implementation "androidx.appcompat:appcompat:1.1.0"
implementation "androidx.lifecycle:lifecycle-extensions:2.2.0"
implementation "androidx.preference:preference:1.1.1"
androidTestImplementation "androidx.test.ext:junit:1.1.1"
androidTestImplementation "androidx.test.espresso:espresso-core:3.2.0"
implementation "com.google.android.exoplayer:extension-mediasession:2.11.4"
implementation "com.google.android.exoplayer:exoplayer-core:2.11.4"
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.7'
implementation "com.github.bumptech.glide:glide:4.11.0"
implementation "com.google.gms:google-services:4.3.3"
implementation 'com.google.android.gms:play-services-drive:17.0.0'
implementation 'com.google.android.gms:play-services-auth:18.0.0'
implementation 'com.google.apis:google-api-services-gmail:v1-rev72-1.23.0'
implementation 'com.google.android.material:material:1.2.0-alpha06'
implementation project(path: ':shared')
}在共享分支中，包括的库是:
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation "org.jetbrains.kotlin:kotlin-stdlib:1.3.72"
implementation 'androidx.media:media:1.1.0'
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.72"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.2.0"
implementation "com.google.android.exoplayer:extension-mediasession:2.11.4"
implementation "com.google.android.exoplayer:exoplayer-core:2.11.4"
implementation "com.google.android.exoplayer:exoplayer-dash:2.11.4"
implementation "com.google.android.exoplayer:exoplayer-ui:2.11.4"
implementation "com.google.android.exoplayer:exoplayer-hls:2.11.4"
implementation "com.google.android.exoplayer:exoplayer-smoothstreaming:2.11.4"
implementation "com.github.bumptech.glide:glide:4.11.3"
}因此，我尝试了任何我知道的事情，但是问题仍然存在。有没有人可以给我一个建议，一个主意，可以帮助我解决这个问题并继续进行培训？
非常感谢您的贡献。
最佳答案
UAMP version1不再受支持，并且因为其中许多内容已被弃用而无法使用。我的建议是不要导入项目并进行更改。您需要从头开始构建自己的。