OpenTracks/myTracksLib/build.gradle

apply plugin: 'com.android.library'

android {
    compileSdkVersion 26

    defaultConfig {
        minSdkVersion 21
        targetSdkVersion 28
    }

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

dependencies {
    compile 'com.google.protobuf:protobuf-java:2.5.0'
}