How Do I Get NFC To Close An Open App? - NFC Hacking

I have a rooted Sprint GS3 and am using NFC Task Launcher. I tried to set my tags to a switch, first tap opens an app, second tap to close. The apps never close, what am I doing wrong? I have one set up to open Waze when I get in my truck and the second tap is supposed to close it, never closes, but the tag registers. Same with another one I have set to open my equalizer and then Slacker, they open but never close. Any help is appreciated.

Well I got an answer from the makers of NFCTL over at Tagstand, it looks like a week or so and the ability to close an app will be available.
Joshua replied to your question 'Switch Doesn't Turn Off Apps, GS 3 Rooted':
There's an issue with the current release (4.1.3) where root access is not being leveraged to kill tasks. As a result you're at the mercy of the task killing API which doesn't do much on ICS or JB. The next update will correctly request root permissions when killing an app (should be available sometime next week hopefully).
Click to expand...
Click to collapse
I can't post the link, so I quoted their response.

Super Dave426 said:
Well I got an answer from the makers of NFCTL over at Tagstand, it looks like a week or so and the ability to close an app will be available.
I can't post the link, so I quoted their response.
Click to expand...
Click to collapse
This is true. Finishing up a few things, then on to translations and then the update will go live.

Or you can use Tasker if you have it. Can trigger a Tasker Task (to open and/or kill app) via NFC Task Launcher.

Problem exist
You can't kill apps (like Waze & DailyRoads). Bug is still here
Yes, maybe using tasker but tasker is not free

Related

Close an Application?

Hi
This might be a stupid question, but anyways:
I bought me a HTC Desire yesterday and im very happy with it.
Now i installed the Advanced Task Killer as i heard its a good app.
Now, every time i open something, like the SNESoid Player, or even my SMS(Messages), and the close it by pressing the Home or back button, i see afterwards in the Task Killer that its still running!?
So, how do i "close" an application, or is this just normal? It's pretty weird to me.
Thanks
This is one of the most asked and answered questions. Search and you shall find.
You probably used a WM device before Android I can imagine. Android OS handles all that stuff automatically, you shouldn't worry about apps not closing because when an app isn't used it isn't using either memory or CPU. When a new application opens and needs memory, the one(s) still running will close and give space for the new one.
As "ArtieQ" said it's not recommended to use a task killer.
But if you really need to stop a program you can use your native task manager, from "settings">applications>manage applications - then when the list of applications loads, you can press menu button and choose "filter" and then "running". Now when you choose an application from the list, it will show you information for it and an option to "force stop" it, that is to close it.
Thanks alot!
Well, i used a crappy iPhone 3G before..no multitasking you know
I was looking for an answer to this question and find something here but I am still a little bit confused : many applications that I have tested dont close if I press the home or the back button and they don't have any "quit" or "exit" command or menu entry. I was facing some battery issues with all these apps in the background. It's true that uninstalling some of them and force closing others in the app manager solved the issue but it is really not confortable to go in the app manager every time after using the phone to close the apps and save battery. I am wondering if an auto-close application exist in the market...
Advanced task manager has an autokill function within It's settings. It also has a desktop widget that you can press to kill apps when you want. You will probably want to add some of your apps to the ignore list though so notifications etc still work ok
Sent from my HTC Desire using XDA App
hans moleman said:
Advanced task manager has an autokill function within It's settings. It also has a desktop widget that you can press to kill apps when you want. You will probably want to add some of your apps to the ignore list though so notifications etc still work ok
Sent from my HTC Desire using XDA App
Click to expand...
Click to collapse
I remember that installed somthing like advanced task manager and it ended up by eating my battery charge cause it was running all the time. I'll test this and report back.
Thanks for the tip
Instead of using a task manager/killer consider using 'autostarts' which is an app (paid) which allows you to stop apps starting automatically.
For example, maps gets started when you do almost anything and once started really eats your battery.
I've been using autostarts for a while now and would definitely recommended it for battery saving.
thanks for this tip iain2510

Issues with Skype 2.0.0.47

I've just upgraded to Skype 2.0.0.47 on my SGS2 and on my girlfriends ZTE Blade, but are having some issues.
1. Where on earth do you change the status of Skype? It should be, and probably is, dead-easy to switch.
2. Is there an easy way to exit the application, short of force-close?
3. Can you prevent Skype from auto-starting constantly, even after force-close? The Skype issue page for this version states:
Skype is auto-starting after sign-out / force close:
Skype is a "search provider" type of application. As a consequence of this, the default behavior of the Android platform is to try to restart the application if it crashes or the user does a force close. Skype does not auto-start itself after signing out of Skype.
Surely it can't be that stupid? When I close an app, I expect it to stay closed. This is especially relevant with Skype and it always starts with the status set to online, no matter what the last know status was (another bug).
Appreciate any insight on this, thanks!
1. Skype - profile - the icon next to search icon in the top right corner. There might be easier way, but I haven't found it (wasn't really looking)
2. Stop Skype from the market, but I'm having issues after last Skype update - see 3.
3. Don't know, but if I use the stock task manager and kill it it stops restarting - at least for a while.
Sent from my GT-I9100 using XDA Premium App
There are version within this forum that have the likes of non auto start and exit buttons built in.
pepa.sajdler said:
1. Skype - profile - the icon next to search icon in the top right corner. There might be easier way, but I haven't found it (wasn't really looking)
2. Stop Skype from the market, but I'm having issues after last Skype update - see 3.
3. Don't know, but if I use the stock task manager and kill it it stops restarting - at least for a while.
Click to expand...
Click to collapse
1. There it was, thanks!
2. Yeah, that that one and it doesn't work for me. Skype stays closed longer than if I just end the task via a task manager, but still re-launches. Such a pain, at the moment I am forced to sign in and out as and when I use it.
Nyssa1104 said:
There are version within this forum that have the likes of non auto start and exit buttons built in.
Click to expand...
Click to collapse
Now that sounds promising. A link will earn you the soul of my firstborn
Nyssa1104 said:
There are version within this forum that have the likes of non auto start and exit buttons built in.
Click to expand...
Click to collapse
May I get the links?
(i'm completely new here, and not an english native - hard 2 navigate 4 me )
http://www.villainrom.co.uk/forum/showthread.php/4849-Skype-with-Video-Support-for-Various-Devices...
I hope this one helps
http://forum.xda-developers.com/showthread.php?t=1148708
This build works well for me with the extra options. SGS2 stock
Ayers976 said:
http://forum.xda-developers.com/showthread.php?t=1148708
This build works well for me with the extra options. SGS2 stock
Click to expand...
Click to collapse
Sounds very promising, thanks! Will try that.
Having tried it, I can confirm it's a good build for the SGS2. Most importantly there's an exit button and it doesn't autostart when you quit it. Just those two futures alone make it essential.
Video works soso, not always and the quality isn't much to write home about but then I don't really use video that much.
On the problem side it always starts with the 'Online' status set, not remembering the previous status like it does on a computer or on iOS devices (though that's the same as the vanilla Skype app from the Market) and more annoyingly, and several times embarrassingly, it rings and vibrates on a call even if the phone is set to silent (don't know if that is also the case with the vanilla Skype app).

Swiping away in task list DOES kill the task

I have seen it posted by many users that swiping away apps in the mutitasking list does not kill the app. This is untrue according to Romain Guy. He states that it does indeed kill the app.
https://plus.google.com/105051985738280261832/posts/GfwRYCC42uX
Neal Sanche - On Ice Cream Sandwich does the swipe gesture in the recent tasks list do anything to the tasks? Does it kill them or just simply remove them from the list?
Jan 5, 2012
Romain Guy - +Neal Sanche It kills them
Jan 5, 2012 +5
Simple way to test this:
Reboot your phone, check your battery %, open Facebook and close it. Check your battery % after around an hour.
Now do the same, but this time swipe Facebook out of the task list, the drain will be much less.
Any time I get abnormally high battery drain, every single time i've forgotten to swipe away facebook.
I had always had my suspicions that people were wrong about it not kill apps because in the browser if you swipe it away then the browser starts over fresh when you open it.
My experience with the phone says otherwise. For example, do this:
- create a play/pause control widget with widgetsoid (free on the market)
- open Google Listen and start listening any podcast
- pause it, and then swipe Listen away from recent apps
- now go to your homescreen and push play on the widget......magic!
I think something still runs at the backstage even if you swipe away the app. Of course that might depend on the app, and who know if also on the Kerne/ROMl you are running.
I've noticed the GPS icon appearing for no reason after running Facebook.
Then when swiping away Facebook the GPS icon stops.
Sent from my Galaxy Nexus using XDA App
the swipe only kills tasks in the foreground, to test, run a music app like Google music, then remove it from the list, it'll continue to play. it's not really a good feature, useful for some apps but if Google wanted the ux to be more consistent and intuitive then this is a prime example of one they failed at
the right way to do this would be to treat it like a force kill, but with a confirmation for ones running a background process
It kills them... Swipe away the XDA app.. Swipe away the browser... It starts fresh..
as for the person that suggested the music not starting over.. You can pause a song, restart your phone and it will be paused at the same spot.. So that's why that doesn't restart when swiped away.
Sent from my GalaxyNexus using XDA App
wonshikee said:
the swipe only kills tasks in the foreground, to test, run a music app like Google music, then remove it from the list, it'll continue to play. it's not really a good feature, useful for some apps but if Google wanted the ux to be more consistent and intuitive then this is a prime example of one they failed at
the right way to do this would be to treat it like a force kill, but with a confirmation for ones running a background process
Click to expand...
Click to collapse
If you read in the link I posted, they go on to explain why things like music can continue to play. Honestly I don't really feel like pulling that information out for you, but the link is there so the information is there for you.
mysterioustko said:
If you read in the link I posted, they go on to explain why things like music can continue to play. Honestly I don't really feel like pulling that information out for you, but the link is there so the information is there for you.
Click to expand...
Click to collapse
you don't seem to get my point, it's not about what Google wants, it's about user expectation. it's clearly a task killer and it doesn't behave the way you expect a task killer yo behave. this is why people love apples crap - it works the way you expect it to. obviously Google wants the function to work differently, so they need to presnt it differently so people aren't confused
that was a big point from duartes, that people don't love android, and yet they still don't really get
it fully. hopefully jelly bean picks up where ics has failed so aaple can go back to the little **** hole it belong in
wonshikee said:
you don't seem to get my point, it's not about what Google wants, it's about user expectation. it's clearly a task killer and it doesn't behave the way you expect a task killer yo behave. this is why people love apples crap - it works the way you expect it to. obviously Google wants the function to work differently, so they need to presnt it differently so people aren't confused
that was a big point from duartes, that people don't love android, and yet they still don't really get
it fully. hopefully jelly bean picks up where ics has failed so aaple can go back to the little **** hole it belong in
Click to expand...
Click to collapse
So basically you still have not read anything on that link.....
I see a debate team in the making whahahaaha
But seriousley.... the artical is inspired on appel ios..... i think its a little different
Then ics...
But i see the general meaning about it,ics recent app key doesnt kil procceses of the android system thus doesnt show it,right? And not important for the user
But in all fairness.... my ics recent app key doesnt kill annything though
Verstuurd van mijn GT-P1000 met Tapatalk
demon2112 said:
I see a debate team in the making whahahaaha
But seriousley.... the artical is inspired on appel ios..... i think its a little different
Then ics...
But i see the general meaning about it,ics recent app key doesnt kil procceses of the android system thus doesnt show it,right? And not important for the user
But in all fairness.... my ics recent app key doesnt kill annything though
Verstuurd van mijn GT-P1000 met Tapatalk
Click to expand...
Click to collapse
lol nah there can't be a debate if a person chooses to ignore the facts. BTW, I didn't mean the article, I meant read the comments on that particular post. They break down how the app killing works from the recent apps list. It doesn't work exactly like killing a task would in the "manage apps" area. It depends on the app that you are killing.
mysterioustko said:
lol nah there can't be a debate if a person chooses to ignore the facts. BTW, I didn't mean the article, I meant read the comments on that particular post. They break down how the app killing works from the recent apps list. It doesn't work exactly like killing a task would in the "manage apps" area. It depends on the app that you are killing.
Click to expand...
Click to collapse
i stand corrected.... download the app......active app... its widget looks like a chip
instal it.... pop the widget on home and open browser,clise it with home key and open market and close it aswell with home key....the widget will show that there are 2 active apps....open recent app key and swype away....when widget refreshes it says 0 apps........voila..it truly is a killer that key.......
oke im confinsed....its realy a killer...now evereyone can check for them selves
Verstuurd van mijn Galaxy Nexus met Tapatalk
mysterioustko said:
lol nah there can't be a debate if a person chooses to ignore the facts. BTW, I didn't mean the article, I meant read the comments on that particular post. They break down how the app killing works from the recent apps list. It doesn't work exactly like killing a task would in the "manage apps" area. It depends on the app that you are killing.
Click to expand...
Click to collapse
difference is i understand the facts, you don't seem to understand at all my point. you talk just like a developer who doesn't understand why the user can't see your way to do something when the reality is, its the end user that's the most important. you even agree that it's not a real task killer but you can't see why that's a bad thing b because you think everyone who uses android really gives a ****. the only thing the end user will see is that it's "broken" for some apps. im fully aware of how the task killer works in android yet you keep thinking that's the topic. feel like im talking to a brick
im not sure why this concept of meeting expectation is so hard to grasp
as i said before, if Google wants it to work a certain way they need to present the function differently so the user doesn't expect differently, such as not showing apps that it won't close anyway, or allowing force close through a confirmation
It actually does kill the apps... sometimes. If anyone would have bothered to search around, this has already been discussed in detail. If an application is dormant, swiping it away from the recent apps screen will kill it. If an application is not dormant and actively using system resources, it will not kill the application.
2 posts up people!!!!
and get the proof for yourselves!
Verstuurd van mijn Galaxy Nexus met Tapatalk
Swiping away Google Talk doesn't kill it.
Swiping away Pandora doesn't kill it.
Swiping away Google Talk doesn't kill it.
Swiping away Groupme doesn't kill it.
Swiping away Terminal Emulator doesn't kill it.
Swiping away Maps doesn't kill it.
Yeah...I think I have convinced myself that its not a task killer. The same tasks killed by swiping away are the same ones that hitting the back button kills in any other Android OS. Business as usual, and depends on how the app is coded. I didn't use a third party anything to check. I looked under running in Manage Apps.
pks check with that app and report back plz
Verstuurd van mijn Galaxy Nexus met Tapatalk
demon2112 said:
pks check with that app and report back plz
Verstuurd van mijn Galaxy Nexus met Tapatalk
Click to expand...
Click to collapse
I am not gonna use a third party app for what I can see in Running. For all I know (and its likely) the third party app is incorrect.
adrynalyne said:
I am not gonna use a third party app for what I can see in Running. For all I know (and its likely) the third party app is incorrect.
Click to expand...
Click to collapse
+1. All of you are talking about using crappy third party apps to check if swiping away an app kills it and preaching the results as gospel, none of you even knew how to check if an app is legitimately terminated. Smh. Swiping away apps in recent doesn't terminate it. All apps are coded differently. Learn about the OS before making claims of how a part of it operates in opossition to what its creators have stated.
Sent from my Galaxy Nexus using XDA App

Notifications

Hey guys, haven't found a thread about this yet (sorry if there is one!)
Really not a noob, but...
Really mega noob question here regarding notifications for the HOX and android in general?
I've noticed if I end the task in task manager I no longer get the notifications, I.e facebook, whatsapp etc, is this normal? Or should the apps receive notifications anyway? I've tried many things and always seem to lead that they work when not ended in task manager, so there still running tiny proccesses, is this right?
Really confusing and when I get something on my mind, I don't rest till I find out haha
Sent from my HTC One X
If you've killed it in Task Manager the app is in effect closed so notifications won't work. Leave it running and just close it in 'Recent apps' and you're good to go (at least that's my take on it, could be wrong)
EddyOS said:
If you've killed it in Task Manager the app is in effect closed so notifications won't work. Leave it running and just close it in 'Recent apps' and you're good to go (at least that's my take on it, could be wrong)
Click to expand...
Click to collapse
Thank you, I thought this just was really, really curious!
Sent from my HTC One X
Only reason I said that was I 'killed' AudioGuru once and it didn't change profiles until I ran it again and then it carried on as normal
According to Android Cloud to Device Messaging (C2DM older method) ,and Google Cloud Messaging for Android (GCM new method) documentation, the application does not need to be running in order receive push notifications.
PhoenixFx said:
According to Android Cloud to Device Messaging (C2DM older method) ,and Google Cloud Messaging for Android (GCM new method) documentation, the application does not need to be running in order receive push notifications.
Click to expand...
Click to collapse
I can verify that.
Strange that it stopped my notifications if I used Task Manager as well in that case...having said that, the app was a process to control the phone, not a notification so (as I said) I could be wrong
Maybe I was just having problems earlier then. Not really sure. Thanks for all your comments!
Sent from my HTC One X
PhoenixFx said:
According to Android Cloud to Device Messaging (C2DM older method) ,and Google Cloud Messaging for Android (GCM new method) documentation, the application does not need to be running in order receive push notifications.
Click to expand...
Click to collapse
yeah but this is for applications that use push of course.
i guess the difference here is that some applications don't use push, so when terminated, aren't open any longer to do the background server connect/check, whereas with push obviously the app doesn't check by itself, so no need to be running...
lawrence750 said:
yeah but this is for applications that use push of course.
i guess the difference here is that some applications don't use push, so when terminated, aren't open any longer to do the background server connect/check, whereas with push obviously the app doesn't check by itself, so no need to be running...
Click to expand...
Click to collapse
That's pretty much what I should've said in my first reply!
But I'm pretty sure whatsapp and facebook use either c2dm or gcma.
GCM actually commercial name of C2DM, and newer version.. its compatible with from froyo/gingerbread, though..
The hecks from facebook, whatapps, line doesn't used GCM, that why they need to runnnig own push service. yeah, multiple polling services may impact some battery usage..
I always reckon GCM is better than their own push service.. GCM is running as a service too, but it is highly optimized. That's why you are able to install/uninstall app from web browser. If all these apps use GCM, then we will have only one push service running behind and invoke the app if any imcomings..
Anyone who are interested may go youtube the GCM session on Google I/O.
HebeGuess said:
GCM actually commercial name of C2DM, and newer version.. its compatible with from froyo/gingerbread, though..
The hecks from facebook, whatapps, line doesn't used GCM, that why they need to runnnig own push service. yeah, multiple polling services may impact some battery usage..
I always reckon GCM is better than their own push service.. GCM is running as a service too, but it is highly optimized. That's why you are able to install/uninstall app from web browser. If all these apps use GCM, then we will have only one push service running behind and invoke the app if any imcomings..
Anyone who are interested may go youtube the GCM session on Google I/O.
Click to expand...
Click to collapse
+1 I wish everyone used this instead of the other sync method.
Facebook at least (don't know about whats app) is complete crap... its got better though, but wouldn't surprise me if it was just their own implementation of push that is full of bugs
Sent from my HTC One X using xda app-developers app
Thanks again for your comments people, so what you're saying is, I'm best.. atm to just not use task manager? Just end the tasks in recent apps?
Sorry, it's just difficult to see whether it's worth just leaving them running in the back ground on task manager. Are these the push notification programs were on about? There like kb, so I presume they just receive notifications?
Thanks for your replies
Sent from my HTC One X
MB*
Sent from my HTC One X
smidgeox said:
Thanks again for your comments people, so what you're saying is, I'm best.. atm to just not use task manager? Just end the tasks in recent apps?
Sorry, it's just difficult to see whether it's worth just leaving them running in the back ground on task manager. Are these the push notification programs were on about? There like kb, so I presume they just receive notifications?
Thanks for your replies
Sent from my HTC One X
Click to expand...
Click to collapse
Task Manager is more towards cached apps. Perhaps you should look under Settings >> Apps for the service mentioned. Kill them there, however some of them will be restart if you open the app later.
In faux kernel op hey stats usein task killer didn't gain any speed of the phone just creates force close and crashes
Sent from my HTC One X using xda premium
HebeGuess said:
The hecks from facebook, whatapps, line doesn't used GCM, that why they need to runnnig own push service.
Click to expand...
Click to collapse
Are you sure about that ? According to whatsapp changelog they have C2DM support, and the android manifest file of Facebook app has com.google.android.c2dm.permission.RECEIVE permission granted to it.
PhoenixFx said:
Are you sure about that ? According to whatsapp changelog they have C2DM support, and the android manifest file of Facebook app has com.google.android.c2dm.permission.RECEIVE permission granted to it.
Click to expand...
Click to collapse
Some people can't be told, but thanks for doing the research.
---------- Post added at 02:22 AM ---------- Previous post was at 02:16 AM ----------
smidgeox said:
Thanks again for your comments people, so what you're saying is, I'm best.. atm to just not use task manager? Just end the tasks in recent apps?
Click to expand...
Click to collapse
You dont need to kill tasks, unless they are really badly written, if that's the case, uninstall it.
When an app is backgrounded, it should save its state and idle. When Android runs out of memory, it can unload tasks. Why do you want to kill 'em all?
The notifications and end all function of the One X certainly works differently than it does on my GS3.
On the One X it will even stop my weather widgets from updating if I close all programs. My GS3 actually re-starts important apps.
Just a difference I've noticed between the two. I never use end all apps function on the One X after that -- just let it manage itself.

Close all?

What's a good app or way to close all apps at once?
Sent from my Nexus 4 using xda app-developers app
mario24601 said:
What's a good app or way to close all apps at once?
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Press the Home button.
irishtexmex said:
Press the Home button.
Click to expand...
Click to collapse
lol apps dont close when you press the home button smart one. and op if you click the multi-window button(the one on the right of home button) you can swipe them all away really fast but dont really know about all at once
FaDeGFX said:
lol apps dont close when you press the home button smart one. and op if you click the multi-window button(the one on the right of home button) you can swipe them all away really fast but dont really know about all at once
Click to expand...
Click to collapse
Yes was hoping for an all close at once type app. Had that on iPhone thought might have something similar.
Sent from my Nexus 4 using xda app-developers app
There are 3rd party app killers in the play store. Check there...
There was a stock task manager...but I guess Google removed it for JB
Sent from my Nexus 4 using xda app-developers app
App killer
Cyanogenmod 10.1 has a button on the multitasking menu to do that. But it's kinda pointless except to clear the list of recently used apps. Android, if my understanding is correct, automatically fills the memory with tasks so killing apps is worse than pointless since you're just causing the system to prioritize unused background processes over the ones that you use more often.
Sent from my Galaxy Nexus using xda premium
irishtexmex said:
Press the Home button.
Click to expand...
Click to collapse
You should listen to this guy. I know you're coming from a different OS, so you aren't aware of how Android deals with memory. The system is very good at multitasking. Apps that have been idling in the background will be pushed out and won't consume resources or ramp up your CPU. By killing those apps, you force the system to have to reload and process resources necessary to start the app. Android will keep enough of the resources to quickly fire up the app, but restrict activity so that your battery is pretty much unaffected.
An analogy if you need it: Android will bookmark and close whatever you were reading. That way, you can move the book around or leave it on the shelf and quickly pick it up and continue from the last page you were on. You are requesting that the system instead just closes the book, and buries it in a box with other books, and which is located in the attic. It takes more resources to find the book and locate the page again. Just let Android do its thing. Any popular dev will tell you the same thing.
TL;DNR - Don't use a task killer, you will get far better battery life and performance if you let the system deal with system resources.
FaDeGFX said:
lol apps dont close when you press the home button smart one. and op if you click the multi-window button(the one on the right of home button) you can swipe them all away really fast but dont really know about all at once
Click to expand...
Click to collapse
Don't listen to this guy. He used the phrase "smart one," which I haven't heard since I was in elementary school (and I thought it was un-clever and uselessly sarcastic then). He also thinks that swiping away apps from the recents menu kills them. This is not how Android works. AOKP devs will not implement a recents menu that actually does let you swipe to kill apps because it's a useless feature that does more harm than good (zero benefit, actually). Just trust that your system knows how to handle its resources.
TL;DNR - Swiping away apps from the recents menu doesn't kill them. Stop trying to kill apps; only do so if they're unresponsive.
If u really want it, aokp has this feature
Sent from my Nexus 4 using Tapatalk 2
reboot?
Hung0702 said:
You should listen to this guy. I know you're coming from a different OS, so you aren't aware of how Android deals with memory. The system is very good at multitasking. Apps that have been idling in the background will be pushed out and won't consume resources or ramp up your CPU. By killing those apps, you force the system to have to reload and process resources necessary to start the app. Android will keep enough of the resources to quickly fire up the app, but restrict activity so that your battery is pretty much unaffected.
An analogy if you need it: Android will bookmark and close whatever you were reading. That way, you can move the book around or leave it on the shelf and quickly pick it up and continue from the last page you were on. You are requesting that the system instead just closes the book, and buries it in a box with other books, and which is located in the attic. It takes more resources to find the book and locate the page again. Just let Android do its thing. Any popular dev will tell you the same thing.
Click to expand...
Click to collapse
Let's say I start loading a web page and quickly jump to another app before it's loaded, then when I return to Chrome the page is ready and waiting. Doesn't this imply that apps are not just simply bookmarked and closed, but may remain active in the background? I am asking, not saying btw.
1234568 said:
Let's say I start loading a web page and quickly jump to another app before it's loaded, then when I return to Chrome the page is ready and waiting. Doesn't this imply that apps are not just simply bookmarked and closed, but may remain active in the background? I am asking, not saying btw.
Click to expand...
Click to collapse
Foreground apps are told that they are no longer in view, but are allowed to keep running if they wish. The OS will stop them if the memory is needed - which with 2GB is not very often on the nexus 4!
So Hung0702 was wrong on the last page when he said:
Apps that have been idling in the background will be pushed out and won't consume resources or ramp up your CPU
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It seems as though background apps can use resources and may have a negative impact on battery. Now I have got to the bottom of this I also want a clear all button!
1234568 said:
So Hung0702 was wrong on the last page when he said:
It seems as though background apps can use resources and may have a negative impact on battery. Now I have got to the bottom of this I also want a clear all button!
Click to expand...
Click to collapse
Yes, they can keep using resources in the background. However, they will usually not keep the cpu awake unless they have an actual background service, so they will not stop the device from sleeping. As far as I know this is not enforced, but most apps will release the wakelock when told to pause by the OS (because the app is now hidden). This means they shouldn't have much impact on battery life.
You can see what is currently running by going to Settings -> Apps and select the Running tab. The recent apps list is not the same - most will have actually closed when you hid them.

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