BottomNavigationView display both icons and text labels at all times

For anyone still looking for a solution and doesn't want to rely on third party libraries or runtime reflection, BottomNavigationView in Support Library 28/Jetpack natively supports always having text label.

This is the method you're looking for.

Or in XML, app:labelVisibilityMode="labeled"

UPDATE FROM May 8, 2018

You can useapp:labelVisibilityMode="labeled" directly in <android.support.design.widget.BottomNavigationView />

Source: https://developer.android.com/reference/com/google/android/material/bottomnavigation/LabelVisibilityMode

Don't need this below lengthy solution.

PREVIOUS ANSWER

I had some weird behavior with BottomNavigationView. When I was selecting any item/fragment in it, the fragment pushes BottomNavigationView a bit lower, so text of BottomNavigationView goes below the screen, so only icons were visible and text goes hidden on clicking of any item.

If you are facing that weird behavior then Here is the solution.Just remove

android:fitsSystemWindows="true"

in your root layout of fragment. Just remove this and boom! BottomNavigationView will work fine, now it can be shown with text and icon. I had this in my root CoordinatorLayout of fragment.

Also don't forget to add

BottomNavigationViewHelper.removeShiftMode(bottomNavigationView);

in your activity to disable shifting mode.

Here is that class:

public class BottomNavigationViewHelper {    @SuppressLint("RestrictedApi")    public static void removeShiftMode(BottomNavigationView view) {        //this will remove shift mode for bottom navigation 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);                item.setShiftingMode(false);                // set once again checked value, so view will be updated                item.setChecked(item.getItemData().isChecked());            }        } catch (NoSuchFieldException e) {            Log.e("ERROR NO SUCH FIELD", "Unable to get shift mode field");        } catch (IllegalAccessException e) {            Log.e("ERROR ILLEGAL ALG", "Unable to change value of shift mode");        }    }}

It is difficult in version 25.

Try this code. But I think it's not good solution.

BottomNavigationView navigationView = (BottomNavigationView) findViewById(R.id.bottomBar);BottomNavigationMenuView menuView = (BottomNavigationMenuView) navigationView.getChildAt(0);for (int i = 0; i < menuView.getChildCount(); i++) {    BottomNavigationItemView itemView = (BottomNavigationItemView) menuView.getChildAt(i);    itemView.setShiftingMode(false);    itemView.setChecked(false);}