thoerup/traininfo/TrainInfoList.java

package dk.thoerup.traininfo;

import java.util.ArrayList;
import java.util.List;
import java.util.Locale;

import android.app.Dialog;
import android.app.ListActivity;
import android.app.ProgressDialog;
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 TrainInfoList extends ListActivity  {
        public static final int GOTLOCATION = 1;
        public static final int GOTSTATIONLIST = 2;
        public static final int NOPROVIDER = 3;
        public static final int FIXTIMEOUT = 4;
        public static final int LOOKUPSTATIONFAILED = 5;
        
        public static final int DLG_PROGRESS = 1;
        
        /** Called when the activity is first created. */
        ProgressDialog dialog;
        LocationLookup locator = null;
        LocatorTask locatorTask = new 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);
                
                LocationLookup.removeMockLocation(this);
                //LocationLookup.injectMockLocation(this);
                
                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;
                        break;
                }
        }

        public void startLookup() {
                isRunning = true;
                showDialog(DLG_PROGRESS);
                
                locator.locateStations();
                stationsFetched.sendEmptyMessageDelayed(FIXTIMEOUT, 20000);
        }


        Handler stationsFetched = new Handler() {
                @Override
                public void handleMessage(Message msg) {
                        switch (msg.what) {
                        case GOTLOCATION:
                                dialog.setMessage("Finding nearby stations");
                                locatorTask.execute();
                                break;

                        case NOPROVIDER:
                                dialog.dismiss();
                                MessageBox.showMessage(TrainInfoList.this,"No location provider enabled. Plase enable gps.");
                                break;
                        case FIXTIMEOUT:
                                dialog.dismiss();
                                if (isRunning) {
                                        locator.abortLocationListener();
                                        if (locator.hasLocation()) {
                                                msg.what = GOTLOCATION;
                                                handleMessage( msg ); // ToDo: ugly recursive call !!!
                                        } else {
                                                MessageBox.showMessage(TrainInfoList.this,"GPS fix timed out");
                                        }
                                }
                                break;
                        case LOOKUPSTATIONFAILED:
                                dialog.dismiss();
                                MessageBox.showMessage(TrainInfoList.this,"Error on finding nearby stations");
                                break;
                        }
                        isRunning = false;
                }
        };
        
        
        @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(TrainInfoList.this, "No stations found!"); // this should not be possible !?!
                                stations = stationProvider.getStations();
                                adapter.setStations( stations );                                
                                
                        } else { //communication or parse errors
                                MessageBox.showMessage(TrainInfoList.this, "Error finding stations!");
                        }
                }
        }
}
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.Dialog;
8	import android.app.ListActivity;
9	import android.app.ProgressDialog;
10	import android.content.Intent;
11	import android.location.Address;
12	import android.location.Geocoder;
13	import android.location.Location;
14	import android.os.AsyncTask;
15	import android.os.Bundle;
16	import android.os.Handler;
17	import android.os.Message;
18	import android.util.Log;
19	import android.view.View;
20	import android.widget.ListView;
21	import dk.thoerup.traininfo.provider.ProviderFactory;
22	import dk.thoerup.traininfo.provider.StationProvider;
23	import dk.thoerup.traininfo.util.MessageBox;
24
25	public class TrainInfoList extends ListActivity {
26	public static final int GOTLOCATION = 1;
27	public static final int GOTSTATIONLIST = 2;
28	public static final int NOPROVIDER = 3;
29	public static final int FIXTIMEOUT = 4;
30	public static final int LOOKUPSTATIONFAILED = 5;
31
32	public static final int DLG_PROGRESS = 1;
33
34	/** Called when the activity is first created. */
35	ProgressDialog dialog;
36	LocationLookup locator = null;
37	LocatorTask locatorTask = new LocatorTask();
38
39	boolean isRunning = false;
40	List<StationBean> stations = new ArrayList<StationBean>();
41
42	StationProvider stationProvider = ProviderFactory.getStationProvider();
43
44
45	StationListAdapter adapter = null;
46	@SuppressWarnings("unchecked")
47	@Override
48	public void onCreate(Bundle savedInstanceState) {
49	super.onCreate(savedInstanceState);
50	setContentView(R.layout.main);
51
52	LocationLookup.removeMockLocation(this);
53	//LocationLookup.injectMockLocation(this);
54
55	adapter = new StationListAdapter(this);
56	setListAdapter(adapter);
57
58	locator = new LocationLookup(this, stationsFetched);
59	if (savedInstanceState == null) {
60	startLookup();
61	} else {
62	stations = (ArrayList<StationBean>) savedInstanceState.getSerializable("stations");
63	adapter.setStations(stations);
64	}
65	}
66
67	@Override
68	public void onSaveInstanceState(Bundle outState)
69	{
70	if (dialog != null && dialog.isShowing())
71	dialog.dismiss();
72	outState.putSerializable("stations", (ArrayList<StationBean>) stations);
73	}
74
75
76
77	@Override
78	protected Dialog onCreateDialog(int id) {
79	switch (id) {
80	case DLG_PROGRESS:
81	ProgressDialog dlg = new ProgressDialog(this);
82	dlg.setMessage("Wait for location fix");
83	dlg.setCancelable(false);
84	return dlg;
85	default:
86	return super.onCreateDialog(id);
87	}
88
89	}
90
91
92
93	@Override
94	protected void onPrepareDialog(int id, Dialog dialog) {
95	super.onPrepareDialog(id, dialog);
96	switch (id) {
97	case DLG_PROGRESS:
98	this.dialog = (ProgressDialog) dialog;
99	break;
100	}
101	}
102
103	public void startLookup() {
104	isRunning = true;
105	showDialog(DLG_PROGRESS);
106
107	locator.locateStations();
108	stationsFetched.sendEmptyMessageDelayed(FIXTIMEOUT, 20000);
109	}
110
111
112	Handler stationsFetched = new Handler() {
113	@Override
114	public void handleMessage(Message msg) {
115	switch (msg.what) {
116	case GOTLOCATION:
117	dialog.setMessage("Finding nearby stations");
118	locatorTask.execute();
119	break;
120
121	case NOPROVIDER:
122	dialog.dismiss();
123	MessageBox.showMessage(TrainInfoList.this,"No location provider enabled. Plase enable gps.");
124	break;
125	case FIXTIMEOUT:
126	dialog.dismiss();
127	if (isRunning) {
128	locator.abortLocationListener();
129	if (locator.hasLocation()) {
130	msg.what = GOTLOCATION;
131	handleMessage( msg ); // ToDo: ugly recursive call !!!
132	} else {
133	MessageBox.showMessage(TrainInfoList.this,"GPS fix timed out");
134	}
135	}
136	break;
137	case LOOKUPSTATIONFAILED:
138	dialog.dismiss();
139	MessageBox.showMessage(TrainInfoList.this,"Error on finding nearby stations");
140	break;
141	}
142	isRunning = false;
143	}
144	};
145
146
147
148	@Override
149	protected void onListItemClick(ListView l, View v, int position, long id) {
150	super.onListItemClick(l, v, position, id);
151
152	StationBean station = stations.get(position);
153
154	double latitude = station.getLatitude();
155	double longitude = station.getLongitude();
156
157
158
159	Intent intent = new Intent(this, DepartureList.class);
160	intent.putExtra("name", station.getName());
161	intent.putExtra("distance", station.getDistance());
162	intent.putExtra("latitude", latitude);
163	intent.putExtra("longitude", longitude);
164	intent.putExtra("stationid", station.getId());
165	intent.putExtra("address", station.getAddress());
166	startActivity(intent);
167	}
168
169	String lookupAddress(double latitude, double longitude) {
170
171	Geocoder coder = new Geocoder(this, new Locale("da"));
172	StringBuilder sb = new StringBuilder();
173	Log.i("lookupaddr", "" + latitude + "/" + longitude);
174	try {
175	List<Address> addressList = coder.getFromLocation(latitude, longitude, 1);
176	Address addr = addressList.get(0);
177
178
179	int max = addr.getMaxAddressLineIndex();
180	for (int i=0; i<max; i++) {
181	if (i>0)
182	sb.append(", ");
183
184	sb.append(addr.getAddressLine(i));
185	}
186
187
188	} catch (Exception e) {
189	Log.e("DepartureList", "geocoder failed", e);
190	}
191
192	return sb.toString();
193	}
194
195	class LocatorTask extends AsyncTask<Void,Void,Void> {
196	boolean success;
197	@Override
198	protected void onPreExecute() {
199
200	super.onPreExecute();
201	}
202
203	@Override
204	protected Void doInBackground(Void... params) {
205	Location loc = locator.getLocation();
206	success = stationProvider.lookupStations(loc);
207
208
209	List<StationBean> stations = stationProvider.getStations();
210	for (StationBean station : stations) {
211	String addr = lookupAddress(station.getLatitude(), station.getLongitude());
212	station.setAddress(addr);
213	}
214
215	return null;
216	}
217
218	@Override
219	protected void onPostExecute(Void result) {
220	super.onPostExecute(result);
221	dialog.dismiss();
222
223	if (success) {
224	if (stationProvider.getStations().size() == 0)
225	MessageBox.showMessage(TrainInfoList.this, "No stations found!"); // this should not be possible !?!
226	stations = stationProvider.getStations();
227	adapter.setStations( stations );
228
229	} else { //communication or parse errors
230	MessageBox.showMessage(TrainInfoList.this, "Error finding stations!");
231	}
232	}
233	}
234	}