<com.hjm.bottomtabbar.BottomTabBar
        android:id="@+id/botb"
        android:layout_width="match_parent"
        android:layout_height="match_parent"></com.hjm.bottomtabbar.BottomTabBar>

        BottomTabBar botb = findViewById(R.id.botb);
        botb.init(getSupportFragmentManager());
        botb.setChangeColor(Color.RED,Color.DKGRAY);
        botb.setFontSize(8);
        botb.setImgSize(50,50);
        botb.setTabPadding(4,6,10);