Why android.support.v4.app.FragmentTabHost is not rendered in Android XML Graphical Layout?

Question

Problem

android.support.v4.app.FragmentTabHost is not displayed in Graphical Layout of Android XML.

Error Image

XML Code Snippets

<android.support.v4.app.FragmentTabHost
    android:id="@android:id/tabhost"
    android:layout_width="match_parent"
    android:layout_height="64dp" >

   <FrameLayout
       android:id="@android:id/tabcontent"
       android:layout_width="0dp"
       android:layout_height="0dp"
       android:layout_weight="0" />
</android.support.v4.app.FragmentTabHost>

Request/Conclusion

If any solution for this problem then please share.
If I need to change in eclipse then also give suggestion.
Thank you.