Question

Summary:

I have an AAR file that depends on a JAR file, when I build the AAR project, it doesn't contain the JAR code.

Details:

I have a Java SDK library project that contains code that we use for Java web projects and such, this library is created using Gradle and resides in an internal nexus server (as a JAR).

The goal is to provide an "Android configured" version of this JAR library through an AAR library that multiple Android Applications can use and minimize the effort (and boilerplate code) to implement it. This AAR file is also uploaded to the nexus server to be used by the Android Application projects.

My AAR project includes a gradle dependency for my Java SDK library (the JAR) but when built, the AAR doesn't include any classes from it.

Code:

This is the Java SDK project's gradle file:

apply plugin: 'java'

//noinspection GroovyUnusedAssignment
sourceCompatibility = 1.7
version = '1.1.1'

repositories {
    mavenCentral()
}

jar {
    from {
        configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }
    }
}

dependencies {
    testCompile group: 'junit', name: 'junit', version: '4.11'
    testCompile 'org.apache.directory.studio:org.apache.commons.io:2.4'
    compile 'org.springframework:spring-web:3.1.1.RELEASE'
    compile 'com.google.code.gson:gson:2.3'
}

This is the gradle file for my AAR Project, note that I removed the Maven repository declarations to my nexus server from it. I guess it shouldn't matter for the sake of this question.

apply plugin: 'com.android.library'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.1"

    defaultConfig {
        minSdkVersion 16
        targetSdkVersion 23
        versionCode 1
        versionName "2.2.2"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    lintOptions {
        abortOnError false
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.0'

    compile ('com.mycompany:javasdk:1.1.1')
}

This is the gradle file for my Android Project, again I removed the nexus server references:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.1"

    defaultConfig {
        applicationId "com.mycompany.application1"
        minSdkVersion 16
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.0'

    compile ('com.mycompany:androidsdk:2.2.2@aar')
}

NOTE: I initially solved the issue by adding the JAR in the lib directory of the AAR project, but this is undesired. It makes having a nexus server useless. It would be good that we can just bump the JAR's version number in the AAR project's gradle file and the update happens automatically at compile time.

NOTE2: I tried adding transitive=true to my AAR dependency in the Android Project but it didn't solved anything, the real issue is that when building the AAR project, the JAR project code doesn't get bundled.

Answer 1

您可以添加此任务：

task copyLibs(type: Copy) {
    from configurations.compile
    into 'libs'
}

依赖关系将从您的Nexus下载，但是当您需要打包库时，请先执行此任务，jar文件将被复制并包含在最终aar内。

Answer 2

默认情况下，AAR不包含任何依赖项。 @Hector提到的解决方案应该适用于gradle插件＆lt; 3.0。对于Gradle插件3.0+，请按照here提及的自定义配置。

android { ... }

// Add a new configuration to hold your dependencies
configurations {
    myConfig
}

dependencies {
    ....
    myConfig 'com.android.support:appcompat-v7:26.1.0'
    myConfig 'com.android.support:support-v4:26.1.0'
    ...
}

task copyLibs(type: Copy) {
    from configurations.myConfig 
    into "libs"
}

Answer 3

没有任何建议对Gradle 4.6有所帮助，所以我浪费了一整天来发明自己的东西。

最终，我找到了一个不错的Gist，并针对我的Gradle版本进行了修改： https://gist.github.com/stepio/824ef073447eb8d8d654f22d73f9f30b

Answer 4

在带有Gradle的android工具3.6.2中，上端的功能对我不起作用。 5.6.1。对于遇到相同问题的任何人，最终使用https://github.com/kezong/fat-aar-android对我来说都很好。

How to include JAR dependency into an AAR library

4 个答案: