I have an Android app that uses TabHost. The problem is when I press back button in submenu of tab2 the app go to tab2. i want if Back Pressed, user go to tab 1, Please Help Me, thx
My TabHost Class :

```
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState);
    host = this.getTabHost();

    host.addTab(host.newTabSpec("one")
            .setIndicator("Home", getResources().getDrawable(R.drawable.home) )
            .setContent(new Intent(this, tab1.class))); 

    host.addTab(host.newTabSpec("two")
            .setIndicator("Master", getResources().getDrawable(R.drawable.master_data))
            .setContent(new Intent(this, tab2.class)));
    host.addTab(host.newTabSpec("tree")
            .setIndicator("P.O.S", getResources().getDrawable(R.drawable.pos))
            .setContent(new Intent(this, tab3.class)));
    host.addTab(host.newTabSpec("four")
            .setIndicator("Report", getResources().getDrawable(R.drawable.report))
            .setContent(new Intent(this, tab4.class)));
    host.addTab(host.newTabSpec("five")
            .setIndicator("CSM", getResources().getDrawable(R.drawable.transfer))
            .setContent(new Intent(this, tab5.class)));
}

```