1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.contacts.common.location;
import android.app.IntentService;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.preference.PreferenceManager;
import android.util.Log;
import java.io.IOException;
import java.util.List;
/**
* Service used to perform asynchronous geocoding from within a broadcast receiver. Given a {@link
* Location}, convert it into a country code, and save it in shared preferences.
*/
public class UpdateCountryService extends IntentService {
private static final String TAG = UpdateCountryService.class.getSimpleName();
private static final String ACTION_UPDATE_COUNTRY = "saveCountry";
private static final String KEY_INTENT_LOCATION = "location";
public UpdateCountryService() {
super(TAG);
}
public static void updateCountry(Context context, Location location) {
final Intent serviceIntent = new Intent(context, UpdateCountryService.class);
serviceIntent.setAction(ACTION_UPDATE_COUNTRY);
serviceIntent.putExtra(UpdateCountryService.KEY_INTENT_LOCATION, location);
context.startService(serviceIntent);
}
@Override
protected void onHandleIntent(Intent intent) {
if (intent == null) {
Log.d(TAG, "onHandleIntent: could not handle null intent");
return;
}
if (ACTION_UPDATE_COUNTRY.equals(intent.getAction())) {
final Location location = intent.getParcelableExtra(KEY_INTENT_LOCATION);
final String country = getCountryFromLocation(getApplicationContext(), location);
if (country == null) {
return;
}
final SharedPreferences prefs =
PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
final Editor editor = prefs.edit();
editor.putLong(CountryDetector.KEY_PREFERENCE_TIME_UPDATED, System.currentTimeMillis());
editor.putString(CountryDetector.KEY_PREFERENCE_CURRENT_COUNTRY, country);
editor.commit();
}
}
/**
* Given a {@link Location}, return a country code.
*
* @return the ISO 3166-1 two letter country code
*/
private String getCountryFromLocation(Context context, Location location) {
final Geocoder geocoder = new Geocoder(context);
String country = null;
try {
double latitude = location.getLatitude();
// Latitude has to be between 90 and -90 (latitude of north and south poles wrt equator)
if (latitude <= 90 && latitude >= -90) {
final List<Address> addresses =
geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1);
if (addresses != null && addresses.size() > 0) {
country = addresses.get(0).getCountryCode();
}
} else {
Log.w(TAG, "Invalid latitude");
}
} catch (IOException e) {
Log.w(TAG, "Exception occurred when getting geocoded country from location");
}
return country;
}
}
|
