Question

I wrote a simple Android program with 2 tabs. Tab 1 has a button which will open a new window. But I realized that when opening this new window, the Android tab bar will be hidden.

I’d like to always show the Android tab bar when new activity starts ie show tab bar for all activity

Answer 1

Basicly, you need to create framelayout, which will host your new activities.

Here is tabs.xml

<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/tabhost"
    android:layout_width="fill_parent"
    android:orientation="vertical"
    android:layout_height="fill_parent">
   <ScrollView
      android:id="@+id/ScrollView01"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:scrollbars="vertical"
      android:background="@drawable/bbg">
      <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"
            android:background="#000000"/>
         <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"/>
      </LinearLayout>
   </ScrollView>
</TabHost>

And here is TabsActivity:

   @Override
   public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.tabs);

      Resources res = getResources(); 
      TabHost tabHost = getTabHost();  
      TabHost.TabSpec spec;  
      Intent intent;  
      intent = new Intent().setClass(this, RegistrationActivity.class);
      spec = tabHost.newTabSpec("registration").setIndicator("Регистрация",
                        res.getDrawable(R.drawable.ic_tab_registration))
                        .setContent(intent);
      tabHost.addTab(spec);
      intent = new Intent().setClass(this, LoginActivity.class);
      spec = tabHost.newTabSpec("login").setIndicator("Логин",
            res.getDrawable(R.drawable.ic_tab_login))
        .setContent(intent);
      tabHost.addTab(spec);
      tabHost.setCurrentTab(0);


   }

this example will create 2 tabs, and 2 activities. Tap on any tap will start activity. Tabs will be always on top of screen.

UPD.

ActivityGroups may help you
http://blog.henriklarsentoft.com/2010/07/android-tabactivity-nested-activities/