刚刚接手一个备份系统浏览器书签的模块，现在把代码贴出来，另外有几点疑问请路过的大神指教

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();