request focus on imageview in fragment

Question

I am developing app for Android TV. In app there is a fragment layout that has four ImageView in LinearLayout horizontal direction and a RecyclerView that is below on LinearLayout. When I launch app and navigate through DPAD control then RecyclerView navigate up and down. Requirement is that when fragment launch by default first ImageView of LinearLayout would be selected. After when we press right button of DPAD then next ImageView would be select. When we press down key then focus will move on RecyclerView. When focus will on RecyclerView first child and we press Up key then focus move on first Imageview of LinearLayout.

I have also use imageview.requestFocus() but it is not working. Please help me.

Below is my layout file

<RelativeLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

<LinearLayout 
       android:id="@+id/home_fragment_menu_container"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:orientation="horizontal"
       android:layout_marginLeft="30dp"
       android:layout_marginRight="30dp"
       android:layout_marginBottom="10dp">


       <ImageView 
           android:id="@+id/img_playall"
           style="@style/home_fragment_menu"
           android:src="@drawable/play_all"
           android:focusable="true"
           android:focusableInTouchMode="true"/>

       <ImageView 
           android:id="@+id/img_trending"
           style="@style/home_fragment_menu"
           android:src="@drawable/trending"/>

       <ImageView 
           android:id="@+id/img_search"
           style="@style/home_fragment_menu"
           android:src="@drawable/search"/>

       <ImageView 
           android:id="@+id/img_setting"
           style="@style/home_fragment_menu"
           android:src="@drawable/settings"/>    
   </LinearLayout>


   <LinearLayout 
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       android:layout_below="@+id/home_fragment_menu_container"
       android:layout_marginLeft="45dp"
       >

     <android.support.v7.widget.RecyclerView
           android:id="@+id/vertical_recyclerview"
           android:layout_width="match_parent"
           android:layout_height="match_parent"
           />

   </LinearLayout>
</RelativeLayout>

Below is fragment.java file

public class HomeFragment extends Fragment {

    private static final String TAG = "HomeFragment";

    ImageView playAllImage, trendingImage, searchImage, settingImage;



    Context context;
    RecyclerView verticalList;
    ArrayList<ArrayList<VideoContentModel>> categoriesVideoList;
    ArrayList<CategoryModel> categoryDataList;

    public static HomeFragment newInstance(Context context, ArrayList<ArrayList<VideoContentModel>> categoriesVideoList,
            ArrayList<CategoryModel> categoryDataList){

        HomeFragment fragment = new HomeFragment();
        fragment.context = context;
        fragment.categoriesVideoList = categoriesVideoList;
        fragment.categoryDataList = categoryDataList;

        return fragment;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.home_fragment_layout, container, false);

        playAllImage = (ImageView)view.findViewById(R.id.img_playall);
        trendingImage = (ImageView)view.findViewById(R.id.img_trending);
        searchImage = (ImageView)view.findViewById(R.id.img_search);
        settingImage = (ImageView)view.findViewById(R.id.img_setting);

        playAllImage.requestFocus();


        verticalList = (RecyclerView)view.findViewById(R.id.vertical_recyclerview);
        verticalList.setHasFixedSize(true);
        verticalList.setLayoutManager(new LinearLayoutManager(context));
        CatListVerticalAdapter adapter = new CatListVerticalAdapter(context,categoriesVideoList,categoryDataList);
        verticalList.setAdapter(adapter);

        verticalList.clearFocus();



        //


        if(playAllImage.hasFocus())
            Log.i(TAG,"play all has focus");
        else
            Log.i(TAG,"===playall has not focus");

        return view;
    }

How we navigate through DPAD above requirement? Please help me..