Android在应用程式中保持萤幕开启 [英] Android Keep Screen On In App

问题描述

我有一个运行前台服务的android应用，当该服务运行时，我希望为用户提供保持屏幕打开的选项.

I have an android app which runs a foreground service and while that service is running I would like to give the user the option to keep the screen on.

我在设置首选项中添加了一个复选框首选项，如果为true，我想保持屏幕打开，但默认情况下将其设置为关闭.这只是我的用户所要求的.目前我有偏好，但是当我运行该服务时，我的屏幕仍然关闭，这是我已经完成的事情

I added to my settings preferences, a checkbox preference and if true, I would like to keep the screen on but have it set to off by default. It's just something my users have asked for. Currently i have the preference on but when I run the service my screen still shuts of here is what I've done

全局变量

private static final String PREFS_DEVICE = "DeviceInfo";

代码和if语句

SharedPreferences settings = getSharedPreferences(PREFS_DEVICE, 0);
            if(settings.getBoolean("screenPref", false)) {
                final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
                this.mWakeLock = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, "My Tag");
                this.mWakeLock.acquire();
            }

，然后我将其添加到清单中

<uses-permission android:name="android.permission.WAKE_LOCK" />

我在做错什么吗?是否有通过服务执行此操作的其他方法，或者只是无法通过服务执行此操作(希望不是这种情况).

Is there something I'm doing wrong. Is there a different way to do this from a service or is it just not possible from a service (hope that's not the case).

推荐答案

尝试一下:

mWakeLock = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ON_AFTER_RELEASE,         
                            "");    
mWakeLock.acquire();

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