Android How do I add some floating button over my custom ListView?

I have done my custom ListView, the xml was following:

<?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">
  <ListView android:id="@+id/list" android:layout_width="1px" android:layout_height="1px" android:layout_weight="1"></ListView>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent">
      <ImageView a开发者_StackOverflow中文版ndroid:id="@+id/img" android:layout_width="26px" android:layout_height="30px" />
      <TextView android:id="@+id/title" android:layout_width="248dp" android:layout_height="wrap_content" android:textStyle="bold" android:paddingLeft="6dp" android:textSize="20sp" />
      <ImageButton android:id="@+id/cat_icon" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="4dp" android:layout_marginRight="2dp" />
      <ImageButton android:id="@+id/act_icon" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="4dp" />
  </LinearLayout>
</LinearLayout>

' And code is

public class MyListActivity extends ListActivity
{
  protected void onCreate(Bundle savedInstanceState)
  {
    Log.i("MyApp", "ON List create......");
    super.onCreate(savedInstanceState);
    List<BeanObj> list=...//Do something to fill list
    setListAdapter(new MyListViewAdapter(context, R.layout.item_view, list));
  }

  public class MyListViewAdapter extends ArrayAdapter<List<BeanObj>>
  {
    private List<BeanObj> hList=null;
    public MyListViewAdapter(Context context, int textViewResourceId, List hList)
    {
      super(context, textViewResourceId, hList);
      this.hList=hList;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent)
    {
      final BeanObj bean=this.hList.get(position);
      LayoutInflater inflater=getLayoutInflater();
      View row=inflater.inflate(R.layout.item_view, parent, false);
      // Do something to fill ListView
      return row;
    }
  }
}

I did try to add a button on it, but I got each button on each row of list view...

What can I do on xml to add floating button over my custom list view ? Or, I caeate another xml layout file below:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_gravity="left|top">
  <Button android:id="@+id/btnLogout" android:layout_width="wrap_content" android:layout_height="40dp" android:text="@string/buttonLogout" />
  <View android:layout_width="75dp" android:layout_height="40dp" />
  <Button android:id="@+id/btnList" android:layout_width="wrap_content" android:layout_height="40dp" android:text="@string/buttonList" />
  <Button android:id="@+id/btnSearch" android:layout_width="wrap_content" android:layout_height="40dp" android:text="@string/buttonSearch" />
</LinearLayout>

How did I to use it via addHeaderView or addFooterView method ?

You need to add the header and the footer before setting the ListAdapter for the list. From the docs:

NOTE: Call this before calling setAdapter. This is so ListView can wrap the supplied cursor with one that will also account for header and footer views.

Also inflating your views in the getView method is not the most optimum way. You need to use a static class for storing the reference to the inflated view. Check out this talk to correctly set up the views.