android-loadermanager

I am using an Activity that extends SherlockFragmentActivity , that has 3 tabs. The 3 tabs are ListFragments that implement LoaderManager.LoaderCallbacks . The OnCreate method for the Activity loads the tabs like so bar.addTab(bar.newTab() .setTag("venues_list") .setText(getString(R.string.list_venues_header)) .setTabListener(new TabListener<VenueListFragment>( this, getString(R.string.list_invites_header), VenueListFragment.class, null))); // I do the EXACT same thing for the other two tabs, using their respective ListFragments if (savedInstanceState != null) { bar.setSelectedNavigationItem

I am using ActionbarSherlock with a SherlockListFragment that implements LoaderManager.LoaderCallbacks . In my ApplicationActivity onCreate method I am using setContentView(R.layout.application); to set the layout -- works great. I am initializing the actionbar like so ActionBar bar = getSupportActionBar(); bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); bar.setDisplayOptions(0, ActionBar.DISPLAY_SHOW_TITLE); bar.setDisplayHomeAsUpEnabled(false); bar.setDisplayShowTitleEnabled(true); // users event list bar.addTab(bar.newTab() .setTag("event_list") .setText(getString(R.string.list

I'm writing an app that allows people to set alarms for various tasks that they need to do. My current plan is to store all the relevant data into an SQLite database. To that end, I have created a class that extends SQLiteOpenHelper and filled it with methods to handle all the CRUD that I'd expect to have to take in. Knowing that it's generally a bad idea to do all the processing on one thread, I looked up ways to separate the work between threads and found CursorLoader and LoaderManager, which seemed ideal as they were available in the Android Compatibility Library. However, LoaderManager

I have a cursor returned on an onLoadFinished callback (from LoaderManager.LoaderCallbacks ), and I want to do some (possibly costly) post-processing on this cursor. So, I'm firing off an AsyncTask that uses this Cursor. However, I'm getting intermittent crashes with this exception: android.database.StaleDataException: Attempted to access a cursor after it has been closed. My suspicion is that this is happening because the cursor (being managed by the Loader in the UI Thread) is being closed before the background thread is finished with it, since this is a managed cursor. Here is some

I am trying to implement a CursorLoader and LoaderManager on a min API of 10. However, I keep getting an IllegalArgument Exception on Line 63 of AsyncTaskLoader.class (The source Code of the AsyncTaskLoader.class where the exception is happening is Below and at this link . /* Runs on the UI thread */ @Override protected void onPostExecute(D data) { if (DEBUG) Log.v(TAG, this + " onPostExecute"); try { AsyncTaskLoader.this.dispatchOnLoadComplete(this, data); } finally { done.countDown(); } } Below is the stack upon the error: AsyncTaskLoader$LoadTask.onPostExecute(Object) line: 63

I would like to follow this nice usability pattern, where app stores data offline for faster response and updates it when it gets new data online. And I use Loaders with LoaderManager . Now, what is the correct approach to implement the aforementioned approach with Loaders ? Currently I use two approaches, which have their downsides and, generally, are not very elegant. Storing the data in the application context instead of SQLite Two separate AsyncTaskLoaders - offlineLoader and onlineLoader . The first fetches the data from SQLite database and shows it immediately if it's there and the

Hi I want to get location from cell tower(Sim card) without internet. I had used below mentioned code it's give me only last location when network available. my requirement is to get location without WiFi or internet. can it's possible? package com.example.gpscelltower; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Timer; import java.util.TimerTask; import android.app.Activity; import android.content.Context; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import

I'm learning about custom providers and loaders. As a simple example I'm trying to implement a GridView that shows the pictures stored in the external SD card. Although I've read a lot (documentation, threads on SO, Google groups, forums...) I'm not able to get my code working. I know that several issues may be present on this example but I want to go step by step. The first error stopping the code is a NullPointerException , so my question is how to fix it. This is a minimal version of my Activity (it uses support library v4): public class MainActivity extends FragmentActivity implements