Can screen brightness changes be tested in the Android emulator? I've tried various examples that all use the following code snippet:
WindowManager.LayoutParams lp = window.getAttributes();
lp.screenBrightness = (*some float percentage*);
window.setAttributes(lp);
But I don't see any change in brightness in the emulator. I've tested it in cupcake and 2.2.
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There are apparently at least three different techniques for changing screen brightness in the Android OS. Two of them no longer work post-cupcake and the third accepted technique evidently has a bug. I would like to increase screen brightness at the start of a one-view activity then turn the brightness back to the user setting at the end of the activity. No buttons, no second view or second activity. Just a maxed brightness at start and a return to original brightness setting at the end of the activity. The examples of the current technique using WindowManager.LayoutParams that I have located range from 2 lines of code
WindowManager.LayoutParams lp = getWindow().getAttributes();
lp.screenBrightness = 100 / 100.0f;
getWindow().setAttributes(lp);
To several pages of source code and numerous activities. Is there a simple example of maxing the screen brightness at start that someone can provide a link to?
I set auto brightness off and turn it all the way down cause the screen itself is bright already. but sometimes my brightness setting keep changing. i think an app does that?
View 2 Replies View RelatedI want to change the screen brightness programmatically in android.
WindowManager.LayoutParams lp = getWindow().getAttributes();
float brightness=1.0f;
lp.screenBrightness = brightness;
getWindow().setAttributes(lp);
But this sample code works on cutcake, not on latest versions. I am using latest version of SDK. How can I do it?
Anybody have any idea why this is not working under 2.2? (nexus one)
WindowManager.LayoutParams lp = getWindow().getAttributes();
lp.screenBrightness = 1.0f; getWindow().setAttributes(lp);
And yes, the auto-brightness is disabled under settings.
I use the following code to dim the screen in one of my apps...
View 2 Replies View RelatedI'm trying to control to turn screen off/on. I'm using device HTC G1 (1.6). To turn off screen I write:
WindowManager.LayoutParams lp = getWindow().getAttributes();
lp.screenBrightness = 0f;
getWindow().setAttributes(lp);
But if I want to turn on screen:
lp.screenBrightness = 1f;
getWindow().setAttributes(lp);
Screen not turn on.
if lp.screenBrightness = 0.02f;
screen change bright, but not turn off.
Which right way to control by screen?
To save power I keep the screen brightness down low - what I want to know is - is there any app that overrides this setting when my phone rings so that the screen goes to full brightness so I can tell properly who is calling me?
View 1 Replies View RelatedI have no clue how to disable the "auto screen brightness" in settings?
View 7 Replies View RelatedFor automated testing (using Hudson) I have a script that generates a bunch of emulators for many combinations of Android OS version, screen resolution, screen density and language.
This works fine, except for the language part.
I need to find a way to change the Android system locale automatically.
Here's some approaches I can think of, in order of preference:
Extracting/editing/repacking a QEMU image directly before starting the emulator
Running some sort of system-locale-changing APK on the emulator after startup
Changing the locale settings on the emulator filesystem after startup
Changing the locale settings in some SQLite DB on the emulator after startup
Running a key sequence (via the emulator's telnet interface) that would open the settings app and change the locale
Manually starting the emulator for each platform version, changing the locale by hand in the settings, saving it and archiving the images for later deployment
Any ideas whether this can be done, either via the above methods or otherwise?
Do you know where locale settings are persisted to/read from by the system?
I have updated his answer below with the details.
I am looking to add controls to adjust screen brightness locally in my app menu but can't seem to figure out how to do it. I have seen examples to max-out or dim brightness but I am looking to add controls so that the user can control and set the brightness level. Does anyone have any examples, tutorials, source code, or just a place to point me in the right direction?
View 3 Replies View RelatedI want to control the brightness of screen using a background service in android.
Existing Solutions:- There are similar question posted in the form in below link:-
http://stackoverflow.com/questions/1791340/adding-screen-brightness-controls-to-android-application
Why existing solution will not work? All the solution provided in the link works well with an Activity, but I want to write a Background Service which controls the brightness of the screen.
I have a htc sensation xl. My brightness control stopped working and I now I can't change the brightness anymore. It doesn't matter if I set to 30% or 100%, the brightness stays the same.I can only adjust the brightness from 0 to 25%. I already did and wipe and stiched a phone.
View 3 Replies View RelatedSo, what do you guys keep your screen brightness level at? I never use auto-brightness. I usually keep mine at 40-50%, day and night
View 10 Replies View RelatedWhat is yours set on?
View 21 Replies View RelatedThis screen is unnecessarily bright in total darkness- is there a better screen brightness app that can bring the backlight down more than the settings allow?
View 1 Replies View RelatedI am very anal about the brightness setting. I keep the setting very low to save battery. While indoors this is almost never a problem but when I go outside I can't see the screen. This makes it very hard to change the brightness. How do other people solve this or am I the only one that has this problem? Does anyone know of a way to map a button (like home button) and change the operation of the long press?
View 31 Replies View RelatedThe screen brightness on my epic will jump from 0% to 75%. I have auto brightness off and the power control widget is not on any of my screens. Does anyone know what is causing this and how I can fix it?
View 4 Replies View RelatedJust got my Galaxy S 2 days ago, loving it so far but does anyone know any app that works with adjusting the brightness for the phone beyond what default brightness setting . Even on the lowest setting it is still so bright, and on the battery use page it say that the display uses 65% of the battery.
View 14 Replies View RelatedI have a Versus tablet running 4,0 and have accidentally set the screen brightness to 0. I can't see the screen to reset the brightness back up again. The manual says to do a factory rest but needs you to see the screen to do this. Have tried resetting and Android recovery but no effect.
View 1 Replies View RelatedI'm currently building a custom ROM based on android 4.1.2 and I am having two questions:
1. In Settings -> Display -> Brightness there is no checkbox for automatic screen brightness. Can this feature be added (the check box to turn on/off the automatic brightness)?
2. When I activate the automatic screen brightness (using notification bar toggle) and the battery drains under 15% the brightness is setted to maximum and the Brightness page in settings can't be used, is there a way to fix this?
Any app that will automatically change the screen brightness based on a defined battery level. Preferably with the option to define how much the screen is dimmed as well.
View 1 Replies View RelatedLOCK screen aprears at the main screen, after boot the emulator boot up. I want to disable the locking at main screen, So that while next time i boot up my emulator not LOCK screen apears. Can any body suggest me best solution for this?
View 2 Replies View RelatedOk so I'm about a week and a half maybe more in with the froyo rom the newst one and while I love it especially the battery life. I'm experiencing some new problems that I don't recall having before. The screen will randomly turn off even though I have the screen delay set to 2 minutes. Other times it will just get dim to about 30 percent regardless of the brightness setting. I'm wondering if this is strict lg a hardware issue or something to do with the rom? I'm just afraid one time its not going to turn back on lol. Also I'm having data lockups where I have to restart the phone at least once a day. I don't recall experiencing this before. A little help and or understanding would be much appreciated on these 2 topics....also does anyone know of any better roms? Like one where wireless tethering app actually works? I have yet to have it work since installing this rom.
View 1 Replies View RelatedUntil now I had my screen set to auto brightness.First, +1 to those who said in other threads that the screen looks even better when you turn that off and put brightness all the way up.But my question here is why, on auto brightness, the screen sometimes increased or decreased brightness when I was using it. It happened all the time. The only thing I can rule out as the cause was time delay, because sometimes it happened as I was typing or just after, and sometimes it would happen after a delay. I think it must be connected to either orientation, or movement, or brightness sensor detecting the ambient light, or something.If I could figure out how to make it stop doing that I would go back to auto-brightness.
View 1 Replies View RelatedLong time lurker, please no flaming.The Droid has an awesome screen, especially when set at full brightness. However, I typically have it set at the lowest brightness to conserve battery. On my old Windows phone I was able to have the brightness adjust to full when it was plugged in. I've looked for this setting on the Droid and thus far have been unsuccessful in locating this ability.Does anyone know if this setting exists or if there is an app that would do this?
View 11 Replies View RelatedThe brightness of my sony xpreia x8 keeps varying on its own, even while i am using any application. Any idea on why this may be happening?
View 2 Replies View RelatedI set the brightness to the lowest.i turned off the automatic brightness adjustment and i also disabled the power saving mode on my captivate. however, the screen goes back to the brigthest sometimes. is anyone having the same problem?
View 16 Replies View RelatedI haven't had any screen issues in the past, but today my tablet randomly decided to go totally black on me. I looked online and some posts mentioned to check if the screen was actually off, or just stuck at 0% brightness. So I got a flashlight and it turned out that I could see the screen in the light of the flashlight, very faintly. I tried to manually change the brightness setting, but that didn't do anything. I tried to go into 'power saver settings', but the 'screen brightness' power saver setting is stuck on and won't uncheck. Restarting doesn't fix it. Plugging it in to the computer or an outlet doesn't fix it.
I haven't downloaded any applications that override the screen brightness.
I'm using the Galaxy Note 10.1 (not the 2014 version).
I have bought a HDC Galaxy Note 3 N9006 1:1 Quad Core model.
The specs are:
MTK6582 Quad cores 1.3GHz Cortex A9+SGX544 GPU
Ram : 1GB
Rom : 4GB(Support TF Card up to32GB)
First of all, the biggest problem is the battery life.. The phone is on for about 1 up to 2 hours of semi-heavy usage. The screen brightness is set to the lowest one and still the battery life is really low. I dont know whether this is a software fault or the chinese battery is simply crap, so i dont know if there is any point in buying a genuine Samsung Galaxy Note 3 battery.
Secondly, i have an error on some of my apps saying that "Google services that some of your apps rely on, is not supported by your device.. ( screenshot included)" how to fix this problem on this HDC model?
Thirdly for some reason i keep on getting a message about roaming, ( i cant see the message fully, screenshot included) and i have to register my network again for it to disappear for a short period of time and then i have to repeat the same process again.
Lastly, i cannot update my youtube application and i get an error saying that i need to uninstall the previous version of the app. But the problem is that it wont let me delete the previous version.