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“核心”（myLibrary-core）的Android库。我遇到了问题，让我的依赖项显示在我生成的pom文件中，但我（认为我）使用这个问题的答案修复了它：Gradle不包括已发布的pom中的依赖项.xml

我现在正试图解决为什么将我的库导入到单独的应用程序中会产生此错误。这是我将库作为 gradle 依赖项导入到项目中时遇到的错误：

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

这是我的身材:

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)
                }
            }
        }
    }
}

}

这将生成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play-services、support-v13和appcompat-v7，错误就消失了。我想不出任何其他的尝试，所以我很高兴尝试任何建议。

Answer 1

Android插件不能消耗POM依赖项；它只能处理JAR或AAR库。这意味着:< code > com . example:my library 依赖于库(appcompat-v7、myLibrary-core、support-v13和play-services ),但它本身不是库(Android Gradle插件不处理< code >

我知道这很令人困惑，因为Android Gradle消化了模块的. pom文件以解决其依赖关系等，但它无法处理使用它作为打包的库。

如果您想创建一个可以被Android Gradle插件使用的模块，则需要将其打包为JAR或AAR。