Quiz Me

Quiz app for Android and iOS. Install the base packages from QuizMe.

npm install
react-native link

Configure Firebase for Android/iOS

Use the Firebase Console to set up two apps, one for Android, the other for iOS. During this process you will create the following files, which are not source controlled:

• GoogleService-Info.plist (iOS)
• google-services.json (Android)

Note that most of the rest of the setup required for FCM should already be configured in the repository.

Build for Android

Configure Build

Navigate to QuizMe/android/app and build a keystore and assign it a password:

keytool -genkeypair -v -keystore quiz-me.keystore -alias quiz-me-key -keyalg RSA -keysize 2048 -validity 10000

Create QuizMe/android/app/gradle.properties and add the following:

RELEASE_STORE_FILE=quiz-me.keystore
RELEASE_KEY_ALIAS=quiz-me-key

Plain Text Password

This isn't recommended, but the easiest way to configure is by specifying the passwords in plain text:

RELEASE_STORE_PASSWORD=password
RELEASE_KEY_PASSWORD=password

Mac Keychain Password

The more secure way (when using a Mac) is to use the Keychain Access app. Configure a password in a new keychain called quizme_keystore, specifying your Mac username.

Then in gradle.properties add the following references:

RELEASE_MAC_KEYCHAIN=quizme_keystore
MAC_ADMIN_USER=Nesh Patel

Add SHA Fingerprints to Firebase

In order to use Google Sign In features with Firebase, add the SHA keys from your keystore to the Project Settings in the Firebase Console. To get your SHA fingerprints, run the following for your release keystore. Add both SHA-1 and SHA-256 fingerprints.

# For Prod
keytool -exportcert -list -v -alias quiz-me-key -keystore android/keystores/quiz-me.keystore

# For Dev  (password: android)
keytool -exportcert -keystore ~/.android/debug.keystore -list -v

After doing this, on the Google API console you should have 4 OAuth Client IDs: Web, iOS and two for Android. Download google-services.json from Firebase project settings and put it on your repository. Ensure that the oauth_client array has 3 client IDs in order: Dev Android, Prod Android, Web. That is the expected order for the app, otherwise there will be failures with either the development or release versions when signing into Google.

Increase Memory for Build

If you experience the error Expiring Daemon because JVM Tenured space is exhausted when building the app, add the followingto gradle.properties:

org.gradle.jvmargs=-Xmx2048M -XX\:MaxHeapSize\=10g`

Build App

Once the configuration in the previous section is done, navigate to QuizMe/android and run the following to build the app:

./gradlew assembleRelease

The release APK will be created at QuizMe/android/app/build/outputs/apk/release/app-release.apk.