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	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.View;
22	import android.widget.ListView;
23	import dk.thoerup.traininfo.provider.ProviderFactory;
24	import dk.thoerup.traininfo.provider.StationProvider;
25	import dk.thoerup.traininfo.util.MessageBox;
26
27	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
34	public static final int DLG_PROGRESS = 1001;
35
36	/** Called when the activity is first created. */
37	String dialogMessage = "";
38	ProgressDialog dialog;
39	LocationLookup locator = null;
40	LocatorTask locatorTask;
41
42	boolean isRunning = false;
43	List<StationBean> stations = new ArrayList<StationBean>();
44
45	StationProvider stationProvider = ProviderFactory.getStationProvider();
46
47
48	StationListAdapter adapter = null;
49	@SuppressWarnings("unchecked")
50	@Override
51	public void onCreate(Bundle savedInstanceState) {
52	super.onCreate(savedInstanceState);
53	setContentView(R.layout.main);
54
55
56	adapter = new StationListAdapter(this);
57	setListAdapter(adapter);
58
59	locator = new LocationLookup(this, stationsFetched);
60	if (savedInstanceState == null) {
61	startLookup();
62	} else {
63	stations = (ArrayList<StationBean>) savedInstanceState.getSerializable("stations");
64	adapter.setStations(stations);
65	}
66	}
67
68	@Override
69	public void onSaveInstanceState(Bundle outState)
70	{
71	if (dialog != null && dialog.isShowing())
72	dialog.dismiss();
73	outState.putSerializable("stations", (ArrayList<StationBean>) stations);
74	}
75
76
77
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	return dlg;
86	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	if (!dialogMessage.equals("")) {
101	this.dialog.setMessage(dialogMessage);
102	dialogMessage = "";
103	}
104	break;
105	}
106	}
107
108	public void startLookup() {
109	isRunning = true;
110	showDialog(DLG_PROGRESS);
111
112	locator.locateStations();
113	stationsFetched.sendEmptyMessageDelayed(LOCATIONFIXTIMEOUT, 20000);
114	}
115
116
117	Handler stationsFetched = new Handler() {
118	@Override
119	public void handleMessage(Message msg) {
120
121	switch (msg.what) {
122	case GOTLOCATION:
123	dismissDialog(DLG_PROGRESS);
124
125	startLocatorTask();
126
127	break;
128
129	case NOPROVIDER:
130	dismissDialog(DLG_PROGRESS);
131	MessageBox.showMessage(StationList.this,"No location provider enabled. Plase enable gps.");
132	break;
133	case LOCATIONFIXTIMEOUT:
134	if (isRunning) {
135	locator.stopSearch();
136	if (locator.hasLocation()) {
137	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	}
159	}
160	break;
161	}
162	isRunning = false;
163	}
164	};
165
166	void startLocatorTask()
167	{
168	dialogMessage = "Finding nearby stations";
169	showDialog(DLG_PROGRESS);
170
171	locatorTask = new LocatorTask();
172	locatorTask.execute();
173	}
174
175	@Override
176	protected void onListItemClick(ListView l, View v, int position, long id) {
177	super.onListItemClick(l, v, position, id);
178
179	StationBean station = stations.get(position);
180
181	double latitude = station.getLatitude();
182	double longitude = station.getLongitude();
183
184
185
186	Intent intent = new Intent(this, DepartureList.class);
187	intent.putExtra("name", station.getName());
188	intent.putExtra("distance", station.getDistance());
189	intent.putExtra("latitude", latitude);
190	intent.putExtra("longitude", longitude);
191	intent.putExtra("stationid", station.getId());
192	intent.putExtra("address", station.getAddress());
193	startActivity(intent);
194	}
195
196	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
222	class LocatorTask extends AsyncTask<Void,Void,Void> {
223	boolean success;
224	@Override
225	protected void onPreExecute() {
226
227	super.onPreExecute();
228	}
229
230	@Override
231	protected Void doInBackground(Void... params) {
232	Location loc = locator.getLocation();
233	success = stationProvider.lookupStations(loc);
234
235
236	List<StationBean> stations = stationProvider.getStations();
237	for (StationBean station : stations) {
238	String addr = lookupAddress(station.getLatitude(), station.getLongitude());
239	station.setAddress(addr);
240	}
241
242	return null;
243	}
244
245	@Override
246	protected void onPostExecute(Void result) {
247	super.onPostExecute(result);
248	dialog.dismiss();
249
250	if (success) {
251	if (stationProvider.getStations().size() == 0)
252	MessageBox.showMessage(StationList.this, "No stations found!"); // this should not be possible !?!
253	stations = stationProvider.getStations();
254	adapter.setStations( stations );
255
256	} else { //communication or parse errors
257	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	}
279	}
280	}
281	}