General :: Rikomagic MK802IV - HDMI Monitor Power State
Jan 15, 2014
I have a Rikomagic MK802IV which uses HDMI as its primary output.
I'm looking for a way to detect that the screen attached to the HDMI out has been turned off, or is in sleep mode, either through a command-line tool or a Java app. So far, I've figured out how to detect whether there is something connected by checking the contents of this node in sysfs: /sys/class/display/display0.HDMI/connect
However, this only reports whether something is connected, not whether it's on or off.
I also tried using the isScreenOn() method in Android's PowerManager API to check the power on state, but it always returns true, regardless of whether the screen is on or off.
Does getting the external HDMI's power state is possible on Android?
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Nov 21, 2013
I'm wondering about apps that are a little more than battery power monitors. I'd like something that will show me the apps that are running and taking up the most memory and causing the biggest power drains on my phone.
Something that would log this so I could look it over during the week and get an overall view and make decisions on what to keep and what to erase.
I'm thinking something that would show me what apps I used, how long they were running, how much memory they took up, how much battery power was used, etc.
Is there such an app out there? I'm wanting to look at the differences between the free apps and paid apps to see if it makes a difference also.
I'm running a Sprint GN2 currently 4.1.2. I haven't gotten the update yet.
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Jun 22, 2010
I was wondering if anyone has tried this combo. Can you plug your phone up to these three things and pop it to a larger screen and use a mouse and keyboard? It would be pretty cool if you could... I see a lot of fun possibilities with that type of setup.
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Sep 9, 2009
I want to know the state of SD card is dynamic mounted or not mounted? it's very kind of you if you can give me a demo(for example, use api register Receiver、Broadcast Receiver、on Receive and so on).
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May 31, 2014
I have made an Android based arcade machine that I want to sell to operators. They are accustomed to having an arcade machine boot up from one switch, and they also like to be able to leave that switch on so they can just turn on and off all machines with a surge protector switch or light switch. It doesn't seem possible to just have a simple binary ON/OFF switch for the K-R42, so I have to do it by having everything hooked up to a surge protector. Problem is that if I turn off the Android box by turning off the surge protector, I can't turn it back on that way. I'd like to find a way to have the Android device power on automatically from the off state when electricity is restored (sort of like the turn on after power failure option in Windows BIOS). I had read that this may be doable in the BOOTLOADER, is that true?
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Jul 26, 2010
Accommodates both the power jack AND the micro HDMI jack. Anyone seen anything like this for the EVO yet that has BOTH power and HDMI?
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Sep 7, 2013
I've noticed that none of the new phones coming out have HDMI out on them anymore. I've got a Razr Maxx that I'm looking at replacing and was looking at the new Droid Maxx but I'm concerned about the lack of HDMI out. I'm a boater and have a TV on my boat. I connect my Razr Maxx to my TV with a Micro HDMI to HDMI cable and watch Netflix when I'm on the. I'd hate to give that up but also realize that my Maxx won't last forever.
Any new phones that do have HDMI out?
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Jul 16, 2010
Is there an easy way to be notified when USB or AC power is connected to an Android phone?
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Aug 29, 2010
My application acquires and releases WakeLocks. What is the best way to test the app - i.e. is there a standard way to determine when the cpu is running (e.g. through a debug cable)?
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Jun 27, 2010
I'm trying to find out if anyone has tried to use Evo + Slingplayer + mini hdmi cable and hooking up to a tv? Any success?
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Oct 29, 2013
I have a rooted Galaxy S3 with Android 4.1.2, and for some strange reason they've changed the screenshot combination away from the Power+VolDown that other Androids use to Power+Home which can't realistically be pressed one-handed. How can I change it back to Power+VolDown?
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Jan 1, 2013
my phone is karbon A9+ and i wiped the cash,system and data and after that flashed a Custom ROM ! but now the phone just power on in download mode!! how to power on, for recovery or normal power on ! the phone just have the black screen with "Entry QPTS Downloading" Text..i will back to India 5 month later ! can it be fixed or i have to wait for 5 month to come back and send it to service !
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Aug 11, 2010
I have a compound UI component built up from a ViewGroup containing a number of TextView, ImageView etc. components. Many of these have StateListDrawables as their images/backgrounds. Is there any way of making them select from this drawable based on the state of the parent ViewGroup rather than the component itself? Ideally I want to be able to change the visual state of all children of the ViewGroup (text colour, image etc) based on the state of the ViewGroup, preferably without having to hook up complex logical code. This seems like a fairly common sort of requirement, so I was hoping it would be straightforward in Android - am I going to be disappointed?
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Feb 8, 2009
I'm a little confused by what I'm seeing with regards to phone state transitions via the PhoneStateListener. When I receive a call, this is what happens: (call comes in) RINGING -> IDLE (I pick up) OFFHOOK (I hang up) IDLE It's that first transition from RINGING to IDLE without any interaction from me (not ending the call, not answering the call) that confuses me. Do I really have to implement an idle counter to know that an incoming call has really ended? Seems like the reported phone state represents some sort of phone state that isn't the obvious one.Is this a bug or am I just not in tune with the paradigm here?
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Jan 3, 2013
I work on PCs, desktops, quite often and I don't ask for the monitor. Usually I have to come up with 1 of my monitors drag it out and plug it in in order to simply see the screen.
is there a way for me to run an application on my droid and have it appear to the PC as a monitor that it sees on a USB port?
To be clear, I'm not looking for VNC, RDP, or anything wireless, etcetera. What I am looking for is for my galaxy s3 to appear to the PC as a valid primary monitor for it to boot to. This allows me to see post and the operating system without having to use a large monitor.
in fact, I don't really even care if the phone acts as a touch screen. I can use the mouse or even the keyboard plugged into it I just need the droid to act as a monitor. If, on the other hand, the touch screen was seen as a viable input device, emulating a mouse, then that would just be a bonus.
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May 19, 2013
I have a couple of devices that have gotten laggy over time, and after installing System Monitor, all evidence points to 100% disk I/O usage. Something is reading/writing to memory constantly, pegging it at near 100%... but that's all I can determine.
Is there a app, or technique I can use that would show per-app I/O usage?
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Jul 2, 2010
I searched and cannot find an answer for this: I have not been to a hotel with a TV with an HDMI input, they typically have the red/white/yellow inputs. Is there a cable that is micro HDMI on one end and the three on the other end? I realize it won't be HDMI quality, but i could at least put movies up on the TV from my phone.
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Oct 11, 2011
So we all know that turning off background data is a massive battery saver. What I want to know is WHY? As in, what apps are doing what and when to use so much data. What app can I use to log this kind of data usage?
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Dec 20, 2012
Is it possible for a company you work for to monitor your 4G communications from your Android? For example, my company has WiFi, so typically I use 4G to communicate with my personal phone for personal business. Do you think my company can monitor my communications, phone calls, web browsing and texting???
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Nov 3, 2013
Is there an app or any way to find network traffic for an app at real time? They way Chrome/IE dev tools allow you to monitor network requests and response.
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Jul 8, 2012
Just ordered contract for our youngest. Bit worried about her going over and as it cannot be capped, any app (it's Android) that will monitor usage of minutes & data and preferably send a message (text, email or whatever!) to me when it gets to a set limit?
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Sep 3, 2013
I have a Google Nexus phone on Verizon and it has recently begun waking up on it's own with no apparent reason. It keeps doing this and kills the battery within an hour or so. It only seems to do this when running on battery. It does not happen while charging.
I wanted to know if there is a way to monitor what process/application is waking the phone up.
I have uninstalled the two apps that I remember installing since the problem began and I'd rather not go through having to uninstall every app to figure out what is causing it!
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Jan 26, 2010
New Android user here, I was thinking about getting NBA League Pass Mobile on my Nexus One, but I was wondering if there is any way to connect it to a TV or computer monitor via the micro USB connection. 3.7 inches is nice, but watching the game on a bigger display would be nicer.
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Jan 3, 2012
So I was poking around the internet and saw the new Lenovo LT 1421 USB portable monitor. URL>....
I found myself intrigued by it and was thinking about getting one as I travel a lot for business and find that not having that second monitor like I have on my desktop at the office is a major point of frustration.
I was looking at it and thinking to myself "man that looks a lot like a tablet." I got to searching the internet for ways to turn an android tablet into a secondary monitor and found Apps like iDisplay and AirDisplay (iPad only) and Screen Slider that work over wifi but those methods all seem to be really slow and laggy. It would be better than what I have for sure but given that I'm often on hotel Wifi and it requires a network connection between devices that leaves me open to some vulnerabilities I would assume.
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Aug 7, 2013
I've recently started playing alot on my Nexus 4 and i was wondering, is there a simple way to just hook up the cellphone to the PC via USB or if not, a cable stright to the monitor and see what i see on my phone just on my monitor?
It can't be anything like webkey since its slow, I need something that will give me the minimal 24fps.
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Sep 16, 2012
Is there a good app to monitor CPU temperature? Galaxy Nexus
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Jun 23, 2013
I was wondering if working in monitor mode mini galaxy s3 or where I can follow the evolution.
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Nov 30, 2012
Im looking for an application to monitor data usage, i know there are a lot but im looking for one specifically,
My plan is in fact 2 plans, it is unlimited for social networks (1GB @ 4G then EDGE till month expires), and 100Mb for any other applications.
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Aug 25, 2012
I have a Toshiba Excite 10 LE (AT200) Tablet running ICS 4.0.3 and have it connected to my TV using a micro-HDMI adapter and an HDMI cable.
It connects fine and I can see the image, but I have no toolbar (Back, Home, Task Switch, Clock, etc). I have tried to check if my TV has any overscan settings that could adjust this and have my TV set to 'Just Scan' which sets the overscan to 0, as opposed to 16:9 mode which cuts off part of the image, but there were no settings I seemed to be able to modify on the TV which allowed for the toolbar to show up.
Likewise in the Tablet menu, I don't see anything under Settings->Display which could show the menu bar. I know it is still there since I can drag my bluetooth mouse below the bottom of the screen and hit the Home button, but I'd really like to be able to see it.
I didn't see any apps in the market that allow you to adjust HDMI out overscan settings either.
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May 27, 2012
Why is it that when a new rom is ported/made usually HDMI never seems to be ported. they always write not working or just write dont ask.
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