thoerup/traininfo/DepartureList.java

package dk.thoerup.traininfo;

import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.List;

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.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ListView;
import android.widget.TextView;
import dk.thoerup.traininfo.provider.DepartureProvider;
import dk.thoerup.traininfo.provider.ProviderFactory;
import dk.thoerup.traininfo.util.MessageBox;
import static dk.thoerup.traininfo.R.string.*;

public class DepartureList extends ListActivity {

        public static final int DLG_PROGRESS = 1;
        
        
        DepartureListAdapter adapter;
        DepartureProvider provider;
        List<DepartureBean> departures;
        
        int selectedItemId;
        //DepartureBean currentDeparture;
        
        ProgressDialog pgDialog;
        
        DepartureFetcher fetcher;

        StationBean station;
        
        @SuppressWarnings("unchecked")
        @Override
        protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.departurelist);
                
                adapter = new DepartureListAdapter(this);
                setListAdapter(adapter);
                
                Intent launchedBy = getIntent();
        
                station = (StationBean) launchedBy.getSerializableExtra("stationbean");
                
                ((TextView) findViewById(R.id.stationName)).setText( station.getName() );


                ((TextView) findViewById(R.id.stationAddr)).setText( station.getAddress() );
                
                
                findViewById(R.id.header).setOnClickListener( mapLauncher );
                
                int distance = station.getDistance();
                if (distance != 0) {
                        NumberFormat format = NumberFormat.getNumberInstance();
                        format.setMaximumFractionDigits(1);
                        format.setMinimumFractionDigits(1);
                
                        ((TextView) findViewById(R.id.stationDistance)).setText( format.format((double)distance/1000.0) + " km." );
                } else {
                        ((TextView) findViewById(R.id.stationDistance)).setVisibility(View.GONE);
                }
                
        
                if (station.isRegional() == false && station.isSTrain() == false) {
                        getListView().setVisibility( View.GONE );               
                        findViewById(R.id.metroonly).setVisibility( View.VISIBLE );
                        
                } else {
                        provider = ProviderFactory.getDepartureProvider();
                        
                        if (savedInstanceState == null) {
                                startDepartureFetcher();
                        } else {
                                departures = (List<DepartureBean>) savedInstanceState.getSerializable("departures");
                                adapter.setDepartures(departures);
                                selectedItemId = savedInstanceState.getInt("selectedItemId");   
                        }
                }
        }
        
    @Override 
    public void onSaveInstanceState(Bundle outState) 
    {
        if (pgDialog != null && pgDialog.isShowing())
                dismissDialog(DLG_PROGRESS);

        outState.putInt("selectedItemId", selectedItemId);
        
        outState.putSerializable("departures", (ArrayList<DepartureBean>) departures);
    }
        
        @Override
        protected void onListItemClick(ListView l, View v, int position, long id) {
                super.onListItemClick(l, v, position, id);
                
                selectedItemId = position;
                
                DepartureBean dep = departures.get(selectedItemId);
        
                Intent intent = new Intent(this, TimetableList.class);
                intent.putExtra("departure", dep);
                
                startActivity(intent);
                                
        }
        

        @Override
        protected void onPrepareDialog(int id, Dialog dialog) {
                super.onPrepareDialog(id, dialog);
                
                switch (id) {
                case DLG_PROGRESS:
                        pgDialog = (ProgressDialog) dialog;
                        break;
                }
        }
        
        @Override
        protected Dialog onCreateDialog(int id) {
                switch (id) {
                case DLG_PROGRESS:
                        ProgressDialog dlg = new ProgressDialog(this);
                        dlg.setMessage( getString(departurelist_fetchdata) );
                        dlg.setCancelable(true);
                        return dlg;                     
                default:
                        return super.onCreateDialog(id);                
                }
        }

        void startDepartureFetcher() {
                showDialog(DLG_PROGRESS);
                fetcher = new DepartureFetcher(); 
                fetcher.execute(station.getId());
        }
        
        class DialogDismisser implements View.OnClickListener {

                Dialog dlg;
                public DialogDismisser(Dialog d) {
                        dlg = d;
                }
                
                @Override
                public void onClick(View v) {
                        if (dlg.isShowing())
                                dlg.dismiss();
                }       
        }
        
        View.OnClickListener mapLauncher = new View.OnClickListener() {
                @Override
                public void onClick(View v) {                   
                        Uri uri = Uri.parse("geo:" + station.getLatitude() + "," + station.getLongitude());
                        startActivity( new Intent(Intent.ACTION_VIEW, uri));
                }
        };


        class DepartureFetcher extends AsyncTask<Integer, Void, Void> {

                boolean success;

                @Override
                protected void onPostExecute(Void result) {
                        super.onPostExecute(result);
                        
                        
                        pgDialog.dismiss();
                        
                        if (success) {
                                adapter.setDepartures(departures);
                                if (departures.size() == 0) {
                                        MessageBox.showMessage(DepartureList.this, "No departures found");
                                }
                        } else { // communication or parse error
                                AlertDialog.Builder builder = new AlertDialog.Builder(DepartureList.this);                                              
                                builder.setMessage("Error finding departures");
                                builder.setCancelable(true);
                                builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
                                        public void onClick(DialogInterface dialog, int id) {
                                                dialog.dismiss();
                                                startDepartureFetcher();
                                                
                                        }
                                });
                                builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
                                        public void onClick(DialogInterface dialog, int id) {
                                                dialog.dismiss();
                                        }                                                       
                                });
                                
                                try {
                                        builder.show();
                                } catch (android.view.WindowManager.BadTokenException e) {                                      
                                        Log.i("DepartureList", "BadTokenException"); // this can happen if the user switched away from this activity, while doInBackground was running
                                }                               
                        }
                }

                @Override
                protected Void doInBackground(Integer... params) {
                        success = provider.lookupDepartures(params[0]);
                        departures = provider.getDepartures(params[0]);
                        return null;
                }
                
        }
}
1	package dk.thoerup.traininfo;
2
3	import java.text.NumberFormat;
4	import java.util.ArrayList;
5	import java.util.List;
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.net.Uri;
14	import android.os.AsyncTask;
15	import android.os.Bundle;
16	import android.util.Log;
17	import android.view.View;
18	import android.widget.ListView;
19	import android.widget.TextView;
20	import dk.thoerup.traininfo.provider.DepartureProvider;
21	import dk.thoerup.traininfo.provider.ProviderFactory;
22	import dk.thoerup.traininfo.util.MessageBox;
23	import static dk.thoerup.traininfo.R.string.*;
24
25	public class DepartureList extends ListActivity {
26
27	public static final int DLG_PROGRESS = 1;
28
29
30	DepartureListAdapter adapter;
31	DepartureProvider provider;
32	List<DepartureBean> departures;
33
34	int selectedItemId;
35	//DepartureBean currentDeparture;
36
37	ProgressDialog pgDialog;
38
39	DepartureFetcher fetcher;
40
41	StationBean station;
42
43	@SuppressWarnings("unchecked")
44	@Override
45	protected void onCreate(Bundle savedInstanceState) {
46	super.onCreate(savedInstanceState);
47	setContentView(R.layout.departurelist);
48
49	adapter = new DepartureListAdapter(this);
50	setListAdapter(adapter);
51
52	Intent launchedBy = getIntent();
53
54	station = (StationBean) launchedBy.getSerializableExtra("stationbean");
55
56	((TextView) findViewById(R.id.stationName)).setText( station.getName() );
57
58
59	((TextView) findViewById(R.id.stationAddr)).setText( station.getAddress() );
60
61
62	findViewById(R.id.header).setOnClickListener( mapLauncher );
63
64	int distance = station.getDistance();
65	if (distance != 0) {
66	NumberFormat format = NumberFormat.getNumberInstance();
67	format.setMaximumFractionDigits(1);
68	format.setMinimumFractionDigits(1);
69
70	((TextView) findViewById(R.id.stationDistance)).setText( format.format((double)distance/1000.0) + " km." );
71	} else {
72	((TextView) findViewById(R.id.stationDistance)).setVisibility(View.GONE);
73	}
74
75
76	if (station.isRegional() == false && station.isSTrain() == false) {
77	getListView().setVisibility( View.GONE );
78	findViewById(R.id.metroonly).setVisibility( View.VISIBLE );
79
80	} else {
81	provider = ProviderFactory.getDepartureProvider();
82
83	if (savedInstanceState == null) {
84	startDepartureFetcher();
85	} else {
86	departures = (List<DepartureBean>) savedInstanceState.getSerializable("departures");
87	adapter.setDepartures(departures);
88	selectedItemId = savedInstanceState.getInt("selectedItemId");
89	}
90	}
91	}
92
93	@Override
94	public void onSaveInstanceState(Bundle outState)
95	{
96	if (pgDialog != null && pgDialog.isShowing())
97	dismissDialog(DLG_PROGRESS);
98
99	outState.putInt("selectedItemId", selectedItemId);
100
101	outState.putSerializable("departures", (ArrayList<DepartureBean>) departures);
102	}
103
104	@Override
105	protected void onListItemClick(ListView l, View v, int position, long id) {
106	super.onListItemClick(l, v, position, id);
107
108	selectedItemId = position;
109
110	DepartureBean dep = departures.get(selectedItemId);
111
112	Intent intent = new Intent(this, TimetableList.class);
113	intent.putExtra("departure", dep);
114
115	startActivity(intent);
116
117	}
118
119
120	@Override
121	protected void onPrepareDialog(int id, Dialog dialog) {
122	super.onPrepareDialog(id, dialog);
123
124	switch (id) {
125	case DLG_PROGRESS:
126	pgDialog = (ProgressDialog) dialog;
127	break;
128	}
129	}
130
131	@Override
132	protected Dialog onCreateDialog(int id) {
133	switch (id) {
134	case DLG_PROGRESS:
135	ProgressDialog dlg = new ProgressDialog(this);
136	dlg.setMessage( getString(departurelist_fetchdata) );
137	dlg.setCancelable(true);
138	return dlg;
139	default:
140	return super.onCreateDialog(id);
141	}
142	}
143
144	void startDepartureFetcher() {
145	showDialog(DLG_PROGRESS);
146	fetcher = new DepartureFetcher();
147	fetcher.execute(station.getId());
148	}
149
150	class DialogDismisser implements View.OnClickListener {
151
152	Dialog dlg;
153	public DialogDismisser(Dialog d) {
154	dlg = d;
155	}
156
157	@Override
158	public void onClick(View v) {
159	if (dlg.isShowing())
160	dlg.dismiss();
161	}
162	}
163
164	View.OnClickListener mapLauncher = new View.OnClickListener() {
165	@Override
166	public void onClick(View v) {
167	Uri uri = Uri.parse("geo:" + station.getLatitude() + "," + station.getLongitude());
168	startActivity( new Intent(Intent.ACTION_VIEW, uri));
169	}
170	};
171
172
173
174	class DepartureFetcher extends AsyncTask<Integer, Void, Void> {
175
176	boolean success;
177
178	@Override
179	protected void onPostExecute(Void result) {
180	super.onPostExecute(result);
181
182
183	pgDialog.dismiss();
184
185	if (success) {
186	adapter.setDepartures(departures);
187	if (departures.size() == 0) {
188	MessageBox.showMessage(DepartureList.this, "No departures found");
189	}
190	} else { // communication or parse error
191	AlertDialog.Builder builder = new AlertDialog.Builder(DepartureList.this);
192	builder.setMessage("Error finding departures");
193	builder.setCancelable(true);
194	builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
195	public void onClick(DialogInterface dialog, int id) {
196	dialog.dismiss();
197	startDepartureFetcher();
198
199	}
200	});
201	builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
202	public void onClick(DialogInterface dialog, int id) {
203	dialog.dismiss();
204	}
205	});
206
207	try {
208	builder.show();
209	} catch (android.view.WindowManager.BadTokenException e) {
210	Log.i("DepartureList", "BadTokenException"); // this can happen if the user switched away from this activity, while doInBackground was running
211	}
212	}
213	}
214
215	@Override
216	protected Void doInBackground(Integer... params) {
217	success = provider.lookupDepartures(params[0]);
218	departures = provider.getDepartures(params[0]);
219	return null;
220	}
221
222	}
223	}