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	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	boolean isRunning = false;
52	List<StationBean> stations = new ArrayList<StationBean>();
53
54	StationProvider stationProvider = ProviderFactory.getStationProvider();
55
56
57	StationListAdapter adapter = null;
58	@SuppressWarnings("unchecked")
59	@Override
60	public void onCreate(Bundle savedInstanceState) {
61	super.onCreate(savedInstanceState);
62	setContentView(R.layout.main);
63
64
65	adapter = new StationListAdapter(this);
66	setListAdapter(adapter);
67
68	locator = new LocationLookup(this, stationsFetched);
69	if (savedInstanceState == null) {
70	startLookup();
71	} else {
72	stations = (ArrayList<StationBean>) savedInstanceState.getSerializable("stations");
73	adapter.setStations(stations);
74	}
75	}
76
77	@Override
78	public void onSaveInstanceState(Bundle outState)
79	{
80	if (dialog != null && dialog.isShowing())
81	dialog.dismiss();
82	outState.putSerializable("stations", (ArrayList<StationBean>) stations);
83	}
84
85
86
87	@Override
88	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	stationPoints.add( new GeoPair(st.getLatitude(), st.getLongitude(), st.getName()) );
108	}
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	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	return dlg;
130	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	if (!dialogMessage.equals("")) {
145	this.dialog.setMessage(dialogMessage);
146	dialogMessage = "";
147	}
148	break;
149	}
150	}
151
152	public void startLookup() {
153	isRunning = true;
154	showDialog(DLG_PROGRESS);
155
156	locator.locateStations();
157	stationsFetched.sendEmptyMessageDelayed(LOCATIONFIXTIMEOUT, 20000);
158	}
159
160
161	Handler stationsFetched = new Handler() {
162	@Override
163	public void handleMessage(Message msg) {
164
165	switch (msg.what) {
166	case GOTLOCATION:
167	dismissDialog(DLG_PROGRESS);
168
169	startLocatorTask();
170
171	break;
172
173	case NOPROVIDER:
174	dismissDialog(DLG_PROGRESS);
175	MessageBox.showMessage(StationList.this,"No location provider enabled. Plase enable gps.");
176	break;
177	case LOCATIONFIXTIMEOUT:
178	if (isRunning) {
179	locator.stopSearch();
180	if (locator.hasLocation()) {
181	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	}
203	}
204	break;
205	}
206	isRunning = false;
207	}
208	};
209
210	void startLocatorTask()
211	{
212	dialogMessage = "Finding nearby stations";
213	showDialog(DLG_PROGRESS);
214
215	locatorTask = new LocatorTask();
216	locatorTask.execute();
217	}
218
219	@Override
220	protected void onListItemClick(ListView l, View v, int position, long id) {
221	super.onListItemClick(l, v, position, id);
222
223	StationBean station = stations.get(position);
224
225	double latitude = station.getLatitude();
226	double longitude = station.getLongitude();
227
228
229
230	Intent intent = new Intent(this, DepartureList.class);
231	intent.putExtra("name", station.getName());
232	intent.putExtra("distance", station.getDistance());
233	intent.putExtra("latitude", latitude);
234	intent.putExtra("longitude", longitude);
235	intent.putExtra("stationid", station.getId());
236	intent.putExtra("address", station.getAddress());
237	startActivity(intent);
238	}
239
240	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
266	class LocatorTask extends AsyncTask<Void,Void,Void> {
267	boolean success;
268	@Override
269	protected void onPreExecute() {
270
271	super.onPreExecute();
272	}
273
274	@Override
275	protected Void doInBackground(Void... params) {
276	Location loc = locator.getLocation();
277	success = stationProvider.lookupStations(loc);
278
279
280	List<StationBean> stations = stationProvider.getStations();
281	for (StationBean station : stations) {
282	String addr = lookupAddress(station.getLatitude(), station.getLongitude());
283	station.setAddress(addr);
284	}
285
286	return null;
287	}
288
289	@Override
290	protected void onPostExecute(Void result) {
291	super.onPostExecute(result);
292	dialog.dismiss();
293
294	if (success) {
295	if (stationProvider.getStations().size() == 0)
296	MessageBox.showMessage(StationList.this, "No stations found!"); // this should not be possible !?!
297	stations = stationProvider.getStations();
298	adapter.setStations( stations );
299
300	} else { //communication or parse errors
301	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	}
323	}
324	}
325	}