Android :: Touch Screen Slowdown
Mar 26, 2009
I am having a problem with the touch screen in that whenever the screen is touched, it causes significant slowdown because of the large number of callbacks that are being made. I have read in this group about throttling the UI thread, but this does not seem a good solution and i can't believe there isn't a better approach?
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Apr 18, 2010
I'd really like to know what the state of that fix is as 2.1 is rolled out onto first generation (MSM7200-based) devices. As it stands, I don't see much of a problem with touch eating up CPU on the Droid and N1 but those are much faster phones so I don't think it would be quite as pronounced on them. My current 1.6 devices (G1 and Tattoo) cut my framerates in half during any touch (with the sleep hack, even). I optimized my new games so that they would run well-enough (25-40fps) on that hardware but they have very touch-centric interfaces so won't work well with that bug. I talked to a few people who run 2.0/2.1 mods on their G1s and they said the problem isn't any better. They still see the big slowdown. I tested on my 1.6 emulator vs a 2.1 emulator and there is a huge improvement. The 1.6 emulator slows down just like my G1 does and the 2.1 emulator shows only a tiny bit of slowdown, which is what I was hoping for. That's encouraging, but I have yet to see a real 2.1 MSM7200 update in the field so I don't know what to think yet.
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Nov 18, 2010
It doesn't happen all the time, but it happens 7-10 times a day.Basically I can be using the keyboard or even in an App (like say angry birds) and the screen becomes unresponsive.The speed and responsiveness is comparable to trying to do anything on a 486 PC with a virus scan running.I type a letter and five seconds later it shows up.Interestingly, if I hit the sleep button, and then wake the phone back up it's completely fixed.I'm not saying I'm unique in this, I'm just saying I haven't figured out the correct search terms.I have a HTC Incredible, with the updated 2.2, vanilla.I highly doubt it is an App but here is my list just in case.
advocatus's Apps on the phone
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Jul 17, 2010
Just a quick question about the Captivate. I just got myself an HTC Aria and I love how easy it is to use the touch screen on it. Its extremely responsive. Now my sister has the SamSung Instinct on Sprint and the touch screen is horrible compared to HTCs touch on the Aria. Im thinking about taking the HTC back to AT&T and getting the Samsung Captivate. I am just worried about the touch screen on it and if it will be like the Instincts? If the touch is as good as HTCs Ill get it. If its not, then Ill stick with the Aria because despite its size, its an extremely fun and responsive phone. Any thoughts?
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Oct 21, 2010
Is there such a thing for the HTC desire? also, is there a app that lets you see how many multi touch points the htc desire has? i saw some youtube vids where that have this app and they put as many fingers as they can on the screen and scribble around.
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Oct 27, 2010
I have a simple, classic, statement that every 200 milliseconds plays a sound (a metronome). I wrote it using Handlers, and then in another way, using Threads. The problem is the same in both ways: when I press hardware home button, or also simply when I press a button to open a ListView, the metronome terribly slowdown for a while. This problem (not so strong, but however present) presents also doing nothing and leaving the application in foreground. Any ideas?
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Apr 15, 2014
My main device is an HTC One M8, but I also have a Nexus 7 2013, Nexus 7 2012, Galaxy Nexus, and a Moto X running on the same Wi-Fi network. They are all experiencing some slow activity on Wi-Fi. I also have 2 desktop PCs and a Laptop running on the same network and they are running fine, no noticeable lag.
On all of my Android devices, browsing the web via Chrome is almost as snappy (but still not the speeds I get on data) as it is on my computers. However when it comes to certain apps, there is a noticeable slowdown. Instagram has a lot of trouble loading images, Facebook, Twitter, Play Store downloads are stupid slow as well. And a bunch of push notifications from those apps, as well as GMail, won't come through or will come through hours after they should have.
But if I just switch Wi-Fi off on the devices that also have a data plan running (Moto X, One M8, GNex) everything comes through as fast as expected.
Could it be my router? I have a Linksys E800.
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Jul 24, 2009
I want to listen for the touch events from Lock Screen and Home Screen, is there any way i can tap those to my applications.
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Aug 12, 2010
I noticed lately that my stock text message application, is going very slow. On entering the application, screen goes black for 5-10 seconds, loads up each contact, picture, name, 20 seconds later, no lag. In this post, a Droid X user actually contacts Motorolla and Verizon about the issue:Text Lag is Back - Droid Forum - Verizon Droid & the Motorola Droid Forum.
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Aug 5, 2010
I recently updated through the OTA update to Froyo 2.2 on a stock EVO 4g (not rooted or messed with at all).When I finished the update,I sent a couple apps to my SD card (like Where was one, forgot the rest, maybe Flikie wallpapers).After that, the SD card was somehow permanently corrupted, I couldn't even format it on the phone or through a card reader on a PC. Anyway, then I started noticing extreme slowdowns on my phone's Sense interface (even today after putting in a new card).For example, when I try to type a text message,I put like a few letters from the person's name and it takes a good 30 seconds to show the results as opposed to instantly.Also, when a call comes in, the number shows up for a few seconds until it recognizes the contact, etc.Could it be because without a working SD card, things were put on the phone and now the phone is full (even though now I have a new card in there)? Or does anyone know why else this could be and maybe offer a solution?
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Nov 30, 2013
I have a Samsung Galaxy Express, which is basically a gimped SIII and ran into some weird slowdown issues. I first noticed with Fast & Furious 6. When I first installed it, it ran smooth. After a few weeks, the game became so choppy it was close to unplayable. I just thought it was a fluke, maybe one of the updates didn't like my phone.
So, after this and other random issues, I did a factory reset. After that I downloaded Injustice, very happy it was finally added for android. Same thing, at first it ran great but after a week or two it started to become choppy. I have cleared all my caches, cleared my ram right before playing by using an app All-in-One Toolbox and I have 2.3 Gigs free space out of 5 Gigs.
The phone runs on Jelly Bean(I think, whatever is 4.1.2) and the model number is SGH-I437. I know there are at least two different Samsung Galaxy Express model numbers so that is why I added that info.
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Sep 11, 2010
I bought a new droid for $20 haha lucky i think until i notice that the touch screen only works for the middle of the screen to the left so if yu cut the screen into thirds only the middle and left work assuming that yu cut it from top to bottom with the lights at the bottom for the home button etc. I opened it up cleaned all the flex cable with alcohol and waited for it to dry and it still does the same thing so my question is = do i need a new digitizer or is it a software problem or something that i dont even know?
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Oct 20, 2010
Touch screen is completely froze on my home screen.Battery pulls don't work, tried a android recovery.Can't unlock,can't do anything.Y'all have any suggestions?
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Jun 19, 2010
Anyone know of a widget to simply lock the screen or put into sleep mode by pressing something on the screen rather than pressing the power button on the top of the phone. Tried looking around and unless I'm missing something (I am particularly good at missing the obvious!) there doesn't seem to be anything that does just that. Anyone know/come across anything that will do this? Does anyone know if this might be included in 2.2?
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Apr 18, 2009
Are there any Im clients with touch screen? Aim in particular would be great. I am rootes at 1.42 rc33. Tried meebo and such but didn't have it.
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Jan 20, 2010
Alot of android phones use the capacitive touchscreen technology. I was wondering if there is away to access any sort of information related to this sensor.
In other words I want to get the voltage potential related to the distance that you push down on the screen.
I know this is probably really deep into the hardware technology and it's probably proprietary, but I want to know if someone has figured out how to access this data or if there is a way around it.
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Oct 21, 2010
RT Actually I wanna detect the shape of touch point, i.e. the shape of finger touch on the screen
Seems that the only information I can get in touch event is the size of the touch point(by event.getSize())
By the implementation of the screen, the shape(and pressure of each point in the shape) of the touching finger should be the first raw data that the hardware can detect
So, how could I get these raw data?
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Nov 18, 2009
In stacking tasks, at some point the touch screen dont work any more. It works again later without reason. Is this a known problem ?
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Sep 3, 2010
Is there a simple way to obtain the x,y coordinate whenever someone touches the screen while my app is running? Just looking to store them in some integers.
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Jul 13, 2010
Could any please tell me where i could purchase a new touch screen for my LG GW 620.
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Feb 25, 2010
It would end up looking something like the PSP. You would think that this would be an incredible feature for gamers and any platform that was serious about gaming. Then we wouldn't have to use touchscreen controls, barely passable d-pads, or optical trackballs?
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Aug 23, 2010
I want to get the display as dark as possible but I also want the display to remain touch sensitive.So I can't turn the display off, otherwise it wouldn't react to touch anymore. And I use WindowManager. LayoutParams. screenBrightness to get the screen as dark as possible. And I put a layer colored black over the entire display.That works, but at night one sees that the screen is still quite strongly illuminated.Does anybody have an idea of how to get the screen even darker?
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Feb 6, 2009
I am working on a game that displays its graphics through a modified SurfaceView.The game scrolls around a map based on the location of the main character.That all works fine.I am trying to add a feature to the game that allows you to touch the screen and drag the camera around to see other parts of the map.This is where I am running into trouble.The game's SurfaceView overrides 'public boolean onTouchEvent (MotionEvent event)'to call another method in the game's thread which handles the events.Sometimes, this works fine (although the frame rate drops significantly while the screen is touched).Other times, there will be a delay of several seconds before the game responds to a touch event, during which time the game continues, but the user loses all control.During these delays, a message sometimes appears stating that my activity is not responding, and giving the options to 'Force close' or 'Wait'.If the user selects 'Wait', the game almost always resumes right away, but these delays are obviously not acceptable.The delays occur only the first time the screen is touched after the game is started.Once the game has resumed after a delay, the touch events work just fine again.
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Aug 20, 2010
is there any application to get screen off by fast finger touch?
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Apr 13, 2009
Want to draw a line when I touch screen at two points. I can see OnTouch been invoked but after than everything breaks looks, the application crashes
I am using drawLine in Canvas.
CODE:......................
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Sep 8, 2010
I start monkey like this:
monkey -p <MY PACKAGE> --port 4321
(I have already done a tcp port forwarding).
I then use PuTTY to telnet to 127.0.0.1:4321
I can issue a command like tap 100 100 I get a response OK but I see nothing happening on the UI. I have placed a button at that location but I does not receive the touch event.
When I run monkey like this
monkey -p <MY PACKAGE> --pct-touch 100 -v 10
I see touch events being dispatched to the screen.
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Apr 19, 2009
I want to add some views in each row of list view. When I add text view and image view in getView() of ArrayAdapter,it works. But after I add other kind of views (like Check Box and Image Button...), I can't select the list row touching down screen directly, I only can select by key down, up and ok.
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Aug 22, 2010
I'm just wondering to know if a can with a background service have co-ordinates of a touch screen event in all activities.
Such like that code...
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Oct 28, 2010
I have a large image on the screen and I want to display a small image on that image where I touch the screen. but I do not know how to change the position of the image when I touch on the screen and the small image must display where ever I touch on screen.
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Oct 20, 2010
In Javascript/jQuery, how can I detect if the client device has a mouse?
I've got a site that slides up a little info panel when the user hovers their mouse over an item. I'm using jQuery.hoverIntent to detect the hover, but this obviously doesn't work on touchscreen devices like iPhone/iPad/Android. So on those devices I'd like to revert to tap to show the info panel.
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