Android : How To Detect Backlight Is On ?
Jul 1, 2010
My application requires resource and drains a battery when it is working. So, I want to know the way that user is not available on the phone. Is there a way to use the built in power save mode on the blackberry to where if the screen dims to suspend the application works active and when the user wakes the device back up with a keypress or trackball movement to resume the application works active?
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Jul 31, 2010
I am trying to detect Screen backlight On / Off.
I've found android.intent.action.SCREEN_OFF related its event.
But I don't know how to use this.
Can you suggest me about how to detect screen backlight on / off ?
I missing some example or sample code.
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Mar 1, 2010
I'd like to know how to turn on/off the backlight of a phone in android and how to get the time after which the backlight is supposed to go off.
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Mar 2, 2010
Could someone show me in a snipet of code how to set the backlight always on in android ?
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Sep 21, 2010
In my android application i would like to keep the backlight on always,without the screen getting locked.
Is there any way that i can do this code...
Have also used user permission in manifest.
To be more clear i have placed this in my splash screen but the issue is like the splash screen gets started after a particular time the screen shows force close after a bright light.
Could you please let me know if there is any solution for this.
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Mar 2, 2010
In my android app , I have a menu for backlight options ,and I want that when the user selects one like " during this operation " to have the backlight on during that operation. Could I be be shown a way of accomplishing this . My problem is the that I don't know how to manipulate the backlight and how to properly arrange this in the code.
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Mar 14, 2009
Although I haven't received confirmation from anyone at Google, I can confidently state that when the power to the display goes off, one can no longer obtain data from the accelerometers. I can easily think of a number of examples of where one would like to continue collecting accelerometer data even when the display is of. Supposing that I wanted to "fix" this, can anyone suggest where should I start looking? Would this be in the SDK, the kernel, or in some proprietary firmware that I can't touch?
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Jan 13, 2014
I had a problem when no matter what I did the screen would dim, then I noticed it might of been the backlight. So the backlight would turn off or dim after 15 seconds instead of shortly before the screen would turn off.
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Sep 11, 2010
I recently got the HTC Incredible and for some reason I've come to notice that the Backlight on the softkeys always stays on and is always very bright. I was wondering whether this way the way the phone was suppose to work or its something that not functioning on my end. I was also wondering if it does stay on all the time is there an app or option on the phone that can change it so that it times out after a while or dims.
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Sep 29, 2010
I tried the app "LEDs Hack" to turn off the softkeys (home|Menu|Back|Search) backlights but when I use it, Rockplayer stalls after a couple of seconds. Those buttons are distracting when I'm trying to watch a movie in the dark.
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Dec 9, 2009
I think I found a bug in 2.0.1. If you power on your Droid in the dark, the keypad backlight does not work. You have to go to Setting -> Display and manually unclick the "Auto" and reclick it back.Anyway to get it to work is to power the droid is a lighted room and everything will work fine. I think somehow the light sensor got screw up when it is dark to start with.
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Aug 18, 2010
My backlight comes on when charging, even if I lock the phone (to a blank screen) and I receive a text or message - a dim backlight comes on.
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Nov 18, 2010
I've had my Fascinate for a few weeks and just tonight out of the blue, no matter what timeout interval I have my backlight to shut off at, it goes blank and a few seconds later turns itself back on. Then keeps cycling on and off indefinitely. This happens whether or not it's charging.I'm not rooted, and the only things I installed today were Pulse news reader and Nose Candy. I've since uninstalled both and the problem persists. Any help? Obviously this can't stay, or else my battery will die within a couple hours, even when not in use.
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Nov 7, 2009
So annoying that when you come to end the call the backlight has gone out so you cant end without going back into the phone to see the end call button..anyway around this? And are there any apps that lock the volume button?
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Mar 3, 2010
Is there a way to have the backlight always on when on AC power? I have a cradle and would like to have the backlight always on when in the cradle.
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Jan 6, 2010
Can someone help me out? It seems as if the buttons on my Droid light up randomly on the faceplate and physical keyboard.are they always supposed to stay lit while typing or playing around with the phone?the backlight comes on and off randomly.
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Jun 30, 2013
I have a Karbonn A21 ruining 4.0.4.I actually enabled nexus soft keys on my phone and wanted to turn off the LED button backlight for the 4 keys below the screen. I did try many apps , but none seem to work.
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Jun 10, 2010
It just might be a silly question , but I'm having a backlight issue on my moment touch , the backlight only dims while on a call but wont go off?
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Jun 11, 2010
I'm running into an issue, that I'm sure many of you have ran into at some point and found a way around. When I have my Phone Plugged into the Charger (For example when in my car) after a set amount of time (I think it's around 30 seconds) my screen will Dim to only about 25% brightness(But never shut off completely). As you can imagine, this is horribly inconvenient when I'm running Google maps or sprint navigation. How can I make it, so that when I'm charging the phone, the screen just always stays on and does not dim at all? And then when I'm on battery the screen resumes the normal behavior of shutting off after 30 seconds. I've tried setting the "Stay Awake" option under "Applications > Development" to on, I've also tried setting the "Automatic Brightness" option under "Sound & Display > Brightness" to off. Neither of these worked.
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Jul 26, 2010
Is there some sort of tweak to extend the amount of time the control keys at the bottom of my Captivate stay backlit? I hate guessing in low or no light conditions.
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Oct 20, 2010
One gripe I have that I have been unable to fix (I looked through the forums a bit) is about the 4 touch-sensitive home buttons at the bottom. The backlight fades out after only a few seconds. Is it possible to edit the amount of time the backlight stays on for?
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Feb 26, 2014
Last week I flash a coustom kernel on my device (Xperia Mini Pro), now I have the honamify Z1 works smoothly, but the backlight keyboard is off, I really need it, because I usually type in the night.
My kernel is: cm-11.0-20140121-NIGHTLY-LegacyXperia-mango my room is: Honamify v2
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Nov 22, 2009
Just a neat trick, but not sure how useful it really is.If you want to lock the screen without turning the phone backlight off, you can do so by placing a finger on any of the four "touch-sensitive" buttons and pressing the power key.The screen will stay on, but the device will lock.It's up to you to find a practical purpose for doing so.I just though I'd share the feature (bug?) with you all.
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Sep 13, 2010
I have been monitoring my battery consumption for a while now and noticed that on minimum brightness, with screen timeout set on 15 secs, always 50% to 80% of my battery is being used by the screen! I was wondering if anyone else is getting a similar battery consumption?
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Nov 14, 2010
Does anyone know how to disable the backlight from the haptic keys on the droid/milestone? They are extremely annoying while I'm watching or reading something.
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Jul 20, 2010
Anyone find a way to turn off or at least dim the LED backlight for the softkeys on a rooted phone? It's blinding at night especially when trying to use Google Sky Map.
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Nov 16, 2010
I have had my Captivate for a couple of weeks now and love it except for one major issue. I keep dropping calls -- The back light comes on randomly and then my chin hits the end call button or other keys and I lose the call. I have had no success figuring out how to disable the backscreen from coming on during a call or if there is another solution that would work. I do not want to return the phone. Can anyone think of a solution?
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Mar 23, 2010
Any way to adjust the time for the back light on the slide out? Sometimes it just seems to short.
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Mar 19, 2013
I have a Pantech Sky A770K and it don't have Notification LED, i want to ask that there is a way to make Keyboard LED strobe when i receive new SMS or missed phone call?
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Sep 1, 2013
i was trying to get cwn recovery onto my phone and as said i was unsure of what i was doing (i know im Stupid) i had already sucessfully rooted the phone and i opened mtkdroid tools and clicked backup and recovery the box on the right started to spit out text as my phone became detached from the data cable.
Now when i try to power up the phone the backlight lights up for 3-4 seconds then nothing if i hold
volume + and power with no data cable i get the same backlight for 3-4 seconds
volume + and power with data cable i get a dead droid with a red ! in a triangle in its belly ?
the phone displays a battry bar in blue if i do nothing
the pc seems to recognise phone as universal serial bus
mtkdroidtools does not regognise the phone at all
the phone did say android preloader driver not found but ive installed this and this has now disapeared?
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