Android

Building Requirements

To build an Android app:

• Windows/Linux/macOS
• Google Play Developer Account
• Keytool
• APKsigner

Generate Keystore

You need to generate a Keystore (if you already don't have one) and use it to sign app-release-unsigned.apk. 

Use the keytool provided by the JDK found in %JAVA_HOME%/bin/

keytool -genkey -v -keystore my.keystore -keyalg RSA -keysize 2048 -validity 10000 -alias app

Sign

Android 7.0 introduces APK Signature Scheme v2, a new app-signing scheme that offers faster app install times and more protection against unauthorized alterations to APK files (See here and here for more details).

Therefore, Google implemented its own APK signer called apksigner.

The script file can be found in %ANDROID_HOME%/sdk/build-tools/latest version/ (the .jar is in the /libsubfolder).

Use it like this:

apksigner sign --ks my.keystore my-app.apk

The signed APK can be verified with:

apksigner verify my-app.apk

The official documentation can be found here.

Publish App to the Google Play Store

Submit the Android app via the Play Store.