build.gradle

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

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.2.3'
        classpath 'com.novoda:bintray-release:0.3.4'
        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:+'
        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()
//        def REPOSITORY_URL = 'http://jcenter.bintray.com/'
//        all { ArtifactRepository repo ->
//            println repo.url.toString()
//            if ((repo instanceof MavenArtifactRepository) && repo.url.toString().startsWith("https://jcenter.bintray.com/")) {
//                project.logger.lifecycle "Repository ${repo.url} replaced by $REPOSITORY_URL."
//                remove repo
//            }
//        }
//        jcenter {
//            url REPOSITORY_URL
//        }
    }
    //加上这些
    tasks.withType(Javadoc) {
        options{ encoding "UTF-8"
            charSet 'UTF-8'
            links "http://docs.oracle.com/javase/7/docs/api"
        }
    }
}

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