hikarusato/bottomnavigationview

Android Sample Project for BottomNavigationView and disabling its 'ShiftMode' property using Reflection API

BottomNavigationView

Android sample project to demonstrate using the new BottomNavigtionView, which is newly added to the Android Support Design library.

The widgets works perfectly with 3 items and less, but trying to display 4 items or more results in other items being shifted to the screen edgets, which may not be an acceptable design in many cases.

This behavior is automatically triggered, due to an internal property of this widgets, called ShiftMode being intialized to true and not exposed to the end-user.

Since shiftmode is a private field declared in the BottomNavigationMenuView, also being an internal class, we use java reflection api to set this property accessible and change its value.

To make thing look more clear, here comes the screenshots for before and after setting the shiftmode to false.