Signing Android Apps
Every Android application must be digitally signed with a certificate before it can be installed on a device or published to the Google Play Store, verifying the authenticity of the app’s publisher.
Generating a Keystore
Storing Keystore Credentials Securely
Referencing the Keystore in build.gradle
Backing Up Your Keystore
Losing your keystore file means you can never publish updates to an existing app under the same package name again, so it must be securely backed up in multiple locations.
Using Google Play App Signing
Google Play App Signing allows Google to securely manage your app’s final signing key, letting you sign your uploads with a separate upload key while Google handles the distribution signing.
Verifying a Signed APK
Conclusion
Properly generating, securing, and referencing a keystore is an essential and irreversible step in the Android release process, making secure backup and credential management critically important.
