There are a few minor details that we have to pay attention to before we publish the application.
Android Studio has been signing all our debug builds with a debug dummy certificate. You will not be able to publish an application to Google Play signed with a debug certificate. You will need to generate a signed production build with your release certificate. Signing an application with your own certificate will help you identify yourself as the author of the application in Google Play.
In order to generate a signed build, go to the Build menu and select Generate Signed APK:
If you have not created a keystore before or you would like to use a new one, Android Studio will allow you to create a keystore or select a previously created one. Once an application is signed with a key and published to the store, it will have to be always signed with that key; otherwise, users with the previous version of the app will not be able to update it. So, once you create...