加载所有自带的图片

public class DrawablePreviewActivity extends ListActivity 
{ 
    private static final String TAG = "DrawablePreviewActivity"; 
 
    public void onCreate(Bundle savedInstanceState) 
    { 
        super.onCreate(savedInstanceState); 
 
        setTitle("Preview of android.R.drawable.*"); 
 
        try { 
            Class RClass = Class.forName("android.R"); 
 
            Class[] subclasses = RClass.getDeclaredClasses(); 
 
            Class RDrawable = null; 
 
            for(Class subclass : subclasses) { 
                if("android.R.drawable".equals(subclass.getCanonicalName())) { 
                    RDrawable = subclass; 
                    break; 
                } 
            } 
 
            List<Map<String, Object>> drinfo = new ArrayList<Map<String, Object>>(); 
 
            Field[] drawables = RDrawable.getFields(); 
            for(Field dr : drawables) { 
                Map<String, Object> map = new HashMap<String, Object>(); 
                Drawable img = getResources().getDrawable(dr.getInt(null)); 
 
                map.put("drimg", dr.getInt(null)); 
                map.put("drname", dr.getName()); 
 
                drinfo.add(map); 
            } 
 
            setListAdapter(new SimpleAdapter(this, 
                            drinfo, 
                            R.layout.listitem, 
                            new String[] { "drimg", "drname" }, 
                            new int[] { R.id.drimg, R.id.drname })); 
 
        } catch(IllegalAccessException iae) { 
            Log.e(TAG, iae.toString()); 
        } catch(ClassNotFoundException cnfe) { 
            Log.e(TAG, cnfe.toString()); 
        } 
    } 
}

源码下载

http://www.altcanvas.com/downloads/drawablepreview.tar.gz