0
我有一个Cursor
,它从我的数据库中获取一些类别,但我需要手动添加一个不在数据库中的类别,因此它们都可以在ListViewActivity
中呈现。 我得到的类别的方法如下:手动将元素添加到光标
Cursor categories = myDbHelper.getCategoriesCursor(
categorySelected, Tools.getLanguage());
startManagingCursor(categories);
CategoriesCursorAdapter categoriesAdapter = new CategoriesCursorAdapter(
getApplicationContext(), categories);
setListAdapter(categoriesAdapter);
我想创建一个新的ArrayList<String>
与我的栏目,并把它传递给Adapter
,但仍,我无法抓住这些值,并将其添加到列表中的categories
。
我该怎么做?
感谢很多提前
编辑:这,就是以“我的DatabaseHelper”
public Cursor getCategoriesCursor(int parentId, int language) {
try {
String sql = "";
if (parentId == 0) {
sql = "SELECT 0 as '_id', 'Agenda' as 'name_category', 0 as 'sort' UNION ALL SELECT categories._id, name_categories.name_category, categories.sort "
+ "FROM categories JOIN name_categories ON categories._id = name_categories.category_id "
+ "WHERE categories.parent_id = " + parentId
+ " AND name_categories.language_id = " + language + " ORDER BY sort";
} else {
sql = "SELECT categories._id, name_categories.name_category "
+ "FROM categories JOIN name_categories ON categories._id = name_categories.category_id "
+ "WHERE categories.parent_id = "
+ parentId
+ " AND name_categories.language_id = " + language + " ORDER BY sort";
}
Log.d("XS2TheWorld", sql);
return myDataBase.rawQuery(sql, null);
} catch (Exception e) {
try {
copyDataBase();
} catch (IOException e1) {
e1.printStackTrace();
}
return getCategoriesCursor(parentId, language);
}
}
它可能对我们看到你的'myDbHelper'有用。 – prolink007 2012-08-17 13:20:35
可能MergeAdapter可以为您的问题提供明确的解决方案 - checkout https://github.com/commonsguy/cwac-merge – sandrstar 2012-08-17 13:38:44