在应用程序中导入我的Android库不会被识别为库

Question

我正在尝试构建一个使用java库'core'(myLibrary-core)的android库.我有问题让我的依赖项显示在我生成的pom文件中,但我(我想)使用这个问题中的答案修复它:Gradle不包括已发布的pom.xml中的依赖项

我现在正在尝试解决为什么将我的库导入单独的应用程序会出现此错误.这是我将库作为gradle依赖项导入项目时出现的错误:

Error:Module version com.example:myLibrary:0.1.0 depends on libraries but is not a library itself

这是我的build.gradle:

apply plugin: 'android-sdk-manager'
apply plugin: 'com.android.library'

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.12.+'
        classpath 'com.jakewharton.sdkmanager:gradle-plugin:0.12.+'
    }
}

apply plugin: 'maven-publish'

group = 'com.example'
version = '0.1.0'

android {
    compileSdkVersion 19
    buildToolsVersion '19.1.0'

    defaultConfig {
        applicationId "com.example.android"
        minSdkVersion 11
        targetSdkVersion 19
        versionCode 1
        versionName "0.1.0"
    }
    buildTypes {
        release {
            runProguard false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    packagingOptions {
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/NOTICE'
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/NOTICE.txt'
        exclude 'META-INF/DEPENDENCIES'
    }
}

dependencies {
//    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:20.0.0'
    compile 'com.example:myLibrary-core:0.1.2'
    compile 'com.android.support:support-v13:20.0.0'
    compile 'com.google.android.gms:play-services:+'
}

// build JAR file
task androidReleaseJar(type: Jar, dependsOn: assembleRelease) {
    from "$buildDir/intermediates/classes/release/"
}

publishing {
    publications {
        maven(MavenPublication) {
            artifact androidReleaseJar {
                classifier "sources"
            }

            //The publication doesn't know about our dependencies, so we have to manually add them to the pom
            pom.withXml {
                def dependenciesNode = asNode().appendNode('dependencies')

                //Iterate over the compile dependencies (we don't want the test ones), adding a <dependency> node for each
                configurations.compile.allDependencies.each {
                    def dependencyNode = dependenciesNode.appendNode('dependency')
                    dependencyNode.appendNode('groupId', it.group)
                    dependencyNode.appendNode('artifactId', it.name)
                    dependencyNode.appendNode('version', it.version)
                }
            }
        }
    }
}

}

这会生成pom文件:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.example</groupId>
  <artifactId>myLibrary</artifactId>
  <version>0.1.0</version>
  <packaging>pom</packaging>
  <dependencies>
    <dependency>
      <groupId>com.android.support</groupId>
      <artifactId>appcompat-v7</artifactId>
      <version>20.0.0</version>
    </dependency>
    <dependency>
      <groupId>com.example</groupId>
      <artifactId>myLibrary-core</artifactId>
      <version>0.1.2</version>
    </dependency>
    <dependency>
      <groupId>com.android.support</groupId>
      <artifactId>support-v13</artifactId>
      <version>20.0.0</version>
    </dependency>
    <dependency>
      <groupId>com.google.android.gms</groupId>
      <artifactId>play-services</artifactId>
      <version>+</version>
    </dependency>
  </dependencies>
</project>

奇怪的是,如果我删除了play-services,support-v13和appcompat-v7,那么错误就会消失.我想不出任何其他的尝试,所以我很乐意尝试任何建议.

Answer 1

Android插件无法使用POM依赖项; 它只能处理JAR或AAR库.这意味着:com.example:myLibrary取决于库(appcompat-v7,myLibrary-core,support-v13和play-services),但不是库本身(Android Gradle插件不处理<packaging>pom</packaging>).

我知道这很令人困惑,因为Android-Gradle摘要模块的.pom文件来解决它的依赖关系等问题,但是它不能处理那些使用它作为包装的库.

如果要创建可由Android-Gradle插件使用的模块,则需要将其打包为JAR或AAR.