1.賬號首先你得要有jcenter的賬號，最簡單的就是用google登陸了
請移步

2.接下來就是拿到你自己的appk 和appid了，
拿到這些東西之後，放到根目錄下的local.properties檔案裡面，具體內容如下：

This file is automatically generated by Android Studio.

Do not modify this file – YOUR CHANGES WILL BE ERASED!

sdk.dir=/Users/guoyoujin/Library/Android/sdk
bintray.user=trycatch
bintray.apikey
 
=12345

3.接下來就是引入需要的外掛了，這裡我採用了最新的gradle配置，配置如下：
(1)根目錄build.gradle配置

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.0'
 

        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.4'
        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.4.1'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
        mavenCentral()
    }
}

task clean(type: Delete) {
    delete
 
 rootProject.buildDir
}

(2)lib 的build.gradle配置

apply plugin: 'com.android.library'
apply plugin: 'com.github.dcendents.android-maven'
apply plugin: 'com.jfrog.bintray'
android {
    compileSdkVersion 23
    buildToolsVersion "23.0.3"
    resourcePrefix "bounceprogressbar__"    //這個隨便填

    defaultConfig {
        minSdkVersion 14
        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-v7:23.4.0'
    compile 'com.nineoldandroids:library:2.4.0+'
}

// 這個version是區分library版本的，因此當我們需要更新library時記得修改這個version
// 這個version影響後面的引用

version = "1.0.0"
def siteUrl = 'https://github.com/guoyoujin/MySnackBar'      // 專案的主頁
def gitUrl = 'https://github.com/guoyoujin/MySnackBar.git'   // Git倉庫的url
group = "com.trycatch.android"                                        // Maven Group ID for the artifact，一般填你唯一的包名
install {
    repositories.mavenInstaller {
        // This generates POM.xml with proper parameters
        pom {
            project {
                packaging 'aar'
                // Add your description here
                name 'Android SnackBar Widget'  //專案描述
                url siteUrl
                // Set your license
                licenses {
                    license {
                        name 'The Apache Software License, Version 2.0'
                        url 'http://www.apache.org/licenses/LICENSE-2.0.txt'
                    }
                }
                developers {
                    developer {
                        id 'guoyoujin'      //填寫的一些基本資訊
                        name 'TryCatch'
                        email '[email protected]'
                    }
                }
                scm {
                    connection gitUrl
                    developerConnection gitUrl
                    url siteUrl
                }
            }
        }
    }
}
task sourcesJar(type: Jar) {
    from android.sourceSets.main.java.srcDirs
    classifier = 'sources'
}
task javadoc(type: Javadoc) {
    source = android.sourceSets.main.java.srcDirs
    classpath += project.files(android.getBootClasspath().join(File.pathSeparator))
}
task javadocJar(type: Jar, dependsOn: javadoc) {
    classifier = 'javadoc'
    from javadoc.destinationDir
}
artifacts {
    archives javadocJar
    archives 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 = "maven"
        name = "MySnackBar" //釋出到JCenter上的專案名字
        websiteUrl = siteUrl
        vcsUrl = gitUrl
        licenses = ["Apache-2.0"]
        publish = true
    }
}

(3)配置gradle的版本：在檔案gradle/wrapper/gradle-wrapper.properties

Mon Dec 28 10:00:20 PST 2015

distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip

(4)檢視你的gradle版本，輸入命令

➜  MyCustomSnackBar git:(master) ✗ gradle -v

-----------------------------------------------------------
Gradle 2.14.1
------------------------------------------------------------

Build time:   2016-07-18 06:38:37 UTC
Revision:     d9e2113d9fb05a5caabba61798bdb8dfdca83719

Groovy:       2.4.4
Ant:          Apache Ant(TM) version 1.9.6 compiled on June 29 2015
JVM:          1.8.0_40 (Oracle Corporation 25.40-b25)
OS:           Mac OS X 10.11.6 x86_64

可以看到我的gradle版本是最新的gradle 2.14.1 而且我是用home brew管理的gradle，你也可以使用這個外掛管理，他是用ruby寫的

4.環境配置好了接下來就是輸入命令了

gradle install  or  sudo gradle install

gradle bintrayUpload or  sudo gradle bintrayUpload

如果中間沒有什麼問題的話，那就應該是返回success了

5.接下來就是在jcenter裡面點選 AddToJcenter發出一個請求等著就行了
6.AddToJcenter成功之後，最後就是引用自己的lib庫了，程式碼如下：

dependencies {
    compile 'com.trycatch.android:mysnackbar:1.0.0'
  }