1/*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package android.app.admin;
17
18import android.app.Service;
19import android.content.ComponentName;
20import android.content.Intent;
21import android.os.IBinder;
22
23/**
24 * Base class for a service that device owner/profile owners can optionally have.
25 *
26 * <p>The system searches for it with an intent filter with the
27 * {@link DevicePolicyManager#ACTION_DEVICE_ADMIN_SERVICE} action, and tries to keep a bound
28 * connection as long as the hosting user is running, so that the device/profile owner is always
29 * considered to be in the foreground.  This is useful to receive implicit broadcasts that
30 * can no longer be received by manifest receivers by apps targeting Android version
31 * {@link android.os.Build.VERSION_CODES#O}.  Device/profile owners can use a runtime-registered
32 * broadcast receiver instead, and have a {@link DeviceAdminService} so that the process is always
33 * running.
34 *
35 * <p>Device/profile owners can use
36 * {@link android.content.pm.PackageManager#setComponentEnabledSetting(ComponentName, int, int)}
37 * to disable/enable its own service.  For example, when a device/profile owner no longer needs
38 * to be in the foreground, it can (and should) disable its service.
39 *
40 * <p>The service must be protected with the permission
41 * {@link android.Manifest.permission#BIND_DEVICE_ADMIN}.  Otherwise the system would ignore it.
42 *
43 * <p>When the owner process crashes, the service will be re-bound automatically after a
44 * back-off.
45 *
46 * <p>Note the process may still be killed if the system is under heavy memory pressure, in which
47 * case the process will be re-started later.
48 */
49public class DeviceAdminService extends Service {
50    private final IDeviceAdminServiceImpl mImpl;
51
52    public DeviceAdminService() {
53        mImpl = new IDeviceAdminServiceImpl();
54    }
55
56    @Override
57    public final IBinder onBind(Intent intent) {
58        return mImpl.asBinder();
59    }
60
61    private class IDeviceAdminServiceImpl extends IDeviceAdminService.Stub {
62    }
63
64    // So far, we have no methods in this class.
65}
66