Question

以下是使用LoadManager的示例 http://developer.android.com/reference/android/app/LoaderManager.html

分段适配器的示例是

私有类SectionAdapter扩展了SectionedAdapter {

@Override
protected View getHeaderView(String caption, int index,
                             View convertView, ViewGroup parent) {
    TextView tv = new TextView(LazySectionListActivity.this);
    tv.setText(caption);
    return tv;
}

}

我的LoadManager问题是我无法从单独的游标中获取日期:(，即我需要使用来自两个单独游标的数据填充列表视图，它们应该在列表视图中与一些标题分开（就像分段适配器一样）

如何使用LoadManager

在同一列表视图中显示来自单独游标的数据

到目前为止，我设法在onCreateLoader方法中仅使用一个游标来制作可行的示例

   public Loader<Cursor> onCreateLoader(int id, Bundle args) {
        Uri baseUri;
            baseUri = Contacts.CONTENT_URI;

        String select = "((" + Contacts.DISPLAY_NAME + " NOTNULL) AND ("
                + Contacts.HAS_PHONE_NUMBER + "=1) AND ("
                + Contacts.DISPLAY_NAME + " != '' ))";
        return new CursorLoader(getActivity(), baseUri,
                CONTACTS_SUMMARY_PROJECTION, select, null,
                Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC");
    }

但我需要显示来自两个单独游标的数据

我知道我不能有两个返回语句，但我试图说明我不知道如何解决它的问题

public Loader<Cursor> onCreateLoader(int id, Bundle args) {
        Uri baseUri;
            baseUri = Contacts.CONTENT_URI;

        String select = "((" + Contacts.DISPLAY_NAME + " NOTNULL) AND ("
                + Contacts.HAS_PHONE_NUMBER + "=1) AND ("
                + Contacts.DISPLAY_NAME + " != '' ))";
        return new CursorLoader(getActivity(), baseUri,
                CONTACTS_SUMMARY_PROJECTION, select, null,
                Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC");
//beside the first cursor data that I want to be displayed 
//I also want the date from the second cursor 
        Uri baseUri2;
            baseUri = "some other uri";

        String select2 = "some other select";
        return new CursorLoader(getActivity(), baseUri2,
                        projection, select2, null,
                MyClass.BlaBla + " COLLATE LOCALIZED ASC");
    }

如何使用LoadManager创建分段适配器

0 个答案: