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 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.android.traininfo.common.DepartureEntry;
import dk.thoerup.android.traininfo.common.TimetableBean;
import dk.thoerup.android.traininfo.common.TimetableEntry;
import dk.thoerup.android.traininfo.common.StationBean.StationEntry;
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;
        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( getLastUpdateString( departure.getUpdated() ));
                                                
                
                ProviderFactory.purgeOldEntries(); //cleanup before fetching more data
                
                if (savedInstanceState == null) {
                        startTimetableFetcher();
                } else {
                        timetables = (TimetableBean) savedInstanceState.getSerializable("timetables");
                        adapter.setTimetable(timetables);
                }
        }

        @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);

                TimetableEntry tt = timetables.entries.get(position);
                
                StationEntry station = new StationEntry();
                station.setName( tt.getStation() );
                station.setId( tt.getStationId() );
                station.setIsRegional(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", (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());
        }
        
        
        public String getLastUpdateString(int lastUpdate) {
                String minutes = this.getString(R.string.departurebean_minutes);
                String unknown = this.getString(R.string.departurebean_unknown);
                switch (lastUpdate) {
                case 1:
                        return "<3 " + minutes;
                case 2:
                        return "3-10 " + minutes;
                case 3:
                        return ">3 " + minutes;
                case 4:
                        return unknown;
                default:
                        return "";
                }
        }

        
        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.entries.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	torben	362	package dk.thoerup.traininfo;
2
3	torben	365
4	torben	630	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	torben	365	import android.app.AlertDialog;
10			import android.app.Dialog;
11	torben	839	import android.app.ListActivity;
12	torben	365	import android.app.ProgressDialog;
13			import android.content.DialogInterface;
14	torben	364	import android.content.Intent;
15	torben	365	import android.os.AsyncTask;
16	torben	362	import android.os.Bundle;
17	torben	630	import android.util.Log;
18	torben	840	import android.view.View;
19			import android.widget.ListView;
20	torben	362	import android.widget.TextView;
21	torben	1066	import dk.thoerup.android.traininfo.common.DepartureEntry;
22			import dk.thoerup.android.traininfo.common.TimetableBean;
23			import dk.thoerup.android.traininfo.common.TimetableEntry;
24			import dk.thoerup.android.traininfo.common.StationBean.StationEntry;
25	torben	365	import dk.thoerup.traininfo.provider.ProviderFactory;
26			import dk.thoerup.traininfo.provider.TimetableProvider;
27			import dk.thoerup.traininfo.util.MessageBox;
28	torben	362
29	torben	839	public class TimetableList extends ListActivity {
30	torben	364
31	torben	365	private static final int DLG_PROGRESS = 8000;
32	torben	981	DepartureEntry departure;
33	torben	365	TimetableListAdapter adapter;
34			TimetableFetcher fetcher;
35	torben	1066	TimetableBean timetables;
36	torben	1017	int commFailCounter = 0;
37	torben	364
38	torben	365	TimetableProvider provider;
39
40			@SuppressWarnings("unchecked")
41	torben	362	@Override
42			protected void onCreate(Bundle savedInstanceState) {
43			super.onCreate(savedInstanceState);
44			setContentView(R.layout.timetablelist);
45	torben	364
46	torben	365	provider = ProviderFactory.getTimetableProvider();
47
48	torben	839	adapter = new TimetableListAdapter(this);
49			setListAdapter(adapter);
50	torben	366
51	torben	839
52	torben	366
53	torben	364	Intent launchedBy = getIntent();
54	torben	981	departure = (DepartureEntry) launchedBy.getSerializableExtra("departure");
55	torben	364
56			((TextView)findViewById(R.id.Train)).setText(departure.getTrainNumber());
57			((TextView)findViewById(R.id.Status)).setText(departure.getStatus());
58	torben	398	((TextView)findViewById(R.id.Location)).setText(departure.getLocation());
59	torben	364	((TextView)findViewById(R.id.Note)).setText(departure.getNote());
60	torben	1066	((TextView)findViewById(R.id.Updated)).setText( getLastUpdateString( departure.getUpdated() ));
61	torben	366
62	torben	1066
63	torben	1028	ProviderFactory.purgeOldEntries(); //cleanup before fetching more data
64	torben	365
65			if (savedInstanceState == null) {
66			startTimetableFetcher();
67			} else {
68	torben	1066	timetables = (TimetableBean) savedInstanceState.getSerializable("timetables");
69	torben	365	adapter.setTimetable(timetables);
70			}
71	torben	362	}
72	torben	918
73			@Override
74			protected void onDestroy() {
75			super.onDestroy();
76
77			if (fetcher != null) {
78			fetcher.cancel(true);
79			}
80			}
81	torben	365
82	torben	840	@Override
83			protected void onListItemClick(ListView l, View v, int position, long id) {
84			super.onListItemClick(l, v, position, id);
85
86	torben	1066	TimetableEntry tt = timetables.entries.get(position);
87	torben	840
88	torben	1066	StationEntry station = new StationEntry();
89	torben	840	station.setName( tt.getStation() );
90			station.setId( tt.getStationId() );
91	torben	1066	station.setIsRegional(true);
92	torben	840
93	torben	1066
94	torben	840	Intent intent = new Intent(this, DepartureList.class);
95			intent.putExtra("stationbean", station);
96			startActivity(intent);
97
98			}
99
100
101
102			@Override
103	torben	365	public void onSaveInstanceState(Bundle outState)
104			{
105			dismissDialog(DLG_PROGRESS);
106	torben	1066	outState.putSerializable("timetables", (TimetableBean) timetables);
107	torben	365	}
108	torben	364
109	torben	365
110			@Override
111			protected void onPrepareDialog(int id, Dialog dialog) {
112			super.onPrepareDialog(id, dialog);
113
114			switch (id) {
115			case DLG_PROGRESS:
116			//pgDialog = (ProgressDialog) dialog;
117			break;
118			}
119			}
120
121			@Override
122			protected Dialog onCreateDialog(int id) {
123			switch (id) {
124			case DLG_PROGRESS:
125	torben	561	ProgressDialog dlg = new ProgressDialog(this);
126			dlg.setMessage( getString(timetablelist_fetchdata) );
127	torben	365	dlg.setCancelable(true);
128			return dlg;
129			default:
130			return super.onCreateDialog(id);
131			}
132			}
133
134			void startTimetableFetcher() {
135			showDialog(DLG_PROGRESS);
136			fetcher = new TimetableFetcher();
137	torben	699	fetcher.execute(departure.getType(), departure.getTrainNumber());
138	torben	365	}
139
140	torben	1066
141			public String getLastUpdateString(int lastUpdate) {
142			String minutes = this.getString(R.string.departurebean_minutes);
143			String unknown = this.getString(R.string.departurebean_unknown);
144			switch (lastUpdate) {
145			case 1:
146			return "<3 " + minutes;
147			case 2:
148			return "3-10 " + minutes;
149			case 3:
150			return ">3 " + minutes;
151			case 4:
152			return unknown;
153			default:
154			return "";
155			}
156			}
157
158
159	torben	365	class TimetableFetcher extends AsyncTask<String,Void,Void> {
160
161
162			@Override
163			protected void onPostExecute(Void result) {
164			super.onPostExecute(result);
165			dismissDialog(DLG_PROGRESS);
166
167
168	torben	1007	if (timetables != null) {
169	torben	1017	commFailCounter = 0;
170	torben	917	TimetableList.this.getListView().invalidateViews();
171	torben	365	adapter.setTimetable(timetables);
172	torben	1066	if (timetables.entries.size() == 0) {
173	torben	906	MessageBox.showMessage(TimetableList.this, getString(timetablelist_nodata), true);
174	torben	365	}
175			} else { // communication or parse error
176	torben	1017	commFailCounter++;
177	torben	365	AlertDialog.Builder builder = new AlertDialog.Builder(TimetableList.this);
178	torben	561	builder.setMessage(getString(timetablelist_fetcherror));
179	torben	365	builder.setCancelable(true);
180	torben	1017	if (commFailCounter < 3) {
181			builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
182			public void onClick(DialogInterface dialog, int id) {
183			dialog.dismiss();
184			startTimetableFetcher();
185
186			}
187			});
188			}
189	torben	561	builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
190	torben	365	public void onClick(DialogInterface dialog, int id) {
191			dialog.dismiss();
192	torben	843	TimetableList.this.finish();
193	torben	365	}
194	torben	630	});
195
196			try {
197			builder.show();
198			} catch (android.view.WindowManager.BadTokenException e) {
199			Log.i("TimetableList", "BadTokenException"); // this can happen if the user switched away from this activity, while doInBackground was running
200			}
201
202	torben	365	}
203
204			}
205
206			@Override
207			protected Void doInBackground(String... arg0) {
208	torben	699	String type = arg0[0];
209			String trainID = arg0[1];
210	torben	1007	timetables = provider.lookupTimetable(type, trainID);
211	torben	365
212			return null;
213			}
214
215			}
216	torben	362	}