Android - How to change bottom navigation bar text's font family

Question

I have created a bottom bar navigation in my android page. But now I want to apply the custom font-family in bottom navigation texts.

This is the bottom navigation c

Answer 1

If you have a CustomFont in "Asset Folder" and you want to set in your "Bottom Navigation" use this code

        public static void persian_iran_font(final Context context, final View v) {
            try {
                if (v instanceof ViewGroup) {
                    ViewGroup vg = (ViewGroup) v;
                    for (int i = 0; i < vg.getChildCount(); i++) {
                        View child = vg.getChildAt(i);
                        persian_iran_font(context, child);
                    }
                } else if (v instanceof TextView) {
                    ((TextView) v).setTypeface(Typeface.createFromAsset(context.getAssets(), "teshrinarmedium.otf"));
                }
            } catch (Exception e) {
            }
        }
    

And then use methode in your MainActivity Like This

  BottomNavigationView navigation = (BottomNavigationView) findViewById(R.id.navigation);
  persian_iran_font(getApplicationContext(), navigation);

kotlin Version

fun persian_iran_font(context: Context, v: View) {
    try {
        if (v is ViewGroup) {
            val vg = v as ViewGroup
            for (i in 0 until vg.childCount) {
                val child: View = vg.getChildAt(i)
                persian_iran_font(context, child)
            }
        } else if (v is TextView) {
            (v as TextView).setTypeface(
                Typeface.createFromAsset(
                    context.getAssets(),
                    "teshrinarmedium.otf"
                )
            )
        }
    } catch (e: Exception) {
    }
}

Goodluck