Change Bottom Bar icon size android

Question

I am using https://github.com/roughike/BottomBar library to make my bottom bar for android but i can't change the size of the icons , any idea how to make them small ?

activity_main

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context="ytstudios.wall.plus.MainActivity"
android:background="@color/colorAccent">

<android.support.v7.widget.Toolbar
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/colorPrimary"
    android:elevation="8dp">
</android.support.v7.widget.Toolbar>

<com.roughike.bottombar.BottomBar
    android:id="@+id/bottom_bar"
    android:layout_width="match_parent"
    android:layout_height="60dp"
    android:layout_alignParentBottom="true"
    android:background="@color/colorPrimary"
    app:bb_tabXmlResource="@xml/bottom_tabs"
    app:bb_inActiveTabColor="@color/tabSelected"
    app:bb_inActiveTabAlpha="0.2"
    app:bb_behavior="iconsOnly"
    app:bb_activeTabColor="@color/tabSelected">
</com.roughike.bottombar.BottomBar> 

Answer 1

The easiest way would be use Android Asset Studio tool to convert your icons according to your size
As you will reduce asset size in the tool your icon will be reduced in size and will be displayed correctly.