APK optimizations

When everything is done, the code is developed and tested, and users are waiting for an update of our application, we use it to build an APK file to distribute through the Google Play Store or anywhere else. However, due to multiple factors, the resulting APK file is forever getting bigger: new feature implementations, new, different configurations to support, new Android versions, more libraries used in the application, and so on. This way, we are forcing our users to use more bandwidth to update it and more storage to save it. In addition, there is a limit to the APK size that can be uploaded and distributed via the store. So, are we sure that we are doing well? What can we do to reduce the file size? Let's try to give an answer to these questions in the following pages from different points of view.

Removing unused code

High-level languages consider reusability of the code to improve development times and reduce debugging. It is also helpful to minimize the APK file size...