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 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	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
10	torben	365	import java.util.ArrayList;
11			import java.util.List;
12
13			import android.app.AlertDialog;
14			import android.app.Dialog;
15	torben	839	import android.app.ListActivity;
16	torben	365	import android.app.ProgressDialog;
17			import android.content.DialogInterface;
18	torben	364	import android.content.Intent;
19	torben	365	import android.os.AsyncTask;
20	torben	362	import android.os.Bundle;
21	torben	630	import android.util.Log;
22	torben	840	import android.view.View;
23			import android.widget.ListView;
24	torben	362	import android.widget.TextView;
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			List<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	563	((TextView)findViewById(R.id.Updated)).setText(departure.getLastUpdateString(this));
61	torben	366
62	torben	365
63			if (savedInstanceState == null) {
64			startTimetableFetcher();
65			} else {
66			timetables = (List<TimetableBean>) savedInstanceState.getSerializable("timetables");
67			adapter.setTimetable(timetables);
68			}
69	torben	362	}
70	torben	918
71			@Override
72			protected void onDestroy() {
73			super.onDestroy();
74
75			if (fetcher != null) {
76			fetcher.cancel(true);
77			}
78			}
79	torben	365
80	torben	840	@Override
81			protected void onListItemClick(ListView l, View v, int position, long id) {
82			super.onListItemClick(l, v, position, id);
83
84			TimetableBean tt = timetables.get(position);
85
86			StationBean station = new StationBean();
87			station.setName( tt.getStation() );
88			station.setId( tt.getStationId() );
89			station.setRegional(true);
90
91			Intent intent = new Intent(this, DepartureList.class);
92			intent.putExtra("stationbean", station);
93			startActivity(intent);
94
95			}
96
97
98
99			@Override
100	torben	365	public void onSaveInstanceState(Bundle outState)
101			{
102			dismissDialog(DLG_PROGRESS);
103			outState.putSerializable("timetables", (ArrayList<TimetableBean>) timetables);
104			}
105	torben	364
106	torben	365
107			@Override
108			protected void onPrepareDialog(int id, Dialog dialog) {
109			super.onPrepareDialog(id, dialog);
110
111			switch (id) {
112			case DLG_PROGRESS:
113			//pgDialog = (ProgressDialog) dialog;
114			break;
115			}
116			}
117
118			@Override
119			protected Dialog onCreateDialog(int id) {
120			switch (id) {
121			case DLG_PROGRESS:
122	torben	561	ProgressDialog dlg = new ProgressDialog(this);
123			dlg.setMessage( getString(timetablelist_fetchdata) );
124	torben	365	dlg.setCancelable(true);
125			return dlg;
126			default:
127			return super.onCreateDialog(id);
128			}
129			}
130
131			void startTimetableFetcher() {
132			showDialog(DLG_PROGRESS);
133			fetcher = new TimetableFetcher();
134	torben	699	fetcher.execute(departure.getType(), departure.getTrainNumber());
135	torben	365	}
136
137			class TimetableFetcher extends AsyncTask<String,Void,Void> {
138
139
140			@Override
141			protected void onPostExecute(Void result) {
142			super.onPostExecute(result);
143			dismissDialog(DLG_PROGRESS);
144
145
146	torben	1007	if (timetables != null) {
147	torben	1017	commFailCounter = 0;
148	torben	917	TimetableList.this.getListView().invalidateViews();
149	torben	365	adapter.setTimetable(timetables);
150			if (timetables.size() == 0) {
151	torben	906	MessageBox.showMessage(TimetableList.this, getString(timetablelist_nodata), true);
152	torben	365	}
153			} else { // communication or parse error
154	torben	1017	commFailCounter++;
155	torben	365	AlertDialog.Builder builder = new AlertDialog.Builder(TimetableList.this);
156	torben	561	builder.setMessage(getString(timetablelist_fetcherror));
157	torben	365	builder.setCancelable(true);
158	torben	1017	if (commFailCounter < 3) {
159			builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
160			public void onClick(DialogInterface dialog, int id) {
161			dialog.dismiss();
162			startTimetableFetcher();
163
164			}
165			});
166			}
167	torben	561	builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
168	torben	365	public void onClick(DialogInterface dialog, int id) {
169			dialog.dismiss();
170	torben	843	TimetableList.this.finish();
171	torben	365	}
172	torben	630	});
173
174			try {
175			builder.show();
176			} catch (android.view.WindowManager.BadTokenException e) {
177			Log.i("TimetableList", "BadTokenException"); // this can happen if the user switched away from this activity, while doInBackground was running
178			}
179
180	torben	365	}
181
182			}
183
184			@Override
185			protected Void doInBackground(String... arg0) {
186	torben	699	String type = arg0[0];
187			String trainID = arg0[1];
188	torben	1007	timetables = provider.lookupTimetable(type, trainID);
189	torben	365
190			return null;
191			}
192
193			}
194	torben	362	}