Important links

• Force your users to update your app with using Firebase ( https://medium.com/@sembozdemir/force-your-users-to-update-your-app-with-using-firebase-33f1e0bcec5a )
• Intent vs PendingIntent ( https://android.jlelse.eu/intent-vs-pendingintent-8ef2ad5824ed )
• https://inthecheesefactory.com/blog/how-to-share-access-to-file-with-fileprovider-on-android-nougat/en
• https://proandroiddev.com/android-development-best-practices-7278e9cdbbe9
• https://blog.mindorks.com/using-local-properties-file-to-avoid-api-keys-check-in-into-version-control-system