Android 系统级APP锁屏

系统级APP锁屏"/>

Android 系统级APP锁屏

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

代码：
DevicePolicyManager devicePolicyManager = (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
ComponentName adminComponent = new ComponentName(this, WDeviceAdminReceiver.class);
if (devicePolicyManager.isAdminActive(adminComponent)) {devicePolicyManager.lockNow();
} else {// 如果设备管理器未激活，请提示用户激活设备管理器Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, adminComponent);intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION, "请激活设备管理器以使用锁屏功能");startActivity(intent);
}

广播：

public class WDeviceAdminReceiver extends DeviceAdminReceiver {
//空的就行
}

<receiverandroid:name=".WDeviceAdminReceiver"android:permission="android.permission.BIND_DEVICE_ADMIN"android:exported="true"><meta-dataandroid:name="android.app.device_admin"android:resource="@xml/device_admin" /><intent-filter><action android:name="android.app.action.DEVICE_ADMIN_ENABLED" /><action android:name="android.app.action.DEVICE_ADMIN_DISABLED" /></intent-filter>
</receiver>

res下创建XML文件夹创建device_admin：：

<?xml version="1.0" encoding="utf-8"?>
<device-admin xmlns:android=""><uses-policies><force-lock /></uses-policies>
</device-admin>