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;
        
        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);
                }
        }
        
    @Override 
    public void onSaveInstanceState(Bundle outState) 
    {
        if (dialog != null && dialog.isShowing())
                dialog.dismiss();
        outState.putSerializable("stations", (ArrayList<StationBean>) stations);
    }
        
        
        @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", GeoPair.fromLocation(locator.getLocation()) );
                        
                        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;
                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();
                                
                                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	torben	237	package dk.thoerup.traininfo;
2
3	torben	258	import java.util.ArrayList;
4			import java.util.List;
5	torben	294	import java.util.Locale;
6	torben	258
7	torben	336	import android.app.AlertDialog;
8	torben	237	import android.app.Dialog;
9			import android.app.ListActivity;
10			import android.app.ProgressDialog;
11	torben	336	import android.content.DialogInterface;
12	torben	237	import android.content.Intent;
13	torben	294	import android.location.Address;
14			import android.location.Geocoder;
15	torben	319	import android.location.Location;
16	torben	241	import android.os.AsyncTask;
17	torben	237	import android.os.Bundle;
18			import android.os.Handler;
19			import android.os.Message;
20	torben	294	import android.util.Log;
21	torben	368	import android.view.Menu;
22			import android.view.MenuItem;
23	torben	237	import android.view.View;
24			import android.widget.ListView;
25	torben	368
26
27	torben	319	import dk.thoerup.traininfo.provider.ProviderFactory;
28			import dk.thoerup.traininfo.provider.StationProvider;
29	torben	368	import dk.thoerup.traininfo.stationmap.GeoPair;
30			import dk.thoerup.traininfo.stationmap.StationMapView;
31	torben	245	import dk.thoerup.traininfo.util.MessageBox;
32	torben	237
33	torben	336	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	torben	368
39			public static final int OPTIONS_MAP = 2001;
40			public static final int OPTIONS_ABOUT = 2002;
41	torben	336
42	torben	237
43	torben	336	public static final int DLG_PROGRESS = 1001;
44	torben	237
45			/** Called when the activity is first created. */
46	torben	336	String dialogMessage = "";
47	torben	237	ProgressDialog dialog;
48	torben	319	LocationLookup locator = null;
49	torben	336	LocatorTask locatorTask;
50	torben	237
51	torben	258	boolean isRunning = false;
52			List<StationBean> stations = new ArrayList<StationBean>();
53
54	torben	319	StationProvider stationProvider = ProviderFactory.getStationProvider();
55	torben	258
56	torben	319
57	torben	237	StationListAdapter adapter = null;
58	torben	258	@SuppressWarnings("unchecked")
59	torben	237	@Override
60			public void onCreate(Bundle savedInstanceState) {
61			super.onCreate(savedInstanceState);
62			setContentView(R.layout.main);
63
64	torben	241
65	torben	237	adapter = new StationListAdapter(this);
66			setListAdapter(adapter);
67
68	torben	319	locator = new LocationLookup(this, stationsFetched);
69	torben	258	if (savedInstanceState == null) {
70			startLookup();
71			} else {
72			stations = (ArrayList<StationBean>) savedInstanceState.getSerializable("stations");
73	torben	260	adapter.setStations(stations);
74	torben	258	}
75	torben	237	}
76
77	torben	243	@Override
78			public void onSaveInstanceState(Bundle outState)
79			{
80	torben	258	if (dialog != null && dialog.isShowing())
81	torben	243	dialog.dismiss();
82	torben	258	outState.putSerializable("stations", (ArrayList<StationBean>) stations);
83	torben	243	}
84	torben	237
85	torben	243
86	torben	237
87			@Override
88	torben	368	public boolean onCreateOptionsMenu(Menu menu) {
89			menu.add(0, OPTIONS_MAP, 0, "Show station map");
90			menu.add(0, OPTIONS_ABOUT, 0, "About");
91
92			return true;
93			}
94
95			@Override
96			public boolean onOptionsItemSelected(MenuItem item) {
97			boolean retval;
98
99			switch (item.getItemId()) {
100			case OPTIONS_MAP:
101
102			Intent intent = new Intent(this,StationMapView.class);
103			intent.putExtra("userlocation", GeoPair.fromLocation(locator.getLocation()) );
104
105			ArrayList<GeoPair> stationPoints = new ArrayList<GeoPair>();
106			for (StationBean st : stations ) {
107	torben	369	stationPoints.add( new GeoPair(st.getLatitude(), st.getLongitude(), st.getName()) );
108	torben	368	}
109
110			intent.putExtra("stations", stationPoints);
111
112			startActivity(intent);
113			retval = true;
114			break;
115			default:
116			retval = super.onOptionsItemSelected(item);
117			}
118
119			return retval;
120			}
121
122			@Override
123	torben	237	protected Dialog onCreateDialog(int id) {
124			switch (id) {
125			case DLG_PROGRESS:
126			ProgressDialog dlg = new ProgressDialog(this);
127			dlg.setMessage("Wait for location fix");
128			dlg.setCancelable(false);
129	torben	336	return dlg;
130	torben	237	default:
131			return super.onCreateDialog(id);
132			}
133
134			}
135
136
137
138			@Override
139			protected void onPrepareDialog(int id, Dialog dialog) {
140			super.onPrepareDialog(id, dialog);
141			switch (id) {
142			case DLG_PROGRESS:
143			this.dialog = (ProgressDialog) dialog;
144	torben	336	if (!dialogMessage.equals("")) {
145			this.dialog.setMessage(dialogMessage);
146			dialogMessage = "";
147			}
148	torben	237	break;
149			}
150			}
151
152			public void startLookup() {
153			isRunning = true;
154			showDialog(DLG_PROGRESS);
155
156			locator.locateStations();
157	torben	336	stationsFetched.sendEmptyMessageDelayed(LOCATIONFIXTIMEOUT, 20000);
158	torben	237	}
159
160
161			Handler stationsFetched = new Handler() {
162			@Override
163			public void handleMessage(Message msg) {
164	torben	336
165	torben	237	switch (msg.what) {
166			case GOTLOCATION:
167	torben	336	dismissDialog(DLG_PROGRESS);
168
169			startLocatorTask();
170
171	torben	237	break;
172	torben	319
173	torben	237	case NOPROVIDER:
174	torben	336	dismissDialog(DLG_PROGRESS);
175			MessageBox.showMessage(StationList.this,"No location provider enabled. Plase enable gps.");
176	torben	237	break;
177	torben	336	case LOCATIONFIXTIMEOUT:
178	torben	237	if (isRunning) {
179	torben	336	locator.stopSearch();
180	torben	285	if (locator.hasLocation()) {
181	torben	336	stationsFetched.sendEmptyMessage( GOTLOCATION );
182			} else {
183			dismissDialog(DLG_PROGRESS);
184
185			AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);
186			builder.setMessage("GPS fix timed out");
187			builder.setCancelable(true);
188			builder.setPositiveButton("Retry", new DialogInterface.OnClickListener() {
189			public void onClick(DialogInterface dialog, int id) {
190			dialog.dismiss();
191			startLookup();
192
193			}
194			});
195			builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
196			public void onClick(DialogInterface dialog, int id) {
197			dialog.dismiss();
198			}
199			});
200			builder.show();
201
202	torben	285	}
203	torben	237	}
204			break;
205			}
206			isRunning = false;
207			}
208			};
209
210	torben	336	void startLocatorTask()
211			{
212			dialogMessage = "Finding nearby stations";
213			showDialog(DLG_PROGRESS);
214
215			locatorTask = new LocatorTask();
216			locatorTask.execute();
217			}
218	torben	237
219			@Override
220			protected void onListItemClick(ListView l, View v, int position, long id) {
221			super.onListItemClick(l, v, position, id);
222	torben	294
223	torben	258	StationBean station = stations.get(position);
224	torben	294
225			double latitude = station.getLatitude();
226			double longitude = station.getLongitude();
227
228
229	torben	237
230			Intent intent = new Intent(this, DepartureList.class);
231			intent.putExtra("name", station.getName());
232			intent.putExtra("distance", station.getDistance());
233	torben	294	intent.putExtra("latitude", latitude);
234			intent.putExtra("longitude", longitude);
235	torben	310	intent.putExtra("stationid", station.getId());
236	torben	317	intent.putExtra("address", station.getAddress());
237	torben	237	startActivity(intent);
238			}
239
240	torben	317	String lookupAddress(double latitude, double longitude) {
241
242			Geocoder coder = new Geocoder(this, new Locale("da"));
243			StringBuilder sb = new StringBuilder();
244			Log.i("lookupaddr", "" + latitude + "/" + longitude);
245			try {
246			List<Address> addressList = coder.getFromLocation(latitude, longitude, 1);
247			Address addr = addressList.get(0);
248
249
250			int max = addr.getMaxAddressLineIndex();
251			for (int i=0; i<max; i++) {
252			if (i>0)
253			sb.append(", ");
254
255			sb.append(addr.getAddressLine(i));
256			}
257
258
259			} catch (Exception e) {
260			Log.e("DepartureList", "geocoder failed", e);
261			}
262
263			return sb.toString();
264			}
265	torben	241
266			class LocatorTask extends AsyncTask<Void,Void,Void> {
267	torben	319	boolean success;
268	torben	241	@Override
269			protected void onPreExecute() {
270	torben	258
271	torben	241	super.onPreExecute();
272			}
273
274			@Override
275			protected Void doInBackground(Void... params) {
276	torben	319	Location loc = locator.getLocation();
277			success = stationProvider.lookupStations(loc);
278	torben	258
279	torben	319
280			List<StationBean> stations = stationProvider.getStations();
281	torben	317	for (StationBean station : stations) {
282			String addr = lookupAddress(station.getLatitude(), station.getLongitude());
283			station.setAddress(addr);
284			}
285
286	torben	241	return null;
287			}
288
289			@Override
290			protected void onPostExecute(Void result) {
291			super.onPostExecute(result);
292	torben	319	dialog.dismiss();
293
294			if (success) {
295			if (stationProvider.getStations().size() == 0)
296	torben	336	MessageBox.showMessage(StationList.this, "No stations found!"); // this should not be possible !?!
297	torben	319	stations = stationProvider.getStations();
298			adapter.setStations( stations );
299
300			} else { //communication or parse errors
301	torben	336	AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);
302			builder.setMessage("Error on finding nearby stations");
303			builder.setCancelable(true);
304			builder.setPositiveButton("Retry", new DialogInterface.OnClickListener() {
305			public void onClick(DialogInterface dialog, int id) {
306			dialog.dismiss();
307
308			stationsFetched.post( new Runnable() {
309			@Override
310			public void run() {
311			startLocatorTask();
312			}
313			});
314			}
315			});
316			builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
317			public void onClick(DialogInterface dialog, int id) {
318			dialog.dismiss();
319			}
320			});
321			builder.show();
322	torben	319	}
323	torben	241	}
324			}
325	torben	237	}