Two questions about android!!!

See more:

Mobile

Android

Eclipse

Hello everybody!
First question is about how to pass java file(not xml) like attribute through xml?
For example:

<com.ares.tabhost.TabPage
       android:id="@+id/textView4" android:text="Tab 2"
        android:layout_width="fill_parent" android:layout_height="fill_parent"
         android:background="@drawable/background_states"
         customAttrs:TabHost_textColor="#C0F"
        //Need to pass MYACTIVITY.java 
         customAttrs:TabHost_LinkToActivity="@src/MYACTIVITY.java" 
        //if I pass @layout/someXMLfile - it works great!
        />

And second question is how to locate Activity into ViewGroup? I found solution, but it doesn't work!

void createInnerActivity(ViewGroup container, Class<?> activityClass)
{
        if (container.getChildCount() != 0) {
            container.removeViewAt(0);
        }
android.app.ActivityGroup ag = new ActivityGroup(true);
        final Intent intent = new Intent(this, activityClass);
        final Window window =ag.
getLocalActivityManager().startActivity(activityClass.toString(),
intent); //Error occured (activities can't be added until the containing group has been created)
        container.addView(window.getDecorView(), new
ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT,
                ViewGroup.LayoutParams.FILL_PARENT));

} 

Help me, please!