底部导航栏框架（BottomTabBarde使用）

添加依赖

implementation 'com.android.support:design:26.1.0'
compile 'com.hjm:BottomTabBar:1.1.1'

布局

<com.hjm.bottomtabbar.BottomTabBar
android:id= "@+id/bottom_tab_bar"
android:layout_width= "match_parent"
android:layout_height= "match_parent"
xmlns:hjm= "http://schemas.android.com/apk/res-auto"
hjm:tab_img_height= "25dp"
hjm:tab_img_width= "25dp"
hjm:tab_isshow_divider= "true"
hjm:tab_padding_bottom= "2dp"
hjm:tab_selected_color= "#000000"
hjm:tab_unselected_color= "#989ea7"
>
</com.hjm.bottomtabbar.BottomTabBar>

//在主线程实现

//创建BottomTabBar控件
BottomTabBar bottomTabBar=findViewById(R.id.bottom_tab_bar);
//设置底部导航文字图片和Fragment
bottomTabBar.init(getSupportFragmentManager())
//第一个参数放文字，第二个参数放图片，第三个参数放Fragment
.addTabItem( "首页", R.drawable.bottom_shou,Fragment_Home.class)
.addTabItem( "关注", R.drawable.bottom_guanzhu, Fragment_Focus.class)
.addTabItem( "添加", R.drawable.jia2, Fragment3.class)
.addTabItem( "消息", R.drawable.bottom_xiaoxi, Fragment_information.class)
.addTabItem( "我的", R.drawable.bottom_wode, Fragment_my.class);