listView采用vprogressDIalog加载数据

public class SoftwarePassionView extends ListActivity{
    
    private ProgressDialog m_ProgressDialog = null; 
    private ArrayList<Order> m_orders = null;
    private OrderAdapter m_adapter;
    private Runnable viewOrders;
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        m_orders = new ArrayList<Order>();
        this.m_adapter = new OrderAdapter(this, R.layout.row, m_orders);
        setListAdapter(this.m_adapter);
        
        viewOrders = new Runnable(){
            @Override
            public void run() {
                getOrders();
            }
        };
        Thread thread =  new Thread(null, viewOrders, "MagentoBackground");
        thread.start();
        m_ProgressDialog = ProgressDialog.show(SoftwarePassionView.this,    
              "Please wait...", "Retrieving data ...", true);
    }
    private Runnable returnRes = new Runnable() {

        @Override
        public void run() {
            if(m_orders != null && m_orders.size() > 0){
                m_adapter.notifyDataSetChanged();
                for(int i=0;i<m_orders.size();i++)
                m_adapter.add(m_orders.get(i));
            }
            m_ProgressDialog.dismiss();
            m_adapter.notifyDataSetChanged();
        }
    };

private void getOrders(){
          try{
              m_orders = new ArrayList<Order>();
              Order o1 = new Order();
              o1.setOrderName("SF services");
              o1.setOrderStatus("Pending");
              Order o2 = new Order();
              o2.setOrderName("SF Advertisement");
              o2.setOrderStatus("Completed");
              m_orders.add(o1);
              m_orders.add(o2);
              Thread.sleep(5000);
              Log.i("ARRAY", ""+ m_orders.size());
            } catch (Exception e) { 
              Log.e("BACKGROUND_PROC", e.getMessage());
            }
            runOnUiThread(returnRes);
        }
    private class OrderAdapter extends ArrayAdapter<Order> {

        private ArrayList<Order> items;

        public OrderAdapter(Context context, int textViewResourceId, ArrayList<Order> items) {
                super(context, textViewResourceId, items);
                this.items = items;
        }
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
                View v = convertView;
                if (v == null) {
                    LayoutInflater vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                    v = vi.inflate(R.layout.row, null);
                }
                Order o = items.get(position);
                if (o != null) {
                        TextView tt = (TextView) v.findViewById(R.id.toptext);
                        TextView bt = (TextView) v.findViewById(R.id.bottomtext);
                        if (tt != null) {
                              tt.setText("Name: "+o.getOrderName());                            }
                        if(bt != null){
                              bt.setText("Status: "+ o.getOrderStatus());
                        }
                }
                return v;
        }
}
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="?android:attr/listPreferredItemHeight"
    android:padding="6dip">
    <ImageView
        android:id="@+id/icon"
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"
        android:layout_marginRight="6dip"
        android:src="@drawable/icon" />
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="0dip"
        android:layout_weight="1"
        android:layout_height="fill_parent">
        <TextView
            android:id="@+id/toptext"
            android:layout_width="fill_parent"
            android:layout_height="0dip"
            android:layout_weight="1"
            android:gravity="center_vertical"
        />
        <TextView
            android:layout_width="fill_parent"
            android:layout_height="0dip"
            android:layout_weight="1" 
            android:id="@+id/bottomtext"
            android:singleLine="true"
            android:ellipsize="marquee"
        />
    </LinearLayout>
</LinearLayout>

<?xml version  = 
 "1.0" encoding 
 = 
 "utf-8" 
 ?> 
 
<resources  > 
 
     <string name 
 = 
 "hello" 
 >Hello World, SoftwarePassionView 
 !</string 
 > 
 
     <string name 
 = 
 "app_name" 
 >Software Passion 
 </string 
 > 
 
     <string name 
 = 
 "main_no_items" 
 >No orders to display 
 </string 
 > 
 
</resources  >

<?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/android:list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
<TextView
android:id="@+id/android:empty"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="@string/main_no_items"/>
</LinearLayout>