thoerup/traininfo/TimetableList.java

package dk.thoerup.traininfo;


import static dk.thoerup.traininfo.R.string.generic_cancel;
import static dk.thoerup.traininfo.R.string.generic_retry;
import static dk.thoerup.traininfo.R.string.timetablelist_fetchdata;
import static dk.thoerup.traininfo.R.string.timetablelist_fetcherror;
import static dk.thoerup.traininfo.R.string.timetablelist_nodata;

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.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.ProviderFactory;
import dk.thoerup.traininfo.provider.TimetableProvider;
import dk.thoerup.traininfo.util.MessageBox;

public class TimetableList extends ListActivity {
        
        private static final int DLG_PROGRESS = 8000;
        DepartureEntry departure;
        TimetableListAdapter adapter;
        TimetableFetcher fetcher;
        List<TimetableBean> timetables;
        int commFailCounter = 0;
        
        TimetableProvider provider; 

        @SuppressWarnings("unchecked")
        @Override
        protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.timetablelist);
                
                provider = ProviderFactory.getTimetableProvider();
                
                adapter = new TimetableListAdapter(this);               
                setListAdapter(adapter);


                Intent launchedBy = getIntent();
                departure = (DepartureEntry) launchedBy.getSerializableExtra("departure");
                
                ((TextView)findViewById(R.id.Train)).setText(departure.getTrainNumber());
                ((TextView)findViewById(R.id.Status)).setText(departure.getStatus());
                ((TextView)findViewById(R.id.Location)).setText(departure.getLocation());
                ((TextView)findViewById(R.id.Note)).setText(departure.getNote());
                ((TextView)findViewById(R.id.Updated)).setText(departure.getLastUpdateString(this));
                                                
                
                if (savedInstanceState == null) {
                        startTimetableFetcher();
                } else {
                        timetables = (List<TimetableBean>) savedInstanceState.getSerializable("timetables");
                        adapter.setTimetable(timetables);
                }
        }
        
        @Override
        protected void onStart() {
                super.onStart();
                ProviderFactory.purgeOldEntries();
        }

        @Override
        protected void onDestroy() {
                super.onDestroy();
                
                if (fetcher != null) {
                        fetcher.cancel(true);
                }
        }
        
    @Override
        protected void onListItemClick(ListView l, View v, int position, long id) {
                super.onListItemClick(l, v, position, id);

                TimetableBean tt = timetables.get(position);
                
                StationBean station = new StationBean();
                station.setName( tt.getStation() );
                station.setId( tt.getStationId() );
                station.setRegional(true);
                
                Intent intent = new Intent(this, DepartureList.class);
                intent.putExtra("stationbean", station);
                startActivity(intent);
                
        }
    

        @Override 
    public void onSaveInstanceState(Bundle outState) 
    {           
        dismissDialog(DLG_PROGRESS);
        outState.putSerializable("timetables", (ArrayList<TimetableBean>) timetables);
    }

        
        @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(timetablelist_fetchdata) );
                        dlg.setCancelable(true);
                        return dlg;                     
                default:
                        return super.onCreateDialog(id);                
                }
        }

        void startTimetableFetcher() {
                showDialog(DLG_PROGRESS);
                fetcher = new TimetableFetcher(); 
                fetcher.execute(departure.getType(), departure.getTrainNumber());
        }
        
        class TimetableFetcher extends AsyncTask<String,Void,Void> {
                
                
                @Override
                protected void onPostExecute(Void result) {
                        super.onPostExecute(result);
                        dismissDialog(DLG_PROGRESS);
        
                        
                        if (timetables != null) {
                                commFailCounter = 0;
                                TimetableList.this.getListView().invalidateViews();
                                adapter.setTimetable(timetables);
                                if (timetables.size() == 0) {
                                        MessageBox.showMessage(TimetableList.this, getString(timetablelist_nodata), true);
                                }
                        } else { // communication or parse error
                                commFailCounter++;
                                AlertDialog.Builder builder = new AlertDialog.Builder(TimetableList.this);                                              
                                builder.setMessage(getString(timetablelist_fetcherror));
                                builder.setCancelable(true);
                                if (commFailCounter < 3) {
                                        builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
                                                public void onClick(DialogInterface dialog, int id) {
                                                        dialog.dismiss();
                                                        startTimetableFetcher();
                                                        
                                                }
                                        });
                                }
                                builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
                                        public void onClick(DialogInterface dialog, int id) {
                                                dialog.dismiss();
                                                TimetableList.this.finish();
                                        }                                                       
                                });
                                
                                try {
                                        builder.show();
                                } catch (android.view.WindowManager.BadTokenException e) {                                      
                                        Log.i("TimetableList", "BadTokenException"); // this can happen if the user switched away from this activity, while doInBackground was running
                                }
                                                                
                        }
                        
                }
                
                @Override
                protected Void doInBackground(String... arg0) {
                        String type = arg0[0];
                        String trainID = arg0[1];
                        timetables = provider.lookupTimetable(type, trainID);
                        
                        return null;
                }
                
        }
}
1	package dk.thoerup.traininfo;
2
3
4	import static dk.thoerup.traininfo.R.string.generic_cancel;
5	import static dk.thoerup.traininfo.R.string.generic_retry;
6	import static dk.thoerup.traininfo.R.string.timetablelist_fetchdata;
7	import static dk.thoerup.traininfo.R.string.timetablelist_fetcherror;
8	import static dk.thoerup.traininfo.R.string.timetablelist_nodata;
9
10	import java.util.ArrayList;
11	import java.util.List;
12
13	import android.app.AlertDialog;
14	import android.app.Dialog;
15	import android.app.ListActivity;
16	import android.app.ProgressDialog;
17	import android.content.DialogInterface;
18	import android.content.Intent;
19	import android.os.AsyncTask;
20	import android.os.Bundle;
21	import android.util.Log;
22	import android.view.View;
23	import android.widget.ListView;
24	import android.widget.TextView;
25	import dk.thoerup.traininfo.provider.ProviderFactory;
26	import dk.thoerup.traininfo.provider.TimetableProvider;
27	import dk.thoerup.traininfo.util.MessageBox;
28
29	public class TimetableList extends ListActivity {
30
31	private static final int DLG_PROGRESS = 8000;
32	DepartureEntry departure;
33	TimetableListAdapter adapter;
34	TimetableFetcher fetcher;
35	List<TimetableBean> timetables;
36	int commFailCounter = 0;
37
38	TimetableProvider provider;
39
40	@SuppressWarnings("unchecked")
41	@Override
42	protected void onCreate(Bundle savedInstanceState) {
43	super.onCreate(savedInstanceState);
44	setContentView(R.layout.timetablelist);
45
46	provider = ProviderFactory.getTimetableProvider();
47
48	adapter = new TimetableListAdapter(this);
49	setListAdapter(adapter);
50
51
52
53	Intent launchedBy = getIntent();
54	departure = (DepartureEntry) launchedBy.getSerializableExtra("departure");
55
56	((TextView)findViewById(R.id.Train)).setText(departure.getTrainNumber());
57	((TextView)findViewById(R.id.Status)).setText(departure.getStatus());
58	((TextView)findViewById(R.id.Location)).setText(departure.getLocation());
59	((TextView)findViewById(R.id.Note)).setText(departure.getNote());
60	((TextView)findViewById(R.id.Updated)).setText(departure.getLastUpdateString(this));
61
62
63	if (savedInstanceState == null) {
64	startTimetableFetcher();
65	} else {
66	timetables = (List<TimetableBean>) savedInstanceState.getSerializable("timetables");
67	adapter.setTimetable(timetables);
68	}
69	}
70
71	@Override
72	protected void onStart() {
73	super.onStart();
74	ProviderFactory.purgeOldEntries();
75	}
76
77	@Override
78	protected void onDestroy() {
79	super.onDestroy();
80
81	if (fetcher != null) {
82	fetcher.cancel(true);
83	}
84	}
85
86	@Override
87	protected void onListItemClick(ListView l, View v, int position, long id) {
88	super.onListItemClick(l, v, position, id);
89
90	TimetableBean tt = timetables.get(position);
91
92	StationBean station = new StationBean();
93	station.setName( tt.getStation() );
94	station.setId( tt.getStationId() );
95	station.setRegional(true);
96
97	Intent intent = new Intent(this, DepartureList.class);
98	intent.putExtra("stationbean", station);
99	startActivity(intent);
100
101	}
102
103
104
105	@Override
106	public void onSaveInstanceState(Bundle outState)
107	{
108	dismissDialog(DLG_PROGRESS);
109	outState.putSerializable("timetables", (ArrayList<TimetableBean>) timetables);
110	}
111
112
113	@Override
114	protected void onPrepareDialog(int id, Dialog dialog) {
115	super.onPrepareDialog(id, dialog);
116
117	switch (id) {
118	case DLG_PROGRESS:
119	//pgDialog = (ProgressDialog) dialog;
120	break;
121	}
122	}
123
124	@Override
125	protected Dialog onCreateDialog(int id) {
126	switch (id) {
127	case DLG_PROGRESS:
128	ProgressDialog dlg = new ProgressDialog(this);
129	dlg.setMessage( getString(timetablelist_fetchdata) );
130	dlg.setCancelable(true);
131	return dlg;
132	default:
133	return super.onCreateDialog(id);
134	}
135	}
136
137	void startTimetableFetcher() {
138	showDialog(DLG_PROGRESS);
139	fetcher = new TimetableFetcher();
140	fetcher.execute(departure.getType(), departure.getTrainNumber());
141	}
142
143	class TimetableFetcher extends AsyncTask<String,Void,Void> {
144
145
146	@Override
147	protected void onPostExecute(Void result) {
148	super.onPostExecute(result);
149	dismissDialog(DLG_PROGRESS);
150
151
152	if (timetables != null) {
153	commFailCounter = 0;
154	TimetableList.this.getListView().invalidateViews();
155	adapter.setTimetable(timetables);
156	if (timetables.size() == 0) {
157	MessageBox.showMessage(TimetableList.this, getString(timetablelist_nodata), true);
158	}
159	} else { // communication or parse error
160	commFailCounter++;
161	AlertDialog.Builder builder = new AlertDialog.Builder(TimetableList.this);
162	builder.setMessage(getString(timetablelist_fetcherror));
163	builder.setCancelable(true);
164	if (commFailCounter < 3) {
165	builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
166	public void onClick(DialogInterface dialog, int id) {
167	dialog.dismiss();
168	startTimetableFetcher();
169
170	}
171	});
172	}
173	builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
174	public void onClick(DialogInterface dialog, int id) {
175	dialog.dismiss();
176	TimetableList.this.finish();
177	}
178	});
179
180	try {
181	builder.show();
182	} catch (android.view.WindowManager.BadTokenException e) {
183	Log.i("TimetableList", "BadTokenException"); // this can happen if the user switched away from this activity, while doInBackground was running
184	}
185
186	}
187
188	}
189
190	@Override
191	protected Void doInBackground(String... arg0) {
192	String type = arg0[0];
193	String trainID = arg0[1];
194	timetables = provider.lookupTimetable(type, trainID);
195
196	return null;
197	}
198
199	}
200	}