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[APP][2.3+][ROOT] Screen Backlight OFF (xda-exclusive free version)

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Hi,

I've developed a small app to switch off the screen backlight without switching off the screen completely. It requires root.

NEW: Video by MiroslavVitula: https://youtu.be/B7Wt3nIOdXg Thanks!

Why would I want to use this?
The typical use case is:
  1. You use a video player app.
  2. You only want to enjoy the sound/music.
  3. Thus, you want the display to be off to save battery or because the brightness annoys you.
However, most players stop the playback when the screen is turned off.
An often used workaround are apps which set the backlight brightness to a very low (but still visible) value and/or put an additional dark layer on the screen. On typical LCD displays both methods keep the backlight on. Thus, it will still emit light and use battery power.
This app turns off the screen backlight completely without switching off the screen.

How to turn the backlight on again?
Simply touch the screen.

What about OLED/AMOLED screens?
(Note: There are user reports where the app works on devices with AMOLED displays.)
An exception are OLED/AMOLED screens where the pixels itself emit light. I have no device with such a screen for testing. If you have one and test this app, please report whether it works or not.

It doesn't work!
  • If you're using MIUI ROM: Please enable "Show popup window" for this app via the system settings.
  • Make sure this app was granted root rights.
  • Make sure that no brightness control or similar app interferes with this app.
  • Do you know what the purpose of this app is? Please make sure before posting that "it doesn't work".
  • Please take a minute to search the thread. If there's already an answer/solution this saves both of us time.
  • Nothing helps? Post your device name, Android version, ROM name/version and describe exactly what you did, e.g., how you tried to use the app/what you clicked/etc.

Notes
This is an xda-exclusive free version! If you want to support me, please consider getting the paid version on Google Play or check out my other apps.
Please note: Redistribution of this app is not allowed!

Paid version on Google Play (same functionality): https://play.google.com/store/apps/d...enbacklightoff

Review on NaldoTech: http://www.naldotech.com/turn-the-sc...backlight-off/ (Thanks!)

Device compatibility: second post

Features:
  • Notification to quickly switch off screen backlight
  • Single or double tap to deactivate
  • Option to automatically activate when screen turns off
  • Configurable activation delay
  • Configurable overlay color and transparency
  • Timeout
  • Floating activation button (optional, enabled via additional notification)
  • Setting to keep screen on (usually not required)
  • Shortcut (allows other apps, e.g., automation tools, to switch off the backlight via this app)

Cheers,

cygery

Screenshots:



Changelog:
Quote:


v1.1.6.0:
added support for mode devices

v1.1.5.0:
small fixes and improvements

v1.1.4.0:
added: compatibility option for issues when using media control buttons

v1.1.3.0:
small fixes

v1.1.2.0:
small fixes and improvements

v1.1.1.0:
small fixes and improvements

v.1.1.0.0:
<b>NEW:</b> double tap to deactivate feature
<b>NEW:</b> option to activate when screen turns off
<b>NEW:</b> configurable overlay color
<b>NEW:</b> option to exit and remove notification(s) until app is started again
<b>NEW:</b> optional notification to show floating button to switch off backlight
<b>NEW:</b> timeout option
<b>NEW:</b> option to deactivate on phone call
small fixes and improvements

v1.0.3.0:
added support for more devices
small fixes
small improvements

v1.0.2.0:
small improvements

v1.0.1.0:
small fixes

v1.0.0.0:
initial release

Last edited by cygery; 16th June 2015 at 05:21 PM.
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22nd February 2015, 12:23 PM |#2  
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Device compatibility:

Please note: This is not an exhaustive list and only mirrors my current state of knowledge. If your device is neither listed in the "compatible" or "incompatible" list its compatibility isn't known yet. If you test it please report and I'll update the lists.

Compatible:
  • Android One
  • Coolpad F1
  • Dell venue 8 3830
  • HTC Desire 510
  • HTC EVO 4G LTE
  • HTC One M7
  • LG D410
  • LG G Flex
  • LG G2
  • LG G3
  • Motorola Moto G
  • Motorola Moto X 2014
  • Nexus 4
  • Nexus 5
  • Nexus 6
  • Nexus 7 (2012)
  • Nexus 7 (2013)
  • OnePlus One
  • Oppo Find 7
  • Samsung Galaxy Ace 3 LTE
  • Samsung Galaxy Note 1
  • Samsung Galaxy Note 2
  • Samsung Galaxy Note 3
  • Samsung Galaxy Note 3 LTE
  • Samsung Galaxy Note 4
  • Samsung Galaxy Note 8.0
  • Samsung Galaxy Note Pro 12.2
  • Samsung Galaxy S3 (Intl.)
  • Samsung Galaxy S3 LTE
  • Samsung Galaxy S4
  • Samsung Galaxy S4 Mini LTE
  • Samsung Galaxy S5
  • Samsung Galaxy S5 Mini
  • Samsung Galaxy Y
  • Sony Xperia M
  • Sony Xperia SP
  • Sony Xperia Z1
  • Sony Xperia Z2
  • Sony Xperia Z3 Dual
  • Xiaomi MI3
Incompatible:
  • Fonepad 7
  • Lenovo K900
Last edited by cygery; 2nd March 2015 at 08:44 PM.
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22nd February 2015, 12:23 PM |#3  
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(reserved2)
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22nd February 2015, 03:58 PM |#4  
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Works well on LG G3 with CloudyG3 2.1 ROM.
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22nd February 2015, 04:00 PM |#5  
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Xperia M with lollipop - works as intended.
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23rd February 2015, 02:13 AM |#6  
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Works well on my Nexus 5. Already set a widget to use it often

Send from the Matrix
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23rd February 2015, 05:56 AM |#7  
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Seems to be working well on my Sprint note 3 running jellybean. thank you for app and the work you put into it. Definitely worth a donation.

dschoenike
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23rd February 2015, 07:06 AM |#8  
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Will Try it in my OnePlus One...
23rd February 2015, 07:07 AM |#9  
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@cygery force closed on my galaxy y duos gt-s6102, running stock 2.3.6 rom. log attached.
Attached Files
File Type: txt 2015-02-23_12-53-01.txt - [Click for QR Code] (968 Bytes, 66 views)
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23rd February 2015, 07:15 AM |#10  
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Works on galaxy S5. ; )
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23rd February 2015, 08:15 AM |#11  
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hi ,
tested on Note 4 ( N910F ) Lollipop v5.0.1 ,works fine!
and solved one big annoyance for me ,
watching movie on tv (device via MHL3 connector + HDMI cable to tv )
backlight of device was always on .
Now i can switch device backlight off ( perfect for me ) !!
and save wasting unnecessary battery power .
Tested it also on Note 8.0 ( KitKat ) tab, works also fine .
good luck
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