ListView使用两个cursoradapters？

Question

我有一些代码对数据库执行两个查询并返回两个游标对象.有没有什么方法可以将这两个游标组合起来,以便所有游戏都ListView可以获取数据？

Answer 1

有MergeCursor(如果没有办法连接表格).

Answer 2

仅供参考 - 使用MergeCursor()的示例

c = Contacts.CONTENT_URI中包含Contacts列的游标

private Cursor mergeCursorSubset(Cursor c) {

    int userMobile = ContactsContract.CommonDataKinds.Phone.TYPE_MOBILE,
        workMobile = ContactsContract.CommonDataKinds.Phone.TYPE_WORK_MOBILE;

    String storedNumber = ContactsContract.CommonDataKinds.Phone.NUMBER,
            displayName =ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
            numberType = ContactsContract.CommonDataKinds.Phone.TYPE,
            contactKey = ContactsContract.CommonDataKinds.Phone.LOOKUP_KEY,
            whereClausePre = contactKey+" = '",
            whereClausePost = "AND ("+numberType+" = '"+userMobile+"' OR "+numberType+" = '"+workMobile+"'";


    Uri lookupUri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;;

    Cursor [] m = new Cursor[c.getCount()]; 

    if (c.moveToFirst())
        for (int k = 0; k<c.getCount();k++){            
            //Find the mobile numbers
            Cursor u = this.getContentResolver().query(lookupUri,
                                                    new String[]{displayName, storedNumber, numberType}
                                                    , whereClausePre+c.getString(c.getColumnIndex(Contacts.LOOKUP_KEY))+"') " 
                                                        + whereClausePost, null, null);
            int i = 0;
            if (u.moveToFirst())
                m[i++] = u;

        } //for Each key

    return new MergeCursor(m);

}