如何快速将Android库发布到JCenter

将Android库发布到jcenter是为了更方便的引用

一般有以下几个步骤：

新建工程和要发布的module
修改build.gradle
新建仓库
library的构建和上传
将library发布到jceter等待审核通过
收到审核结果邮件，引用项目

1. 新建工程和module

新建工程，并将你要发布的独立成一个module，便于发布

example:

这里面新建了lib-db module，我们的目标就是将它达成aar格式并发布到jcenter中

2. 修改build.gradle

project 的build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.buildscript {repositories {google()jcenter()}dependencies {classpath 'com.android.tools.build:gradle:3.1.3'//关键的二行代码必须加上classpath 'com.github.dcendents:android-maven-gradle-plugin:1.4.1'classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.7.3'// NOTE: Do not place your application dependencies here; they belong// in the individual module build.gradle files}
}allprojects {repositories {google()jcenter()}
}task clean(type: Delete) {delete rootProject.buildDir
}

module的build.gradle

apply plugin: 'com.android.library'

//1、引用插件
apply plugin: 'com.github.dcendents.android-maven'
apply plugin: 'com.jfrog.bintray'android {compileSdkVersion 28defaultConfig {minSdkVersion 14targetSdkVersion 28versionCode 1versionName "1.0"}buildTypes {release {minifyEnabled falseproguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'}}}dependencies {implementation fileTree(dir: 'libs', include: ['*.jar'])
}

//2、自定义一些属性，这些属性在upload.gradle都会使用到
ext { //发布到bintray上仓库名，执行上传前必须手动创建同名到仓库，否则上传会失败bintrayRepo = 'framework'bintrayName = 'db' //群组idpublishedGroupId = 'com.fzm.db' //发布成库的名称libraryName = 'db' //最好和libraryName保持一致artifact = 'db' //库描述libraryDescription = 'a db library for fzm'siteUrl = 'github project index page'gitUrl = 'github project url'libraryVersion = '0.0.3'developerId = 'developer id'developerName = 'your name'developerEmail = 'xxxx@163.com'licenseName = 'The Apache Software License, Version 2.0'licenseUrl = 'http://www.apache.org/licenses/LICENSE-2.0.txt'allLicenses = ["Apache-2.0"]
}

//此处是为了将发布的代码逻辑封装到upload.gradle脚步中去了，这样build.gradle更简洁，代码维护性更高
apply from : 'upload.gradle'

module name建议和bintrayName、libraryName保持一致

upload.gradle

此脚步文件格式比较固定，可以直接copy即可

group = publishedGroupId
version = libraryVersioninstall {repositories.mavenInstaller {pom.project {packaging 'aar'groupId publishedGroupIdartifactId artifactname libraryNamedescription libraryDescriptionurl siteUrllicenses {license {name licenseNameurl licenseUrl}}developers {developer {id developerIdname developerNameemail developerEmail}}scm {connection gitUrldeveloperConnection gitUrlurl siteUrl}}}
}task sourcesJar(type: Jar) {classifier = 'sources'from android.sourceSets.main.java.srcDirs
}task javadoc(type: Javadoc) {source = android.sourceSets.main.java.srcDirsclasspath += project.files(android.getBootClasspath().join(File.pathSeparator))
}task javadocJar(type: Jar, dependsOn: javadoc) {classifier = 'javadoc'from javadoc.destinationDir
}artifacts {archives javadocJararchives sourcesJar
}Properties properties = new Properties()
properties.load(project.rootProject.file('local.properties').newDataInputStream())bintray {user = properties.getProperty("bintray.user")key = properties.getProperty("bintray.apikey")configurations = ['archives']pkg {repo = bintrayReponame = bintrayNamedesc = libraryDescriptionwebsiteUrl = siteUrlvcsUrl = gitUrllicenses = allLicensesdryRun = falsepublish = trueoverride = falsepublicDownloadNumbers = trueversion {desc = libraryDescription}}
}
javadoc{options{encoding "UTF-8"charSet "UTF-8"}
}

3. 新建仓库

访问https://bintray.com/ -> login -> view Profile -> add new Repository

注意：
这里的仓库名称必须和bintrayRepo字段保持一致，此处示例为framework；

因为我们通过脚步实现上传发布，所以需要用到api key；
edit Profile -> api key -> 输入密码

因为api key 属于敏感信息，所以我们存放到本地(local.properties)，不要上传到git上

bintray.user=userName
bintray.apikey=your api key

4. library的构建、上传

//clean and install
./gradlew clean install

upload
./gradlew bintrayUpload

成功后我们登录官网可以在framework仓库中看到发布的library了

注意此时该library并没有发布到jcenter中，还差最后一步

5. 发布到jcenter

进入自己的library(示例中为db) -> Add to JCenter

提交申请后只需要耐心等待审核了，审核通过会显示如下，这样你就可以直接引用了

三种引用方式