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:$localGradlePluginVersion"
        classpath 'com.jakewharton:butterknife-gradle-plugin:8.8.1'

        // 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
}
ext {
    buildToolsVersion = localBuildToolsVersion
    compileSdkVersion = 26
    minSdkVersion = 17
    targetSdkVersion = 27
    javaVersion = JavaVersion.VERSION_1_8
    // App dependencies version
    supportLibraryVersion = "25.3.1"
    gsonVersion = "2.8.0"
    //需检查升级版本
    arouterVersion = "1.2.2"
    arouterProcessorVersion = "1.1.3"
}