![]() ![]() You're probably using the Balanced power plan.Ĭonfigure different screen brightness levels for "On battery" and "Plugged in" under "Adjust plan brightness." This setting is tied to your power plan. Select "Hardware and Sound," select "Power Options," and click the "Change plan settings" link next to the power plan you're using. Windows would then automatically adjust your brightness. For example, you could have it set to a high brightness level when you're plugged in, and a lower one when you're on battery power. ![]() You can set different display brightness levels on your laptop or tablet based on whether or not you're plugged into an outlet or not. Related: Should You Use the Balanced, Power Saver, or High Performance Power Plan on Windows? So try to avoid method 1 on the page that contains the view.How to Automatically Adjust Brightness When You're Plugged In The page displayed by method 234 will automatically release SCREEN_BRIGHT_WAKE_LOCK whenever the page returns to the background. If it is flashing excessive pages, you can use method 4 to configure keepScreenOn=true in xml, because this type of page has a short duration and does not need to consider the automatic release mechanism. Or set _KEEP_SCREEN_ON and setTurnScreenOn(true) ģ. If the screen is bright in a page containing view resources such as activity and fragment, it is recommended to use methods 2 and 3 and set tKeepScreenOn(true) There must be a place to release the wakelock, otherwise it will continue to brighten the screen, CPU active will have a greater impact on power consumption.Ģ. It is recommended to use wakelock.acquire(xxxx) with parameters. If it is to brighten the screen and wake up the CPU in the receiver and broadcast, you can only use wakelock. Therefore, only when it is determined that the screen will not be held when the screen is displayed, you can configure the bright screen in xml, such as a splash screen page, excessive pages, these pages generally cannot last too long.ġ. Later found that SCREEN_BRIGHT_WAKE_LOCK was not released. But the actual use is very different, because keepScreenOn=true is set in xml, getWindow().clearFlags(_KEEP_SCREEN_ON) is executed in the code public void release(int flags) )įrom the phenomenon, it has the same effect as methods 2 and 3. Because PowerManager has two count values, mInternalCount and mExternalCount, mExternalCount will not be operated when the system is automatically released. Even if it is automatically released by the system handler after manual release, it will not crash. The system with parameters will be automatically released. ![]() Wakelock.acquire() is not recommended for use without parameters. | PowerManager.ACQUIRE_CAUSES_WAKEUP), "reminder:") PowerManager.WakeLock wakeLock = pm.newWakeLock((PowerManager.SCREEN_BRIGHT_WAKE_LOCK PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE) Method 1 is generally used in non-activity, fragment, can not operate UI interface services, such as service, receiver. Method 4: Set android:keepScreenOn="true" in xml Let's talk about the comparison of the above four methods: Method 3: Set _KEEP_SCREEN_ON and setTurnScreenOn(true) ![]() Method 2: Set tKeepScreenOn(true) in the view Method 1: Get wakelock through PowerManager. There are four commonly used methods, as follows: In Android app development, in order to allow a certain page to be displayed for a certain period of time, you need to set the bright screen code. ![]()
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