How does the screen-off-gesture-detection work? - ONE Q&A, Help & Troubleshooting

I'm wondering how the feature in the OPO that recognize screen gestures, while the screen of the device is off, actually works? For example, the feature to double tap to awake the phone, or draw a circle to open the camera app. Does the screen really been turned off, or actually the screen is on, and just the screen is black. (this way the screen is on, hence can recognize the gestures, and on the other hand save battery energy).
Thanks!

itanbp said:
I'm wondering how the feature in the OPO that recognize screen gestures, while the screen of the device is off, actually works? For example, the feature to double tap to awake the phone, or draw a circle to open the camera app. Does the screen really been turned off, or actually the screen is on, and just the screen is black. (this way the screen is on, hence can recognize the gestures, and on the other hand save battery energy).
Thanks!
Click to expand...
Click to collapse
The display (what you seem to call the screen) is one thing and the touch digitizer is a different thing. The display turns off, but the touch panel stays active and listens for taps/gestures.

The Dork Knight Rises said:
The display (what you seem to call the screen) is one thing and the touch digitizer is a different thing. The display turns off, but the touch panel stays active and listens for taps/gestures.
Click to expand...
Click to collapse
Ok, and from development point of view, can one build an android app running on OPO that listens for gestures while the display is off? Meaning allowing the user to define gestures and their actions, expanding the OPO limited fixed gestures and their actions?
Thanks.

itanbp said:
Ok, and from development point of view, can one build an android app running on OPO that listens for gestures while the display is off? Meaning allowing the user to define gestures and their actions, expanding the OPO limited fixed gestures and their actions?
Thanks.
Click to expand...
Click to collapse
I don't think an app can do it. I think (if it is at all possible to add custom gestures) it'll have to be done in the kernel.

Related

[Q] screen issues

i been having problems with screen meaning everytime i am out during the daytime i can not see my screen what so ever. i was wondering if there is anyway to fix that? is there any apps i can download?
I installed a Widget called Brightness Level (free!) and assigned it to a Jump Key (Jump-X is what i used)
When it is pressed as a widget from a home screen, a pop-up appears with 0%, 25% 50%, 75%,. 100%, & Auto along with a slider-bar to set the screen brioghtness percentage.
Pressing the Jump key brings up the same app. the widget also shows the current setting percentage.
...using the Jump screen allows you to easily access the app even when the screen is completely dark.
sexiashley90 said:
i been having problems with screen meaning everytime i am out during the daytime i can not see my screen what so ever. i was wondering if there is anyway to fix that? is there any apps i can download?
Click to expand...
Click to collapse
any screen will do this in sunlight, turn your brightness to max by swiping your finger from left to right on the status bar and there are also anti glare screen protectors that cedll phone shops sell that may help
I have heard of that tip, but it only seems to work about 1/4 of the time (unless I am really bad at the whole swiping thing) that is why I set up the keyboard shortcut instead which works 98% of the time (assmuing the active program isn't stuck/frozen)
ncmacasl said:
I have heard of that tip, but it only seems to work about 1/4 of the time (unless I am really bad at the whole swiping thing) that is why I set up the keyboard shortcut instead which works 98% of the time (assmuing the active program isn't stuck/frozen)
Click to expand...
Click to collapse
Swiping only works if "Auto" is off, you can also just long touch a spot on the notification bar ;-) ex, left, middle, right or anywhere in between. this seems to work better than swiping for me.
Hope this helps.
you can also just got to settings>display>brightness, uncheck automatic, and adjust brightness that way. you can also assign a jump key shortcut to settings>display, as i just did. that pretty much eliminates the need for a widget.

[APP] Smart Screen ON

After the success of Smart Screen OFF, I decided to publish another app called Smart Screen ON available in LITE and PRO version too.
Smart screen ON
Smart Screen ON LITE
DESCRIPTION:
Smart screen ON is an innovative app which turns your proximity sensor into a power button. If you have a big phone with no physical button on the front(Galaxy Nexus for example, you can turn on or turn off the phone just tapping or waving your hand (finger) on proximity sensor.
FEATURES:
When you change the settings, remember saving and restarting service using built in app specific button.
There are two mode available, both mode can coexist:
+WAVE MODE:
Wave (move) your hand/finger on proximity sensor, even without touching it.
You can set the amount of waves you want to use to turn on/off screen and the time between each wave.
Do you want to wave your hand quickly or slowly?
+TAP AND SWIPE MODE:
1) Tap proximity sensor using your finger;
2) Wait for the first vibration;
3) Swipe (remove) quickly your finger, before it vibrates for the second time.
You can set the time before the first and the second vibration.
+DISABLE SENSOR
You can also disable sensor after an amount of time you can set in the app panel.
The app will disable the whole service and proximity sensor after X time of inactivity.
+STATISTICS
Statistics include:
A)Smart Screen ONs;
B)Smart Screen OFFs;
C)Total power button saves;
D)The power used by your proximity sensor (which is very very low).
+START ON BOOT
If you check this, the app will start on boot.
+HIDE ICON
If you hide the icon, the app could be instable and could be killed by Android in low memory conditions.
+ENABLE FOR TURNING SCREEN OFF
The app has been created to turn screen off, but I also give you the ability to turn screen off.
+DISABLE WHEN LANDSCAPE
The sensor will stop working when landscape.
+INCOMPATIBILITY
-HTC Desire HD is not compatible with "wave mode" because its proximity sensor doesn't work as it should.
If you want to suggest new features, please contact me on this thread, at [email protected] or use my site www.androidhd.it
first off love the app purchased the full version. i have a evo lte and when i disable the lock screen it will still pops up a random times but frequently. even thought in the settings it says no lock screen, i still get the lock screen is there a work around to get that to stop?
Concept is amazing, but how about battery stats? Have someone been using it for some time and can tell me its impact on the battery?
I purchased it from the Play store (to get rid of the notification bar icon). Works pretty well. I haven't been able to test this and see if running the app tolls the battery more, though I would think it most likely does.
When I wave my hand to wake up my device, it briefly displays my home screen (literally a split second) before the lock screen shows up. I haven't played with the app enough to figure out why it does this, I have my lock screen enabled for the record.
yea mine is disable and sometimes it works and sometimes it doesn't i haven't been able to figure out why.
i am also having a issue with the brightness on the screen i had it set to auto and when i would turn the screen on the display would become dimmed every now and then and it would stay dimmed until i would go into the brightness area and change the brightness then it would restore to normal. this happened with auto brightness set and manual brightness set.

[Q] Double Tap To Wake While On A Table

According to a tweet from HTC (https://twitter.com/htc/status/461511570959663104), you're supposed to be able to double tap the screen while it is sleeping in order to wake the device.
This doesn't work for me unless I do it really hard or have it in my hand. Anyone have the same experience? Any setting I need to change? Maybe it's my ROM? (Skyfall)
Are you using enough of your finger to tap it?
On mine I have to almost tap it with the full pad of the end of my finger. I can't just double-tap with the tip of my finger.
Yeah, that's never worked for me either. It seems like the sensor only gets activated once I pick it up.
Yeah someone in marketing was misinformed. Unless you're using a custom kernel, you need to move the device first to get it to wake from a tap or swipe
Thanks for the feedback. I ask because someone tweeted @ me: "Bring your unit back to the carrier you purchased it from. It's worked fine for us with no issue at all."
For me, I tap the screen once and then double tap it right after. Seems to do the job.
Sent from my HTC6525LVW using XDA Free mobile app
Settings, display and gestures, g sensor calibration. Calibrate it poorly intentionally slanted against a book or whatnot. It thinks your device is tilted when it is laying down.
Sent from my HTC6525LVW using Tapatalk
well really its like this ==> Settings/Display & gestures/Motion Launch Gestures/HELP =(look (close its really there =] ) and then under Double tap it reads "Pick up the phone in portrait orientation and double tap to wake " but if I really double tap mine while its laying flatly screen up with some force it wakes just make sure you really give it good tapping.
Other than that test to see if picking it first portrait orientation and give it a few taps and see if it wakes.
I just saw the post above mine that is a great answer/work around. I like that kind of thinking.
wtoj34 said:
Settings, display and gestures, g sensor calibration. Calibrate it poorly intentionally slanted against a book or whatnot. It thinks your device is tilted when it is laying down.
Sent from my HTC6525LVW using Tapatalk
Click to expand...
Click to collapse
I was going to reply with this exact method until I saw that you did so.
This works, and resolves the issue completely. now a light double tap even turns on the screen while it is laying flat.
It's a pretty simple concept. Unlike the LG G2, this phone came with some more smarts to save battery. The G2 device is ALWAYS active to receive phone taps, thus using more battery. The M8 device only once the phone is in motion it turns on the sensor to recieve any kind of double tap, thus saving battery! Pretty nice IMO and smart. Motion control window says itself you need to pick up device then double tap to activate.
For people who want to bypass this you can:
A. Tap the phone hard while on a desk thus causing the phone to move around waking up the motion sensor to activate double tap.
B. Give the G Sensor setting a bad setting so when device is laid flat on a surface the phone thinks it's not flat thus activating the double tap feature all the time thus using more battery.
So either love the feature for what it is or don't and us more battery.
The M8 double-tap to wake requires you to pick up the phone. The double-tap motion is not enough. If you double tap it while flat on a table it may work but usually it does not or very inconsistent.. Lift it and it will always work.
What's happening is when you move or pick up the phone the proximity sensor is activated, allowing the double-tap function to work, but after a few seconds of leaving it on the table, the sensor will shut off until it is disturbed again.
Orch4rd said:
What's happening is when you move or pick up the phone the proximity sensor is activated, allowing the double-tap function to work, but after a few seconds of leaving it on the table, the sensor will shut off until it is disturbed again.
Click to expand...
Click to collapse
Not quite. Pick it up upside down and tap - nothing will happen. Double tap to wake works only right side up in portrait - which makes a lot of Sense.
You don't want anything to wake it when it's upside down in your pocket, right?
berndblb said:
Not quite. Pick it up upside down and tap - nothing will happen. Double tap to wake works only right side up in portrait - which makes a lot of Sense.
You don't want anything to wake it when it's upside down in your pocket, right?
Click to expand...
Click to collapse
Interesting!
Actually I notice what's also keeping the double-tap function to work is the light senor, regardless the phone's position.
The sensor is located left of the front camera; try covering it up and see if you can double-tap to wake your phone
Orch4rd said:
Interesting!
Actually I notice what's also keeping the double-tap function to work is the light senor, regardless the phone's position.
The sensor is located left of the front camera; try covering it up and see if you can double-tap to wake your phone
Click to expand...
Click to collapse
Just tried it: Yes I can
No.. You definitely can't. Either you're not covering the sensor or you're not using a Verizon m8.
Confirmed.. Cover sensor, DT2W doesn't work.
berndblb said:
Not quite. Pick it up upside down and tap - nothing will happen. Double tap to wake works only right side up in portrait - which makes a lot of Sense.
You don't want anything to wake it when it's upside down in your pocket, right?
Click to expand...
Click to collapse
.
Hey how are things ?
No idea if supported on this device but wouldn't Swipe to Wake (Up) be better solution to Double Tap?
PS Need you over on Nexus 6P.
Born<ICs said:
.
Hey how are things ?
No idea if supported on this device but wouldn't Swipe to Wake (Up) be better solution to Double Tap?
PS Need you over on Nexus 6P.
Click to expand...
Click to collapse
Hey there. Long time no see. Wish i could afford the 6P... And i love the M8. Should be good for another year.

[APP][4.1+] Knockr - Lockscreen

After seeing a lot of comparison videos of the HTC One m8 and the Galaxy S5 I realized one of the big things HTC has is their motion launch gestures. Unfortunately for HTC it is limited to doing just a few things. So since the Galaxy S5 has an OLED screen which is turned "off" when displaying black pixels, I figured I could create something like the motion launch gestures that uses minimal battery.
So I created Knockr an app that allows users with OLED Screen devices, like the Samsung Galaxy S5 and Moto X, to quickly enter an app with gestures without having to turn the screen on.
Gestures include:
Double Tap: Double tap the screen to open any app you choose or unlock the screen
Swipe Up, Down, Left, Right: Users can set each Swipe to open a separate app or unlock the screen
Long Press: Long press the screen to open any app you choose or unlock the screen
Volume Up when in Landscape: Pressing the volume up button when the device is in Landscape will automatically open the camera
I am still working on improving some of the things in Knockr, but wanted to post it on here to get some feedback and suggestions to make it better.
Download Here​
**EDIT**
The newest update 2.1 now includes Knocks. Knocks is like LG's Knock Code. You can create multiple Knocks to unlock or open apps.
XDA:DevDB Information
Knockr, App for the Android General
Contributors
Acela1230
Version Information
Status: Beta
Created 2014-05-04
Last Updated 2014-12-01
Going to give it a try with my Galaxy S4 Mini, I hope it's not too harsh on the battery. Nevertheless this application seems like a great idea, Thank you.
EDIT: Seems to work very well. Just a few things I noticed.
-The screen can turn on by a single touch to the screen (it will then display lockscreen)
-The backlight keys turn on after the app is activated once the screen is locked (the keys are only on for a few seconds on my phone anyway, no big deal)
-Is it possible to decrease the delay between when the phone is locked and when the Knockr app is loaded/active?
Acela1230 said:
***FOR OLED SCREENS ONLY***
Click to expand...
Click to collapse
You said that this is for screens with OLED yet someone commented checking whether it would work with their S4 Mini. Now I thought that S4's had AMOLED which was different, if I'm mistaken, does this mean that it will work on my S4-19505?
Thanks, it looks brill by the way.
Nandish-
AM-(OLED) your device has an OLED display. It only works with OLED type screens cause they use no power to produce black screens.
Sent from my SAMSUNG-SM-G900A using XDA Premium HD app
Only one touch and the screen is awake to show the lock pattern on Samsung S4.
What an awesome app! My only recommendation is to take away the one tap to turn on the screen, as the screen can accidentally turn on in your pocket very easily and cause unwanted battery drain.
ViolentR said:
Going to give it a try with my Galaxy S4 Mini, I hope it's not too harsh on the battery. Nevertheless this application seems like a great idea, Thank you.
EDIT: Seems to work very well. Just a few things I noticed.
-The screen can turn on by a single touch to the screen (it will then display lockscreen)
-The backlight keys turn on after the app is activated once the screen is locked (the keys are only on for a few seconds on my phone anyway, no big deal)
-Is it possible to decrease the delay between when the phone is locked and when the Knockr app is loaded/active?
Click to expand...
Click to collapse
Thanks for the feedback. It shouldn't use much battery especially if you use the power management since you probably wont have your phone turned off to often outside of your pocket during the day and if you do you can just turn it over and still get the same benefit.
I have already uploaded a new version that has removed the single tap action so there aren't any false touches registered. It also made the screen on an option to choose for any of the gestures. It also fixes a bug that cause Knockr to close when the orientation was changed after being pocketed.
Unfortunately I don't think there is a way to load Knockr any faster since I already have it setup to load as fast as possible. The problem is that I have to use a broadcast receiver to receive the screen off and the broadcast takes a little bit of time to be sent out (I'll keep looking for ways to make it faster though).
Really cool app!
Few recommendations:
1. Any way to show clock and notifications every couple of seconds? (Ex 15s)
2. Way to bypass knockr when power button is pressed.
Thanks!
Sent from my Moto X using XDA Free mobile app
awesome app
awesome app.
but there is delay while unlocking phone (or performing any action while screen is locked).
i don't know it is because of my s3 or app
but cool idea.
one more suggestion screen should be unlocked after pressing power button.
mind blowing app.
works great.
thanks for this and keep going on.
it is really nice idea.
questions :
can it detect multi finger on screen off? we might get more gesture thts why only.
screen segmentation? means on some part of screen it detects then that gesture recognized.
just some ideas.
Awesome app. Just awesome. I didn't want to install a custom kernel just for this feature and now I don't have to. Working great at the moment. Power button is no use for unlocking but app is working with almost no hitch.
A suggestion for people who use this. Install screen on&off from play store and add that to nova launcher's double tap gesture to lock the screen. Now you can use double tap to both locking and unlocking.
Also, I have to swipe twice to open an app. Can't we do that with one swipe?
Edit: It opens with one swipe but it isn't always working. Needs some work.
Bug
found a bug :
proximity sensor always on for me on stock 4.4.2 Note 2 N7100.
whether i check power management or not.
App works on Galaxy S3, only that the proximity sensor thing for pockets, it isn't very accurate. I kinda cheated to test it, covered my sensor, then swiped left to try to launch camera, and it did. I didn't want my camera to be turned on and heating my phone in my pocket during school
Sent from my GT-I9305 using Tapatalk
I don't have a OLED lcd panel but I decided to try it. is it because I don't have a OLED panel that the screen shows black with 2 navigation buttons on it? And if that's the reason is there a way to make it work on TFT panels?
I am having this issue with my Verizon Moto X. Does it need any extra settings?
It installed on Galaxy Nexus (It is having SUPER AMOLED), when I double tap, screen wakes but shows black screen.
Cool app!
I can see navbar when i turn screen off though. And i can press power button and turn device off...
Im using a n7000 running Slimkat
underdog1799 said:
I am having this issue with my Verizon Moto X. Does it need any extra settings?
Click to expand...
Click to collapse
Same with Galaxy Nexus
pSyCh¤_O_O said:
Cool app!
I can see navbar when i turn screen off though. And i can press power button and turn device off...
Im using a n7000 running Slimkat
Click to expand...
Click to collapse
same for me
does your phone have a OLED screen?
Multi window bug
Acela1230 said:
***FOR OLED SCREENS ONLY***
After seeing a lot of comparison videos of the HTC One m8 and the Galaxy S5 I realized one of the big things HTC has is their motion launch gestures. Unfortunately for HTC it is limited to doing just a few things. So since the Galaxy S5 has an OLED screen which is turned "off" when displaying black pixels, I figured I could create something like the motion launch gestures that uses minimal battery.
So I created Knockr an app that allows users with OLED Screen devices, like the Samsung Galaxy S5 and Moto X, to quickly enter an app with gestures without having to turn the screen on.
Gestures include:
Double Tap: Double tap the screen to open any app you choose or unlock the screen
Swipe Up, Down, Left, Right: Users can set each Swipe to open a separate app or unlock the screen
Long Press: Long press the screen to open any app you choose or unlock the screen
Volume Up when in Landscape: Pressing the volume up button when the device is in Landscape will automatically open the camera
I am still working on improving some of the things in Knockr, but wanted to post it on here to get some feedback and suggestions to make it better.
Download Here​
XDA:DevDB Information
Knockr, a App for the Android General
Contributors
Acela1230
Version Information
Status: Beta
Created 2014-05-04
Last Updated 2014-05-04
Click to expand...
Click to collapse
Hey! This works very nicely! I'm having no problems so far. However, on my stock 4.4.2 Samsung Note 3 N900W8, I've noticed that if I have Multi Window on (use two apps at the same time), the multi window tab shows on the screen when Knockr becomes active. Specifically, I turn off my screen using the power button, and a second or two later the tab pops up. I don't know if this can be prevented without turning multi window off entirely, but thought I'd bring it up. Great app!

Tap to show lock screen (double tap) does not work when ambient display is off

Is anyone else having the same issue?
Double tap only works when the ambient display is showing (the clock before the lock screen).
If you turn off ambient display all together, double tap does not work.
dond74235 said:
Is anyone else having the same issue?
Double tap only works when the ambient display is showing (the clock before the lock screen).
If you turn off ambient display all together, double tap does not work.
Click to expand...
Click to collapse
Double tap works for me without ambient display being on.
I'm on stock 58.0.A.28.51.
Looks like it's one of the system apps whose permission I modified.
I just did a factory reset
It seems like a common issue with this phone. My tap to wake has never worked properly and it's driving me insane. Tap tap tap TAP TAAAAP, then it works. Sometimes.
Does anyone have a solution for this before I throw it out of the second floor window?
Yeah, that's one of the very few annoying things. I wonder if it has to do with the screen protector? There have been user reports of lower touch sensitivity (mostly at the edges of the screen) due to screen protectors.
Double tap isn't working again when ambient display is set to "OFF" and I have not messed around with system app permissions.
I did verify that 2x tap is working after I debloated the phone with AD set to "OFF". Not sure what has changed since then because I have not used this phone since debloat.
More details:
-2x tap will only work when AD is showing
-for as long as AD is showing that clock, 2x tap works
Double tap and lag-free notifications should work much better when you set "Smart activation" in Ambient display settings (lokk in "When to show Ambient display" settings).
Same issues, tried many things mentioned here and more ... you'd think simple things like this would work flawlessly in a high end phone. Really tired of digging and digging in the phone and online to find solutions, so frustrating. Sony will have to make something extraordinary in the future to convince me to buy another phone from them ...
It's way too long time have passed from the last post, but I was wondering about the same issue of double tap when searching for the answer had led me to this topic. I've recently bought two same phones, not Sony but Nokia 5.4 with Android 10 and stucked in gesture unlock too. Though this topic didn't helped me, later I've found the solution by myself and eager to share the way that did worked for me with everyone.
So, if the double tap to wake up the screen suddenly stopped working, try this:
1) go to Settings-System-Gestures
2) find the "double-tap wake" option and turn it OFF
3) back to home screen and lock the phone with the power button
4) unlock the phone with any way
5) go to Settings-System-Gestures
6) find the "double-tap wake" option and turn it ON
That's all, your favorite unlocking must work again (well, both my phones were healed). Good luck! )
Inversely, you can't disable tap to wake on the AOD.
Infuriating.
In any case, 3-taps always works for me
Including this phone and Pixel 2XL.

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