添加桌面快捷图库

 添加桌面快捷图库：

在目录android4.0\packages\apps\Launcher2\res\xml的default_workspace.xml的文件中做如下布局：

    <appwidget
        launcher:packageName="com.android.gallery3d"
        launcher:className="com.android.gallery3d.gadget.PhotoAppWidgetProvider"
        launcher:screen="3"     //第几屏幕
        launcher:x="0"                //x坐标
       launcher:y="0"                //坐标
       launcher:spanX="4"       //
      launcher:spanY="3" />  //

然后在文件Gallery2\src\com\android\gallery3d\gadget\PhotoAppWidgetProvider.java中添加如下代码

   public void onUpdate(Context context,
            AppWidgetManager appWidgetManager, int[] appWidgetIds) {
        WidgetDatabaseHelper helper = new WidgetDatabaseHelper(context);
        try {
            for (int id : appWidgetIds) {
                Entry entry = helper.getEntry(id);
                if (entry != null) {
                    RemoteViews views = buildWidget(context, id, entry);
                    appWidgetManager.updateAppWidget(id, views);
                } else {
           //xbshi>>>>>>>>>
         
{
          //  WidgetDatabaseHelper helper = new WidgetDatabaseHelper(this);
                helper.setWidget(id, WidgetDatabaseHelper.TYPE_SHUFFLE, null);
                RemoteViews views = buildWidget(context, id, helper.getEntry(id));
                     appWidgetManager.updateAppWidget(id, views);
 }
//xbshi<<<<<<<<<<<<
                    Log.e(TAG, "#################cannot load widget: " + id);
                }
            }
        } finally {
            helper.close();
        }
        super.onUpdate(context, appWidgetManager, appWidgetIds);
    }