Automate APK signing with Gradle script

[nya-elimu]

Make it possible to automatically sign the APK file by running a ./gradlew <...> command.

For each new release, we are currently doing the following steps:

• Automatic version bumping #96 Remove -SNAPSHOT from versionName
• Automatic version bumping #96 Commit the change to GitHub
• Automatic version bumping #96 Create new release (and tag) in GitHub
• Compile APK, and sign the APK using our Java KeyStore
• Upload the signed APK to the GitHub release (as asset attachment)
• Automatic version bumping #96 Bump versionCode and versionName
• Automatic version bumping #96 Commit the change to GitHub

We need to automate these steps by adding code to the app/build.gradle file.

[nya-elimu]

Note that we have a keystore file for signing APK releases.

[gitcoinbot]

Issue Status: 1. Open 2. Started 3. Submitted 4. Done

---

This issue now has a funding of 0.0333 ETH (101.96 USD @ $3061.88/ETH) attached to it as part of the elimu-ai fund.

• If you would like to work on this issue you can 'start work' on the Gitcoin Issue Details page.
• Want to chip in? Add your own contribution here.
• Questions? Checkout Gitcoin Help or the Gitcoin's Discord
• $4,695,002.74 more funded OSS Work available on the Gitcoin Issue Explorer

[gitcoinbot]

Issue Status: 1. Open 2. Started 3. Submitted 4. Done

---

Workers have applied to start work.

These users each claimed they can complete the work by 264 years, 6 months from now.
Please review their action plans below:

1) xinminsu has applied to start work (Funders only: approve worker | reject worker).

add signingConfigs and buildTypes in app/build.gradle

Learn more on the Gitcoin Issue Details page.

[nya-elimu]

Do you plan to do CI/CD on top later? Or do you plan to do just artifact compilation and management over GitHub Actions?

@eugenehp We will most likely trigger the compilation and signing in our Jenkins CI.

[LDuncAndroid]

Is this still a requirement? I see rejections of applicants but not sure why.

[nya-elimu]

@LDuncAndroid Yes, automatic version bumping has already been implemented in #96, so signing the compiled APK is the remaining step. Would you be interested in giving it a try? 🙂