android tabwidget need help

Hello all this is my code for the tab layout in to android i want them in to bottom of the scrren currently it shows me at top of the screen

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="fill_parent"
    android:layout_height="fill_parent" android:layout_alignParentBottom="true"
    android:gravity="bottom">
    <TabHost 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">
            <HorizontalScrollView android:scrollbars="none"
                android:layout_width="fill_parent" android:layout_height="wrap_content">
                <TabWidget android:id="@android:id/tabs"
                    android:layout_alignParentBottom="true" android:layout_width="fill_parent"
                    android:layout_height="wrap_content" />
            </HorizontalScrollView>
            <FrameLayout android:id="@android:id/tabcontent"
                android:layout_width="fill_parent" android:layout_height="fill_parent"
                android:padding="5dp" />
        </LinearLayout>
    </TabHost>
</LinearLayout>

tab.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" android:layout_height="fill_parent"
    android:background="@drawable/tab_background_selector" android:gravity="center"
    android:orientation="vertical" android:padding="5dp"
    android:layout_alignParentBottom="true" >
    <ImageView android:id="@+id/tab_icon" android:layout_width="30dp"
        android:layout_height="30dp" android:scaleType="fitCenter" />
    <TextView android:id="@+id/tab_text" android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:singleLine="true"
        android:textStyle="bold" android:gravity="center_horizontal"
        android:textSize="10sp" android:padding="3dip" android:ellipsize="marquee"
        android:textColor="@drawable/tab_text_selector"
        android:layout_alignParentBottom="true" />
</LinearLayout>

this is my activity class TestActivity.java

import android.app.TabActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.TabHost;
import android.widget.TextView;
import android.widget.TabHost.TabSpec;

public class TestActivity extends TabActivity {
        @Override
    public void onCreate(Bundl开发者_如何学编程e savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.maiin);  
         final TabHost tabHost = (TabHost) getTabHost();
            tabHost.addTab(createTab(MobiintheMorningActivity.class, 
                    "Welcome", "Welcome", R.drawable.icon));      

            tabHost.setCurrentTab(0);
            tabHost.getTabWidget().getChildAt(0).getLayoutParams().width = 85;
            }

        private TabSpec createTab(final Class<?> intentClass, final String tag, 
                final String title, final int drawable)
        {
            final Intent intent = new Intent().setClass(this, intentClass);

            final View tab = LayoutInflater.from(getTabHost().getContext()).
                inflate(R.layout.tab, null);
            ((TextView)tab.findViewById(R.id.tab_text)).setText(title);
            ((ImageView)tab.findViewById(R.id.tab_icon)).setImageResource(drawable);

            return getTabHost().newTabSpec(tag).setIndicator(tab).setContent(intent);
        }
    }

here i've used android:layout_alignParentBottom="true" but no effects at all what should i do? what thing i am missing? thanks in advance :Pragna

See the solution to put the tab bar at the bottom.

Change the position of FrameLayout and widget in your xml.I think that my help you