How to increase width of BottomNavigationView to fill the screen

Question

How to increase width of BottomNavigationView menu. Below is the current scenario. I am not able to increase the width to complete screen.

Menu.xml

Answer 1

i dont remember where i found this solution exactly but you use this helper class to disable item shifting for BottomNavigation using Java Reflection :

import android.content.Context;
import android.graphics.Typeface;
import android.support.design.internal.BottomNavigationItemView;
import android.support.design.internal.BottomNavigationMenuView;
import android.support.design.widget.BottomNavigationView;
import android.util.Log;
import android.widget.TextView;
import java.lang.reflect.Field;

public class BottomNavigationViewHelper {
    public static void disableShiftMode(Context context,BottomNavigationView view) {
        BottomNavigationMenuView menuView = (BottomNavigationMenuView) view.getChildAt(0);
        try {
            Field shiftingMode = menuView.getClass().getDeclaredField("mShiftingMode");
            shiftingMode.setAccessible(true);
            shiftingMode.setBoolean(menuView, false);
            shiftingMode.setAccessible(false);
            for (int i = 0; i < menuView.getChildCount(); i++) {
                BottomNavigationItemView item = (BottomNavigationItemView) menuView.getChildAt(i);

                Field LargeText = item.getClass().getDeclaredField("mLargeLabel");
                LargeText.setAccessible(true);
                Field SmallText = item.getClass().getDeclaredField("mSmallLabel");
                SmallText.setAccessible(true);

//                 TextView SmallTextView =(TextView) SmallText.get(item);
//                 TextView LargeTextView =(TextView) LargeText.get(item);

//                 Typeface tf = TypefaceHelper.getTypeface(context);
//                 SmallTextView.setTypeface(tf);
//                 LargeTextView.setTypeface(tf);

                //noinspection RestrictedApi
                item.setShiftingMode(false);
                // set once again checked value, so view will be updated
                //noinspection RestrictedApi
                item.setChecked(item.getItemData().isChecked());
            }
        } catch (NoSuchFieldException e) {
            Log.e("BNVHelper", "Unable to get shift mode field", e);
        } catch (IllegalAccessException e) {
            Log.e("BNVHelper", "Unable to change value of shift mode", e);
        }
    }
}