Android :: Application Priority - Graphics Stutter
Nov 18, 2009
I have an app which within the main Activity a SensorListener is setup. The listener detects changes from the accelerometer and sends updates to various child views, which update the display. When the app first start up, it's great - the graphics are smooth and the sensor notifications are immediately reflected in the views. Then after a few minutes it starts to stutter, making the display very jerky - and for the purpose of this app quite unusable. I've done some logging and the sensor updates are still being passed, but they start stacking up and all get sent in batches. It's like the system has put this app down the priority list after it's been running a while. I've added some garbage collecting but it only seemed to help a little. What could be happening here? How can I try and keep this app at the top of the priority list?
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Mar 31, 2009
I want to show off how good opengl es can display on my G1. Does anyone know a game with good 3D graphics that I should install for this?
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Jul 19, 2010
Does anyone's app screen stutter slightly when scrolling? If you quick flick to the bottom it seems somewhat ok but if you slow-scroll it seems to stutter. It just isn't as smooth as my iPhone. It's not terrible but comparatively annoying.
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Oct 30, 2012
I'm porting MIUI JB for Samsung Galaxy S III. Almost everything works smooth as it should and I'm left with only one little but verry annoying issue: when pulling down the notification status bar the animation lags, it's choppy, not Jelly Bean smooth. All other animations run smooth. This problem prevents many user's acces to a beautifuly crafted ROM in wich I invest most of my spare time and I wouldn't want to stop developing this just for an animation issue.
The MIUI I port is original miuiandroid's Galaxy Nexus version and the base I use is CM10 for SGS III of course, which has nice and fluid animation.
I also tryied other MIUI base, such as Nexus S, and also changed the CM10 build, but every combination has this issue. Related to this I read in different places words like SystemUI, surfaceflinger, motion blur, and vsync... but don't know much about them.
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Jan 9, 2010
I have been experiencing some frustrating audio stuttering or skipping while using A2DP Bluetooth stereo. After a lot of web searching and experimentation, I seem to have found a solution and thought I would pass it along just in case it may be of help to others.First, the problem. I am using a Sprint Samsung Moment Android v 1.5 phone and an Altec-Lansing/Plantronics Backbeat 903 bluetooth stereo headset. This combination has generally been working great so long as I am indoors or in my car. Oddly, though, as soon as I start moving around, especially outdoors -- and especially in a downtown area -- I would begin to get persistent drop outs, stuttering, skipping, etc.Research on a number of websites suggested two potential general sources for problem:
1. A2DP uses most or all of the bluetooth bandwidth and a fair amount of processor; this can create a problem of insufficient bandwidth and/or system resources. A number of sites and posts suggest various approaches based on this notion, most of which involve turning off or shutting down as many resources as possible including wifi, gps, unnecessary applications, or even restarting the phone to clear out such processes. I already do most of this just to try to keep my battery alive through the entire day. But there was one item I had not turned off and it seems to be making a significant difference: Wifi notification. (Menu --> Settings --> Wireless controls ==> Wi-Fi Settings --> Network Notification.)I have run across several theories as to why this would work. Some suggest that when you are walking outdoors (especially in an urban area), the wifi notification function encounters (moves in and out of) a lot more wifi networks and that the stuttering occurs when it is sampling or processing each of these new networks. In any event, turning this feature off seems to have made a significant difference. This seems to make a difference even if you already keep wifi turned off.
2. The other line of potential causes could be a problem with signal strength. One post suggested that bluetooth signals are stronger (or are reflected back) indoors or in a car -- but simply dissipate when you are outdoors. The suggested fix for this (as odd as it may seem) is to simply move your phone to the other side of your body. The purpose here is to avoid the bluetooth signal having to travel through your body. It turns out that Altec-Lansing actually makes this same recommendation on their support page. To my surprise, this also seems to work. The bluetooth receiver on the Backbeat headset is apparently on the left side. Being right handed, I have always preferred to carry my phone on the right. But moving the phone to my left side helped to dramatically reduce the stutters and drop outs I was experiencing with the headset.
These two steps have really helped to solve this problem for me. Using my bluetooth stereo headphones has become a real joy instead of an ongoing source of frustration. I hope this experience can be helpful to others.
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Sep 10, 2010
I listen to a lot of music and podcasts while walking and have noticed that there is a tremendous amount of stutter that happens. Does anyone else get this issue? I wonder if it is the headphone jack or the software that causes this.
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Mar 7, 2010
Ever since I bought my hero in December, I have had this problem where if I'm in a game, and it requires the screen to be touched, the game stutters. This happened when I had the stock 1.5. I needed to trade my hero for another when a lot of dust showed up under the screen, so Sprint gave me another one, only this one worked perfectly. No stuttering at all. So I decide to root it, and now it's running Aloysius, and the stuttering is back. Does anyone know what could be causing this? It happens in both the official and unofficial firmware. I can't seem to find an answer anywhere. Games it does this in includes: Nesoid and snesoid, and Raging Thunder to name a few. These games worked perfectly to my shock when I got the new phone, as I originally thought it was just a hero problem. I even emailed the developer of Nesoid but he didn't know the cause. Any suggestions?
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Sep 25, 2010
I just received a new Droid X yesterday from VZW and immediately upgraded it to official 2.2. The thing seems slower and more jerky than my stock incredible which is pretty damn smooth. If I scroll through the homescreens with a static (non live) wallpaper, it's almost like the walpaper stutters and jumps forward and back a fraction of an inch as it moves across the screen. Haven't really noticed it when using a live wallpaper. Anyone else see this? Really frustrating. Dissapointingly I might have to go back to the DINC if this continues. I don't notice this at all when using Launcher Pro.
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Sep 1, 2010
I was wondering if it is possible to set the priority of an IntentService like you can with a Thread. So far I have not found anything.
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Jun 5, 2009
I was searching for the priority implementation in Messaging. I didn't find any code to show the priority of say SMS( For ex: urgent SMS). Anyone knows whether this feature exists in Android. Or is there any plan to add show the message priority in the notification bar(For SMS /MMS/ Voicemail)
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Dec 16, 2009
I have two apps that use a service to upload and download files and data. I've noticed that when the service gets very busy, it can cause the UI to block, up to the point that Android shows a "force quit/ wait" popup. In order to avoid that, I run tasks in a service at a lower priority. This way, the service will never cause the UI to hickup. Also, the service stops if the app hasn't been used for a certain number of minutes. I don't want to keep resources if the user isn't using my app.I have found that some of my users run apps that run services permanently at normal priority. Such a service starts at phone switch on, and keeps running indefinitely, downloading vast amounts of data. My policy of being nice to other apps doesn't pay off: these agressive third party services push my service away so it never gets anything done. As one of my users told me, my app has hickups, until he kills the service of this app X, after which my app runs smoothly, snappy, and fast.
My question is, should I be nice to other apps and to the UI in my own app, or should I just run a service and agressively take all resources I need - or don't need? This is one issue where Android is different from iPhone. We can run services, but by doing so, we can cause damage to other peoples apps. Of course, my "question" doesn't require an answer. I'm just curious after what other people think, what your experience here is.
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May 14, 2010
Let me say this with an example. Lets say, my activity A is being executed, meanwhile another activity B gets launched. By default, acivity B will come on top of activity A. My requirement is that I want to keep A on top. Only activities such as phone, lock screen and home screen can come on top of me not other activities unless my activity closes.
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Aug 13, 2010
Is there a standard way in Android to create an unkillable service with very high priority, assuming you have complete access to the device (as in you're building your own device on something like a beagleboard, not just installing an app)? I'm playing around with sip phone stuff, and it seems like just doing it as an app isn't going to work if you want high voice quality. (Assuming you want to be able to let the user switch away from the actual sip app and use different apps; all the sip phones I've tried have failed to maintain decent audio if you're multitasking.) Or would you just run the phonecall software outside Android in a normal Linux process and communicate with Android apps over sockets?
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Oct 27, 2010
I am a newbie to Android so please excuse me if this is a silly question or one that has been answered many times before. When connecting to and using the Internet, I am trying to find out what determines the connection that the phone will use when more than one connection is available: Wifi, 3G etc. Is there a standard priority order for connection and use? can the user set the priority order? Usually I would expect the wifi connection to be preferred for reasons of speed and cost. I have looked at my phone user guide and the official Android user guide but cannot find any information about this.
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Oct 24, 2010
The symptom: I have a broadcast receiver that listen to sms, when a sms is received, i call an activity to display. It works all fine if the screen is on and not locked. But when screen is locked, and as soon as i received the sms, the activity popup for a second then disappeared and I use the code to unlock the screen.
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
I think it might be the competitions with phone default sms program (the sms default program shows a notification only). I am wondering is there a way to set priority to broadcast receivers or even the activity that receiver stared, to avoid the conflicts between multiple receivers. or set orders to execute one by one? I have tried to thread.sleep my receiver for a second, still not working.
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Aug 24, 2010
So from what I've known, if I do an AsyncTask inside an Activity, the task may be killed when user quits the Activity before it is finished. One solution I've seen is using IntentService, which the system will try hard not to kill. My problem is that IntentService only uses one background thread to run all the tasks one by one. I have several independent tasks that I wish to run concurrently, and that makes a difference in the UI (not serious, but could surprise user). How do I accomplish this? I imagine I could have several IntentService but this seems awkward and not scalable. How do I maintain sort of a threadpool that has a good priority, so that it won't get killed to easily by the system? If I start a (normal) Service, then launch some AsyncTasks within there, does that result in a higher priority?
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Sep 2, 2010
Does anyone know how to set it so that my Android phone only notifies me when I get a message in my "Priority Inbox" (the new feature Google just launched in case you don't know what it is)?With my email I receive a bunch of newsletters, so instead of being notified every time one of them arrives I'd like to be notified only when messages in my Priority Inbox arrive.Being able to be alerted to messages with certain labels only would also work.
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Jul 4, 2010
I have few question in application side. Questions are below 1. Can LMK (Low Memory Killer) kill service ? 2. Can I open multiple instance of same applications ? 3. Can I set the priority for the application? 4. LMK kills application(process) or one activity(suppose in application 4 activity). If it can kill activity then how activity stack handling this.
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Feb 9, 2010
I am programming a game with fast graphics. The MediaPlayer is stuttering sometimes. When I have the MediaPlayer in a service, it does not stutter, but some people here adviced me not to use services if they should stop automatically when the user ends my application. So how can I set the thread-priority of the MediaPlayer-Object? SoundPool uses the MediaPlayer and with SoundPool, you can set the thread-priority, but I cannot add my audio-file to SoundPool, because its size is about 2mb (too big for SoundPool). I can lower my main-thread-priority so that the MediaPlayer has a relatively higher priority, but isn't this a bad idea?
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May 5, 2009
I have developed a music player and the application defines a broadcast receiver that handles MediaButton intents:
<application...>
<receiver android:name="MediaButtonIntentReceiver"> <intent-filter android:priority="32000"> <action android:name="android.intent.action.MEDIA_BUTTON"/> </intent-filter> </receiver>
</application>
which works well. My question is if it was possible to change the priority of this receiver from within the settings activity of my application. That way people could choose if they wanted my player as default handler of the headset buttons or not.
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May 10, 2010
I have a multithreaded streaming app which has mainly the following 5 threads. 1 Main App(UI) Thread 1 controller thread (in native) 1 audio decoder thread (in native) 1 video decoder thread(in native) 1 thread to query the head position of audio (in Java) Apart from this I have video rendering with OpenGL. My problem is, if I query the thread priority using the Thread.getPriority method (my native threads make callbacks to Java and I am making the query at that point of time), I am getting the priority of each of them as 5. For my audio query thread (the last one in the list) I am explicitly setting the priority using Process.setThreadPriority(Process.THREAD_PRIORITY_URGENT_AUDIO); Also for my decoder threads, I am giving higher priority than my controller thread(using pthread APIs in native). But still finally all of them seem to have same priority. Also what should I be doing to increase the priority of my threads(both from Java and native)?
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May 20, 2009
I am trying to to use WiFi API to set priorities to created profiles. I am using the priority field of WifiConfiguration to set this information. I have found out that no matter what priority I set, Android always tries to re-connect to the latest access point that it was connected to. Here is what I do: 1) I create a profile A with a very low priority (0) 2) I create a profile B with high priority (100) 3) I connect to profile A 4) I turn Wi-Fi off 5) I turn Wi-Fi back on 6) In the scan Android sees both A & B 7) Android connects to A, even though its priority is much lower. Does anyone has a work around for this?
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Jun 29, 2010
I have got myself an HTC Desire as my Orange upgrade. The tariff is really good for me and I'm blown away by how good the phone is. I have been using an iPhone for work and asides from the games on the application store, the Desire is just so much better. So I'm working my way slowly through these threads. Anything I should do as a priority now that I have my new handset.
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Aug 1, 2010
Sitting at home . WiFi in full operation and showing as such on the Desire. If I use my Desire what will it prioritise: My home WiFi connection or the ISP's data connection? Both have strong signals everywhere in the house and both are equally fast. Important to know as don't want any isp billing surprises!
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Aug 4, 2010
I have 2 Access Points in my house broadcasting 2 different SSIDs, my Droid can connect to both successfully but it likes the one that is farthest away better. Most of the time I have to force connect the one I�m sitting next too. Is there a way to set a priority on which AP it connects too?
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Jun 20, 2010
Remember when choosing your minutes was the single most important thing on your cell plan? Then slowly, texting options became more important? Now, with smartphones everywhere, I see the Data Plan as the most important option. As for me, when I see the incredible, I see so much more than just a phone. For me, the phone part seems more like a tacked on feature in that the device is so much more capable than a mere phone. With its constant connection to the internet and its ability to run apps ranging from anything to everything you can imagine, the Incredible seems to fully capture the term 'Personal Computer'. Of course, having minutes to talk on your phone is important, but is that slowly becoming less and less a priority? With the availability of Skype and other VoIP services, could cell phone plan minutes be a thing of the past in the not to distant future?
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Mar 27, 2014
So there are a few apps which I want staying in memory. I.E. I don't want Android to kill it. Is there such an app that can do this and if not, is there a script? I believe Super Charger? If Super Charger, how do I use it?
To summarize, I want a few apps (the phone, the messaging, true caller, and ex dialer) to get highest priority/never die.
Is this possible?
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Feb 26, 2010
I have rectangle white box. on cliking the rectangle I will draw a toolbar beneath the box and also call relayout to accomodate the toolbar ( size+100) ( i used surfaceview and in secondary thread i draw the toolbar) on click again on rectangle box it will disappear the toolbar and also has to resize the layout to original size (ie size-100) this is where I get stuck. I can disappear the toolbar however I cant call relayout either from secondary thread (says cant call from secondary thread). So I created a while loop in onlayout( this is where i create a thread to draw the toolbar) if i call requestlayout after while loop ends it doesnt do anything it doesnt call onmeasure etc.
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Jan 14, 2010
I created a 2d game in java that runs as an applet, and i am now trying to translate this over to the android. As the android doesnt used paint() methods, i am thinking that i will have to import images of the game instead of drawing it, but i cannot find out how to do this. Anybody know how to add images to the folder and call them in the app? Also, how can i call a screen repaint() in the android?
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May 16, 2009
I want use the methods in android.graphics to draw one board (board chess,)
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