thoerup/traininfo/StationList.java

package dk.thoerup.traininfo;

import java.util.ArrayList;
import java.util.List;
import java.util.Locale;

import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.ListView;
import dk.thoerup.traininfo.provider.ProviderFactory;
import dk.thoerup.traininfo.provider.StationProvider;
import dk.thoerup.traininfo.stationmap.GeoPair;
import dk.thoerup.traininfo.stationmap.StationMapView;
import dk.thoerup.traininfo.util.MessageBox;

public class StationList extends ListActivity  {
        public static final int GOTLOCATION = 1001;
        public static final int GOTSTATIONLIST = 1002;
        public static final int NOPROVIDER = 1003;
        public static final int LOCATIONFIXTIMEOUT = 1004;
        
        public static final int OPTIONS_RESCAN = 2001;
        public static final int OPTIONS_NAMESEARCH = 2002;
        public static final int OPTIONS_MAP = 2003;
        public static final int OPTIONS_ABOUT = 2004;

        
        public static final int DLG_PROGRESS = 3001;
        public static final int DLG_STATIONNAME = 3002;
        
        /** Called when the activity is first created. */
        String dialogMessage = "";
        ProgressDialog dialog;
        LocationLookup locator = null;
        LocatorTask locatorTask;
        StationsFetchedHandler stationsFetched = new StationsFetchedHandler();
        
        GeoPair location = new GeoPair();
        
        boolean isRunning = false;
        List<StationBean> stations = new ArrayList<StationBean>();
        
        StationProvider stationProvider = ProviderFactory.getStationProvider();
                
        StationListAdapter adapter = null;
        
        static enum LookupMethod {
                ByLocation,
                ByName,
                MethodNone
        }
        
        ///////////////////////////////////////////////////////////////////////////////////////////
        //Activity call backs
        
        @SuppressWarnings("unchecked")
        @Override
        public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.main);
                
                
                adapter = new StationListAdapter(this);
                setListAdapter(adapter);
                
                locator = new LocationLookup(this, stationsFetched);
                if (savedInstanceState == null) {
                        startLookup();
                } else {
                        stations = (ArrayList<StationBean>) savedInstanceState.getSerializable("stations");
                        adapter.setStations(stations);
                        location = (GeoPair) savedInstanceState.getSerializable("location");
                }
        }


    @Override 
    public void onSaveInstanceState(Bundle outState) 
    {
        if (dialog != null && dialog.isShowing())
                dialog.dismiss();
        outState.putSerializable("stations", (ArrayList<StationBean>) stations);
        outState.putSerializable("location", location);
    }
        
        
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
                menu.add(0, OPTIONS_RESCAN, 0, "Find nearest stations");
                menu.add(0, OPTIONS_NAMESEARCH, 0, "Search for station");
                menu.add(0, OPTIONS_MAP, 0, "Show station map");
                menu.add(0, OPTIONS_ABOUT, 0, "About");
                return true;
        }

        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
                boolean retval = true;

                
                switch (item.getItemId()) {
                case OPTIONS_RESCAN:
                        startLookup();
                        break;
                case OPTIONS_NAMESEARCH:
                        showDialog(DLG_STATIONNAME);
                        break;
                case OPTIONS_MAP:
                        
                        Intent intent = new Intent(this,StationMapView.class);
                        intent.putExtra("userlocation", location );
                        
                        ArrayList<GeoPair> stationPoints = new ArrayList<GeoPair>();
                        for (StationBean st : stations ) {
                                stationPoints.add( new GeoPair(st.getLatitude(), st.getLongitude(), st.getName()) );
                        }
                        
                        intent.putExtra("stations", stationPoints);
                        
                        startActivity(intent);
                        break;
                case OPTIONS_ABOUT:
                        String ver = this.getResources().getString(R.string.app_version);
                        
                        Location loc = locator.getLocation();
                        StringBuffer message = new StringBuffer();
                        message.append("TrainInfo DK v").append(ver).append("\n");
                        message.append("By Torben Nielsen\n");
                        message.append("\n");
                        message.append("Location info:\n");
                        message.append("-Obtained by: ").append(loc != null ? loc.getProvider() : "-").append("\n");
                        message.append("-Accuracy: ").append(loc != null ? (int)loc.getAccuracy() : "-").append("m\n");

                        MessageBox.showMessage(this, message.toString());
                        break;
                default:
                        retval = super.onOptionsItemSelected(item);
                }
                
                return retval;
        }

        @Override
        protected Dialog onCreateDialog(int id) {
                switch (id) {
                case DLG_PROGRESS:
                        ProgressDialog dlg = new ProgressDialog(this);
                        dlg.setMessage("Wait for location fix");
                        dlg.setCancelable(false);
                        return dlg;                     
                case DLG_STATIONNAME:
                        LayoutInflater factory = LayoutInflater.from(this); 
                        final View rootView = factory.inflate(R.layout.textinput, null);
                        
                        
                        AlertDialog.Builder builder = new AlertDialog.Builder(this);
                        
                        builder.setTitle("Station search");
                        builder.setView(rootView);
                        builder.setCancelable(true);
                        builder.setPositiveButton("Search", new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {
                                        EditText et = (EditText) rootView.findViewById(R.id.EditText);
                                        dialog.dismiss();
                                        if (et.getText().toString().length() >= 2) {
                                                startNameSearch(et.getText().toString());
                                        } else {
                                                MessageBox.showMessage(StationList.this, "Two characters minimum" );
                                        }
                                }
                        });
                        builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {
                                        dialog.dismiss();
                                }
                        });                     
                        return builder.create();
                        
                default:
                        return super.onCreateDialog(id);                
                }
                
        }
        
        
        @Override
        protected void onPrepareDialog(int id, Dialog dialog) {
                super.onPrepareDialog(id, dialog);
                switch (id) {
                case DLG_PROGRESS:
                        this.dialog = (ProgressDialog) dialog;
                        if (!dialogMessage.equals("")) {
                                this.dialog.setMessage(dialogMessage);
                                dialogMessage = "";
                        }
                        break;
                }
        }
        
        @Override
        protected void onListItemClick(ListView l, View v, int position, long id) {
                super.onListItemClick(l, v, position, id);
                                
                StationBean station = stations.get(position);

                double latitude = station.getLatitude();
                double longitude = station.getLongitude();


                Intent intent = new Intent(this, DepartureList.class);
                intent.putExtra("name", station.getName());
                intent.putExtra("distance", station.getDistance());
                intent.putExtra("latitude", latitude);
                intent.putExtra("longitude", longitude);
                intent.putExtra("stationid", station.getId());
                intent.putExtra("address", station.getAddress());
                startActivity(intent);
        }

        /////////////////////////////////////////////////////////////
        //

        public void startLookup() {
                isRunning = true;
                dialogMessage = "Wait for location fix";
                showDialog(DLG_PROGRESS);
                
                locator.locateStations();
                stationsFetched.sendEmptyMessageDelayed(LOCATIONFIXTIMEOUT, 20000);
        }
        
        void startNameSearch(String name) {
                dialogMessage = "Finding stations by name";
                showDialog(DLG_PROGRESS);

                locatorTask = new LocatorTask();
                locatorTask.searchByName(name, locator.getLocation());
                locatorTask.execute();
                
        }


        void startLocatorTask()
        {
                dialogMessage = "Finding nearby stations"; 
                showDialog(DLG_PROGRESS);
                
                locatorTask = new LocatorTask();
                locatorTask.searchByLocation( locator.getLocation() );
                locatorTask.execute();  
        }
        

        String lookupAddress(double latitude, double longitude) {
                
                Geocoder coder = new Geocoder(this, new Locale("da"));
                StringBuilder sb = new StringBuilder();
                Log.i("lookupaddr", "" + latitude + "/" + longitude);
                try {
                        List<Address> addressList = coder.getFromLocation(latitude, longitude, 1);
                        Address addr = addressList.get(0);
                        
                        
                        int max = addr.getMaxAddressLineIndex();
                        for (int i=0; i<max; i++) {
                                if (i>0)
                                        sb.append(", ");
                                
                                sb.append(addr.getAddressLine(i));
                        }
                        
                        
                } catch (Exception e) {
                        Log.e("DepartureList", "geocoder failed", e);
                }
                
                return sb.toString();
        }
        
        
        ////////////////////////////////////////////////////////////////////////////
        // Inner classes

        class StationsFetchedHandler extends Handler {
                @Override
                public void handleMessage(Message msg) {

                        switch (msg.what) {
                        case GOTLOCATION:
                                dismissDialog(DLG_PROGRESS);
                                
                                startLocatorTask();
                                location = GeoPair.fromLocation( locator.getLocation() );
                                
                                break;

                        case NOPROVIDER:
                                dismissDialog(DLG_PROGRESS);
                                MessageBox.showMessage(StationList.this,"No location provider enabled. Plase enable gps.");
                                break;
                        case LOCATIONFIXTIMEOUT:                                
                                if (isRunning) {
                                        locator.stopSearch();
                                        if (locator.hasLocation()) {
                                                stationsFetched.sendEmptyMessage( GOTLOCATION ); 
                                        } else {                                                
                                                dismissDialog(DLG_PROGRESS);
                                                
                                                AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);                                                
                                                builder.setMessage("GPS fix timed out");
                                                builder.setCancelable(true);
                                                builder.setPositiveButton("Retry", new DialogInterface.OnClickListener() {
                                                        public void onClick(DialogInterface dialog, int id) {
                                                                dialog.dismiss();
                                                                startLookup();
                                                                
                                                        }
                                                });
                                                builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                                                        public void onClick(DialogInterface dialog, int id) {
                                                                dialog.dismiss();
                                                        }                                                       
                                                });                                                                                             
                                                builder.show();

                                        }
                                }
                                break;
                        }
                        isRunning = false;
                }
        };

        
        class LocatorTask extends AsyncTask<Void,Void,Void> {
                
                LookupMethod method = LookupMethod.MethodNone;
                boolean success;
                String name;
                Location loc;
                
                public void searchByName(String n, Location l) {
                        
                        method = LookupMethod.ByName;
                        loc = l;
                        name = n;
                }
                
                public void searchByLocation(Location l) {
                        method = LookupMethod.ByLocation;
                        loc = l;
                }
                
                @Override
                protected void onPreExecute() {

                        if (method.equals(LookupMethod.MethodNone))
                                throw new RuntimeException("Method not set");
                        super.onPreExecute();
                }
                
                @Override
                protected Void doInBackground(Void... params) {
                
                        if (method.equals(LookupMethod.ByLocation))
                                success = stationProvider.lookupStations(loc);
                        
                        if (method.equals(LookupMethod.ByName))
                                success = stationProvider.lookupStations(name);
                        
                        Location dummy = new Location("gps");
                        List<StationBean> stations = stationProvider.getStations();
                        
                        for (StationBean station : stations) { 
                                String addr = lookupAddress(station.getLatitude(), station.getLongitude());
                                station.setAddress(addr);
                                
                                if (method.equals(LookupMethod.ByName) ) {
                                        dummy.setLatitude(station.getLatitude());
                                        dummy.setLongitude(station.getLongitude());
                                        station.setDistance( (int)loc.distanceTo(dummy) );
                                }
                        }                                               
                        
                        return null;
                }

                @Override
                protected void onPostExecute(Void result) {
                        super.onPostExecute(result);
                        dialog.dismiss();
                        
                        if (success) {                          
                                if (stationProvider.getStations().size() == 0)
                                        MessageBox.showMessage(StationList.this, "No stations found!"); // this should not be possible !?!
                                stations = stationProvider.getStations();
                                adapter.setStations( stations );                                
                                
                        } else { //communication or parse errors
                                AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);                                                
                                builder.setMessage("Error on finding nearby stations");
                                builder.setCancelable(true);
                                builder.setPositiveButton("Retry", new DialogInterface.OnClickListener() {
                                        public void onClick(DialogInterface dialog, int id) {
                                                dialog.dismiss();
                                                
                                                stationsFetched.post( new Runnable() {
                                                        @Override
                                                        public void run() {
                                                                startLocatorTask();                                                             
                                                        }
                                                });
                                        }
                                });
                                builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                                        public void onClick(DialogInterface dialog, int id) {
                                                dialog.dismiss();
                                        }                                                       
                                });                                                                                             
                                builder.show();                         
                        }
                }
        }
}
1	package dk.thoerup.traininfo;
2
3	import java.util.ArrayList;
4	import java.util.List;
5	import java.util.Locale;
6
7	import android.app.AlertDialog;
8	import android.app.Dialog;
9	import android.app.ListActivity;
10	import android.app.ProgressDialog;
11	import android.content.DialogInterface;
12	import android.content.Intent;
13	import android.location.Address;
14	import android.location.Geocoder;
15	import android.location.Location;
16	import android.os.AsyncTask;
17	import android.os.Bundle;
18	import android.os.Handler;
19	import android.os.Message;
20	import android.util.Log;
21	import android.view.LayoutInflater;
22	import android.view.Menu;
23	import android.view.MenuItem;
24	import android.view.View;
25	import android.widget.EditText;
26	import android.widget.ListView;
27	import dk.thoerup.traininfo.provider.ProviderFactory;
28	import dk.thoerup.traininfo.provider.StationProvider;
29	import dk.thoerup.traininfo.stationmap.GeoPair;
30	import dk.thoerup.traininfo.stationmap.StationMapView;
31	import dk.thoerup.traininfo.util.MessageBox;
32
33	public class StationList extends ListActivity {
34	public static final int GOTLOCATION = 1001;
35	public static final int GOTSTATIONLIST = 1002;
36	public static final int NOPROVIDER = 1003;
37	public static final int LOCATIONFIXTIMEOUT = 1004;
38
39	public static final int OPTIONS_RESCAN = 2001;
40	public static final int OPTIONS_NAMESEARCH = 2002;
41	public static final int OPTIONS_MAP = 2003;
42	public static final int OPTIONS_ABOUT = 2004;
43
44
45	public static final int DLG_PROGRESS = 3001;
46	public static final int DLG_STATIONNAME = 3002;
47
48	/** Called when the activity is first created. */
49	String dialogMessage = "";
50	ProgressDialog dialog;
51	LocationLookup locator = null;
52	LocatorTask locatorTask;
53	StationsFetchedHandler stationsFetched = new StationsFetchedHandler();
54
55	GeoPair location = new GeoPair();
56
57	boolean isRunning = false;
58	List<StationBean> stations = new ArrayList<StationBean>();
59
60	StationProvider stationProvider = ProviderFactory.getStationProvider();
61
62	StationListAdapter adapter = null;
63
64	static enum LookupMethod {
65	ByLocation,
66	ByName,
67	MethodNone
68	}
69
70	///////////////////////////////////////////////////////////////////////////////////////////
71	//Activity call backs
72
73	@SuppressWarnings("unchecked")
74	@Override
75	public void onCreate(Bundle savedInstanceState) {
76	super.onCreate(savedInstanceState);
77	setContentView(R.layout.main);
78
79
80	adapter = new StationListAdapter(this);
81	setListAdapter(adapter);
82
83	locator = new LocationLookup(this, stationsFetched);
84	if (savedInstanceState == null) {
85	startLookup();
86	} else {
87	stations = (ArrayList<StationBean>) savedInstanceState.getSerializable("stations");
88	adapter.setStations(stations);
89	location = (GeoPair) savedInstanceState.getSerializable("location");
90	}
91	}
92
93
94	@Override
95	public void onSaveInstanceState(Bundle outState)
96	{
97	if (dialog != null && dialog.isShowing())
98	dialog.dismiss();
99	outState.putSerializable("stations", (ArrayList<StationBean>) stations);
100	outState.putSerializable("location", location);
101	}
102
103
104
105	@Override
106	public boolean onCreateOptionsMenu(Menu menu) {
107	menu.add(0, OPTIONS_RESCAN, 0, "Find nearest stations");
108	menu.add(0, OPTIONS_NAMESEARCH, 0, "Search for station");
109	menu.add(0, OPTIONS_MAP, 0, "Show station map");
110	menu.add(0, OPTIONS_ABOUT, 0, "About");
111	return true;
112	}
113
114	@Override
115	public boolean onOptionsItemSelected(MenuItem item) {
116	boolean retval = true;
117
118
119	switch (item.getItemId()) {
120	case OPTIONS_RESCAN:
121	startLookup();
122	break;
123	case OPTIONS_NAMESEARCH:
124	showDialog(DLG_STATIONNAME);
125	break;
126	case OPTIONS_MAP:
127
128	Intent intent = new Intent(this,StationMapView.class);
129	intent.putExtra("userlocation", location );
130
131	ArrayList<GeoPair> stationPoints = new ArrayList<GeoPair>();
132	for (StationBean st : stations ) {
133	stationPoints.add( new GeoPair(st.getLatitude(), st.getLongitude(), st.getName()) );
134	}
135
136	intent.putExtra("stations", stationPoints);
137
138	startActivity(intent);
139	break;
140	case OPTIONS_ABOUT:
141	String ver = this.getResources().getString(R.string.app_version);
142
143	Location loc = locator.getLocation();
144	StringBuffer message = new StringBuffer();
145	message.append("TrainInfo DK v").append(ver).append("\n");
146	message.append("By Torben Nielsen\n");
147	message.append("\n");
148	message.append("Location info:\n");
149	message.append("-Obtained by: ").append(loc != null ? loc.getProvider() : "-").append("\n");
150	message.append("-Accuracy: ").append(loc != null ? (int)loc.getAccuracy() : "-").append("m\n");
151
152	MessageBox.showMessage(this, message.toString());
153	break;
154	default:
155	retval = super.onOptionsItemSelected(item);
156	}
157
158	return retval;
159	}
160
161	@Override
162	protected Dialog onCreateDialog(int id) {
163	switch (id) {
164	case DLG_PROGRESS:
165	ProgressDialog dlg = new ProgressDialog(this);
166	dlg.setMessage("Wait for location fix");
167	dlg.setCancelable(false);
168	return dlg;
169	case DLG_STATIONNAME:
170	LayoutInflater factory = LayoutInflater.from(this);
171	final View rootView = factory.inflate(R.layout.textinput, null);
172
173
174	AlertDialog.Builder builder = new AlertDialog.Builder(this);
175
176	builder.setTitle("Station search");
177	builder.setView(rootView);
178	builder.setCancelable(true);
179	builder.setPositiveButton("Search", new DialogInterface.OnClickListener() {
180	public void onClick(DialogInterface dialog, int which) {
181	EditText et = (EditText) rootView.findViewById(R.id.EditText);
182	dialog.dismiss();
183	if (et.getText().toString().length() >= 2) {
184	startNameSearch(et.getText().toString());
185	} else {
186	MessageBox.showMessage(StationList.this, "Two characters minimum" );
187	}
188	}
189	});
190	builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
191	public void onClick(DialogInterface dialog, int which) {
192	dialog.dismiss();
193	}
194	});
195	return builder.create();
196
197	default:
198	return super.onCreateDialog(id);
199	}
200
201	}
202
203
204	@Override
205	protected void onPrepareDialog(int id, Dialog dialog) {
206	super.onPrepareDialog(id, dialog);
207	switch (id) {
208	case DLG_PROGRESS:
209	this.dialog = (ProgressDialog) dialog;
210	if (!dialogMessage.equals("")) {
211	this.dialog.setMessage(dialogMessage);
212	dialogMessage = "";
213	}
214	break;
215	}
216	}
217
218	@Override
219	protected void onListItemClick(ListView l, View v, int position, long id) {
220	super.onListItemClick(l, v, position, id);
221
222	StationBean station = stations.get(position);
223
224	double latitude = station.getLatitude();
225	double longitude = station.getLongitude();
226
227
228
229	Intent intent = new Intent(this, DepartureList.class);
230	intent.putExtra("name", station.getName());
231	intent.putExtra("distance", station.getDistance());
232	intent.putExtra("latitude", latitude);
233	intent.putExtra("longitude", longitude);
234	intent.putExtra("stationid", station.getId());
235	intent.putExtra("address", station.getAddress());
236	startActivity(intent);
237	}
238
239	/////////////////////////////////////////////////////////////
240	//
241
242	public void startLookup() {
243	isRunning = true;
244	dialogMessage = "Wait for location fix";
245	showDialog(DLG_PROGRESS);
246
247	locator.locateStations();
248	stationsFetched.sendEmptyMessageDelayed(LOCATIONFIXTIMEOUT, 20000);
249	}
250
251	void startNameSearch(String name) {
252	dialogMessage = "Finding stations by name";
253	showDialog(DLG_PROGRESS);
254
255	locatorTask = new LocatorTask();
256	locatorTask.searchByName(name, locator.getLocation());
257	locatorTask.execute();
258
259	}
260
261
262
263	void startLocatorTask()
264	{
265	dialogMessage = "Finding nearby stations";
266	showDialog(DLG_PROGRESS);
267
268	locatorTask = new LocatorTask();
269	locatorTask.searchByLocation( locator.getLocation() );
270	locatorTask.execute();
271	}
272
273
274	String lookupAddress(double latitude, double longitude) {
275
276	Geocoder coder = new Geocoder(this, new Locale("da"));
277	StringBuilder sb = new StringBuilder();
278	Log.i("lookupaddr", "" + latitude + "/" + longitude);
279	try {
280	List<Address> addressList = coder.getFromLocation(latitude, longitude, 1);
281	Address addr = addressList.get(0);
282
283
284	int max = addr.getMaxAddressLineIndex();
285	for (int i=0; i<max; i++) {
286	if (i>0)
287	sb.append(", ");
288
289	sb.append(addr.getAddressLine(i));
290	}
291
292
293	} catch (Exception e) {
294	Log.e("DepartureList", "geocoder failed", e);
295	}
296
297	return sb.toString();
298	}
299
300
301	////////////////////////////////////////////////////////////////////////////
302	// Inner classes
303
304	class StationsFetchedHandler extends Handler {
305	@Override
306	public void handleMessage(Message msg) {
307
308	switch (msg.what) {
309	case GOTLOCATION:
310	dismissDialog(DLG_PROGRESS);
311
312	startLocatorTask();
313	location = GeoPair.fromLocation( locator.getLocation() );
314
315	break;
316
317	case NOPROVIDER:
318	dismissDialog(DLG_PROGRESS);
319	MessageBox.showMessage(StationList.this,"No location provider enabled. Plase enable gps.");
320	break;
321	case LOCATIONFIXTIMEOUT:
322	if (isRunning) {
323	locator.stopSearch();
324	if (locator.hasLocation()) {
325	stationsFetched.sendEmptyMessage( GOTLOCATION );
326	} else {
327	dismissDialog(DLG_PROGRESS);
328
329	AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);
330	builder.setMessage("GPS fix timed out");
331	builder.setCancelable(true);
332	builder.setPositiveButton("Retry", new DialogInterface.OnClickListener() {
333	public void onClick(DialogInterface dialog, int id) {
334	dialog.dismiss();
335	startLookup();
336
337	}
338	});
339	builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
340	public void onClick(DialogInterface dialog, int id) {
341	dialog.dismiss();
342	}
343	});
344	builder.show();
345
346	}
347	}
348	break;
349	}
350	isRunning = false;
351	}
352	};
353
354
355	class LocatorTask extends AsyncTask<Void,Void,Void> {
356
357	LookupMethod method = LookupMethod.MethodNone;
358	boolean success;
359	String name;
360	Location loc;
361
362	public void searchByName(String n, Location l) {
363
364	method = LookupMethod.ByName;
365	loc = l;
366	name = n;
367	}
368
369	public void searchByLocation(Location l) {
370	method = LookupMethod.ByLocation;
371	loc = l;
372	}
373
374	@Override
375	protected void onPreExecute() {
376
377	if (method.equals(LookupMethod.MethodNone))
378	throw new RuntimeException("Method not set");
379	super.onPreExecute();
380	}
381
382	@Override
383	protected Void doInBackground(Void... params) {
384
385	if (method.equals(LookupMethod.ByLocation))
386	success = stationProvider.lookupStations(loc);
387
388	if (method.equals(LookupMethod.ByName))
389	success = stationProvider.lookupStations(name);
390
391	Location dummy = new Location("gps");
392	List<StationBean> stations = stationProvider.getStations();
393
394	for (StationBean station : stations) {
395	String addr = lookupAddress(station.getLatitude(), station.getLongitude());
396	station.setAddress(addr);
397
398	if (method.equals(LookupMethod.ByName) ) {
399	dummy.setLatitude(station.getLatitude());
400	dummy.setLongitude(station.getLongitude());
401	station.setDistance( (int)loc.distanceTo(dummy) );
402	}
403	}
404
405	return null;
406	}
407
408	@Override
409	protected void onPostExecute(Void result) {
410	super.onPostExecute(result);
411	dialog.dismiss();
412
413	if (success) {
414	if (stationProvider.getStations().size() == 0)
415	MessageBox.showMessage(StationList.this, "No stations found!"); // this should not be possible !?!
416	stations = stationProvider.getStations();
417	adapter.setStations( stations );
418
419	} else { //communication or parse errors
420	AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);
421	builder.setMessage("Error on finding nearby stations");
422	builder.setCancelable(true);
423	builder.setPositiveButton("Retry", new DialogInterface.OnClickListener() {
424	public void onClick(DialogInterface dialog, int id) {
425	dialog.dismiss();
426
427	stationsFetched.post( new Runnable() {
428	@Override
429	public void run() {
430	startLocatorTask();
431	}
432	});
433	}
434	});
435	builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
436	public void onClick(DialogInterface dialog, int id) {
437	dialog.dismiss();
438	}
439	});
440	builder.show();
441	}
442	}
443	}
444	}