android-cursorloader

问题 I'm using ActiveAndroid ORM and UltimateRecyclerView in my Android application. I don't know how to display a data in a list using this popular libraries. I know, the data is saved to database correctly. Using the following method, I'm getting a cursor to the data I want to display. public Cursor eventsCursor() { // `Event` is an ActiveAndroid model class String query = new Select() .from(Event.class) .orderBy("time") .toSql(); return ActiveAndroid.getDatabase().rawQuery(query, null); } I

问题 I am using Loader for RecyclerView.Adapter to list items. I want to list specific items from database table. So i did: public Loader<Cursor> onCreateLoader(int id, Bundle args) { String selectionArgs1[]={"1","13","14"}; String selection1 = DatabaseOpenHelper.COLUMN_ID + " in ("; for (int i = 0; i < selectionArgs1.length; i++) { selection1 += "?, "; } selection1 = selection1.substring(0, selection1.length() - 2) + ")"; String[] projection1 =... return new CursorLoader(getActivity()

问题 I have an application with many list activities (5-6 of them), and all of them have custom cursor adapters, from my own ContentProvider(2), sitting on an Sqlite database(2). Now the problem, I want to implement CursorLoader (or like) class to load the cursors on background thread, below API level < 11, preferably 6 to 9.. I also want to show a ProgressSpinner, while the list is loading. What to do, best, AsynTask? Thread? or write my own CursorLoader for <11, please help. 回答1: You can use the

问题 How do I define a GROUP BY query for my CursorLoader? The two constructors for a CursorLoader I see take either a single Context or a Context , Uri , projection , selection , selectionArgs and sortOrder . But no groupBy . (I'm using the support package for a Android 2.3 device) 回答1: Not really... You can define a specific URI to your specific GROUP BY clause. For example, if you have a table mPersonTable, possibly grouped by gender, you can define the following URIs: PERSON PERSON/# PERSON

问题 I have made a listview with image and text as elements. If the data is text it displays text and if it is image it displays image. When i click button from MainActivity to the listview, the listview is displayed as needed, i.e images for image and text for text data. The problem occurs when the listview activity is opened and any new data is inserted in db and the listview is refreshed. The data in the view is completely messed up. it shows image in the some of the text data. But when i go

问题 I have an application which is using Loader s to get at a database which is also being edited by an IntentService . I receive data from the Loader through a LoaderCallbacks implementation, which is working fine. I am also using ContentResolver#notifyChange(Uri, ContentObserver) to trigger reload. However, this only works when I call Cursor#setNotificationUri(Uri) beforehand. I can find no reference to the latter method in any documentation and it seems in fact this may be causing crashes: see

问题 I am trying to get my ListView to refresh by using a Content Provider. I have created my Provider and have tried to link it propelry to my SqlLite DB. Once I have my provider completed I will implement my cursorloader but 1st I need help with my provider. I have not found and detailed information for novice users on how to create a content provider. any assistance would be appreciated. My DB and Provider are posted below. My main issue is trying to create a URI that links to my DB. DB: public

问题 I want to add "prev/next" functionality to my master/detail view. The master loads a GridView (with thumbnails), which -- when clicked -- start a DetailActivity via an URI (essentially containing the corresponding image ID). What I want is for the detail activity/fragment to be able to jump to previous/next image, directly -- without having to go back and forth through the master view. Ideally, I want to capture swipe gestures. I've read that the best way to do this is to use a ViewPager,

问题 I'm trying to implement SearchView in a Fragment, with search results queried for directly from sqlite via CursorLoader and search results rendered in the same Fragment via custom CursorAdapter. Search suggestions are also queried for directly from sqlite and rendered via custom CursorAdapter (CountrySuggestionsAdaptor). So, I have one CursorLoader for getting suggestions(loader id =0) and the other CursorLoader for getting search results(loader id=1). There are 3 problems with loading

问题 I have a list view to display albums. In each album list item, I need to display some information from each photo in this album. Here is how my cursor loader looks like: @Override public Loader<Cursor> onCreateLoader(int id, Bundle args) { return new CursorLoader(this, AlbumsColumns.CONTENT_URI, null, null, null, null); } @Override public void bindView(View view, Context context, Cursor cursor) { long albumId = cursor.getLong(cursor.getColumnIndex(AlbumsColumns._ID)); Cursor photoCursor =