blob: d0d07e8cbb547dae6d6f02cf01cb3d956148e4ca (
plain)
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
|
package cgeo.geocaching.location;
import cgeo.geocaching.utils.Log;
import cgeo.geocaching.utils.RxUtils;
import org.apache.commons.collections4.CollectionUtils;
import org.eclipse.jdt.annotation.NonNull;
import rx.Observable;
import rx.functions.Func0;
import android.content.Context;
import android.location.Address;
import android.location.Geocoder;
import java.util.List;
import java.util.Locale;
public class AndroidGeocoder {
private final Geocoder geocoder;
public AndroidGeocoder(final Context context) {
geocoder = new Geocoder(context, Locale.getDefault());
}
/**
* Retrieve addresses from a textual location using Android geocoding API. The work happens on the network
* scheduler.
*
* @param keyword
* the location
* @return an observable containing zero or more locations
*
* @see Geocoder#getFromLocationName(String, int)
*/
public Observable<Address> getFromLocationName(@NonNull final String keyword) {
if (!Geocoder.isPresent()) {
return Observable.error(new RuntimeException("no Android geocoder"));
}
return Observable.defer(new Func0<Observable<Address>>() {
@Override
public Observable<Address> call() {
try {
return addressesToObservable(geocoder.getFromLocationName(keyword, 20));
} catch (final Exception e) {
Log.i("Unable to use Android reverse geocoder: " + e.getMessage());
return Observable.error(e);
}
}
}).subscribeOn(RxUtils.networkScheduler);
}
/**
* Retrieve the physical address for coordinates. The work happens on the network scheduler.
*
* @param coords the coordinates
* @return an observable containing one location or an error
*/
public Observable<Address> getFromLocation(@NonNull final Geopoint coords) {
if (!Geocoder.isPresent()) {
return Observable.error(new RuntimeException("no Android reverse geocoder"));
}
return Observable.defer(new Func0<Observable<Address>>() {
@Override
public Observable<Address> call() {
try {
return addressesToObservable(geocoder.getFromLocation(coords.getLatitude(), coords.getLongitude(), 1));
} catch (final Exception e) {
Log.i("Unable to use Android reverse geocoder: " + e.getMessage());
return Observable.error(e);
}
}
}).subscribeOn(RxUtils.networkScheduler).first();
}
private static Observable<Address> addressesToObservable(final List<Address> addresses) {
return CollectionUtils.isEmpty(addresses) ?
Observable.<Address>error(new RuntimeException("no result from Android geocoder")) :
Observable.from(addresses);
}
}
|
