Android :: Stop Threads With Long Operations?
Aug 28, 2009Android experts, I have a tricky question that I would like some advice on. code...
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HTC Incredible :: Long Email Threads / Stop This?
Aug 24, 2010I noticed that in a long threaded email with friends, when it got too long, it was stuck retrieving the email and I had to stop it and then try and download it all again (get remaining) and it never was able to retrieve it. When I finally got home to check the thread they were asking why I wasn't responding. Any tips on how to resolve long email threads not being retrievable?
View 1 Replies View RelatedAndroid :: Need To Stop All Threads When My Main Activity Closes
Nov 3, 2010Im wanting to stop all threads when my main activity closes as some are still running afterwards and are giving NullPointerException as they try to access Array Lists which no longer exist. however none of the obvious methods are working and they are also deprecated. is it possible as im currently using a try/catch statement as a workaround but would prefer a fix.
View 1 Replies View RelatedAndroid :: Where To Stop / Destroy Threads In Droid Service Class?
Mar 25, 2009I have created a threaded service the following way. code...
After I close the application the phone works really slow and I guess it is due to thread termination failure.
Does anyone know what is the best way to terminate all threads before terminating the application?
Android :: Prematurely Stop A Long-running SQLite Query
Sep 26, 2009How to programmatically stop a long-running query?
The long-running step is, for example, the first call to Cursor.moveToFirst(). This can sometimes take up to 30 seconds so I would like the user to be able to cancel.
However, how should this be done? I've tried closing the Cursor (in another thread) but all that happens is that the close() call takes as long as moveToFirst() and then terminates with the exception:
java.lang.IllegalStateException: attempt to acquire a reference on a close SQLiteClosable
Nexus :: Stop Long SMS Converting To Multimedia
Feb 23, 2010How can I stop an SMS over three messages long (So i assume this is 480 characters) converting to a MMS?
I'm probably being really stupid but I can't find the setting anywhere!
Android :: Application Threads Vs Service Threads
Apr 13, 2010What are the advantages/disadvantages in placing a lengthy network access code in a thread in an activity or a thread in a service? How would it affect the application? I am writing a streaming audio player and from what I've read so far putting the code in a service will still end up blocking the application so a new thread is needed, does anyone know if it makes more sense to put this piece of code in a service.
View 1 Replies View RelatedAndroid :: Do Network Operations In Appwidget?
Aug 22, 2010I'm developing a Android AppWidget for my application. For updating my appwidget I need to download data from network. But when I try to do that in onUpdate method, my appWidget is killed by Android system. I learnt that time consuming operations can't be done in receivers so I launched a service from onUpdate method and launched a thread from that. But still the problem persists.
Can anyone please let me know how to do network operations in Appwidget?
Android :: Handling Expensive Operations In UI Thread
Sep 16, 2009OK I'm reading this page:
http://developer.android.com/guide/appendix/faq/commontasks.html#thre...
The code is as in the example (see below). In my application, the worker thread has done loading of large bitmaps, and I need to notify the UI thread the filename of the bitmap that was loaded as they get loaded. How can I notify the UI thread of the filename of the bitmap just loaded? I can see anyway to for updateResultsInUi() to be able to take a parameter from the example below.
public class MyActivity extends Activity {
[ . . . ]
// Need handler for callbacks to the UI thread final Handler mHandler = new Handler();
// Create runnable for posting final Runnable mUpdateResults = new Runnable() { public void run() { updateResultsInUi();
} };
@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
[ . . . ]
} protected void startLongRunningOperation() {
// Fire off a thread to do some work that we shouldn't do directly in the UI thread
Thread t = new Thread() { public void run() {
mResults = doSomethingExpensive();
mHandler.post(mUpdateResults);
} };
t.start();
} private void updateResultsInUi() {
// Back in the UI thread -- update our UI elements based on the data in mResults
[ . . . ]
}
Android :: Composite Operations In Droid Canvas?
Mar 31, 2010I'm just starting with Android development and I'm coming from JavaScript/HTML world so I'm currently investigating the possibilities of the Android SDK.
The HTML 5 canvas supports composite operations (See here).
Is this possible in an Android Canvas? I scanned the API of the Canvas class but couldn't find anything useful. I need at least the composite operation "source-in" or (if this isn't possible) "source-atop".
Android :: JUnit Testing Database Operations?
Oct 18, 2010I'm developing an Android application with database storage.
I want to test some classes that I use to access database.
I've found ActivityInstrumentationTestCase2 to test Activities but I haven't found anything to test classes.
How can I do that? I haven't used jUnit before.
Android :: Low Level Operations With SD Card On Droid?
Nov 13, 2010Is it possible to have low level access in Android with Java/NDK to create for example card scanner like scandisk or card defragmenter? I move a lots of stuff around my card and it gets fragmented quickly. I have experience with FAT32 defragmenting on Windows, but I'dliek to do this on Android.
View 2 Replies View RelatedAndroid : Some Tutorials About Operations On Droid Emulator?
Mar 6, 2010Can any body give me some tutorials about operations on the android emulator ?
View 2 Replies View RelatedAndroid :: Avoiding Float Operations In Game Design
Jun 8, 2010I've read this in a few articles, that one should avoid floating point operations within the physics update of a game.
But how do you really achieve this? Surely all half decent games are going to involve this kind of maths?
Does it mean, convert all your variables to int, or use double instead, or simply just cut it out as much as possible?
General :: Galaxy S4 Android 4.4 / Program Crashes Operations
Nov 27, 2013I've downloaded the android 4.4, but when i'm going to settings, security, the program crash the operations.
gti9505G
I9505XXUEMJ7
COMPILATION: KRT16S.S005.13116
I want to mark the option install apps out of play store.
Android :: Need Droid Apps That Alter Normal Phone Operations
Feb 19, 2010So i was wondering if its possible to for an application that i would write to be constantly running in the background and alter regular phone operations. For example this could be something like as soon as you receive a text from anyone you forward it automatically to another number. Is something like this at all possible? Just to be clear I don't want to solve that particular problem through some other means, just want to know if apps can accomplish that. Also if that is possible is it possible for an app that i write to alter more immediate and instant things, like an incoming call.
View 1 Replies View RelatedAndroid :: File Operations Extremely Slow On Emulator - Totally Stuck
Jul 19, 2010I am finding that file operations are extremely slow on emulator. The same operation which takes less than a few seconds in a real device, takes minutes on an emulator. I am using a ubuntu linux machine with 2.4Ghz CPU, 2 GB Ram. I would really appreciate any help in resolving this. I am totally stuck due to this.
Android :: Design Application With Multiples Activities And Operations Running In Background?
Nov 22, 2010I am designing an app that will have some activities separated in tabs. Some of them will have to perform tasks in the background will the user is in another tab. What is the best strategy for designing an app like this? I was thinking about using a service but it can be killed by android dalvik, isnt it?
View 1 Replies View RelatedFake Permissions And Unauthorized Operations?
Apr 11, 2014I do a lot of Android app testing. I use my regular phone, where I have my contacts and my regular gmail account. I never used a credit card on this account. I mostly use APK files to install the apps. I have 2 questions:
1. can an app display some permissions when installing, but have others hidden permissions ?
Example: instal APK file > says permissions "Network access" and that's it.
Can this app also read my data or make phone calls, even though those permissions were not displayed ?
What is I use an app to display ALL permissions ? Can it really display all or is there an way to still have hidden permissions ? I use Android 2.3.7 root and 4.1 no root.
2. Can an app make unauthorized hidden operations, like place phone calls or send texts or steal my gmail password ?
Like I said, I never used a credit card, so at least that's not a problem. But I have my SIM card - can an app place a value added call or SMS (I don't know the exact English term - expensive call), without me knowing about it ?
Or compromise my Gmail account ? I have an alternate email for recovery.
General :: How To Get Tab Back To Normal Operations
Nov 1, 2013How to get my tab back to normal operations.After changing fonts it req for restarting and it's just hanging at booting process. Try to recover but it doesn't work. Then i try to use install 86vebc ROM by using CWM v6.0.2.8 and now it's keep on entering CWM again and again even after rebooting.I only able to give the specification as below because i couldn't find the exactly brand or model for my tab.
View 2 Replies View RelatedAndroid :: How To File Operations Works In Android
Mar 17, 2010I was wondering how the file operations works in Android. As in J2ME it has FileConnection class that takes care of most of the File operation tasks.. and it FileConnection doesn't support Android, what is the best way to accomplish the File Operation tasks? I would appreciate if someone could send me some code snippet:
1) Create a Directory( check for its existence first, if not then create it) 2) Create a File in the newly created Directory 3) Write data into the file 4) Read from the file 5) Delete the file.............
Android :: Hide Soft Keyboard On Activity Without Any Keyboard Operations
Oct 13, 2010I have a tabbed view with one Activity per tab, and when I switch from the first tab, which has a TextView, to the second tab, which only shows a clickable list, the soft keyboard is still there. I want it to go away.
I tried this:
CODE:.............
But this does not work, because there is no relevant view to provide, as there is no View on the screen that takes keyboard input.
Android :: Importing Contacts To The Device - Contacts Operations Are Very Slow
Mar 23, 2010I have some questions concerning importing contacts to the device, which is extremely slow.
First of all, if you delete all your contacts, google sync will restore it very quickly. However, when my app is adding contacts to the device, it's very slow (a few contacts per second). Even if I add almost empty contacts (with name only), it is a time-consuming process.
If I turn google sync off, importing 5000 contacts can take 1-2 hours (on HTC Magic). When google sync is on it can take up to 24hours. And this happens despite the fact, that application for the whole time is in the foreground, device is connected to charger and screen is on. I checked the logcat to make sure my app is adding the contacts the whole time, and it is.
I tried different methods and different devices. The results differ of course, yet manually adding contacts is always significantly slower that google sync. Is there any way that I can speed up the process? So that importing 5000 contacts will take less than an hour.
Android :: Start And Stop Music On Application Launch And Stop
Jan 5, 2010In my application i have several activities and i want to start background music whenever my *Application* is launched and stop music whenever *Application* is paused or stopped.
View 4 Replies View RelatedAndroid :: IntentService And Threads
Oct 22, 2010We are in the process of refitting some of our recievers and services with IntentServices (mostly to address rare ANR issues - and because IntentService is pretty cool...). In one case we are converting a traditional service to an IntentService. The original service fired off a few methods whose job was to download data from our servers. Each of these requests would spawn a thread of their own to do the work (apparently not fast enough to avoid the occasional ANR). So now we have a question concerning the life cycle of these processes.
For example, the following situation demonstrates what is happening:
- Start Intent Service - Trigger Download1 - Download 1 thread starts - End Intent Service
- Download 1 thread continues..... - Download 1 thread ends
Our question concerns our exposure to the OS shutting down the Download 1 thread because the Intent Service has terminated before it finishes up. Not sure if it is becomes more or less likely that the OS will view it as something that can be flushed.
If the Download 1 thread is more likely to be flushed by OS we will need to take a different approach.
Android :: Threads Or ASyncTask
Apr 6, 2010I 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?
View 4 Replies View RelatedAndroid :: Services X Threads
Feb 22, 2010I'm trying to understand the idea behind the Services. If it runs in the program's thread, why not create just a separate thread (or AsyncTask) to do the job? Can a service keep running in the background? For example, i want to create a task that will continuously be polling data from a server, even if the main application is not running. Can this be achieved with a Service?
View 8 Replies View RelatedAndroid :: Asynctask Threads Never End
Mar 13, 2010while 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 it´s 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 won´t last for the whole app running time).Is there anything I´m 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?
View 9 Replies View RelatedAndroid : Way To Save Threads?
Jun 5, 2010how do i save certain threads?
View 1 Replies View RelatedAndroid : Do Threads Add A Lot Of Overhead To An App
Aug 3, 2010As my app matures, I find myself finding more and more uses for threads. By now I must have about 25 threads, all doing important things and working together in symphony.
I notice however that my app is sitting around 15.5MB resident. Compared to the browser (+/-35MB) I feel pretty safe, but I do notice the resident size of my app ever increasing.
The question is, how much overhead is involved with adding a thread?
I'm also wondering if the synchronized keyword encounters more and more latency with each new thread that is present?