build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion   rootProject.ext.compileSdkVersion
    buildToolsVersion   rootProject.ext.buildToolsVersion

    defaultConfig {
        minSdkVersion       rootProject.ext.minSdkVersion
        targetSdkVersion    rootProject.ext.targetSdkVersion
        applicationId       "com.mypopsy.sample.doorsignview"
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile project(path: ':library')
    compile deps.support.appcompat
    compile deps.support.design
}

afterEvaluate { project ->
    android.applicationVariants.each { variant ->

        Task copyApk = task(("release" + variant.variantData.name.capitalize()), type:Copy) {
            from variant.outputs[0].outputFile
            destinationDir project.projectDir
            dependsOn variant.assemble
        }

        variant.assemble.finalizedBy(copyApk)
    }
}