Android :: Safely Save Everything Before A Kill The Activity Task
Feb 17, 2010
When the user press the home key, the onPause method is called. At this time, the application is supposed to save its state so it can be properly recovered later.
However, and if the state is taking too much time? For example, issuing a closeAllNetworkConnections that was waiting a feedback from the server, or just if the amount of information we're writting to disk is a lot of info... what would happen?
In my tests, i'm getting from 300-500 ms of time until the process is killed.
Is there a safer place to put a "save everything and quit" code so that it can safely save everything before a "kill the activity" task is issued?
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Dec 25, 2009
I am looking for an app that kills tasks that are running on a schedule. To be able to choose how often it kills the tasks, 5 or 15 or 30 minutes. So I can have the app running and know that every lets say 15 minutes it kills the tasks that I selected to always be killed I would prefer this method over screen blank apps that kill tasks.
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Jun 20, 2010
Is there a way to kill, end or completly stop an app without using a task killer, a task manager, whatever you call it? I mean within the Android os without installing an external app?
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Jun 15, 2010
I downloaded Advanced Task Manager and read this article and it didn't really explain how to use the auto-kill function. Of the five tabs, I can't figure out how to take advantage of it. I've been using ATK, but I'd rather stick to just one app. Which one has worked better for you? And how do I take advantage of ATM's auto-kill?
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Jul 1, 2010
Can you set your advanced task killer to automatically kill apps that you haven't used for a certain amount of time? for example 10 minutes?
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Nov 8, 2010
Can anyone recommend a good task manager to get from the market.
Been using the super security app which has slowed my phone down and the task manager on it isnt the best
Few people saying a 'task killer' is bad for androids. Again anyone got an opinion on this?
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Aug 7, 2010
I am a new android user. I am a new smart phone user. I used to just use a cell phone for calls and texts. Where do I start? What applications do I absolutely need? There are a few applications that are already on the phone that I'll never use (like twitter). I can't seem to get rid of them (do I need to?) What does the kill applications task manager do?
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Jan 3, 2013
So now I fully optimized my galaxy mini, and I have cyanogenmod 7 mebitek slim, I did everything to optimize it, installed V6, overclock 825 Mhz, killed every unnecessary task, even killed launcher by THIS way, have 230 MB free RAM of 279(true free about 205 MB) and now in RAM when I play a game there is just android system task and dialer task, and I was wondering, is there a way to kill dialer, because when I kill it with Task Killer ProMax Mini and select root kill, it kills dialer, but it auto-restart all the time...
So, is there a way to kill it without after killing auto-restart?
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Jul 29, 2010
Does anyone know where I can find a description of what the auto kill levels do on advanced task killer?Also, if you choose to auto kill when the screen is off, does anything reopen automatically with the screen still off?
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Jul 30, 2010
I have a task killer and I assume it's killing a process that syncs for new emails [I've set it to auto update every 30 min] and even when I open the app it does not refresh till I manually press refresh. Which process exactly should I put on the ignore list so it will not kill it.
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Dec 7, 2009
I installed it on my Droid and when I open the list and long press on an app it gives me the option to Auto-Kill. I assume this means I won't have to kill this app any longer so I select this option but I find that I keep having to kill the same apps over and over again. What's the point of Auto-Kill or what am I doing wrong? There are lots of programs (most I didn't even install) that run all the time and I'm having battery issues so I don't have battery to waste on programs I'm not using and will probably never use.
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Feb 16, 2010
Activity 1 starts a Service, using the standard Intent. Activity 1 starts Activity 2. Then, Activity 1 gets finished().
Now, there's only Activity 2.
How does Activity 2 kill the Service, since that Intent was generated in Activity 1? I don't want to pass the Intent everywhere...
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Dec 7, 2009
Any one knows how to Kill my all the activity at a time ?
Am inside so many sub menu if i click exit button there it should close all teh activity and show the OEM Screen.
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Nov 11, 2010
What happens here is I call the crop image activity and then the camera activity runs in background. When I finish this activity, the camera is still alive at the background. So how can I kill programmatic the camera activity running in background?
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Sep 27, 2010
How can I kill Android activity from asynchronous thread? In my android application, I start another activity using startActivity. Is there anyway for me to kill that activity I started after several minutes?Or is there any way beside using thread?
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Aug 4, 2010
I have activity A that starts activity B which starts activity C
A -> B -> C
When a user clicks on a button in activity C, i want to bring A to the top of the stack and take B & C completely out of the stack. Is there a way to do this ? ?
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Jun 2, 2010
My application calls Runtime.exec() to launch an executable in a separate process at start up time. I would like this child process to get killed when parent activity exits. Now I can use onDestroy() to handle regular cases, but not "Force quit", shutdowns from DDMS, or kill from the console since those don't run onDestroy(). The addShutdownHandler() does not seem to be invoked in these cases either. Is there any other hook or signal handler that informs my activity that it's about to get terminated? As an alternative is there a way to have the system automatically kill the child process when the parent die?
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Jun 30, 2010
Is it possible if my application is running and that time if any incoming call arrives then i want to kill or wait that call (phone activity). any one achieve this type of work in android. i have a no idea how to do this.
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Nov 24, 2009
I'm testing how my app behaves when killed by the OS due to low memory conditions. I always have three activities on the stack, like: A B C (then C launches maps or some other heavy process)
when my app is killed, and I return to it, C starts itself up again ok. When I hit the back button to go to B, I [sometimes] get an exception thrown which I can't trace. Output is below. I don't know where to go from here. I've only seen one other post mentioning this exception, but it was related to a reproducable error when rotating the device. This only happens sometimes.
CODE:....................
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Feb 2, 2009
I am trying to launch an activity from another activity .. Within the com.android.SingleLauncher..
I have activity launch code as ..
CODE:...........
I have set the android:multiprocess="true" in the AndroidManifest.xml of TargetSL I don't seem to see the multiple instances of TargetSL, which i am expecting ..
All i see is 2 process, where i was hoping to see an instance of TargetSL, for each launch that was invoked by the singleLauncher!
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Mar 17, 2010
Here's my use case: The app starts at a login screen. You enter your credentials and hit the "Login" button. Then a progress dialog appears and you wait for some stuff to download. Once the stuff has downloaded, you are taken to a new activity. Exactly which activity you are taken to depends on the server response.
Here's my problem: If you go HOME during this login/download process, at some point in the near future your download will complete and will invoke startActivity(). So then the new activity will be pushed to the foreground, rudely interrupting the user. I can't start the activity before I start the download, because, as I mentioned earlier, the activity I start depends on the result of the download.
I would obviously not like to interrupt the user like this. One way to solve this is to refrain from calling startActivity() until the user returns to the app. I can do this by keeping track of the LoginActivity's onStop() and onRestart(). But I'm wondering, is there any way to create the activity while it is in the background? That way the user returns to the app and he is ready to go. otherwise he would have to wait for the new activity to be created (which could take some time because the new activity also has to download and display some data). Update: Guess what? I LIED! I could have sworn that starting this activity was causing it to come to the foreground, but I went back to test it again and the problem has magically disappeared. I tested in both 1.6 and 2.0.1 and both OSes were smart enough not to bring a backgrounded task to the front.
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Mar 16, 2009
I'm trying to write a mediaplayer activity launched from browser. But I found if I launch mediaplayer activity from browser, it won't be shown in the task history window(long press home key). And if I launch mediaplayer activity launched from home, it can be shown in the task history window. Is there any way to make mediaplayer activity to be shown in the task history window when launching it from the browser activity?
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Mar 26, 2010
If my app is already running, then either Activity1 or Activity2 might be currently on top. How to construct an Intent so that it will simply show whichever Activity is already on top (in the task)? Just like if you touch an icon in the Recent list (long-press home). At the moment, it looks like (for explicit Intents) you need to be explicit about the Activity to launch. But I would rather be explicit about the app (package name). FWIW, I'm thinking of Intents triggered via Notifications.
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Sep 4, 2010
I officially want to know from real life experience, have any of you noticed an improvement in battery life by utilizing the program Advanced Task Killer (ATK). Yes or No.
I've heard arguments for and against using ATK which people have claimed could save battery life by killing off background aps and processes that hinder battery life by using the CPU in the background.
Some people say it works, others say "dude you are an idiot, you must not know anything about Android or linux, Aps don't run in the background with Android, its the beauty of Android" or something to that effect.
Maybe I'm an Idiot, but here is my experience. I have used my phone for periods of time, with and without ATK. I can deffinately say from my own real life experience, that running ATK improves my battery life. Maybe its a mental placebo effect I dont know. For those who say it doesn't work, I just have one common sense question, so here it goes. If Android is so smart, and it doesn't run background aps on it's own, which would use up energy, then why the heck does AmazonMP3 load up by it's self every 2 mins in the background. I never even use the stupid program, so common sense says if Android doesn't run background Aps like AmazonMP3, then how does it mysteriously show up on the list as being used in the background? Also I've read on xda people who root their phone, and manually remove programs like this, and they saw an improvement in battery life, isn't that more proof that indeed these programs use some energy in the background, thus ATK does help?
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Jun 11, 2010
Just got an HTC Desire through O2 in the UK as an upgrade to my old SE P1i. Happy with it so far, still going through it trying to turn off and disable loads of stuff though. Here's some initial questions:
1) I got the Force Close Button program from the marketplace. Should I be using that to close programs to save battery life?
Or should I just leave everything running in the background? Camera, web browser, email, calendar and whatever else I've ever used since I last cycled the power.
2) Is there a particular Task Manager program I should look at? I've got ES File Manager and notice they do a Task Manager as well but didn't know if there's any others that people recommend.
3) Is there a way to disable the SMS threaded/conversation view in the stock SMS program?
4) And to supress the deletion prompt in SMS?...........
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Jan 6, 2010
I have three activities. Activity A start activity B by the method startActivityForResult, and Activity B start activity C by the method startActivity. Then, after starting activity C, activity B kill himself by finish(). Now the task stack stored two activities: A and C. My question is: how can I finish activity A when I finish activity C. or how can I clear the whole stack of the task.
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Mar 14, 2010
I just started developing a simple Android application while I'm still learning its platform. I'm using Eclipse IDE with the ADT plugin 0.9.6 and I need to know if it's possible to view the activity stack that is associated with a Task. Is there any way through the DDMS tool or through any other technique?
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Nov 15, 2010
Question related to Android Activity Restoration:
In my application there is a background Service from where I am launching Activities, Activity A and B. I am launching Activity A on some external events using "FLAG_ACTIVITY_NEW_TASK" (I need to use this flag to launch Activity A from Service, if did not then my application segments, Don't know why this happens) and Activity B without this flag. Activity Launching Sequence is as follows:
Service --> Activity B --> Activity A (With FLAG_ACTIVITY_NEW_TASK)
When we are in Activity A and we Hit Home key It returns to "Android Home" Screen and then after Selecting Application Icon, android does not launch Activity A again It displays Activity B. When we hit back key on Activity B it gets deleted (as it should) and then after Selecting Application Icon again It displays Activity A.
Why this might be happening? Have I explained it properly?
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Dec 17, 2009
I have the startup auditor and Task Panel apps. I want to try and setup the phone to always have as much memory available as possible. Most of them are pretty obvious but there are a few I'm not sure of. Does anyone have a comprehensive list of services/processes/etc. that we can safely kill off and/or set for auto-kill/disable at startup? Edit: One I was curious about is Google Partner Setup. I have killed it off without any issues through Task Panel. But would having it on the auto-kill list be OK?
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Jan 13, 2010
My application has two activities, that I start in this order: HOME > A > B Now I press HOME and launch "A" again. I would like to see activity "B" on a top of "A", but instead I get "A" - so the activity stack is cleared. Manifest: <activity android:name=".activity.A" android:label="A" android:always Retain Task State = "true">What should I do?
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