screen-brightness

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 2 years ago . I need to adjust screen brightness/contrast by using Python. It will be a function in my code and it will be run when user presses a key, else script won't change the brigness/contrast. How can i make it in Python? Thank you very much 回答1: I found what looks like a Linux-specific

问题 Is it possible to animate the screen brightness change on iOS 5.1+? I am using [UIScreen mainScreen] setBrightness:(float)] but I think that the abrupt change is ugly. 回答1: I don't know if this is "animatable" in some other way, but you could do it yourself. For instance the following example code was hooked up to "Full Bright" and "Half Bright" buttons in the UI. It uses performSelector...afterDelay to change the brightness by 1% every 10ms till the target brightness is reached. You would

问题 I am developing an iPhone application and I need to adjust the brightness of the screen through my application, in the same way as we do through the Settings app. I have searched but have not found a solution. 回答1: You can use: [[UIScreen mainScreen] setBrightness:1.0]; But only on iOS 5. Not supported on earlier iOS versions. 回答2: If you require compatibility with older iOS versions, try a black overlay on top of your application's main window with partial alpha. I used it in an iPad app -

问题 I'm using this code in my AsyncTask to make sure the screen stays bright while the AsyncTask runs: getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); However, I don't want the screen to be forced to be bright after the AsyncTask has ran. How can I essentially 'undo' or 'turn off' that option? 回答1: In your onPostExecute method in your AsyncTask call getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); See this question for more help. 来源： https:/

问题 I have an application which works in a hands busy environment so the user rarely touches the device. Of course, the phone goes into auto-lock and my app stops working. I used this code: [[UIApplication sharedApplication] setIdleTimerDisabled:YES]; to prevent the device and that is fine. However, I would still like the screen to auto-dim. The above code keeps the screen from auto-dimming as well as auto-locking. This question shows me how I can dim the screen manually, and that just may be a

问题 I'm trying to update the display brightness from a widget but i have some problems. To change brightness level, i use: Settings.System.putInt(context.getContentResolver(),android.provider.Settings.System.SCREEN_BRIGHTNESS, 200); This modifies the display setting (in fact in Display->Brightness the level is correct) but the effective brightness of display is not changed. If i lock the screen and unlock, the brightness finally changes to the value i set. I assume this is a Settings Update issue

问题 I want ajust screen brightness by my self. Because Windows lets me only adjusting in limited range. I want dim the display from 0 to 100% and turning it off/on. It should be possible if windows can it do automatically (Dim display after: x minutes/Turn off display after: x minutes). I tried some sources and classes what I found by google. But no of them works. Have you ever tried this or can you recommend me any working code? Thanks for responds. 回答1: You can use the WmiSetBrightness method:

问题 I want to change the screen brightness programmatically in android. At the moment I use this code: WindowManager.LayoutParams lp = getWindow().getAttributes(); float brightness=1.0f; lp.screenBrightness = brightness; getWindow().setAttributes(lp); But this sample code works on cupcake, not on latest versions. I am using the latest version of SDK.. What is the preferred solution for newer Android Versions? 回答1: How about using the IHardwareService interface for this? An example can be found in

问题 I was searching how to change the brightness of the screen programmatically and I found this it is very good solution and it works nice, but it works only while my app is active. After my application is shutdown then the brightness is returned back the the same value as before I start my app. I want to be able to change the brightness just like when I press on the brightness button from my power widget. In the power widget that comes from android there are 3 states. One very bright one very

问题 I have searched extensively and couldn't find a similar question. I would like to know if there is any way to detect when the screen brightness of a mobile device has been changed. I have already tried to store the old value when the app starts and repeatedly check using Settings.System.getInt(getContentResolver(),Settings.System.SCREEN_BRIGHTNESS); to compare the initial and final value of screen brightness , which is not a good way of doing so. Thanks EDIT: This question states that I have