android-loader Questions

2

Solved

I have a peculiar issue with Loaders. Currently I am unsure if this is a bug in my code or I misunderstand loaders. The app The issue arises with conversations (imagine something similar to Whats...
Hem asked 9/1, 2014 at 21:36

5

I am facing an issue with Loader. I have an Activity, which displays list of records retrieved from local DB. When the activity starts, records are automatically loaded via LoaderManager.initLoade...
Patriciapatrician asked 15/4, 2013 at 12:19

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I'm currently heavily modifying/rewriting an Android app and I have seen a very occasional crash along the following lines: a CursorAdapter method is called, it calls AbstractWindowedCursor#checkPo...

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I created a loader that descends from AsyncTaskLoader. It works 99% of the time, but there's an edge case where LoaderCallbacks.onLoadFinished() is not called after AsyncTaskLoader.loadInBackground...
Feld asked 14/7, 2015 at 17:37

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Is there some way to interrupt AsyncTaskLoader's loadInBackground() thread when I call cancelLoad()? I believe that AsyncTask.cancel() does this but the task variables are private and cannot be acc...

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In one of my recent SO questions, someone suggested that I use Loader for my solution. So here I am trying to understand how to implement a simple AsyncTaskLoader Here's what I've come up with: p...
Ihs asked 27/9, 2012 at 19:38

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What better way to show a progress indicator while my listview is not filled with data of database? I found some examples of how to do this, using assynctask, but in my case, I am using Loader /Cu...
Rathenau asked 18/4, 2013 at 16:34

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Loaders monitor data source and deliver new results After a configuration change : no need to re-query the data I read the android guide about Loaders. I read Alex Lockwood 4 parts tutorial . Tes...
Anglesite asked 9/8, 2013 at 5:28

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From the developer guide on Loaders, They automatically reconnect to the last loader's cursor when being recreated after a configuration change. Thus, they don't need to re-query their data. ...

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Short version: I have a fragment that maintains a ViewPager for displaying two other fragments, let's call them FragmentOne and FragmentTwo. When starting the app FragmentOne is visible and Fragme...
Herminahermine asked 18/8, 2013 at 17:45

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Currently, I have a loader @Override public Loader<List<HomeMenuRowInfo>> onCreateLoader(int arg0, Bundle bundle) { return new HomeMenuRowInfosLoader(this.getSherlockActivity()); } ...
Dissuasion asked 24/5, 2013 at 5:32

4

I kinda liked Volley framework, but I still have some doubts about it. For example, how does Volley line up with Loader pattern? Since it's requests are handled in an async manner, calling it on b...
Legislative asked 5/6, 2013 at 10:57

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I'm developing an app based on Google IO presentation architecture using the first approach. Basically I have a Service, ContentProvider backed by SQLite DB and I also use Loaders. I need a way to...
Physiological asked 5/12, 2014 at 8:49

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Let me start off by saying this is NOT a question about scrolling ListViews. I do not want to know how to tell when a user scrolls to the bottom of a list, so please do not give me answers for that...
Chilopod asked 3/6, 2013 at 14:35

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For what I understand, the Loader framework is geared towards accessing data stored locally in a ContentProvider / SQLite database. We have the CursorLoader class that handles this use case quite w...
Sobel asked 12/5, 2013 at 18:35

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I have an activity with swiping tabs using ActionBar tabs, based on the android developer example. Each tab displays a Fragment, and each Fragment (actually, a SherlockFragment) loads a different ...

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To me it's not clear how to get the right cursor if you have multiple Loaders. Lets say you define two different Loader with: getLoaderManager().initLoader(0,null,this); getLoaderManager().initLoa...
Protoxylem asked 31/10, 2011 at 17:39

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I'm trying to use an AsyncTaskLoader to load data in the background to populate a detail view in response to a list item being chosen. I've gotten it mostly working but I'm still having one issue. ...

1

I am using the sample code from the Google tutorial. The projection is where I specify the data I want to collect. How do I specify that I want the phone numbers? The sample from Google does not ge...
Disbranch asked 18/12, 2013 at 18:11

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Are there any advantages of Loaders over Async task? Also, how to make loaders compatible for phones with Android froyo. Edit: The primary problem here is that I'm not using the native DB(SqlLit...
Pastorship asked 31/1, 2012 at 10:39

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I am using an AsyncTaskLoader. I have an activity which has implemented LoaderCallbacks (Support library). I have breakpoint debugged and put in logs, the loader delivers the result, however the ...
Ahmed asked 20/9, 2012 at 7:9

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LoaderManager has this method restartLoader(): public abstract Loader<D> restartLoader (int id, Bundle args, LoaderCallbacks<D> callback) Starts a new or restarts an existing Loader in...
Elmiraelmo asked 21/1, 2014 at 8:55

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I am trying to create unit tests for a REST client that does some API calls. The client works fine in the live application, but I can't get it to run in the test case. Apparantly, LoaderTestCase.g...
Etti asked 6/7, 2012 at 11:16

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Given a fragment which loads (a lot of) data from the database using a loader. Problem : I have a pager adapter which destroys the fragment when the user moves away from the tab holding it and re...
Saretta asked 12/12, 2013 at 20:3

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I have one loader being used in an activity. I'm able to start the loader and it onLoadFinished is called. When I update data and call onContentChanged in the loader i see that loadInBackground and...
Mountbatten asked 16/12, 2013 at 19:17

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