Android :: AsyncTask Not Generic

Jul 18, 2010

When I try to compile to following code, I get two errors:

Description Resource Path Location Type
Syntax error on token "void", invalid Expression AsyncTask.java /AsyncTask Project/src/org/me/asynctask line 19 Java Problem

Description Resource Path Location Type
The type AsyncTask is not generic; it cannot be parameterized with arguments AsyncTask.java /AsyncTask Project/src/org/me/asynctask line 25 Java Problem

CODE:............

Obviously AsyncTask IS a generic (http://developer.android.com/reference/android/os/AsyncTask.html#execute so why do i get those errors?

Android :: AsyncTask not generic


Android :: Build Fingerprint - Generic - Google Sdk/generic - 1.5/CUPCAKE - 147336 - Eng - Test-keys

Aug 4, 2009

While running i am getting this error in my logcat and my app exiting automatically...

CODE:....................

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Android :: Instance Variable Of Activity Not Being Set OnPostExecute Of AsyncTask - Return Data From AsyncTask

Jul 28, 2010

I'm trying to figure out the correct way to create an AsyncTask to retrieve some data from the internet and then to take that data and bundle it up in an Intent and pass it to a new activity(A list display). So in the first activity I just have an EditText and Button. In the event of an OnClick the task should be called and when it is finished the data should be bundled inside an Intent and passed to the next Activity. The problem is when I take the results from onPostExecute and set them to an instance variable of the main activity, that instance variable is still null when the task is complete. Here is the barebones version of the code:

CODE:...........

When I debug the application I see onPostExecute does contain a valid PlacesList full of results, so why is the instance variable places set to null after the task is executed? I am going about "returning data" from an AsyncTask incorrectly?

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Is there a generic database application out there? I haven't found any in the market or mentioned in these forums.

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Does anyone know where I can find a generic image of Android 2.1? I have a Commtiva Z71 a.k.a Cincinnati Bell Blaze (which runs on Qualcomm MSM7227, 600 MHz) and no one has released instructions on how to root it or do really anything fun with it yet.

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Sep 25, 2013

can recommend a Root method that might work for the following phone configuration.My phone is custom built by a Sonim OEM, but factory modified to the Companies own brand.. its comparable to the Sonim A3, at least in outward functionality and durability, being waterproof, etc... but the internal hardware compilation is likely different, but I'm not sure how..

Here is my log from Android System Info.. it says at the bottom, user is root? but I dont have root access.. i ran Root Checker Basic, and it said I dont have a rooted phone.. I also did the terminal test & su was unrecognized and returned $ and not #

Here are the specs:

Android version : 4.2.2
Release Codename : REL
API LEVEL : 17
CPU ABI : armeabi-v7a
Manufacturer : alps
Bootloader : unknown
CPU ABI2 : armeabi
Hardware : mt6572
Radio : unknown
Board : mbk72_wet_jb3
Brand : alps
Device : mbk72_wet_jb3
Display : A8_V1.0
Fingerprint : alps/mbk72_wet_jb3/mbk72_wet_jb3:4.2.2/JDQ39/1378194655:user/test-keys
Host : android
ID : JDQ39
Model : A 8
Product : mbk72_wet_jb3
Tags : test-keys
Type : user
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I have a pandigital 7 inch tablet since they are out of business and i can't get any updates can i put a generic android operating system on it and how would i do it?

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The purpose of this tutorial is to change the generic windows icon of your G1 to an Android icon. What icon you ask? The generic removable disk icon given to your G1 when you plug it in to your PC. i thought it would be fun to create one that differentiates it from the rest. So here we go!
1. First of all we are going to download the pack ive created for you here.
2. Second we are going to rename the drive to Android G1 like i have on this image.
3. Third we are simply going to unpack the files you downloaded using an application like, WinRAR or 7-Zip. WinRAR offers you a 30day trial and 7-Zip is an open source freeware product. Choose one that fits you.
4. Now we are simply going to drag it into the root of the drive. Seeing since mine is the "K:/" drive, im going to place it in there. Once that is done, highlight both icons and choose properties and check off the "Hidden" attribute so that you don't accidentally delete them.
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Sep 13, 2009

There's seemingly no way to launch the calendar app in a generic way. I've written a widget which allows you to launch the calendar. I use the following Intent:

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Feb 10, 2010

I have a Samsung Moment and it is connected to my iMac for file sharing. By default when you connect, you get a generic drive icon with the title NO NAME.

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Just thought it would be cooler to use the Android robot icon instead whenever I connect my phone.

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Oct 12, 2010

I have three buttons defined in xml

CODE:..............

In Java one way to listen to them is:

CODE:.............

For second btn , same code has to be repeated with different id? How can I make it generic enough that , it can listen to all buttons (say in for loop) and while handling I should be able to differentiate different btns. (may be get elements id)

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Nov 15, 2010

Within a public class that doesn't extend any other class I'm doing some evaluation stuff and I would like to return a Dialog if something needs to be communicated to the user.

I'm using an AsyncTask to run a method of an instance of this class from the main ui:

CODE:.........

Now, the public Dialog start() method of OnlineActivities.java creates a dialog using the Context that was assigned via it's parameter.

When the Dialog is returned to onPostExecute I receive the following exception

CODE:......................

I suppose I cannot use the context like this. But what would be the alternative? How can I outsource some basic stuff I always need to do, even some general Dialogs? Do I need to use custom intents instead?

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May 19, 2010

An OnItemClickListener for a ListView has the following method:

CODE:.......

I'd like to have the adapter behind the ListView refresh, and I believe this is done through the use of:

CODE:.........

How do I use the parent parameter in the onItemClick method to do this? So far I've tried:

CODE:.................

This throws an error because the object returned is of class HeaderViewListAdapter, which for reasons unknown isn't a subclass of BaseAdapter.

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Oct 13, 2010

I want to display the same options menu on all of my application's activities. I created a generic Activity that implements the menu, and all my further activies extend it. The problem: when I need to extend other specific activities, like ListActivity and MapActivity, I can't figure out how to extend the generic activity and add the List or Map behaviour to the new class. To deal with the issue I had to create three different generic activities, each extending Activity, ListActivity and MapActivity.I've tried creating an abstract activity but it doesn't work, I would need to extend two classes at the same time. I could try interfaces but since I can't implement methods, I would have to paste the menu implementation all over the second-level classes, right?

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Jul 6, 2010

I'm trying to deserialize json data to an ArrayList of Restaurant object as follows (inpsired by what I found in https://sites.google.com/site/gson/gson-user-guide#TOC-Collections-Examples):

CODE:...............

But this gives the error shown at the end of the post.

It seems that there is some null pointer in listType... Here's a watch of listType:

CODE:...............

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CODE:....................

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Apr 13, 2012

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How can I root my 4.0.3 ICS generic tablet?

Specs

Beeldscherm:10 inch (24,7 cm) capacitive 10 point multi touch display
Resolutie :Scherm resolutie 1024 x 768 pixels
Aspect Ratio:4:3
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Mar 15, 2012

I've got new LG Optimus Sol E730.

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3. What is the best way to convert SMS view to generic style? Is it possible without any additional applications?

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Android :: Threads Or ASyncTask

Apr 6, 2010

I am working on a simple application (studying purposes) which list all the files from a selected folder. On top of that I would like to have a search feature where the user can search for files (the code for that is already in place). Now, I was thinking about having the search running in the background somehow, whilst the user can still navigate, create folders, copy, sort and do other stuffs normally. When the search finishes the user would get a notification and then could click on it and go to that activity (It ideally should be the same ListView I already use for browsing the files, I would just need to update the Adapter there with the latest processed data after clicking in the notification). What's the best answer for that? Threading or AsyncTask?

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Dec 27, 2009

Can anyone point me to a good example where a AsyncTask queries a local SQLite database and then updates the UI successfully. I have a database which I query using doInBackground... create a new custom SimpleCursorAdapter (overriding onViewBind), return the adapter (SimpleCursorAdapter), then in postExecute() create ListView adapter which is set to the the SimpleCursorAdapter, that was returned, then I set the listview adapter using SetAdapter(adapter);...

For some reason I throw an exception on fillWindow.java:200....

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Jul 15, 2009

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Aug 9, 2010

I know this is not how an async task should behave but my question is how to "block" the user while executing it.My need is the following: I have my own backup/restore process and I have an async task to run these two actions. The backup is fine, I can warn the user when the backup is done and that's just fine But my problem is about the restore process. When the user click on restore he shouldn't be able to make any change in the application (and anyway don't want to because he would lose all his changes).I understand that having the user blocked while restoring (or maybe with a progress bar) is not a best pratice but I do not see any other possibility in this context.

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Apr 9, 2010

I know how to use AsyncTask in a standard manner to manage operations that are in the background in relation to a UI thread.However,I want to run a task in the background which might run for a very long time under certain circumstances. In these cases, I would like to force the background task to fail if it runs for an excessive amount of time.I know that I can invoke the "get(long timeout, TimeUnit unit)" method of AsyncTask in my UI thread in order to terminate my background task if it runs too long. However, in that case, my UI will block while this "get()" command is waiting.There are probably other drawbacks to directly calling "get()" in this manner, not the least of which being an evil interaction with the "done()" method of AsyncTask's contained FutureTask object, which itself is calling "get()" at least this is what I see when I look at the source code for AsyncTask.

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Jul 5, 2010

I have an activity that needs to do some stuff in the background. When the background is done, I want it to load a new activity.I can successfully kick off the async task and using using ViewSwitcher I can show a nice progress dialog.However, when the user hit 'back' or 'close' from the new task, I want them to see the main screen of this task again. So, I use the showPrevious() after I start the new Activity, but I see the screen switch from the loading window back to the main window BEFORE the new Acitivity is launched.How do I get it to switch after the new activity, or when they come back from the new activity?I tried onRestart() and onResume() but both of them seem to give me a view of -1 that I couldn't do much with.

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Sep 20, 2010

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Jul 29, 2009

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Android :: Asynctask Threads Never End

Mar 13, 2010

while debugging and app that uses AsyncTask to record audio and update UI I noticed that everytime that an AsyncTask object ends running (finishes doInBackground and onPostExecute or on Cancelled its thread stays alive (running status).At least for me that should not be the behavior of the class since the doInBackground task may not stay running forever (as an example the android manual says that a status bar should be updated by an asynctask, and it wont last for the whole app running time).Is there anything Im missing, as a method to destroy it, or should I just ignore and keep creating threads as I need and the VM will handle them as it needs resources?

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