Android :: Programmatically Turning Off The Screen And Locking Phone
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 6, 2013
I have an ACER touchscreen that is running Android, I am using it for a display and want to disable WiFi so it can not be connected to the internet unless I want it to. There will be multiple people looking at things but I want to be the administrator.
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Jul 28, 2010
I recently made the switch from a BlackBerry Curve to the HTC Incredible. One of the "features" of my Curve that I'm having trouble duplicating on the Incredible is this: I was able to set a timeout to lock the phone and a separate timeout to blacken the screen. That is, if the screen went black after 30 seconds of inactivity, the screen wouldn't necessarily lock until 30 minutes of inactivity. I have increased the screen timeout on my Incredible, but the screen doesn't dim at all. I tried installing the No Lock application, but now I can't find a way to manually lock the phone if necessary.
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Jan 13, 2010
We are new to this droid market along with touch screen. She has a problem with hanging up or muting a call due to the touch screen. Is there an app or adjustment to lock the screen while on the phone? Sorry if this is a duplicate thread, I attempted to search. Not new to forums but new to this one.
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Feb 25, 2012
I've tried so many app's over the last couple of days that claim to stop the screen from locking but they have all just bypassed the lock screen... Well, they've tried to anyway. These kind of work arounds don't actually stop my phone from locking in the first place though.
My phone is a W008+ iPhone clone with Android 2.3.3. When it's charging, the screen will time out and switch off; But it doesn't lock. So I can hit any key to bring the screen back on and as it wasn't locked in the first place, I'm taken straight back to where I was.
When not charging, I get the same behaviour for ~2 or 3 seconds... Any longer and it locks forcing me to use the power key and swipe the lock screen along with any other security measures I may have in place.What I'd like is to be able to set the 'lock' timeout in the way that I can set the 'screen' timeout.How far will I have to go to get this functionality?
Is there a setting I've missed? I'm very new to Android so there's lots I don't know yet.
Are there any app's that can really do this? Maybe this would need a root app?
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Jan 8, 2014
When i turn on mobile network, my phone start locking screen many time, until I turn off the mobile connection.
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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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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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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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Nov 11, 2010
I have just received my new DESIRE HD fone, it runs android 2.2.I want to know if there is some app for locking screen, i dont want to use the hardware button on the top which activates the screen after the lock.I want something which prevents me from making calls accidently when the fone is in my pocket, also i want to save power by keeping the fone screen off when its not in use.I have seen the same thing in samsung galaxy, where u just swipe on the screen and screens come alive, is there something available for HTC too?
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Jul 18, 2010
Is there any way to change when these 3 things happen separately? Can I make it so my screen fades earlier but still takes just as long to go completely black? Is there a way to extend the time between total blackout and locking? Is there a way to turn off auto screen lock all together but keep the auto fade out and auto black out? I am always able to remember to manually lock the screen and the auto lock is annoying but I still like the power saving of the screen fade and black out.
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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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Feb 18, 2010
We are looking to add a new android locking screen (a password based one) with the same behaviour of the current unlock pattern. With some ugly hacks we have been able to create a custom locking screen but we haven't found a way to disable the home key.
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Feb 18, 2010
We are looking to add a new android locking screen (a password based one) with the same behaviour of the current unlock pattern. In fact we have been able to create a custom locking screen but we haven't found the way to disable the home key.
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Jan 7, 2010
Its not doing anything thing? Like all it says is HTC and its got like a spotlight on it, I am charging it now so maybe its because I needed to be charged? a little help!
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Aug 16, 2010
Has anyone noticed that if you uncheck the box to enable the lock screen that the Droid X's screen will turn on for incoming text messages? It's rather annoying as I would rather not use a lock screen but don't want the screen turning on for every new text either. Screen stays off fine if the lock screen is enabled. This is my first Android phone so not sure if this is how Android behaves or if it's a Droid X issue.
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Jul 22, 2010
So after rooting my phone. Couple days later i had it charging and decided to turn off my phone and before I knew it. It automatically turn itself back on? Y is that? I am using bb 0.4 p3 kernel 1.0 on blue energy theme.
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Jun 1, 2010
When I trun my phone on, the scene changes from the scene I had chosen (the waving grass) to "current (unsaved)".If I change it to the one I prefer (saved with my name) I am asked to "save or cancel" the incorrect one.I click cancel, and all is well.But why does it change and how do I keep the scene selected that I want?I just want it to stick on the scene that I have chosen.
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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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Aug 31, 2010
my Evo's screen will lock up...by that I mean the phone continues to function if I get a call or text, but I can't press any buttons or anything else on the screen (I'm still on v2.1). I can press the Power button and it brings up the power options dialog, but I'm unable to select any option or dismiss it. Usually if I wait a few minutes the screen will eventuall unfreeze and allow normal operation, but on a couple of occasions I had to pull the battery. Coming from the Palm Pre I'm used to this kind of crap, but I was hoping I left it behind me. Is there a way to reboot the phone just using the hard keys (i.e., some combination of Power + volume)? This would be an acceptable workaround...in fact, I would pay for an app that would turn the Power button into a "power off" button with a long press (hold the key down for 10 seconds and it turns off the phone). Otherwise, this is just annoying, but so far I'm living with it.
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Mar 1, 2010
I call my voicemail and before I am allowed to enter my password I have to unlock the screen. When I finish a call I have to unlock the screen before I hang up. When I leave a voicemail I have to unlock the screen before I hang up! This is driving me nuts!
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Sep 7, 2009
Is there a way to do this in certain situations? Eg, if I'm playing music in the car I'd like it to stay "alive". Also, this morning I put google maps on to track my route but my screen kept locking. I know keeping it on will kill the battery but I'll be charging it at work via my laptop most days anyway.
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Oct 30, 2010
on my old Samsung phone I had the backlight set to turn off after 30 seconds but this didn't lock the screen. With the Wildfire however with the backlight set to turn off after 30 seconds this also locks the screen. Is there a way to set it so the light goes off without locking the screen?
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Oct 24, 2013
I turned off smart alert, which solved my other problem like others have mentioned, but my phone still vibrates after locking my screen and it drives me crazy! how to turn this off?
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Dec 23, 2009
If I had a nickle each time I tried to open the notifications on the top of the screen, but ended up moving the clock, we'd all have a handful of nickles. Is there any way to "lock the items" on the screen so that they will not move unless you really want them to?
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Jan 28, 2010
today, as I was setting up my phone, the screen stopped locking when I push on the red button (on the right). this is usually how I lock my phone before putting it in my pocket but now it doesn't work. Is there a setting that can control this or is it a glitch?
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Dec 5, 2009
I own a hero on orange with the latest orange firmware. Over the past couple of days I've been having a few problems, mainly with my messengers from what I can see. Sometimes when using ebuddy or meebo, my phone's screen will go to standby (blank) as normal but will not wake up or do any functions. I have to take the battery out of the phone and reboot. I tried re-flashing the firmware just incase but it still does it. I'm trying out hi msn to see if that is any better. Just wondering if anyone else has had this problem and also does it sound like a firmware issue?
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Oct 24, 2010
Is there any way to lock the screen while on a call? My kids can't get through a conversation with grandma without hanging up on her.
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Sep 19, 2010
Is there a way i can have my lock screen pic be different then my homescreen? I cant figure it out
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Mar 3, 2014
I'm using nexus 7 2013 and have to deal with a problem like this: after locking screen and turn it on back, I can not access the internet. And after that, I have to refress the WiFi connection to access the internet.
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