I am writing a app for android 1.5. I want to use a complex listview to display my data. I want to show a ImageView of a drawable object in my List item.

I learned from a demo:

------> listData.put("Img", listData.put("Img", R.drawable.XXX));
            listData.put("Time", "100");
            listItems.add(listData);

It can display correctly, however, I want to change Img at runtime, The image maybe generated at run-time, so I change the code as follow, but it falls. Can anyone help me ? many thanks!

protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.item_list);
    itemListView = (ListView) findViewById(R.id.listview);
         ArrayList<HashMap<String, Object>> listItems = new ArrayList<HashMap<String, Object>>();
         for(int i = 0;i <XXX.size(); ++i)
         {
            HashMap<String, Object> listData = new HashMap<String, Object>();
--------->          1)  listData.put("Img", new Drawable(XXX));
            2)  listData.put("Time", "100");
            3)  listItems.add(listData);
         }
        SimpleAdapter listItemAdapter = new SimpleAdapter(this, listItems,
                R.layout.listitem,
                new String[] { "Img", "Time"},
                new int[] { R.id.listitem_img, R.id.listitem_time });
        itemListView.setAdapter(listItemAdapter);



listitem.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 
    android:layout_width="fill_parent" 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="wrap_content" 
    android:paddingBottom="4dip"
    android:paddingLeft="12dip" 
    android:paddingRight="12dip">
    <ImageView 
        android:paddingTop="12dip" 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" 
        android:id="@+id/listitem_img" />
    <TextView  
        android:layout_height="wrap_content"
        android:textSize="20dip" 
        android:layout_width="wrap_content"
        android:id="@+id/listitem_time" />

</LinearLayout>