I 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?
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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 RelatedCan 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.
Let's say that I have two layouts for a widget: Layout1 and Layout2. The default for the widget is Layout1, but I allow the user to choose which layout they want the widget to be. So if the user changes to Layout2, how do I programmatically change the layout to Layout2? There isn't a setContentView method for widgets like there is for Activities.
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if it's possible in Android to programatically change the phone internet settings (proxies also), email settings and other similar? Is there some kind of registry? and what about getting the lost/received/etc calls? is it possible to get that info?
View 1 Replies View RelatedAnybody 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...
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View 1 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?
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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.
About custom Power Management... Is it allow for my app to dim the screen programmatically??, the goal would be to send the phone sleeping when a Intent.ACTION_BATTERY_CHANGED event is handled by a BroadcastReceiver, just like its done automatically by the OS (if so configured) after x time of inactivity.
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How to get the screen density programmatically in android?
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I am working on a remote automated test framework for Android based on JUnit (tests run outside android, interacting with code inside it). It's all working fairly well, but one issue I have is that when I automatically start a fresh emulator, the screen starts out locked. This appears to affect my tests being able to run, plus, I want to watch the tests run (buttons clicked, text typed, etc.). If I manually start an emulator and unlock its screen, all works well.
Is there a way to programmatically unlock the screen in Android? A Java API, a command line or shell command, etc. would all be fine. Barring that, perhaps there is a way to start an emulator unlocked?
So, 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
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