thoerup/traininfo/LocationLookup.java

package dk.thoerup.traininfo;


import android.content.Context;
import android.content.SharedPreferences;
import android.location.GpsSatellite;
import android.location.GpsStatus;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.util.Log;


public class LocationLookup implements LocationListener, GpsStatus.Listener {
        
        public enum LookupStates {
                GOTLOCATION,
                NOPROVIDER,
                STARTED,
                IDLE
        }

        private LocationManager locManager;
        private Context cntx;

        private Location savedLocation = null;
        private int satCount;
        
        private boolean hasGps;
        
        private LookupStates state;
        
        private long startTime;

        public LocationLookup(Context c) {
                state = LookupStates.IDLE;
                cntx = c;
        }
        
        
        public boolean hasLocation() {
                return savedLocation != null;
        }
        
        public Location getLocation()
        {
                return savedLocation;
        }
        
        public boolean hasGps() {
                return hasGps;
        }
        
        public int getSatCount() {
                return satCount;
        }
        
        public LookupStates getState() {
                return state;
        }
        
        
        public long elapsedTime() {
                long now = android.os.SystemClock.elapsedRealtime();
                
                return now - startTime;
        }

        public void locateStations() {
                
                state = LookupStates.STARTED;
                
                hasGps = false;
                locManager = (LocationManager) cntx.getSystemService(Context.LOCATION_SERVICE);
                satCount = 0;
                
                startTime = android.os.SystemClock.elapsedRealtime(); 
                
                boolean hasProvider = false;
                
                SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(cntx);
                String networkPref = prefs.getString("location", "GPS"); //default value is gps
                
                if (networkPref.equals("GPS")) {
                        if (locManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
                                locManager.addGpsStatusListener(this);
                                locManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
                                
                                hasGps = true;
                                hasProvider = true;
                        }
                }
                
                if (locManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {
                        locManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, this);
                        hasProvider = true;                     
                }
                
                        
                if (hasProvider == false) {
                        // message that no suitable provider was found
                        //hndl.sendEmptyMessage(StationList.NOPROVIDER);
                        state = LookupStates.NOPROVIDER;
                        
                }
        }
        @Override
        public void onLocationChanged(Location location) {              
                Log.i("Location", "Got location fix " + location.getLatitude() + ", " + location.getLongitude() + " accuracy=" + location.getAccuracy() + " provider=" +location.getProvider());
                

                if (savedLocation == null || location.getAccuracy() < savedLocation.getAccuracy())
                        savedLocation = new Location(location); //save a copy
                
                if (hasGps) {
                        if (!location.getProvider().equals("gps")) {
                                return; // at least give the gps a chance
                        } else if (location.getAccuracy() > 512) {
                                return; //if we have a gps provider lets wait for a more precise fix
                        }

                }
                stopSearch();
                state = LookupStates.GOTLOCATION;

        }
        
        
        public void stopSearch()
        {
                if (state == LookupStates.STARTED) {
                        state = LookupStates.IDLE;
                        locManager.removeGpsStatusListener(this);
                        locManager.removeUpdates(this);
                }
        }


        @Override
        public void onProviderDisabled(String provider) {
        }


        @Override
        public void onProviderEnabled(String provider) {
        }


        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {
                // TODO Auto-generated method stub

        }


        @Override //GpsStatus.Listener
        public void onGpsStatusChanged(int event) {
                if (event == GpsStatus.GPS_EVENT_SATELLITE_STATUS) {
                        int count = 0;
                        GpsStatus status =  locManager.getGpsStatus(null);
                        for (GpsSatellite sat : status.getSatellites()) {
                                count ++;
                        }                       
                        
                        satCount = count;
                }
                
        }
}
1	torben	237	package dk.thoerup.traininfo;
2
3
4			import android.content.Context;
5	torben	1446	import android.content.SharedPreferences;
6	torben	1142	import android.location.GpsSatellite;
7			import android.location.GpsStatus;
8	torben	237	import android.location.Location;
9			import android.location.LocationListener;
10			import android.location.LocationManager;
11			import android.os.Bundle;
12	torben	1446	import android.preference.PreferenceManager;
13	torben	237	import android.util.Log;
14
15
16	torben	1142	public class LocationLookup implements LocationListener, GpsStatus.Listener {
17	torben	1143
18			public enum LookupStates {
19			GOTLOCATION,
20			NOPROVIDER,
21			STARTED,
22			IDLE
23			}
24	torben	319
25	torben	1143	private LocationManager locManager;
26			private Context cntx;
27	torben	237
28	torben	1143	private Location savedLocation = null;
29			private int satCount;
30	torben	286
31	torben	1143	private boolean hasGps;
32
33			private LookupStates state;
34
35			private long startTime;
36	torben	241
37	torben	1143	public LocationLookup(Context c) {
38			state = LookupStates.IDLE;
39	torben	237	cntx = c;
40			}
41
42	torben	285
43			public boolean hasLocation() {
44			return savedLocation != null;
45			}
46	torben	319
47			public Location getLocation()
48			{
49			return savedLocation;
50			}
51	torben	488
52	torben	1143	public boolean hasGps() {
53			return hasGps;
54			}
55
56			public int getSatCount() {
57			return satCount;
58			}
59
60			public LookupStates getState() {
61			return state;
62			}
63
64
65			public long elapsedTime() {
66			long now = android.os.SystemClock.elapsedRealtime();
67
68			return now - startTime;
69			}
70	torben	237
71			public void locateStations() {
72	torben	336
73	torben	1143	state = LookupStates.STARTED;
74	torben	336
75	torben	286	hasGps = false;
76	torben	237	locManager = (LocationManager) cntx.getSystemService(Context.LOCATION_SERVICE);
77	torben	1143	satCount = 0;
78
79			startTime = android.os.SystemClock.elapsedRealtime();
80	torben	241
81	torben	1209	boolean hasProvider = false;
82
83	torben	1446	SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(cntx);
84			String networkPref = prefs.getString("location", "GPS"); //default value is gps
85
86			if (networkPref.equals("GPS")) {
87			if (locManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
88	torben	1209	locManager.addGpsStatusListener(this);
89	torben	1446	locManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
90
91			hasGps = true;
92			hasProvider = true;
93	torben	1209	}
94			}
95	torben	1446
96			if (locManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {
97			locManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, this);
98			hasProvider = true;
99			}
100
101	torben	1209
102			if (hasProvider == false) {
103	torben	237	// message that no suitable provider was found
104	torben	1142	//hndl.sendEmptyMessage(StationList.NOPROVIDER);
105	torben	1143	state = LookupStates.NOPROVIDER;
106	torben	1142
107	torben	237	}
108			}
109			@Override
110	torben	1143	public void onLocationChanged(Location location) {
111	torben	237	Log.i("Location", "Got location fix " + location.getLatitude() + ", " + location.getLongitude() + " accuracy=" + location.getAccuracy() + " provider=" +location.getProvider());
112	torben	336
113	torben	237
114	torben	286	if (savedLocation == null \|\| location.getAccuracy() < savedLocation.getAccuracy())
115			savedLocation = new Location(location); //save a copy
116	torben	241
117	torben	286	if (hasGps) {
118			if (!location.getProvider().equals("gps")) {
119			return; // at least give the gps a chance
120	torben	948	} else if (location.getAccuracy() > 512) {
121	torben	286	return; //if we have a gps provider lets wait for a more precise fix
122			}
123	torben	237
124	torben	286	}
125	torben	336	stopSearch();
126	torben	1143	state = LookupStates.GOTLOCATION;
127
128	torben	241	}
129	torben	336
130	torben	488
131	torben	336	public void stopSearch()
132			{
133	torben	1143	if (state == LookupStates.STARTED) {
134			state = LookupStates.IDLE;
135	torben	1142	locManager.removeGpsStatusListener(this);
136	torben	336	locManager.removeUpdates(this);
137			}
138			}
139	torben	319
140	torben	237
141			@Override
142			public void onProviderDisabled(String provider) {
143			}
144
145
146			@Override
147			public void onProviderEnabled(String provider) {
148			}
149
150
151			@Override
152			public void onStatusChanged(String provider, int status, Bundle extras) {
153			// TODO Auto-generated method stub
154
155			}
156	torben	1142
157
158			@Override //GpsStatus.Listener
159			public void onGpsStatusChanged(int event) {
160			if (event == GpsStatus.GPS_EVENT_SATELLITE_STATUS) {
161			int count = 0;
162			GpsStatus status = locManager.getGpsStatus(null);
163			for (GpsSatellite sat : status.getSatellites()) {
164			count ++;
165	torben	1143	}
166	torben	1142
167	torben	1143	satCount = count;
168	torben	1142	}
169
170			}
171	torben	237	}