Unable to have two pane mode for tablet in android

I am trying to get a two pane display for the android tablet I was trying to test the application on a emulator (Nexus 10). I created an activity_man.xml for the same (in folder layout-sw600dp). It contains a FrameLayout exclusive to it with the android:id="@+id/movie_detail_container" as mentioned below.

  activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:baselineAligned="false"
    android:divider="?android:attr/dividerHorizontal"
    android:orientation="horizontal"
    tools:context="akshit.android.com.popularmovies.MainActivity">

    <!--
    This layout is a two-pane layout for the Items master/detail flow.
    -->

    <fragment
        android:id="@+id/fragment_movie_main"
        android:name="akshit.android.com.popularmovies.MainActivityFragment"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="2"
        tools:layout="@android:layout/list_content" />

    <FrameLayout
        android:id="@+id/movie_detail_container"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="4" />

</LinearLayout>

Based on this, I had a check that if the view contains the id, I should have mTwoPane = true as well as launch DetailFragment(to support the movie_details_container). However mTwoPane is staying as false.

public class MainActivity extends AppCompatActivity {
    private static final String DETAILFRAGMENT_TAG = "DFTAG";

    boolean mTwoPane = false;
    public static String TAG = MainActivity.class.getSimpleName();

    @Override
    protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        if (findViewById(R.id.movie_detail_container) != null) {
            mTwoPane = true;
            Log.i(TAG, "mTwoPane value=" + mTwoPane);
            if (savedInstanceState == null) {
                getSupportFragmentManager().beginTransaction()
                        .replace(R.id.movie_detail_container, new DetailsActivityFragment(), DETAILFRAGMENT_TAG)
                        .commit();
            }
        } else {
            mTwoPane = false;
            Log.i(TAG, "mTwoPane value=" + mTwoPane);

        }

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();

        if (id == R.id.action_settings) {
            Intent intent = new Intent(getApplicationContext(), SettingsActivity.class);
            startActivity(intent);
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

Please help me figuring out as where am I going wrong.

Create new virtual device without frame. AVD Manager->create virtual device->tablet->nexus 10 ->next -> select sdk ->next -> uncheck "enable device frame"

If it helped please mark as answered.