BottomBar space at top

I´m using this library in my app and I love it, the main problem is that on some devices as Nexus 4 and 5, running Android 5.0 and 5.1 respectively, there is a space between the bottom bar and the FAB button, and I don´t know how to solve it. I set up the bottom bar with:

bottomBar = BottomBar.attach(this, savedInstanceState);
        bottomBar.noTopOffset();

        bottomBar.setMaxFixedTabs(2); //Three fragments -1

        bottomBar.setItems(
                new BottomBarTab(R.drawable.ic_scale_bathroom, "Weight"),
                new BottomBarTab(R.drawable.ic_food, "Food"),
                new BottomBarTab(R.drawable.ic_user_settings, "User"),
                new BottomBarTab(R.drawable.ic_burnt_calories, "Exercise")
        );

        bottomBar.selectTabAtPosition(1, true);

        // Setting colors for different tabs when there's more than three of them.
        bottomBar.mapColorForTab(0, ContextCompat.getColor(this, R.color.weightTab));
        bottomBar.mapColorForTab(1, ContextCompat.getColor(this, R.color.foodTab));
        bottomBar.mapColorForTab(2, ContextCompat.getColor(this, R.color.userTab));
        bottomBar.mapColorForTab(3, ContextCompat.getColor(this, R.color.exerciseTab));

All the fragments are displayed on activity_main.xml whose code is:

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="com.javierd.iifym.MainActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay"
        app:elevation="0dp">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay" />

    </android.support.design.widget.AppBarLayout>

    <FrameLayout
        android:id="@+id/fragment_container"
        android:layout_marginTop="?attr/actionBarSize"
        android:layout_below="@+id/toolbar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

</android.support.design.widget.CoordinatorLayout>

And, for example the exercise fragment layout:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context="com.javierd.iifym.MainActivity">

    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentEnd="true">

        <android.support.design.widget.FloatingActionButton
            android:id="@+id/fab"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="16dp"
            android:layout_marginEnd="16dp"
            android:src="@drawable/ic_dialog_add"
            app:backgroundTint="@color/exerciseTabFAB"/>
    </LinearLayout>

</RelativeLayout>

Could somebody help me please? Thanks a lot!

[BipinBhandari]

I solved this issue by setting mBottomBar.noNavBarGoodness();

like this

        mBottomBar = BottomBar.attach(this, savedInstanceState);

        mBottomBar.useOnlyStatusBarTopOffset();
        mBottomBar.noNavBarGoodness();
        mBottomBar.noTabletGoodness();

[mubarak1361]

@Kiran89kumar set app:bb_showShadow=“false” in 2.+ version