CellLocation.java revision 9066cfe9886ac131c34d59ed0e2d287b0e3c0087 
1/*
2 * Copyright (C) 2006 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 */
16
17package android.telephony;
18
19import android.os.Bundle;
20import android.os.RemoteException;
21import android.os.ServiceManager;
22import android.telephony.gsm.GsmCellLocation;
23import com.android.internal.telephony.ITelephony;
24
25/**
26 * Abstract class that represents the location of the device.  Currently the only
27 * subclass is {@link android.telephony.gsm.GsmCellLocation}.  {@more}
28 */
29public abstract class CellLocation {
30
31    /**
32     * Request an update of the current location.  If the location has changed,
33     * a broadcast will be sent to everyone registered with {@link
34     * PhoneStateListener#LISTEN_CELL_LOCATION}.
35     */
36    public static void requestLocationUpdate() {
37        try {
38            ITelephony phone = ITelephony.Stub.asInterface(ServiceManager.getService("phone"));
39            if (phone != null) {
40                phone.updateServiceLocation();
41            }
42        } catch (RemoteException ex) {
43            // ignore it
44        }
45    }
46
47    /**
48     * Create a new CellLocation from a intent notifier Bundle
49     *
50     * This method is used by PhoneStateIntentReceiver and maybe by
51     * external applications.
52     *
53     * @param bundle Bundle from intent notifier
54     * @return newly created CellLocation
55     *
56     * @hide
57     */
58    public static CellLocation newFromBundle(Bundle bundle) {
59        return new GsmCellLocation(bundle);
60    }
61
62    /**
63     * @hide
64     */
65    public abstract void fillInNotifierBundle(Bundle bundle);
66
67    /**
68     * Return a new CellLocation object representing an unknown location.
69     */
70    public static CellLocation getEmpty() {
71        return new GsmCellLocation();
72    }
73}
74