android获取系统自带浏览器书签

1、根据官方api应该是有以下几个字段是可以获取的

       但是除了TITLE和URL能获取其他的都会报java.lang.IllegalStateException: Couldn‘t read row 0, col -1 from CursorWindow.  Make sure the Cursor is initialized correctly before accessing data from it.异常

   2、是不是只能获得系统自带浏览器书签？如果我装的是百度或其他浏览器建的书签是不是就得不到了？

以下是我的代码片段

// 按访问时间排序
		String orderBy = Browser.BookmarkColumns.VISITS + " DESC";
		// flag=1表示书签
		String whereClause = Browser.BookmarkColumns.BOOKMARK + " = 1 ";
		ContentResolver cr = context.getContentResolver();
		Cursor cursor = cr.query(Browser.BOOKMARKS_URI,
				Browser.HISTORY_PROJECTION, whereClause, null, orderBy);
		

		while (cursor != null && cursor.moveToNext()) {
			BookMark bookMark = new BookMark();
			// TODO 可能为空的字段
//			String id = cursor.getString(cursor
//					.getColumnIndex(Browser.BookmarkColumns._ID));
//			if (id != null)
//				bookMark.set_id(id);
//
//			String count = cursor.getString(cursor
//					.getColumnIndex(Browser.BookmarkColumns._COUNT));
//			if (count != null)
//				bookMark.set_count(count);

			String title = cursor.getString(cursor
					.getColumnIndex(Browser.BookmarkColumns.TITLE));
			if (title != null)
				bookMark.setTitle(title);

			String url = cursor.getString(cursor
					.getColumnIndex(Browser.BookmarkColumns.URL));
			if (url != null)
				bookMark.setUrl(url);
			byte[] b = cursor.getBlob(cursor
					.getColumnIndex(Browser.BookmarkColumns.FAVICON));
			if (b != null) {
				bookMark.setFavicon((BitmapFactory.decodeByteArray(b, 0,
						b.length)));
			} else {
				bookMark.setFavicon(null);
			}
			
//			bookMark.setCreated(cursor.getString(cursor
//					.getColumnIndex(Browser.BookmarkColumns.CREATED)));
//			bookMark.setDate(cursor.getString(cursor
//					.getColumnIndex(Browser.BookmarkColumns.DATE)));
//			bookMark.setVisits((cursor.getString(cursor
//					.getColumnIndex(Browser.BookmarkColumns.VISITS))));
//			bookMarks.add(bookMark);
			bookMarks.add(bookMark);
		}
		
		cursor.close();
		JSONObject jso = listTojsoJsonObject(bookMarks);
		return jso.toString();