下载网址：https://github.com/wyouflf/xUtils3

第一步：新建一个自己的工程；

第二步：点File->New->Import  Module，选择自己下载好的xutils3，目录为：D:\adtext\xUtils3-master\sample

第三步：修改库xutils的build.gradle，屏蔽无用代码，将versionName的值改为版本号，修改；

apply plugin: 'com.android.library'
//apply plugin: 'com.github.dcendents.android-maven'
//apply plugin: 'com.jfrog.bintray'
//
//def siteUrl = 'https://github.com/wyouflf/xUtils3'
//def gitUrl = 'https://github.com/wyouflf/xUtils3.git'
//group = "org.xutils"
//version = "3.5.0"

android {
    compileSdkVersion 25
    buildToolsVersion '25.0.0'

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 25
        versionCode 20170405
        versionName "3.5.0"
    }
    buildTypes {
        debug {
            minifyEnabled false
            debuggable true
        }
        release {
            minifyEnabled false
            debuggable true
        }
    }
    sourceSets {
        main {
            jniLibs.srcDirs = ['libs']
            java.srcDirs = ['src/main/java']
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_6
        targetCompatibility JavaVersion.VERSION_1_6
    }
}

//install {
//    repositories.mavenInstaller {
//        // This generates POM.xml with proper parameters
//        pom {
//            project {
//                packaging 'aar'
//                name 'xUtils'
//                description 'android orm, bitmap, http, view inject... '
//                // #CONFIG# // project title
//                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 'wyouflf'
//                        // #CONFIG# // your user id (you can write your nickname)
//                        name 'lei.jiao'
//                        // #CONFIG# // your user name
//                        email 'wyouflf@qq.com'
//                        // #CONFIG# // your email
//                    }
//                }
//                scm {
//                    connection gitUrl
//                    developerConnection gitUrl
//                    url siteUrl
//                }
//            }
//        }
//    }
//}
//task sourcesJar(type: Jar) {
//    from android.sourceSets.main.java.srcDirs
//    classifier = 'sources'
//}
//task javadoc(type: Javadoc) {
//    options.encoding = "UTF-8"
//    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 = "xUtils"
//        // #CONFIG# project name in jcenter
//        websiteUrl = siteUrl
//        vcsUrl = gitUrl
//        licenses = ["Apache-2.0"]
//        publish = true
//    }
//}

apply plugin: 'com.android.application'

android {
    compileSdkVersion 25
    buildToolsVersion '25.0.0'

    defaultConfig {
        applicationId "org.xutils.sample"
        minSdkVersion 14
        targetSdkVersion 22 // 不使用api23的动态权限策略
        versionCode 1
        versionName "1.0"
    }

    signingConfigs {
        debugConfig {
            storeFile file("debug.keystore")
            storePassword "android"
            keyAlias "androiddebugkey"
            keyPassword "android"
        }
    }
    buildTypes {
        release {
            debuggable false
            minifyEnabled true
            signingConfig signingConfigs.debugConfig
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.android.support:appcompat-v7:25.3.1'
    compile 'com.android.support:support-v4:25.3.1'
    compile 'com.android.support:recyclerview-v7:25.3.1'
    compile 'com.android.support:design:25.3.1'
    compile project(':xutils')
}

第五步：将xutils库作为工程添加到自己app的build.gradle中，在File->Project Structure中选择APP，然后library中添加

初始化时导入：

import org.xutils.x;