本文主题：

使android程序运行过程中，屏幕背景灯保持唤醒，即不黑屏。

先上代码：

注意需要加权限

[html]view plain copy<uses-permissionandroid:name="android.permission.WAKE_LOCK"/>

[java]view plain copy/** * *@authorzhujianbin * */ publicclassUtils{ privatestaticWakeLockwl; /** *保持屏幕唤醒状态（即背景灯不熄灭） *@paramon是否唤醒 */ publicstaticvoidkeepScreenOn(Contextcontext,booleanon){ if(on){ PowerManagerpm=(PowerManager)context.getSystemService(Context.POWER_SERVICE); wl=pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK|PowerManager.ON_AFTER_RELEASE,"==KeepScreenOn=="); wl.acquire(); }else{ wl.release(); wl=null; } } }

解释：

用到的类

PowerManager

主要是这两个参数：PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ON_AFTER_RELEASE

下面是 android 官方API解释：

he following flags are defined, with varying effects on system power. These flags are mutually exclusive - you may only specify one of them.

一般要使程序运行过程中背景保持常亮，使用

SCREEN_BRIGHT_WAKE_LOCK 就可以，

SCREEN_BRIGHT_WAKE_LOCKCPU：唤醒 屏幕背光：唤醒 键盘灯：关闭

第二个参数：

In addition, you can add two more flags, which affect behavior of the screen only.These flags have no effect when combined with aPARTIAL_WAKE_LOCK.

如果觉得《Android 屏幕常亮》对你有帮助，请点赞、收藏，并留下你的观点哦！