發佈開源項目到Jcenter從0到1，自身經歷

把自己的依賴放到JCenter 首先需要註冊Bintray ，因爲Bintray 是 JCenter 庫的運營商。

1. 首先你要有一個項目，準確的說應該有一個Android moudle並把項目上傳到GitHub

2. 註冊 ：網址https://bintray.com/signup/oss，這裏註冊一定要註冊個人賬號

3. Add New Repository

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4. Repository添加成功後會跳轉到Repository首頁，接下來需要Add a Package

5. package添加成功後去package主頁Add a Version

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   到此，在Bintray上的操作就告一段落

   現在回到AndroidStudio進行配置

6. 在Project的build.gradle添加依賴(項目最外層build.gradle)

   dependencies {
       classpath 'com.android.tools.build:gradle:3.6.3'
       //以下兩項依賴需要添加
       classpath "com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.4"
       classpath "com.github.dcendents:android-maven-gradle-plugin:2.1"
       // NOTE: Do not place your application dependencies here; they belong
       // in the individual module build.gradle files
   }
   

7. 在local.properties配置Bintray的用戶名和Apikey

   bintray.user=你的用戶名
   bintray.apikey=你的apikey
   

8. 在moudle的build.gradle添加如下屬性注意是最上面(在apply plugin: 'com.android.library’之上)

   ext {
       bintrayRepo = 'appUpdate' // 之前添加的Repository name
       bintrayName = 'com.sanzhi.appupdate' // 之前添加的package name
       publishedGroupId = 'com.sanzhi.appupdate'   // 默認應該和package name一樣 this is the ID we want to see in implementation line
       libraryName = 'appupdate'     // moudle的名稱this is the module name of library
       artifact = 'appupdate'        // moudle的名稱this is the artifact we want to see in implementation line
       libraryDescription = 'self app updata library' // description of library
       siteUrl = 'https://github.com/parade0393/AppUpdate'    // 項目再github的主頁git repo url
       gitUrl = 'https://github.com/parade0393/AppUpdate.git' // 項目再GitHub的倉庫地址git repo vcs url
       libraryVersion = '1.0.0'      // 之前添加的版本號library version後續更新也是改這個版本號
       developerId = 'parad0393'                // This is your bintray username
       developerName = 'parad0393'              // Developer's name
       developerEmail = '[email protected]'                // Developer's email
       licenseName = 'The Apache Software License, Version 2.0'  // for example, The Apache Software License, Version 2.0
       licenseUrl = 'http://www.apache.org/licenses/LICENSE-2.0.txt'   // for example, http://www.apache.org/licenses/LICENSE-2.0.txt
       allLicenses = ["Apache-2.0"]    // array of licenses, for example, ["Apache-2.0"]
   }
   

9. 在moudle下新建publish.gradle文件，並在文件添加如下內容

   apply plugin: 'com.jfrog.bintray'
   apply plugin: 'com.github.dcendents.android-maven'
   version = libraryVersion
   group = publishedGroupId    // Maven Group ID for the artifact
   install {
       repositories.mavenInstaller {
           // This generates POM.xml with proper parameters
           pom {
               project {
                   packaging 'aar'
                   // Add your description here
                   name libraryName
                   description libraryDescription
                   url siteUrl
                   // Set your license
                   licenses {
                       license {
                           name licenseName
                           url licenseUrl
                       }
                   }
                   developers {
                       developer {
                           id developerId
                           name developerName
                           email developerEmail
                       }
                   }
                   scm {
                       connection gitUrl
                       developerConnection gitUrl
                       url siteUrl
                   }
               }
           }
       }
   }
   task sourcesJar(type: Jar) {
       from android.sourceSets.main.java.srcDirs
       archiveClassifier  = 'sources'
   }
   artifacts {
       archives sourcesJar
   }
   // Bintray
   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 = bintrayRepo
           name = bintrayName
           desc = libraryDescription
           websiteUrl = siteUrl
           vcsUrl = gitUrl
           licenses = allLicenses
           publish = true
           publicDownloadNumbers = true
           version {
               desc = libraryDescription
           }
       }
   }
   //這裏不需要做修改
   

10. 回到moudle的build.gradle在apply plugin: 'com.android.library’後面添加apply from: ‘publish.gradle’

11. 至此在AndroidStudio配置完成，接下來就是打包上傳到Bintray，在Studio的terminal中依次輸入以下兩個命令

    gradlew install
    gradlew bintrayUpload
    

12. 正常情況下執行完以上兩個命令，代碼就已經上傳到Bintray裏，現在還剩最後一步，回到Bintray，打開本package頁面 Add to Jcenter

13. 等待審覈通過就可以在AndroidStudio裏直接implementation了

14. 參考文章

    1. How to Publish an Open Source Android Library on JCenter
    2. 新版bintray教你上傳JCenter倉庫