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Questions tagged [android-handlerthread]

Handler is part of the Android system's framework for managing threads. A Handler object receives messages and runs code to handle the messages. Normally, you create a Handler for a new thread, but you can also create a Handler that's connected to an existing thread. When you connect a Handler to your UI thread, the code that handles messages runs on the UI thread. This way results of background work can be moved to UI elements such as bitmaps.

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Unable to open a realm at path: open() failed: Too many open files

I have an android application which I do many realm operations. I tried to use handler threads to faster the database operations however this time I get these errors. I have reviewed similar questions but could not find out the reason. 12-17…
Hilal
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Stop HandlerThread which has a blocking call in it

I am making network request over TCP/IP and listening to the response on a separate thread. Each time I make a network call, I want to stop previous thread which is listening to response and make a new one. Unfortunately, older HandlerThread is not…
Ananth
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What is the impact of setting different priority on handler thread?

I'm have a handler thread with thread priority set to background, myHandlerThread = new HandlerThread(HANDLER_THREAD_NAME, Process.THREAD_PRIORITY_BACKGROUND); On this myHandlerThread I'm doing some operation to alter system property by invoking…
gooogle
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How to use onLooperPrepared of HandlerThread in Android kotlin?

I am developing in Android, I want to use HandlerThread to start a countdownTimer like the following code. private var bgHandlerThread: HandlerThread? = HandlerThread("MyHandlerThread") private fun startTimer() { bgHandlerThread =…
Wun
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Android, IntentService vs Custom service with HandlerThread

I have read one post about Android services within threads but there is one thing that I did not understand. In the post the writer uses a custom service because it allows multitasking while IntentService does not.…
JMP
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How to call .start on HandlerThread from .map operator

I am learnign how to handle and to use functional programming in Android. So I developed the below code. I would like to handle the HandlerThread as observable, but when I try to call .start() from .map() operator I receive the following error: …
user10776303
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Non-static class cant have static variable

I have posted the HandlerThread class where I got an error on the following line: private final static String TAG_LOG = MainAct.TAG_LOG + "->" + RoomPersistentDBHandlerThread.class.getSimpleName(); The error was inner class cant have inner static…
user10776303
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how to quite a Looper of a worker thread

I wrote the below code to better understand the Handler and the Looper. I would liek to know how can I quit the Looper on occurence of a specific condition for example, when a counter reaches a specific limit. In the below code, I want to call…
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Handler in onresume causes sigbart error

I am using a handler onresume method which causes a sigbart error asking not to block ui threads. Here's the code I have: @Override public void onResume(){ super.onResume(); new Handler().postDelayed(() -> { try…
user2386226
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HandlerThread audio recorder doesn't start recording after which a message has been sent to its handler

I'm trying to write a sound recorder app. The whole app consists of two components: Main Activity which only contains a fragment called RecordFragment, and RecordThread class in charge of recording the audio. RecordThread is extended from…
Soroush
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How to Stop Handler thread?

I want to stop this thread on button click. TIME_OUT = 45000; new Handler().postDelayed(new Runnable() { @Override public void run() { Intent i = new Intent(MapsActivity.this,MapsActivity.class); …
Ankesh Roy
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download users profile pics from Facebook: AsyncTask or HandlerThread

I've a list of urls. Each url holds a differenct facebook user's profile pic. I would like to download these pics and display them on the UI thread (on the screen). I used new AsyncTask for each image and the images are displayed one by…
Maor Cohen
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unable to set drawable on ImageView in HandlerThread subclass

i am writing a flickr client as part of a project from a book that i am reading. in it i create a subclass of HandlerThread that downloads images from flickr and then sets them in an ImageView. i set a placeholder .png earlier in the program and…
Mox_z
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android Handler gives Null object reference error

My Process is Updated the ProgressBar in the UI thread by using Handler.but it gives an error like this. .Handler.sendMessage(android.os.Message)' on a null object reference Plese check my code public class MainActivity extends…
sreeku24
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Android DownloadFilesTask concept

While trying with client server (fetching mysql data) with help of a tutorial I get many errors. I just read some threads here and I understood that the biggest error I get Error in http connectionandroid.os.NetworkOnMainThreadException …
pia-sophie
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