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	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	374	GeoPair location = new GeoPair();
52
53	torben	258	boolean isRunning = false;
54			List<StationBean> stations = new ArrayList<StationBean>();
55
56	torben	319	StationProvider stationProvider = ProviderFactory.getStationProvider();
57	torben	258
58	torben	319
59	torben	237	StationListAdapter adapter = null;
60	torben	258	@SuppressWarnings("unchecked")
61	torben	237	@Override
62			public void onCreate(Bundle savedInstanceState) {
63			super.onCreate(savedInstanceState);
64			setContentView(R.layout.main);
65
66	torben	241
67	torben	237	adapter = new StationListAdapter(this);
68			setListAdapter(adapter);
69
70	torben	319	locator = new LocationLookup(this, stationsFetched);
71	torben	258	if (savedInstanceState == null) {
72			startLookup();
73			} else {
74			stations = (ArrayList<StationBean>) savedInstanceState.getSerializable("stations");
75	torben	260	adapter.setStations(stations);
76	torben	374	location = (GeoPair) savedInstanceState.getSerializable("location");
77	torben	258	}
78	torben	237	}
79	torben	371
80
81	torben	243	@Override
82			public void onSaveInstanceState(Bundle outState)
83			{
84	torben	258	if (dialog != null && dialog.isShowing())
85	torben	243	dialog.dismiss();
86	torben	258	outState.putSerializable("stations", (ArrayList<StationBean>) stations);
87	torben	374	outState.putSerializable("location", location);
88	torben	243	}
89	torben	237
90	torben	243
91	torben	237
92			@Override
93	torben	368	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	torben	374	intent.putExtra("userlocation", location );
109	torben	368
110			ArrayList<GeoPair> stationPoints = new ArrayList<GeoPair>();
111			for (StationBean st : stations ) {
112	torben	369	stationPoints.add( new GeoPair(st.getLatitude(), st.getLongitude(), st.getName()) );
113	torben	368	}
114
115			intent.putExtra("stations", stationPoints);
116
117			startActivity(intent);
118			retval = true;
119			break;
120	torben	371	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	torben	368	default:
131			retval = super.onOptionsItemSelected(item);
132			}
133
134			return retval;
135			}
136
137			@Override
138	torben	237	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	torben	336	return dlg;
145	torben	237	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	torben	336	if (!dialogMessage.equals("")) {
160			this.dialog.setMessage(dialogMessage);
161			dialogMessage = "";
162			}
163	torben	237	break;
164			}
165			}
166
167			public void startLookup() {
168			isRunning = true;
169			showDialog(DLG_PROGRESS);
170
171			locator.locateStations();
172	torben	336	stationsFetched.sendEmptyMessageDelayed(LOCATIONFIXTIMEOUT, 20000);
173	torben	237	}
174
175
176			Handler stationsFetched = new Handler() {
177			@Override
178			public void handleMessage(Message msg) {
179	torben	336
180	torben	237	switch (msg.what) {
181			case GOTLOCATION:
182	torben	336	dismissDialog(DLG_PROGRESS);
183
184			startLocatorTask();
185	torben	374	location = GeoPair.fromLocation( locator.getLocation() );
186	torben	336
187	torben	237	break;
188	torben	319
189	torben	237	case NOPROVIDER:
190	torben	336	dismissDialog(DLG_PROGRESS);
191			MessageBox.showMessage(StationList.this,"No location provider enabled. Plase enable gps.");
192	torben	237	break;
193	torben	336	case LOCATIONFIXTIMEOUT:
194	torben	237	if (isRunning) {
195	torben	336	locator.stopSearch();
196	torben	285	if (locator.hasLocation()) {
197	torben	336	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	torben	285	}
219	torben	237	}
220			break;
221			}
222			isRunning = false;
223			}
224			};
225
226	torben	336	void startLocatorTask()
227			{
228			dialogMessage = "Finding nearby stations";
229			showDialog(DLG_PROGRESS);
230
231			locatorTask = new LocatorTask();
232			locatorTask.execute();
233			}
234	torben	237
235			@Override
236			protected void onListItemClick(ListView l, View v, int position, long id) {
237			super.onListItemClick(l, v, position, id);
238	torben	294
239	torben	258	StationBean station = stations.get(position);
240	torben	294
241			double latitude = station.getLatitude();
242			double longitude = station.getLongitude();
243
244
245	torben	237
246			Intent intent = new Intent(this, DepartureList.class);
247			intent.putExtra("name", station.getName());
248			intent.putExtra("distance", station.getDistance());
249	torben	294	intent.putExtra("latitude", latitude);
250			intent.putExtra("longitude", longitude);
251	torben	310	intent.putExtra("stationid", station.getId());
252	torben	317	intent.putExtra("address", station.getAddress());
253	torben	237	startActivity(intent);
254			}
255
256	torben	317	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	torben	241
282			class LocatorTask extends AsyncTask<Void,Void,Void> {
283	torben	319	boolean success;
284	torben	241	@Override
285			protected void onPreExecute() {
286	torben	258
287	torben	241	super.onPreExecute();
288			}
289
290			@Override
291			protected Void doInBackground(Void... params) {
292	torben	319	Location loc = locator.getLocation();
293			success = stationProvider.lookupStations(loc);
294	torben	258
295	torben	319
296			List<StationBean> stations = stationProvider.getStations();
297	torben	317	for (StationBean station : stations) {
298			String addr = lookupAddress(station.getLatitude(), station.getLongitude());
299			station.setAddress(addr);
300			}
301
302	torben	241	return null;
303			}
304
305			@Override
306			protected void onPostExecute(Void result) {
307			super.onPostExecute(result);
308	torben	319	dialog.dismiss();
309
310			if (success) {
311			if (stationProvider.getStations().size() == 0)
312	torben	336	MessageBox.showMessage(StationList.this, "No stations found!"); // this should not be possible !?!
313	torben	319	stations = stationProvider.getStations();
314			adapter.setStations( stations );
315
316			} else { //communication or parse errors
317	torben	336	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	torben	319	}
339	torben	241	}
340			}
341	torben	237	}