Android : Tab Host Align text center vertically not working in Android

Tab Host Plain text only(no image) with vertical center not working. I tried bellow code, but no luck. Please any one can help me.

AndroidTabLayoutActivity.java

setContentView(R.layout.main);
TabHost tabHost = getTabHost();
TabSpec photospec = tabHost.newTabSpec("Photos");
photospec.setIndicator("Photos");
Intent photosIntent = new Intent(this, PhotosActivity.class);
photospec.setContent(photosIntent);
tabHost.addTab(photospec);

main.xml

<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/tabhost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">
        <TabWidget
            android:id="@android:id/tabs"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" />
        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"/>
    </LinearLayout>
</TabHost>

i want this urgently. Thanks for advance.