android，以编程方式打开锁屏设置

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

DevicePolicyManager devicePolicyManager = (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
ComponentName componentName = new ComponentName(this, MyDeviceAdminReceiver.class);

if (devicePolicyManager.isAdminActive(componentName)) {
    // 如果设备管理器已激活，可以打开锁屏设置
    Intent intent = new Intent(DevicePolicyManager.ACTION_SET_NEW_PASSWORD);
    startActivity(intent);
} else {
    // 如果设备管理器未激活，需要先激活设备管理器
    Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
    intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, componentName);
    intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION, "请激活设备管理器以打开锁屏设置");
    startActivity(intent);
}

<receiver
    android:name=".MyDeviceAdminReceiver"
    android:permission="android.permission.BIND_DEVICE_ADMIN">
    <meta-data
        android:name="android.app.device_admin"
        android:resource="@xml/device_admin_receiver" />
    <intent-filter>
        <action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />
    </intent-filter>
</receiver>