Android :: Turning Off Screen
May 19, 2010
I'm writing a program that processes SensorEvents.It needs to keep running and keep processing events even when the user isn't directly working with their phone (i.e. when it's just sitting in their pocket).To make that work,I need to prevent the phone from turning off.On the other hand,I don't want to waste power unnecessarily, so I don't want to prevent the screen from turning off.Looking at the documentation, it seems that a WakeLock of type PARTIAL_WAKE_LOCK should do exactly what I want. But it doesn't work: as soon as the screen turns off, my program stops running (or at least onSensorChanged() stops getting called).If I instead use a lock of type SCREEN_DIM_WAKE_LOCK, everything works as expected and my program keeps running.But then the screen stays on (although dimmed), which is far from ideal.
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Oct 4, 2013
A Tasker task that when I'm on the lockscreen, I can tap or double tap to turn the screen off. I've looked in the Tasker tasks and I'm unable to find anything for this. I already use the Nova gesture+ScreenOff app to turn the screen off when I'm unlocked and at the homescreen, which works perfectly. The only thing Nova can't do it turn the screen off from the lockscreen.
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Sep 11, 2010
I have a signal that puts my app to sleep for a given number of minutes (using AlarmManager) and then wakes it back up.Everything is working except the screen doesn't ever come on.I then release the wakelock when I'm sure that my app is up and running and connected again. However, the screen never comes on! The app only actually comes back to life when I hit the power button to wake up the screen manually.I'm developing on an HTC Hero.
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Nov 27, 2009
Is there any way where I can detect that the screen is about to turn off, so I can do some work *before* it happens?I need this to work around bug 3755: OpenGL apps sometimes crash when the screen gets turned off because they don't get surfaceDestroyed /surfaceCreated() events. Simply put, I need to shut down OpenGL before the phone has a chance to detach the GPU. The only events I seems to be getting when the screen turns off are onPause() and onWindowFocusChanged both of which turn up *after* the GPU detaches, by which time it's too late.
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Jan 31, 2010
As we know that Android phone gets locked after screen timeout. But I want to lock the phone on demand as well. i.e. without waiting for screen timeout to occur.. As in nexus android phone there is hard button on top for making screen turn off and lock the phone. i have to do same functionality but by using soft key i.e. in a programmatic way. What are the APIs or routines that can help me ? Can someone point me for getting this functionality?
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Nov 17, 2009
I see another thread on Locale, but it seems to be focused on it technical shortcomings. I thought a thread about how people are using this app would be helpful.
Now... I use Locale for the following:
- Turning the ringer down when I get to work (obviouse one)
- Turning GPS/Bluetooth/wifi on when I plug it in the phone (think car dock)
- Turn on Wifi when I get near my known hot spots.
- Turn off GPS/Bluetooth/wifi off and turn down brightness when my battery is low.
And the last one is a good one for me...
- I have a GV number. When I call my phone from that number, it turns the ringer volume all the way up and it turns on wifi and GPS. This is my "lost phone aid". It turns on the locating features so I can see where the phone is using iGoogle and Latitude, and I can hear the phone if it is "in the cushions" on vibrate.
Anyone else get creative with Locale?
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Oct 2, 2010
I am developing on 2.1 and location updates will not resume after removing them and adding them again.Is this an issue with the system?
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Jul 3, 2010
My question is: is it only the power button on top of the phone that activates the screen from sleep mode?Also, how do i get the weather widget location to update to my current location as i move around the county/country?
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Jun 5, 2010
I have an activity that shows up when the phone screen goes to sleep/turns off ie turns black.
For some reason, the phone turns on when the volume buttons or the camera buttons are pressed. By turns on, I mean the screen wakes up or comes back from the black screen state.
I've tried using dispatchKeyEvent(KeyEvent event) and the buttons are disabled on the activity, but they still wake up the phone.
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Oct 4, 2010
I made a make-shift "docking" station for myself because I am too cheap to buy the one from Verizon. How do you keep the screen from turning off?I know the droid 1 used magnets but the Fascinate seems to use something else and I can't figure it out.Does anyone know?
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Nov 23, 2010
Screen on my Desire occasionally lights up for 1-2 seconds for no reason then goes back to standby again. Happens once or twice every couple of days (could be more often but I don't stare at it the whole time). No notifications or calls coming in. I suspect it maybe one of the apps syncing or something, but as this happens so rarely it's hard to determine which.
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Jul 20, 2010
Anyway to make this happen? Now I'm not taking about unlocking the phone, just making the screen turn on to show the lock screen.
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Mar 30, 2010
My main gripe, is that the display turns off during a call. My instinct has already been to push the On/Off button to turn the display back on, but this also hangs up the call.I also find it VERY cumbersome that by default the numeric keypad is not there, a ALOT of calls are "push 1.. push 2 " type automated calls.
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Jan 26, 2014
Ive had a rooted Alcatel One Touch Fierce for about a month. Just recently a Tmobile update downloaded and i installed it. My phone rebooted and ever since then my screen turns off or goes black everytime i turn the screen on. For example when i press the lock button to wake my phone it will display for at least a second then go black but the touch is still functional so id have to navigate by guessing where everything is then pop the screen on for a second to see where i am. The only exception is when i bring up my keyboard or edit settings like when a slider pops up for brightness. I can see the android startup screen until its fully rebooted and i can see the recovery mode. Ive reformatted my data and cache. It is also not the timeout setting. I cant find anything about this issue anywhere.
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Jul 20, 2013
my gs4's lockscreen is "blinking"..
When i press the lock button on the phone which is roughly 2 months old, the lockscreen goes of for a second nd then automatically turns on stating tht swipe to unlock, life companion and etc.
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Sep 13, 2010
This problem only started after I bought JuiceDefender and I think I have all the settings set up properly so I'm not sure why this is happening. In the Android settings I have it set for a 30 second timeout, but for some reason my screen will fade brightness, but never go off completely.
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Mar 28, 2010
From a black screen, sitting on my desk, or bed...the screen would magically turn on. And not always to the lock screen. Sometimes would just turn on and be unlocked (I don't have it password locked, so it would open to the desk top without having to swipe) And if left alone, it will go to dark after 1 minute. It has cycled through this on/off 3 or 4 times, all without me touching the phone at all.If I power it down, it appears to solve this until.I don't know what, but eventually it will go through this routine again.
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Jan 25, 2010
When I'm making a call and pull it away from my ear to look up something on the phone itself, the screen stays on. Is there any way to turn off the screen before the timeout occurs (assuming this will happen at all). I don't want to hit the hangup/red button, obviously, since I'm sure that would end the call I'm on.
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Oct 20, 2009
I found a few threads about this in the European HTC Hero section.I also saw someone posted the question in Sprint's thread, however I can't find it through the search function.Does anyone know of an app or any way to turn the screen off while making a call.I know it automatically times out and turns the screen off, but I have hit the end call button too many times now.Hopefully there is a fix out or in the works for this.
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Sep 24, 2010
is any1 having the issue where the screen goes black in middle of use after a momentary pause but the soft keys are lit up and nothing can be done to wake up screen yet keys stay lit & only thing to solve issue is pulling battery as a means to soft reset phone ? i already hard reset device cuz of this & phone is 100% stock including zero market apps
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May 25, 2010
I use my hands free headphones that come with the desire to recieve/make calls whilst I am cycling.The only problem is that once the call has finished the screen comes back on, even when it is in my pocket.Meaning I end up pressing buttons, changing music tracks, opening apps and making calls.My iPhone used to just stay in "power save mode" with the screen off once a call had finished.
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Sep 18, 2009
it's easy enough to turn on the unlock pattern security feature and it was fun to give it a try but now I'm just wondering - is there any way to turn it off?? I've tried searching and even in the user guide it says nothing about being able to disable it. If anyone knows how to do this/whether it is possible please let me know - only because I'm finding it kind of annoying now!
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Jun 22, 2010
I thought this thing had an accelerometer in it? It only goes from portrait to landscape instead of 360 degrees depending on when you turn it like my Pre? When holding the phone in your right hand and it is connected to the charger and on the net the damn cord gets in the way. Am i missing something here? You have got to be kidding me if there is no way to change this?
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Apr 13, 2010
For the record, I am not rooted. I installed the OTA 2.1 update last week.Before the 2.1 update, I never saw this. But recently, my screen will turn on (it will display the 'lock' screen) all by itself. It's draining the hell out of my battery; I'm down to 80% after 2 hours, just due to the screen turning on while it's in my holster. Not cool at all.I've noticed this only happens at certain times at work. It hasn't happened to me at home yet, and I don't notice it while It's just sitting on my desk at work. I mainly notice it when I take it out before or after I take a break (leaving my desk to go out for a smoke, or whatever). So here's what I think it is.On my work laptop (Ubuntu 9.10), I'm running BlueProximity, which probes a paired Bluetooth device (my Droid, in this case) and locks my laptop if it's not within a certain range. It *seems* (not 100% sure) that when I leave and re-enter the maximum range of my laptop's BT receiver i.e., breaking and then re-establishing the connection -- that the Droid's screen turns on.Again, I'm pretty sure it's the 2.1 update that caused this to start happening. It only started happening within the last week. I suppose it could be an app, but that seems unlikely. Has anyone else seen a problem like this? Anyone have any ideas for resolving? Is there any info I can provide that would be helpful in pinning down the problem?
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Aug 3, 2010
I noticed now when I press the power button to wake the phone, the bottom capacitive buttons will light up first then the display will light up. there's a noticeable lag but very short. noticeable enough from 2.1.
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Nov 25, 2012
My China tablet will not turn on. The screen lights up but nothing else happens.There is no reset button, pressing volume and on button together does nothing.
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Dec 15, 2009
This is weird and took me a while to pinpoint exactly when this happens. When I am done using my phone I usually hit the home button to get to my home screen, regardless of what app or what screen I'm on. Then I press the power button at the top top turn off the screen. Almost everyday with what I thought was no clear pattern, my phone would reboot just after setting it down when I was done using it. I found that when pressing power too quickly after pressing home when the app hasn't fully gone away yet causes the phone to reboot. I have been able to consistently do this today from the gallery, not just at a specific picture but when viewing the list of my phone pictures. Over half a dozen times just now, every time, home then power and it reboots. I uninstalled OpenHome thinking it was related to the custom home app, but even with the default home it is still happening.Gallery is not the main problem, it has happened from other apps, but that one I have been able to most consistenly reproduce it because it takes longer for that to close before getting to the home screen (I only have 52 pictures, so I can't imagine that is the reason). I am about to go to a verizon store and see if I can reproduce it on the phones on display.
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Sep 4, 2010
Is there any1 else having this happen? I hit the power button to turn the screen off & it lights right back up as soon as I hit it; I hit it again to cut it off, & again it turns right back on; then when I do get it to shut off, about a minute or 2 lata it turns on again & will stay on until I fight to turn it off. I'm jus checking before I hard reset it & see if there's an app causing this.
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Dec 12, 2009
My Eris has been working fine with the screen timeout. It is set to go off at 1 minute. But since last night, it's only dimming the screen now. It will not turn off unless I press the end call button. It hasn't been doing that, so I'm not sure what's going on.
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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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