app/build.gradle

/**
 * The first line in the build configuration applies the Android plugin for
 * Gradle to this build and makes the android {} block available to specify
 * Android-specific build options.
 */

apply plugin: 'com.android.application'

/**
 * The android {} block is where you configure all your Android-specific
 * build options.
 */

android {
    /**
     * compileSdkVersion specifies the Android API level Gradle should use to
     * compile your app. This means your app can use the API features included in
     * this API level and lower.
     */
    compileSdkVersion 29
    /**
     * The defaultConfig {} block encapsulates default settings and entries for all
     * build variants, and can override some attributes in main/AndroidManifest.xml
     * dynamically from the build system. You can configure product flavors to override
     * these values for different versions of your app.
     */
    defaultConfig {

        /**
         * applicationId uniquely identifies the package for publishing.
         * However, your source code should still reference the package name
         * defined by the package attribute in the main/AndroidManifest.xml file.
         */

        applicationId "com.fairphone.checkup"

        // Defines the minimum API level required to run the app.
        minSdkVersion 22

        // Specifies the API level used to test the app.
        //noinspection OldTargetApi
        targetSdkVersion 28

        // Defines the version number of your app.
        versionCode 20202

        // Defines a user-friendly version name for your app.
        versionName "2.2.2"
    }
    /**
     * The buildTypes {} block is where you can configure multiple build types.
     * By default, the build system defines two build types: debug and release. The
     * debug build type is not explicitly shown in the default build configuration,
     * but it includes debugging tools and is signed with the debug key. The release
     * build type applies Proguard settings and is not signed by default.
     */
    buildTypes {
        /**
         * By default, Android Studio configures the release build type to enable code
         * shrinking, using minifyEnabled, and specifies the Proguard settings file.
         */
        release {
            minifyEnabled true // Enables code shrinking for the release build type.
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
        debug {
        }
    }
}

/*
 * Configures how to sign release builds
 *
 * Reads configuration from a file keystore.propertes if it exists. Falls back
 * to the default development keys otherwise (by doing nothing).
 */
def keystorePropertiesFile = rootProject.file("keystore.properties")

if (keystorePropertiesFile.exists()) {

    // Load keystore properties from file if it exists
    def keystoreProperties = new Properties()
    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))

    android {
        signingConfigs {
            release {
                keyAlias keystoreProperties['keyAlias']
                keyPassword keystoreProperties['keyPassword']
                storeFile file(keystoreProperties['storeFile'])
                storePassword keystoreProperties['storePassword']
            }
        }
        buildTypes {
            release {
                signingConfig signingConfigs.release
            }
        }
    }
}

/**
 * The dependencies {} block in the module-level build configuration file
 * only specifies dependencies required to build the module itself.
 */

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'androidx.fragment:fragment:1.2.4'
    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
}