build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        mavenCentral()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.2.2'
        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.0'
        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.4.1'
    }
}

repositories {
    mavenCentral()
    jcenter()
}

subprojects {
    repositories {
        mavenCentral()
        jcenter()
    }

    ext {
        compileSdkVersion = 25
        buildToolsVersion = "25.0.3"
        minSdkVersion = 17
        targetSdkVersion = 22
        supportLibVersion = "25.3.1"
    }

    tasks.withType(JavaCompile) {
        options.encoding = 'UTF-8'
        sourceCompatibility = 1.7
        targetCompatibility = 1.7
    }

    tasks.withType(Javadoc) {
        options.addStringOption('Xdoclint:none', '-quiet')
        options.addStringOption('encoding', 'UTF-8')
        options.addStringOption('charSet', 'UTF-8')
    }
}