Android的Java的：打开屏幕关闭 [英] Android Java : Turn screen Off

问题描述

我想提出的ON和OFF打开屏幕，接近传感器的应用程序。 接近code结束，但我使用的屏幕控制了麻烦。

I am making an application that turn the screen ON and OFF with the proximity sensor. The proximity code is finished, but i got trouble using the screen controls.

我看过，我应该使用，

PowerManager manager = (PowerManager) getSystemService(Context.POWER_SERVICE);
manager.goToSleep(int amountOfTime);

对于这一点，我需要授予为了让它工作的特殊权限，但我还没有想出如何做到这一点。

For that, I need to grant special permissions in order to make it works, but I haven't figured out how to do it.

另外，我看了一下改变屏幕亮度

Also, I have read about changing screen brightness

WindowManager.LayoutParams params = getWindow().getAttributes();
            params.flags |= LayoutParams.FLAG_KEEP_SCREEN_ON;
            params.screenBrightness = 0;
            getWindow().setAttributes(params);

不过，这种方式只关闭屏幕上的我的应用程序;如果我的应用程序在后台运行，这是行不通的。

But this way only turn the screen off on my application; it doesn't work if my application is running in background.

我也看到了有关使用Wakelock（我用它们来唤醒我的手机从屏幕关闭），但是当

I have also read about using Wakelock (i use them to wake my phone from screen-off), but when

PowerManager manager = (PowerManager) getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock wl = manager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "Your Tag");
wl.acquire();
wl.release();

但是，当我做到这一点，没有任何反应。

But when I do that, nothing happens.

有没有其他办法做到这一点？

Is there any other way to do it ?

推荐答案

您需要给你的应用程序正确的权限做到这一点：

You need to give your App the right permissions to do that:

添加＆LT;使用-权限的Andr​​oid：名称=android.permission.DEVICE_POWER/＆GT; 你的＆LT内部清单，清单＆GT ; 标签

如果你想保持你的屏幕上使用这个建议的那样，戴安娜Hackborn在谷歌加： KeepScreenOn

If you want to keep your Screen on use this, as suggested by Dianne Hackborn on Google Plus: KeepScreenOn

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