Update of the application to support modern phones.
In android 5 and 6 the usage of options menu is not supported through HW or SW buttons, in Android 6 the only was is to go through Accessibility Assistant.
Application is now using part of the material design with ActionBar and TabLyout using ViewPager to switch between screens using Fragments.
Also Calculator layout now takes into consideration display density
Business functionality of the application is not affected.
Update of the application to support modern phones. In android 5 and 6 the usage of options menu is not supported through HW or SW buttons, in Android 6 the only was is to go through Accessibility Assistant. Application is now using part of the material design with ActionBar and TabLyout using ViewPager to switch between screens using Fragments. Also Calculator layout now takes into consideration display density
Business functionality of the application is not affected.