How to make a horizontal-switchable activities

I have an application about debts to user and user's debts. Main activity is TabActivity for switching two activities with custom lists.

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It looks like (screenshot): http://i.stack.imgur.com/qts1f.png

The code is:

public class MainActivity extends TabActivity {
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Resources res = getResources(); // Resource object to get Drawables
        TabHost tabHost = getTabHost();  // The activity TabHost
        TabHost.TabSpec spec;  // Resusable TabSpec for each tab
        Intent intent;  // Reusable Intent for each tab

        TextView tv = (TextView)findViewById(R.id.newDebtHeader);
        tv.setBackgroundResource(R.drawable.grad);
        tv.setTextColor(Color.BLACK);
        tv.setFadingEdgeLength(3);

        intent = new Intent().setClass(this, DebtsToMeList.class);

        spec = tabHost.newTabSpec("debts_to_me").setIndicator(null, res.getDrawable(R.drawable.ic_tab_debts_to_me)).setContent(intent);
        tabHost.addTab(spec);

        intent = new Intent().setClass(this, MyDebtsList.class);

        spec = tabHost.newTabSpec("my_debts").setIndicator(null, res.getDrawable(R.drawable.ic_tab_my_debts)).setContent(intent);
        tabHost.addTab(spec);

        tabHost.setCurrentTab(2);
    }
}

main.xml is:

<?xml version="1.0" encoding="utf-8"?>
 <Li开发者_如何转开发nearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="1dp">

    <TextView 
        android:id="@+id/newDebtHeader" 
        android:layout_height="24dip"
        android:layout_width="fill_parent"
        android:gravity="center_vertical|center_horizontal"
        android:textStyle="bold"
        android:textSize="16dip" 
        android:text="хДолги">
    </TextView> 
    <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"
            android:padding="5dp">
            <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"
                android:padding="5dp" />
        </LinearLayout>
    </TabHost>
</LinearLayout>
enter code here

But I don't like TabActivity, I want change this two lists by horizontal finger drag. Could you please help me change my code?

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If you look at this example, it uses the fling gesture with a view switcher and a little animation to get the effect I think that you are looking for... all that you would have to do is load your lists and then you should be able to swipe between them.

Hope this helps.

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It sounds to me like you want to utilize a Gallery, where the Gallery adapter creates your custom list views. Unfortunately this isn't as straightforward as it might seem. See Embedding ListView inside Gallery.