android-cursorloader

问题 I need to make a ListAdapter that presents data from multiple ContentProviders. The ContentProviders themselves represent one table each from relational database. I want to use the CursorLoader system to retrieve aggregate data into ListView. Is this possible to do with 1 loader or do I need to use multiple loaders? I'd prefer to use one. I'm not sure how I can have 2 ContentProviders interact with each other beyond doing the join manually in code which doesn't seem like a great option either

问题 I need to make a ListAdapter that presents data from multiple ContentProviders. The ContentProviders themselves represent one table each from relational database. I want to use the CursorLoader system to retrieve aggregate data into ListView. Is this possible to do with 1 loader or do I need to use multiple loaders? I'd prefer to use one. I'm not sure how I can have 2 ContentProviders interact with each other beyond doing the join manually in code which doesn't seem like a great option either

问题 I'm building an UI where I need to show a list of phone contacts in a list view. I'm using ContactsContract.Data and the CursorLoader to load the data and then binding the cursor to a custom adapter (extended off of SimpleCursorAdapter ). The issue here is that I can't figure out how to filter out the SIM contacts; a test phone I have has identical contacts on the phone as well as the SIM, which causes the listview to have duplicate entries. If I remove the SIM, the duplicates go away. How

问题 I am doing like a quote application that pulls the quotes from the database and I need to display quotes in a ViewPager. I have created my CursorPagerAdapter which seems to work well. public class MyCursorPagerAdapter extends PagerAdapter { private Cursor cursor; private LayoutInflater inflater; public MyCursorPagerAdapter(Context context, Cursor cursor) { Log.d(MainActivity.TAG, "MyCursorPagerAdapter.onCreate()"); this.cursor = cursor; this.inflater = (LayoutInflater) context

问题 I was looking at the answer for making a Custom CursorLoader, and was wondering that if the data changes would there will be a notification of the data changing so that the list updates? 回答1: I'm using the compatibility library loader framework. When content changes I just call this and everything gets updated: getSupportLoaderManager().getLoader(YOUR_LOADER).onContentChanged(); 回答2: You could call notifyDataSetChanged on your adapter so that the ListView will display the updated cursor

问题 I have a ListFragment whose list should diplay the Albums of the device and the associated artist using MediaStore . Each row has thus two TextViews . I'm using LoaderManager and CursorLoader to fill the list up, with a custom CursorAdapter in order to bind the TextViews of the row to the data. ListFragment Code : public class AlbumsFragment extends ListFragment implements LoaderManager.LoaderCallbacks<Cursor> { AlbumsAdapter mAdapter; @Override public View onCreateView(LayoutInflater

问题 I have spent days to figure this out but no luck. Wish I could get answer from here. I tried to load data into spinner from my content provider using the cursorLoader method. The spinner seem had received the data but I found no data in the dropdown list, although several dropdown items (with no text) had been created. I believe problem is not from my provider because if I use the same cursor to retrieve the data and put it into array, then bind the array to the spinner, then it shows all

问题 I have two activities who read the same database table. In activity A I have an AsyncTaskLoader and LoaderCallbacks objects with the following onLoadFinished code (in Scala): def onLoadFinished(loader: CursorLoader, cursor: Cursor) = { android.util.Log.d(TAG, "got results") cursor.setNotificationUri(ct.getContentResolver, observePath) cursor registerContentObserver new ContentObserver(new Handler) { override def onChange(selfChange: Boolean) = { android.util.Log.d(TAG, "change registered") if

问题 EDIT I didn't add my XML I am writing a dialog for tagging selections. The first view is applying tags they have in their db. The next screen is a dialog for adding new tags to their db. I am supplying suggestions for them to use for their tags. I want to filter the list when they begin typing in their tag. I am using two custom CursorAdapters for each screen but they share the same ListView. I am also using a CursorLoader to run my queries in the background both are extended from the support

问题 I want to have two cursor loaders in my application fragment. Each one of them has different set of data and is used in different lists. I found somewhere that with cursor you can use getId() method and then using switch do something. But, there is always method: getLoaderManager().initLoader(0,null,this); after which can be something like this: adapter = new SimpleCursorAdapter(context, android.R.layout.simple_list_item_1, null, from, to, 0); This method is only for one cursor, but what if I