如何打开锁屏android系统？

问题描述

我要调出设备的锁屏，如果一个按钮被点击。我搜索了很多，知道可以通过 DevicePolicyManager 做，但不知道该怎么做。我还发现了大量的例子，但他们都没有长大的锁屏（无误差）（例如，this或）
如何使用锁定装置 DevicePolicyManager ？

解决方案

That second link should work. It looks similar to my LockMeNow sample app, which I know works, as I just demonstrated it in a training class two days ago.

You need to implement a DeviceAdminReceiver whose manifest entry contains a <meta-data> link to a policy document that says that you want the ability to <force-lock /> the device.

Then, the user needs to agree to this, by going into Settings > Security > Device Administrators and enable your app as a device administrator. There is code in both my sample and the one that you linked to that contains code that checks to see if the app is a device administrator, and if not leads the user into Settings to go enable it.

Once that is done, you can obtain a DevicePolicyManager and call lockNow().

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