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.View;
import android.widget.ListView;
import dk.thoerup.traininfo.provider.ProviderFactory;
import dk.thoerup.traininfo.provider.StationProvider;
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 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
        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	237	import android.view.View;
22			import android.widget.ListView;
23	torben	319	import dk.thoerup.traininfo.provider.ProviderFactory;
24			import dk.thoerup.traininfo.provider.StationProvider;
25	torben	245	import dk.thoerup.traininfo.util.MessageBox;
26	torben	237
27	torben	336	public class StationList extends ListActivity {
28			public static final int GOTLOCATION = 1001;
29			public static final int GOTSTATIONLIST = 1002;
30			public static final int NOPROVIDER = 1003;
31			public static final int LOCATIONFIXTIMEOUT = 1004;
32
33	torben	237
34	torben	336	public static final int DLG_PROGRESS = 1001;
35	torben	237
36			/** Called when the activity is first created. */
37	torben	336	String dialogMessage = "";
38	torben	237	ProgressDialog dialog;
39	torben	319	LocationLookup locator = null;
40	torben	336	LocatorTask locatorTask;
41	torben	237
42	torben	258	boolean isRunning = false;
43			List<StationBean> stations = new ArrayList<StationBean>();
44
45	torben	319	StationProvider stationProvider = ProviderFactory.getStationProvider();
46	torben	258
47	torben	319
48	torben	237	StationListAdapter adapter = null;
49	torben	258	@SuppressWarnings("unchecked")
50	torben	237	@Override
51			public void onCreate(Bundle savedInstanceState) {
52			super.onCreate(savedInstanceState);
53			setContentView(R.layout.main);
54
55	torben	241
56	torben	237	adapter = new StationListAdapter(this);
57			setListAdapter(adapter);
58
59	torben	319	locator = new LocationLookup(this, stationsFetched);
60	torben	258	if (savedInstanceState == null) {
61			startLookup();
62			} else {
63			stations = (ArrayList<StationBean>) savedInstanceState.getSerializable("stations");
64	torben	260	adapter.setStations(stations);
65	torben	258	}
66	torben	237	}
67
68	torben	243	@Override
69			public void onSaveInstanceState(Bundle outState)
70			{
71	torben	258	if (dialog != null && dialog.isShowing())
72	torben	243	dialog.dismiss();
73	torben	258	outState.putSerializable("stations", (ArrayList<StationBean>) stations);
74	torben	243	}
75	torben	237
76	torben	243
77	torben	237
78			@Override
79			protected Dialog onCreateDialog(int id) {
80			switch (id) {
81			case DLG_PROGRESS:
82			ProgressDialog dlg = new ProgressDialog(this);
83			dlg.setMessage("Wait for location fix");
84			dlg.setCancelable(false);
85	torben	336	return dlg;
86	torben	237	default:
87			return super.onCreateDialog(id);
88			}
89
90			}
91
92
93
94			@Override
95			protected void onPrepareDialog(int id, Dialog dialog) {
96			super.onPrepareDialog(id, dialog);
97			switch (id) {
98			case DLG_PROGRESS:
99			this.dialog = (ProgressDialog) dialog;
100	torben	336	if (!dialogMessage.equals("")) {
101			this.dialog.setMessage(dialogMessage);
102			dialogMessage = "";
103			}
104	torben	237	break;
105			}
106			}
107
108			public void startLookup() {
109			isRunning = true;
110			showDialog(DLG_PROGRESS);
111
112			locator.locateStations();
113	torben	336	stationsFetched.sendEmptyMessageDelayed(LOCATIONFIXTIMEOUT, 20000);
114	torben	237	}
115
116
117			Handler stationsFetched = new Handler() {
118			@Override
119			public void handleMessage(Message msg) {
120	torben	336
121	torben	237	switch (msg.what) {
122			case GOTLOCATION:
123	torben	336	dismissDialog(DLG_PROGRESS);
124
125			startLocatorTask();
126
127	torben	237	break;
128	torben	319
129	torben	237	case NOPROVIDER:
130	torben	336	dismissDialog(DLG_PROGRESS);
131			MessageBox.showMessage(StationList.this,"No location provider enabled. Plase enable gps.");
132	torben	237	break;
133	torben	336	case LOCATIONFIXTIMEOUT:
134	torben	237	if (isRunning) {
135	torben	336	locator.stopSearch();
136	torben	285	if (locator.hasLocation()) {
137	torben	336	stationsFetched.sendEmptyMessage( GOTLOCATION );
138			} else {
139			dismissDialog(DLG_PROGRESS);
140
141			AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);
142			builder.setMessage("GPS fix timed out");
143			builder.setCancelable(true);
144			builder.setPositiveButton("Retry", new DialogInterface.OnClickListener() {
145			public void onClick(DialogInterface dialog, int id) {
146			dialog.dismiss();
147			startLookup();
148
149			}
150			});
151			builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
152			public void onClick(DialogInterface dialog, int id) {
153			dialog.dismiss();
154			}
155			});
156			builder.show();
157
158	torben	285	}
159	torben	237	}
160			break;
161			}
162			isRunning = false;
163			}
164			};
165
166	torben	336	void startLocatorTask()
167			{
168			dialogMessage = "Finding nearby stations";
169			showDialog(DLG_PROGRESS);
170
171			locatorTask = new LocatorTask();
172			locatorTask.execute();
173			}
174	torben	237
175			@Override
176			protected void onListItemClick(ListView l, View v, int position, long id) {
177			super.onListItemClick(l, v, position, id);
178	torben	294
179	torben	258	StationBean station = stations.get(position);
180	torben	294
181			double latitude = station.getLatitude();
182			double longitude = station.getLongitude();
183
184
185	torben	237
186			Intent intent = new Intent(this, DepartureList.class);
187			intent.putExtra("name", station.getName());
188			intent.putExtra("distance", station.getDistance());
189	torben	294	intent.putExtra("latitude", latitude);
190			intent.putExtra("longitude", longitude);
191	torben	310	intent.putExtra("stationid", station.getId());
192	torben	317	intent.putExtra("address", station.getAddress());
193	torben	237	startActivity(intent);
194			}
195
196	torben	317	String lookupAddress(double latitude, double longitude) {
197
198			Geocoder coder = new Geocoder(this, new Locale("da"));
199			StringBuilder sb = new StringBuilder();
200			Log.i("lookupaddr", "" + latitude + "/" + longitude);
201			try {
202			List<Address> addressList = coder.getFromLocation(latitude, longitude, 1);
203			Address addr = addressList.get(0);
204
205
206			int max = addr.getMaxAddressLineIndex();
207			for (int i=0; i<max; i++) {
208			if (i>0)
209			sb.append(", ");
210
211			sb.append(addr.getAddressLine(i));
212			}
213
214
215			} catch (Exception e) {
216			Log.e("DepartureList", "geocoder failed", e);
217			}
218
219			return sb.toString();
220			}
221	torben	241
222			class LocatorTask extends AsyncTask<Void,Void,Void> {
223	torben	319	boolean success;
224	torben	241	@Override
225			protected void onPreExecute() {
226	torben	258
227	torben	241	super.onPreExecute();
228			}
229
230			@Override
231			protected Void doInBackground(Void... params) {
232	torben	319	Location loc = locator.getLocation();
233			success = stationProvider.lookupStations(loc);
234	torben	258
235	torben	319
236			List<StationBean> stations = stationProvider.getStations();
237	torben	317	for (StationBean station : stations) {
238			String addr = lookupAddress(station.getLatitude(), station.getLongitude());
239			station.setAddress(addr);
240			}
241
242	torben	241	return null;
243			}
244
245			@Override
246			protected void onPostExecute(Void result) {
247			super.onPostExecute(result);
248	torben	319	dialog.dismiss();
249
250			if (success) {
251			if (stationProvider.getStations().size() == 0)
252	torben	336	MessageBox.showMessage(StationList.this, "No stations found!"); // this should not be possible !?!
253	torben	319	stations = stationProvider.getStations();
254			adapter.setStations( stations );
255
256			} else { //communication or parse errors
257	torben	336	AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);
258			builder.setMessage("Error on finding nearby stations");
259			builder.setCancelable(true);
260			builder.setPositiveButton("Retry", new DialogInterface.OnClickListener() {
261			public void onClick(DialogInterface dialog, int id) {
262			dialog.dismiss();
263
264			stationsFetched.post( new Runnable() {
265			@Override
266			public void run() {
267			startLocatorTask();
268			}
269			});
270			}
271			});
272			builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
273			public void onClick(DialogInterface dialog, int id) {
274			dialog.dismiss();
275			}
276			});
277			builder.show();
278	torben	319	}
279	torben	241	}
280			}
281	torben	237	}