activity_bottom_bar_layout_demo.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >

    <android.support.v4.view.ViewPager
        android:id="@+id/vp_content"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        ></android.support.v4.view.ViewPager>

    <com.chaychan.viewlib.bottombarlayout.BottomBarLayout
        android:id="@+id/bbl"
        android:layout_width="match_parent"
        android:layout_height="56dp"
        android:orientation="horizontal"
        android:gravity="center"
        android:layout_gravity="center"
        android:background="@color/tab_gb"
        >

        <com.chaychan.viewlib.bottombarlayout.BottomBarItem
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="match_parent"
            app:iconNormal="@mipmap/tab_home_normal"
            app:iconSelected="@mipmap/tab_home_selected"
            app:itemText="首页"
            app:textColorNormal="@color/tab_normal_color"
            app:textColorSelected="@color/tab_selected_color"
            app:itemTextSize="10sp"
            app:itemMarginTop="0dp"
            />

        <com.chaychan.viewlib.bottombarlayout.BottomBarItem
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="match_parent"
            app:iconNormal="@mipmap/tab_video_normal"
            app:iconSelected="@mipmap/tab_video_selected"
            app:itemText="视频"
            app:textColorNormal="@color/tab_normal_color"
            app:textColorSelected="@color/tab_selected_color"
            app:itemTextSize="10sp"
            app:itemMarginTop="0dp"
            />


        <com.chaychan.viewlib.bottombarlayout.BottomBarItem
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="match_parent"
            app:iconNormal="@mipmap/tab_micro_normal"
            app:iconSelected="@mipmap/tab_micro_selected"
            app:itemText="微头条"
            app:textColorNormal="@color/tab_normal_color"
            app:textColorSelected="@color/tab_selected_color"
            app:itemTextSize="10sp"
            app:itemMarginTop="0dp"
            />

        <com.chaychan.viewlib.bottombarlayout.BottomBarItem
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="match_parent"
            app:iconNormal="@mipmap/tab_me_normal"
            app:iconSelected="@mipmap/tab_me_selected"
            app:itemText="我的"
            app:textColorNormal="@color/tab_normal_color"
            app:textColorSelected="@color/tab_selected_color"
            app:itemTextSize="10sp"
            app:itemMarginTop="0dp"
            />

    </com.chaychan.viewlib.bottombarlayout.BottomBarLayout>

</LinearLayout>