android - Gradle 脱糖失败，层次结构不完整

Question

我正在做这个项目:https://github.com/muxinc/mux-stats-sdk-exoplayer/tree/min_sdk_version_fix它是一个名为 demo 的 Android 应用程序，它依赖于来自同一个名为 MuxExoPlayer 的项目的模块，该项目依赖于 MuxCore.jar 库。

当我尝试使用 minSdkVersion 16 编译项目时，我在 jar 文件中遇到了脱糖问题，错误:

Transform artifact full.jar (project :MuxExoPlayer) with DexingWithClasspathTransform
AGPBI: {"kind":"error","text":"Default method desugaring of `com.mux.stats.sdk.muxstats.MuxStatsExoPlayer` failed because it's hierarchy is incomplete. The class `com.mux.stats.sdk.core.events.EventBus` is missing and it is the declared super class of `com.mux.stats.sdk.muxstats.MuxBaseExoPlayer`","sources":[{}],"tool":"D8"}

当我使用 minSdkVersion 24 编译时，我没有收到此错误并且项目编译得很好。

MuxCore.jar 也是用 gradle 构建的，这里是 gradle.build:

apply plugin: 'java-library'

// In this section you declare where to find the dependencies of your project
repositories {
    // Use jcenter for resolving your dependencies.
    // You can declare any Maven/Ivy/file repository here.
    jcenter()
}
tasks.withType(JavaCompile) {
    sourceCompatibility = '1.7'
    targetCompatibility = '1.7'
}

dependencies {
    // This dependency is exported to consumers, that is to say found on their compile classpath.
    api 'org.apache.commons:commons-math3:3.6.1'

    // This dependency is used internally, and not exposed to consumers on their own compile classpath.
    implementation 'com.google.guava:guava:23.0'
    implementation 'org.json:json:20180130'

    // Use JUnit test framework
    testImplementation 'junit:junit:4.4'
    testImplementation 'org.mockito:mockito-core:2.23.4'
}

我在这里想念什么？
我需要如何编译 MuxCore 才能使用 android minSdkVersion 16 进行编译？

Answer 1

我有同样的问题，也在 Mux github repo 中创建了一张票，但无法让它工作......如果你将 minSdk 更新为 24 它将工作......

https://github.com/muxinc/mux-stats-sdk-exoplayer/issues/19

对我有用的是:不要将 MuxStatsExoPlayer 作为模块添加，而是将应用程序模块中的所有文件和类直接添加到项目中，它应该可以工作。