When and why deliverResult is called in AsyncTaskLoader

When and why deliverResult is called in AsyncTaskLoader

How to Use Loaders in Android | Grokking Android

Sep 27, 2012 · onCreateLoader () The LoaderManager calls this method when you call initLoader () for the first time. As mentioned, the manager only calls this method if no loader for the given ID exists. The method gets an int value and a Bundle passed in. These are the same values you used for your initLoader () call.

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replacing the AsyncTask with an AsyncTaskLoader. – Gina Hsu

* Automatically called by LoaderManager via stopLoading. */ @Override protected void onStopLoading { // Attempt to cancel the current load task if possible. cancelLoad(); } /** * Handles a request to start the Loader. * Automatically called by LoaderManager via startLoading.

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Android check if this activity is not null/destroyed

Jun 12, 2015 · why are you using an asynctask instead of a asynctaskloader? The following will be called to restore your Activity's previous state. Note that the logic is contained in onCreate(), so it sounds like you will have initialize your Activity again.

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UltimateAndroidCameraGuide/PhotoGalleryAsyncLoader.java at

* called in a background thread and should generate a new set of * data to be published by the loader. */ @Override: public List< PhotoItem > loadInBackground {final Context context = getContext(); List< PhotoItem > photos = PhotoGalleryImageProvider. getAlbumThumbnails(context); return photos;} /** * Called when there is new data to deliver to

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AsyncTaskLoader: deliverResult does not trigger call back

deliverResult () and the callback onLoadFinished () is that it gives us a means of shortcutting the whole loading process from within the AsyncTaskLoader class. And this can be put to good use for caching the loading result within your AsyncTaskLoader and preventing the background loading from happening if there is cached data.

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[Solved] Android How to get the result of OnPostExecute

If you wish to use AsyncTaskLoader, here's a nice sample for you. In version 27.1.0, onStartLoading() is called every time the Activity is started. Since you call deliverResult() in onStartLoading(), you trigger onLoadFinished(). This is Working as Intended.

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👴🏾 🍽️ 😄 AsyncTaskLoader not starting - android 👨🏾‍🏫 🔤 🕷️

Dec 22, 2011 · I want to implement AsyncTaskLoader in my project using the Compatibility Package, so I followed the Loader guide in Android Docs. The problem is that Loader does nothing, it seems like loadInBackground() never called. Any idea on what's wrong in my code? ( ExpandableListFragment extends Fragment, but does not override any critical method

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A Dummy's guide to AsycTaskLoader · GitHub

//TODO: (1)Create a member variable inside AsyncTaskLoader to store the cached result in //TODO: (2)Modify onStartLoading to just call deliverResult if the cache isn't null //TODO: (3)Override deliverResult to store the data in our cache member variable: And we are done! Please if you find this article intriguing or helpful do share and like.

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Android Loaders : Reloaded

Apr 24, 2013 · Implementing a basic Loader We need to extend AsyncTaskLoader and implement its behavior. 36. Implementing a basic Loader The callbacks to implement Mandatory onStartLoading() onStopLoading() onReset() onForceLoad() from Loader OR loadInBackground() from AsyncTaskLoader Optional deliverResult() [override] 37.

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AsyncTaskとAsyncTaskLoaderのテスト - Qiita

Jun 13, 2018 · AsyncTaskとAsyncTaskLoaderのテスト. Android Kotlin. Androidでをうときに、まではAsyncTaskをってました。. でもにUIにさせたりコールバックをするときになんかだなとえながらやってたらAsyncTaskLoaderっていうのもあるっぽい

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[Solved] Android EditText typing is slow - Code Redirect

I was having a similar issue using EditText inside a ListView, that was fixed by changing the EditText width to 0dp using weighted widths to match/fill the parent.. I don't know for sure why this was occurring, however I believe it is because when the width of the EditText is set to wrap content it will adjust/redraw itself so that everything fits, and the ListView will also attempt to …

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AsyncTaskLoader | Android Developers

I would like to clarify something about AsyncTaskLoader (and probably other loaders as well) that seems to be asked a lot but never answered. I have noticed that if I cache data in a Loader and try to avoid a reload of the data, a call to deliverResult will not trigger a callback to onLoadFinished, if the data passed has not change since the last time the loader provided the data.

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Display data from JSON in recyclerview using AsyncTaskLoader

I am using the AsyncTaskLoader but nothing just shows on the screen. I have logged the data I need from JSON, to confirm I got the parsing right, and they show up. I have also logged the array of objects that are meant to be displayed, and they also show in the logcat, it is just the screen of my app that doesn't show any data.

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Android Tutorial => AsyncTaskLoader with cache

Remark: onContentChanged () must be called from the process's main thread. Javadocs says about takeContentChanged (): Take the current flag indicating whether the loader's content had changed while it was stopped. If it had, true is returned and the flag is cleared. public abstract class BaseLoader<T> extends AsyncTaskLoader<T> { // Cached

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Class androidx.loader.content.CursorLoader

Called on a worker thread to perform the actual load and to return the result of the load operation. Implementations should not deliver the result directly, but should return them from this method, which will eventually end up calling Loader.deliverResult(D) on the UI thread. If implementations need to process the results on the UI thread they may override Loader.deliverResult(D) and do …

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Building the Loader (How To) | Loading with Loaders

And it's called AsyncTaskLoader. 0:13. So, let's refactor our code to use an AsyncTaskLoader. 0:15. Instead of an AsyncTask. 0:18. Let's create a new class named MyAsyncTaskLoader. 0:21. And let's make it extend the support version of AsyncTaskLoader.

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[Solved] Android What does AsyncTaskLoader.deliverResult

May 13, 2017 · According to this picture from the internet ( available here ): onStartLoading will be called, then if there is data already loaded, deliverResult is called, then it deliver the result to onLoadFinished. However, if there is no data foceLoad will be called, then loadInBackground, then deliverResult, then onLoadFinished.

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AsyncTaskLoader | Android Developers

AlarmClock; BlockedNumberContract; BlockedNumberContract.BlockedNumbers; Browser; CalendarContract; CalendarContract.Attendees; CalendarContract.CalendarAlerts

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No shadow for framework version of AsyncTaskLoader · Issue

Feb 20, 2015 · erd mentioned this issue on Mar 20, 2015. Loader's onLoadFinished method not called #1613. Closed. erd added the 3.0 label on May 20, 2015. erd added this to the 3.0 milestone on May 20, 2015. erd changed the title Testing AsyncTaskLoaders doesn't work No shadow for framework version of AsyncTaskLoader on Jun 2, 2015.

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Xamarin MasterDetailPage memory leak with custom renderer

AlarmClock; BlockedNumberContract; BlockedNumberContract.BlockedNumbers; Browser; CalendarContract; CalendarContract.Attendees; CalendarContract.CalendarAlerts

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