Android:打开和关闭屏幕而不锁定 [英] Android: Turn screen on and off without locking

问题描述

我需要关闭屏幕然后再打开，就像在打电话和将手机放在耳边一样.屏幕随后关闭，但它没有锁定或什么，只是黑色.

I need to turn the screen off and on like when you are doing a call and holding the phone to your ear. The screen then turns off but it isn't locked or anything, it's just black.

做到这一点的最佳方法是什么?如果有其他解决方案，我不想显示黑色的全屏活动...:)

What is the best way to do that? I don't want to show a black fullscreen activity if there is another solution...:)

推荐答案

有两种方法可以做到这一点，

There are two methods for doing that,

    PowerManager manager = (PowerManager) getSystemService(Context.POWER_SERVICE);

// method 1
manager.goToSleep(int amountOfTime);

// method 2
PowerManager.WakeLock wl = manager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "Your Tag");
wl.acquire();// It will swith off
wl.release(); // And swith on

还添加此权限，

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

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