Android :: Why Isn't "standby" Instruction Able To Stop Thread?
Apr 1, 2009
Recently, I have tried to know what would happen to an alive thread, when the device goes to sleep. I program a simple activity that will create and start a thread printing "HERE AM I" repeatedly through Log.d. I expect the thread would be stopped after I "echo standby > /sys/android_power/request_state." The screen is off, but the thread still keeps alive and prints out "HERE AM I." I don't know why the thread can't be stopped. I test this through emulator (1.5cupcake) and G1(1.1?), but the results are the same. Could anyone give me some suggestions or hints about this question?
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Aug 24, 2010
I have an android application that I want to always be running in landscape mode.
I have the following code implemented to keep the app in landscape mode all the time:
inside my activity in the Application Manifest
android:screenOrientation="landscape"
This seems to launch and keep the application in landscape view for the whole duration of the application. Perfect!
However, if I have the app running on my HTC Aria (Android 2.1) and the phone locks, if I unlock the phone, I see the application for probably half a second and it's in portrait orientation and then quickly switches back to landscape mode. It is quite frustrating because all of my views are jumbled around and it looks unprofessional as you can imagine. This happens in both the emulator and on my real phone.
Does anyone know how to stop the application from temporarily rotating when the phone is unlocked?
I have tried overriding onConfigurationChanged() but with no success.
I have also tried putting setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); into the onResume() but the app still shows as the incorrect orientation for a split second when the phone is unlocked.
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Dec 9, 2009
My problem is: Activity A called Activity B, and in Activity B, it start a background thread to do some client-server work. But it maybe takes too much time. So i add a cancel button to call the stop() method to stop the thread, and call finish() to finish the Activity B and go back to Activity A. Although it is back to Activity A, the thread isn't stop immediately. Can i just call the finish() to go back to Activity A, and leave the thread to exit by itself? If it is not the right way, which is?
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Oct 18, 2010
10-18 10:26:39.382: ERROR/global(13919): Deprecated Thread methods are not supported.
10-18 10:26:39.382: ERROR/global(13919): java.lang.UnsupportedOperationException
10-18 10:26:39.382: ERROR/global(13919): at java.lang.VMThread.stop(VMThread.java:85)
10-18 10:26:39.382: ERROR/global(13919): at java.lang.Thread.stop(Thread.java:1379)
10-18 10:26:39.382: ERROR/global(13919): at java.lang.Thread.stop(Thread.java:1344)
10-18 10:26:39.382: ERROR/global(13919): at spexco.hus.camera.Camera.cancel(Camera.java:273)
10-18 10:26:39.382: ERROR/global(13919): at spexco.hus.cepvizyon.ViewCam.onStop(ViewCam.java:83)
10-18 10:26:39.382: ERROR/global(13919): at android.app.Instrumentation.callActivityOnStop(Instrumentation.java:1169)
10-18 10:26:39.382: ERROR/global(13919): at android.app.Activity.performStop(Activity.java:3797)
10-18 10:26:39.382: ERROR/global(13919): at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3416)
10-18 10:26:39.382: ERROR/global(13919): at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3487)
10-18 10:26:39.382: ERROR/global(13919): at android.app.ActivityThread.access$2800(ActivityThread.java:119)
10-18 10:26:39.382: ERROR/global(13919): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1896)
10-18 10:26:39.382: ERROR/global(13919): at android.os.Handler.dispatchMessage(Handler.java:99)
10-18 10:26:39.382: ERROR/global(13919): at android.os.Looper.loop(Looper.java:123)
10-18 10:26:39.382: ERROR/global(13919): at android.app.ActivityThread.main(ActivityThread.java:4363)
10-18 10:26:39.382: ERROR/global(13919): at java.lang.reflect.Method.invokeNative(Native Method)
10-18 10:26:39.382: ERROR/global(13919): at java.lang.reflect.Method.invoke(Method.java:521)
10-18 10:26:39.382: ERROR/global(13919): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:862)
10-18 10:26:39.382: ERROR/global(13919): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)
10-18 10:26:39.382: ERROR/global(13919): at dalvik.system.NativeStart.main(Native Method)
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Jun 17, 2010
I want to stop currently running thread but -Thread.stop() - Thread.destroy() are DEPRECATED so can any one tell me how to stop the Thread .
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Apr 29, 2010
I am basing my game off of the Lunar Lander demo.
The problem I am having is my game not restoring its last saved state when it comes back into focus.
When the game loses focus/quits it saves all the information to a Bundle correctly, then runs surfaceDestroyed() to shut down the thread.
When I restart the game, I thought onCreate(Bundle savedInstanceState) method was supposed to always start first, then restore the saved Bundle if it is not "Null". But because it sees that I have started/ created a thread last time, it jumps straight to surfaceCreated method.
The only thing I can think of is to find a way to get rid/destroy the thread so that it runs onCreate at the start. However the stop() and destroy() methods for threads have been depreciated. Is there anyway to do this? Or is there a better method of saving an instance of the game? code...
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Nov 19, 2010
Can any one tell me , how to stop thread safely ? Can any one help me how to stop or cancel this thread safely ? Code...
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Jul 5, 2010
I use the following code to receive the data using UDP. When I click the back button my screen visual is closed and it shows the home screen. But a thread is working in the background (it receives the data from the UDP server). When I close the application I also need to stop the thread. How to stop a thread? Code...
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Nov 24, 2010
Have to create thread and run it for 5 seconds, then I want to stop. How can I do that? I can't do anything with time/milliseconds.
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Oct 24, 2009
How can I stop a background thread on keyboard flip in android?
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Jul 4, 2010
I am new to android.At the time of closing application i need to stop the thread in android. Can anyone help me to solve this?
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Nov 11, 2010
My application is basically a image viewer. It is opened from both camera and as a separate application.
I open the image viewer to view and edit the picture. Each edit operation is implemented using thread. If my application closes due to pressing the home button, the next time I open it with camera. It throws anr.
This doesn't always happen. Only when large edit operations or edit operations on large image files are done.
I get out of memory error, sometimes timeout.
I guess it s because the thread doesn't complete the edit operation when home is clicked. and it s still running on the background. so when i open it s unable to process it.
m I right?
If so what is the way to stop a thread before the completion?
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Aug 17, 2010
To the mod who moved my thread please move it back. It is multi part and fits were I put it just fine.
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Jul 22, 2010
I'm not sure whether I'm badly misusing InstructionCount or there is a bug, but let's assume the first one for now. The simplified situation is like that: I have a function (say, foo()) for which I want to track the number of instructions executed and the function itself calls another function (say, bar()), for which I also want to keep track of the number of instructions executed, something like: Code...
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Apr 18, 2012
I noticed a file was downloaded to my Samsung Galaxy S2 whilst the phone wasn't in use with the screen off and locked. I've attached a screenshot of the download to show the file name.
The same file was downloaded again approximately ten minutes later, again without instruction.I then ran AVG which didn't identify anything (the Settings Security Issue is having USB Debugging switched on)..I recently restored my applications using Titanium Back Up after flashing a new ROM.
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Jun 28, 2010
Does anyone know where I can find the instruction manual for ClockworkMod Recovery? I want to know what each one of the options does, and when it should be used. If I use app2sd should I be wiping something extra when I install a new ROM? What does it do when it wipes the cache partition and dalvik?
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Feb 21, 2010
So my friend just broke my Droid Eris last night and now I'm getting the Droid! But i want to be fully prepared to root it as soon as I get it! Does anyone know of an up-to-date video of root? or something similar? Yes im a total noob, so simple is better.
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Jul 8, 2010
On Sun, Jul 4, 2010 at 3:49 AM, Official <ehiggins...@gmail.com> wrote: Is there a tutorial on how to do this?
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Sep 7, 2010
How can I implement a run() method of thread if I create a Thread Global?
I mean If I create a Thread Globally then can I implement its run() method {" public void run()"} anywhere in my Application?
In the run() method I have to write the code to perform some action.
IF I can do it then please can anyone show me briefly how to do it particularly.
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May 21, 2009
I am writing an application in which i need to handle messages between the main thread(the deafult UI related thread) and the user created Gamethread.
The requirement is like this.
An activity(say "Activity_X") is setting the view by "setContentView(some "View_Y")". In "Activity_X" i have implemeted "onCreateOptionsMenu()" and "onOptionsItemSelected()" fucntions for creating menus & a switch case for action to be taken on selecting those menus.Menu has items like "resume/pause/zoom/" .
All action to be take on selecting these menus are implemented in "View_Y" in a separate Gamethread by extending "Thread" class.
So whenever a menu is selected in "Activity_X" i need to send a message to "View_Y". And on receiving this ,a particular action/method should be called in View_Y(GameThread).
How can i achieve this using Handlers?Is there any other way of doing this? Please do share with me some code snippets for these.
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May 27, 2010
I have a separate thread running to get data from the internet. After that, I would like to update the ListView in the main thread by calling adapter.notifyDataSetChanged(). But it does not work. Any workaround for that?
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Jul 22, 2009
I want to do the drawing in another thread to speed up the game(it is way to slow right now). I was told to do this but don't quite understand why that would speed things up. Is it GameView that should implement Runnable? Should I make the thread sleep when not drawing? where should I start the thread? package com.android.WWS;
import android.app.Activity; import android.content.Context; import android.graphics.*; import android.os.Bundle; import android.view.SurfaceView; import android.view.KeyEvent; import android.view.View; import android.view.View.OnKeyListener; import java.lang.Runnable; import java.lang.Thread;...................
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Feb 20, 2009
I need to suspend/resume a thread from another thread in the same process. I tried to look into thread apis,but I couldn't figured out a way to achieve this.Can anyone pls point me some references to look or give a tip to do this.
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Dec 28, 2009
Does anyone know how to delete certain texts from a thread in an easy manner instead of having to delete a whole thread??
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Jul 16, 2010
The Android doc says "Like activities and the other components, services run in the main thread of the application process." Is the main thread here the same thing as UI thread?
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May 11, 2010
Just got myself a new HTC Incredible.It's my first Android phone, and hell my first smartphone at all, and I'm loving it.One aspect that's kind of bugging me, on previous phones I had, it was very easy to glance at the phone to see what time it is.With the Incredible, the screen shuts off completely when it goes into standby, and I have to press the top button to see the clock.It's not the worst thing in the world, but does anyone know of an app out there that can make standby mode display a clock instead?
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Aug 9, 2010
i'm programming an app that reads sensors values, and I need that it continue saving data while the phone goes standby (the screen go black after 1 minute).
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May 28, 2009
I am listening events from accelerometer sensor and everything is going right. The problem occurs when phone gets in standby mode and I am not being notified by sensors anymore. Does Anyone know if it's possible to get sensor notifications, by implementing a listener, even if phone is in standby?
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Jan 5, 2010
In 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.
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Sep 28, 2010
I have a service that spawns a thread which runs a task every 3 seconds.My service runs fine when my phone is on, but when my phone is on standby, the service is often not responding.Any clues as to how I can ensure my service is running while on standby?
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