build.gradle

apply plugin: 'com.android.library'

android {
    compileSdkVersion 26
    buildToolsVersion "27.0.0"
    defaultConfig {
        minSdkVersion 15
        targetSdkVersion 26
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile project(':mylibrary')
}