BottomBar的使用

implementation'com.roughike:bottom-bar:2.3.1'

相对于的版本:implementation'com.android.support:appcompat-v7:26.1.0'

bottombar使用的方法:

1.两个xml页面

    android:id="@+id/bottomBar"

    android:layout_width="match_parent"

    android:layout_height="60dp"

    android:layout_alignParentBottom="true"

    app:bb_tabXmlResource="@xml/bottombar_tabs" />

        id="@+id/tab_home"

        icon="@mipmap/ic_bottom_home_icon"

        title="首页" />

        id="@+id/tab_mv"

        icon="@mipmap/ic_bottom_mv_unselect"

        title="MV" />

        id="@+id/tab_vbang"

        icon="@mipmap/ic_bottom_vlist_unselect"

        title="V榜" />

        id="@+id/tab_yuedan"

        icon="@mipmap/ic_bottom_mvlist_unselect"

        title="悦单" />

2.  fragment控制:

class FragmentUtilprivate constructor(){

val homeFragment by lazy { HomeFragment()}

    val mvFragment by lazy { MvFragment()}

    val vbangFragment by lazy { VBangFragment()}

    val yuedanFragment by lazy { YueDanFragment()}

    companion object {

val fragmentUtil by lazy { FragmentUtil()}

    }

fun getFragment(tabId:Int): BaseFragment?{

when(tabId){

R.id.tab_home->return homeFragment

            R.id.tab_mv->return mvFragment

            R.id.tab_vbang->return vbangFragment

            R.id.tab_yuedan->return yuedanFragment

        }

return null

    }

}

3.mainactivity

override fun initListener() {

bottomBar.setOnTabSelectListener{

        val transaction =supportFragmentManager.beginTransaction()

transaction.replace(R.id.container, FragmentUtil.fragmentUtil.getFragment(it),it.toString())

transaction.commit()

}

}