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.Menu;
import android.view.MenuItem;
import android.view.View;
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_MAP = 2001;
        public static final int OPTIONS_ABOUT = 2002;

        
        public static final int DLG_PROGRESS = 1001;
        
        /** Called when the activity is first created. */
        String dialogMessage = "";
        ProgressDialog dialog;
        LocationLookup locator = null;
        LocatorTask locatorTask;
        
        GeoPair location = new GeoPair();
        
        boolean isRunning = false;
        List<StationBean> stations = new ArrayList<StationBean>();
        
        StationProvider stationProvider = ProviderFactory.getStationProvider();
        
        
        StationListAdapter adapter = null;
        @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_MAP, 0, "Show station map");
                menu.add(0, OPTIONS_ABOUT, 0, "About");
                
                return true;
        }

        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
                boolean retval;
                
                switch (item.getItemId()) {
                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);
                        retval = true;
                        break;
                case OPTIONS_ABOUT:
                        String ver = this.getResources().getString(R.string.app_version);
                        
                        StringBuffer message = new StringBuffer();
                        message.append("TrainInfo DK v").append(ver).append("\n");
                        message.append("By Torben Nielsen\n");

                        MessageBox.showMessage(this, message.toString());
                        retval = true;
                        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;                     
                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;
                }
        }

        public void startLookup() {
                isRunning = true;
                showDialog(DLG_PROGRESS);
                
                locator.locateStations();
                stationsFetched.sendEmptyMessageDelayed(LOCATIONFIXTIMEOUT, 20000);
        }


        Handler stationsFetched = new 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;
                }
        };
        
        void startLocatorTask()
        {
                dialogMessage = "Finding nearby stations"; 
                showDialog(DLG_PROGRESS);
                
                locatorTask = new LocatorTask();
                locatorTask.execute();  
        }
        
        @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);
        }

        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();
        }
        
        class LocatorTask extends AsyncTask<Void,Void,Void> {
                boolean success;
                @Override
                protected void onPreExecute() {

                        super.onPreExecute();
                }
                
                @Override
                protected Void doInBackground(Void... params) {
                        Location loc = locator.getLocation();
                        success = stationProvider.lookupStations(loc);
                        
                        
                        List<StationBean> stations = stationProvider.getStations();
                        for (StationBean station : stations) {
                                String addr = lookupAddress(station.getLatitude(), station.getLongitude());
                                station.setAddress(addr);
                        }
                        
                        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.Menu;
22	import android.view.MenuItem;
23	import android.view.View;
24	import android.widget.ListView;
25
26
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_MAP = 2001;
40	public static final int OPTIONS_ABOUT = 2002;
41
42
43	public static final int DLG_PROGRESS = 1001;
44
45	/** Called when the activity is first created. */
46	String dialogMessage = "";
47	ProgressDialog dialog;
48	LocationLookup locator = null;
49	LocatorTask locatorTask;
50
51	GeoPair location = new GeoPair();
52
53	boolean isRunning = false;
54	List<StationBean> stations = new ArrayList<StationBean>();
55
56	StationProvider stationProvider = ProviderFactory.getStationProvider();
57
58
59	StationListAdapter adapter = null;
60	@SuppressWarnings("unchecked")
61	@Override
62	public void onCreate(Bundle savedInstanceState) {
63	super.onCreate(savedInstanceState);
64	setContentView(R.layout.main);
65
66
67	adapter = new StationListAdapter(this);
68	setListAdapter(adapter);
69
70	locator = new LocationLookup(this, stationsFetched);
71	if (savedInstanceState == null) {
72	startLookup();
73	} else {
74	stations = (ArrayList<StationBean>) savedInstanceState.getSerializable("stations");
75	adapter.setStations(stations);
76	location = (GeoPair) savedInstanceState.getSerializable("location");
77	}
78	}
79
80
81	@Override
82	public void onSaveInstanceState(Bundle outState)
83	{
84	if (dialog != null && dialog.isShowing())
85	dialog.dismiss();
86	outState.putSerializable("stations", (ArrayList<StationBean>) stations);
87	outState.putSerializable("location", location);
88	}
89
90
91
92	@Override
93	public boolean onCreateOptionsMenu(Menu menu) {
94	menu.add(0, OPTIONS_MAP, 0, "Show station map");
95	menu.add(0, OPTIONS_ABOUT, 0, "About");
96
97	return true;
98	}
99
100	@Override
101	public boolean onOptionsItemSelected(MenuItem item) {
102	boolean retval;
103
104	switch (item.getItemId()) {
105	case OPTIONS_MAP:
106
107	Intent intent = new Intent(this,StationMapView.class);
108	intent.putExtra("userlocation", location );
109
110	ArrayList<GeoPair> stationPoints = new ArrayList<GeoPair>();
111	for (StationBean st : stations ) {
112	stationPoints.add( new GeoPair(st.getLatitude(), st.getLongitude(), st.getName()) );
113	}
114
115	intent.putExtra("stations", stationPoints);
116
117	startActivity(intent);
118	retval = true;
119	break;
120	case OPTIONS_ABOUT:
121	String ver = this.getResources().getString(R.string.app_version);
122
123	StringBuffer message = new StringBuffer();
124	message.append("TrainInfo DK v").append(ver).append("\n");
125	message.append("By Torben Nielsen\n");
126
127	MessageBox.showMessage(this, message.toString());
128	retval = true;
129	break;
130	default:
131	retval = super.onOptionsItemSelected(item);
132	}
133
134	return retval;
135	}
136
137	@Override
138	protected Dialog onCreateDialog(int id) {
139	switch (id) {
140	case DLG_PROGRESS:
141	ProgressDialog dlg = new ProgressDialog(this);
142	dlg.setMessage("Wait for location fix");
143	dlg.setCancelable(false);
144	return dlg;
145	default:
146	return super.onCreateDialog(id);
147	}
148
149	}
150
151
152
153	@Override
154	protected void onPrepareDialog(int id, Dialog dialog) {
155	super.onPrepareDialog(id, dialog);
156	switch (id) {
157	case DLG_PROGRESS:
158	this.dialog = (ProgressDialog) dialog;
159	if (!dialogMessage.equals("")) {
160	this.dialog.setMessage(dialogMessage);
161	dialogMessage = "";
162	}
163	break;
164	}
165	}
166
167	public void startLookup() {
168	isRunning = true;
169	showDialog(DLG_PROGRESS);
170
171	locator.locateStations();
172	stationsFetched.sendEmptyMessageDelayed(LOCATIONFIXTIMEOUT, 20000);
173	}
174
175
176	Handler stationsFetched = new Handler() {
177	@Override
178	public void handleMessage(Message msg) {
179
180	switch (msg.what) {
181	case GOTLOCATION:
182	dismissDialog(DLG_PROGRESS);
183
184	startLocatorTask();
185	location = GeoPair.fromLocation( locator.getLocation() );
186
187	break;
188
189	case NOPROVIDER:
190	dismissDialog(DLG_PROGRESS);
191	MessageBox.showMessage(StationList.this,"No location provider enabled. Plase enable gps.");
192	break;
193	case LOCATIONFIXTIMEOUT:
194	if (isRunning) {
195	locator.stopSearch();
196	if (locator.hasLocation()) {
197	stationsFetched.sendEmptyMessage( GOTLOCATION );
198	} else {
199	dismissDialog(DLG_PROGRESS);
200
201	AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);
202	builder.setMessage("GPS fix timed out");
203	builder.setCancelable(true);
204	builder.setPositiveButton("Retry", new DialogInterface.OnClickListener() {
205	public void onClick(DialogInterface dialog, int id) {
206	dialog.dismiss();
207	startLookup();
208
209	}
210	});
211	builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
212	public void onClick(DialogInterface dialog, int id) {
213	dialog.dismiss();
214	}
215	});
216	builder.show();
217
218	}
219	}
220	break;
221	}
222	isRunning = false;
223	}
224	};
225
226	void startLocatorTask()
227	{
228	dialogMessage = "Finding nearby stations";
229	showDialog(DLG_PROGRESS);
230
231	locatorTask = new LocatorTask();
232	locatorTask.execute();
233	}
234
235	@Override
236	protected void onListItemClick(ListView l, View v, int position, long id) {
237	super.onListItemClick(l, v, position, id);
238
239	StationBean station = stations.get(position);
240
241	double latitude = station.getLatitude();
242	double longitude = station.getLongitude();
243
244
245
246	Intent intent = new Intent(this, DepartureList.class);
247	intent.putExtra("name", station.getName());
248	intent.putExtra("distance", station.getDistance());
249	intent.putExtra("latitude", latitude);
250	intent.putExtra("longitude", longitude);
251	intent.putExtra("stationid", station.getId());
252	intent.putExtra("address", station.getAddress());
253	startActivity(intent);
254	}
255
256	String lookupAddress(double latitude, double longitude) {
257
258	Geocoder coder = new Geocoder(this, new Locale("da"));
259	StringBuilder sb = new StringBuilder();
260	Log.i("lookupaddr", "" + latitude + "/" + longitude);
261	try {
262	List<Address> addressList = coder.getFromLocation(latitude, longitude, 1);
263	Address addr = addressList.get(0);
264
265
266	int max = addr.getMaxAddressLineIndex();
267	for (int i=0; i<max; i++) {
268	if (i>0)
269	sb.append(", ");
270
271	sb.append(addr.getAddressLine(i));
272	}
273
274
275	} catch (Exception e) {
276	Log.e("DepartureList", "geocoder failed", e);
277	}
278
279	return sb.toString();
280	}
281
282	class LocatorTask extends AsyncTask<Void,Void,Void> {
283	boolean success;
284	@Override
285	protected void onPreExecute() {
286
287	super.onPreExecute();
288	}
289
290	@Override
291	protected Void doInBackground(Void... params) {
292	Location loc = locator.getLocation();
293	success = stationProvider.lookupStations(loc);
294
295
296	List<StationBean> stations = stationProvider.getStations();
297	for (StationBean station : stations) {
298	String addr = lookupAddress(station.getLatitude(), station.getLongitude());
299	station.setAddress(addr);
300	}
301
302	return null;
303	}
304
305	@Override
306	protected void onPostExecute(Void result) {
307	super.onPostExecute(result);
308	dialog.dismiss();
309
310	if (success) {
311	if (stationProvider.getStations().size() == 0)
312	MessageBox.showMessage(StationList.this, "No stations found!"); // this should not be possible !?!
313	stations = stationProvider.getStations();
314	adapter.setStations( stations );
315
316	} else { //communication or parse errors
317	AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);
318	builder.setMessage("Error on finding nearby stations");
319	builder.setCancelable(true);
320	builder.setPositiveButton("Retry", new DialogInterface.OnClickListener() {
321	public void onClick(DialogInterface dialog, int id) {
322	dialog.dismiss();
323
324	stationsFetched.post( new Runnable() {
325	@Override
326	public void run() {
327	startLocatorTask();
328	}
329	});
330	}
331	});
332	builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
333	public void onClick(DialogInterface dialog, int id) {
334	dialog.dismiss();
335	}
336	});
337	builder.show();
338	}
339	}
340	}
341	}