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));
                                                
                ProviderFactory.purgeOldEntries(); //cleanup before fetching more data
                
                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	1028	ProviderFactory.purgeOldEntries(); //cleanup before fetching more data
63	torben	365
64			if (savedInstanceState == null) {
65			startTimetableFetcher();
66			} else {
67			timetables = (List<TimetableBean>) savedInstanceState.getSerializable("timetables");
68			adapter.setTimetable(timetables);
69			}
70	torben	362	}
71	torben	918
72			@Override
73			protected void onDestroy() {
74			super.onDestroy();
75
76			if (fetcher != null) {
77			fetcher.cancel(true);
78			}
79			}
80	torben	365
81	torben	840	@Override
82			protected void onListItemClick(ListView l, View v, int position, long id) {
83			super.onListItemClick(l, v, position, id);
84
85			TimetableBean tt = timetables.get(position);
86
87			StationBean station = new StationBean();
88			station.setName( tt.getStation() );
89			station.setId( tt.getStationId() );
90			station.setRegional(true);
91
92			Intent intent = new Intent(this, DepartureList.class);
93			intent.putExtra("stationbean", station);
94			startActivity(intent);
95
96			}
97
98
99
100			@Override
101	torben	365	public void onSaveInstanceState(Bundle outState)
102			{
103			dismissDialog(DLG_PROGRESS);
104			outState.putSerializable("timetables", (ArrayList<TimetableBean>) timetables);
105			}
106	torben	364
107	torben	365
108			@Override
109			protected void onPrepareDialog(int id, Dialog dialog) {
110			super.onPrepareDialog(id, dialog);
111
112			switch (id) {
113			case DLG_PROGRESS:
114			//pgDialog = (ProgressDialog) dialog;
115			break;
116			}
117			}
118
119			@Override
120			protected Dialog onCreateDialog(int id) {
121			switch (id) {
122			case DLG_PROGRESS:
123	torben	561	ProgressDialog dlg = new ProgressDialog(this);
124			dlg.setMessage( getString(timetablelist_fetchdata) );
125	torben	365	dlg.setCancelable(true);
126			return dlg;
127			default:
128			return super.onCreateDialog(id);
129			}
130			}
131
132			void startTimetableFetcher() {
133			showDialog(DLG_PROGRESS);
134			fetcher = new TimetableFetcher();
135	torben	699	fetcher.execute(departure.getType(), departure.getTrainNumber());
136	torben	365	}
137
138			class TimetableFetcher extends AsyncTask<String,Void,Void> {
139
140
141			@Override
142			protected void onPostExecute(Void result) {
143			super.onPostExecute(result);
144			dismissDialog(DLG_PROGRESS);
145
146
147	torben	1007	if (timetables != null) {
148	torben	1017	commFailCounter = 0;
149	torben	917	TimetableList.this.getListView().invalidateViews();
150	torben	365	adapter.setTimetable(timetables);
151			if (timetables.size() == 0) {
152	torben	906	MessageBox.showMessage(TimetableList.this, getString(timetablelist_nodata), true);
153	torben	365	}
154			} else { // communication or parse error
155	torben	1017	commFailCounter++;
156	torben	365	AlertDialog.Builder builder = new AlertDialog.Builder(TimetableList.this);
157	torben	561	builder.setMessage(getString(timetablelist_fetcherror));
158	torben	365	builder.setCancelable(true);
159	torben	1017	if (commFailCounter < 3) {
160			builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
161			public void onClick(DialogInterface dialog, int id) {
162			dialog.dismiss();
163			startTimetableFetcher();
164
165			}
166			});
167			}
168	torben	561	builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
169	torben	365	public void onClick(DialogInterface dialog, int id) {
170			dialog.dismiss();
171	torben	843	TimetableList.this.finish();
172	torben	365	}
173	torben	630	});
174
175			try {
176			builder.show();
177			} catch (android.view.WindowManager.BadTokenException e) {
178			Log.i("TimetableList", "BadTokenException"); // this can happen if the user switched away from this activity, while doInBackground was running
179			}
180
181	torben	365	}
182
183			}
184
185			@Override
186			protected Void doInBackground(String... arg0) {
187	torben	699	String type = arg0[0];
188			String trainID = arg0[1];
189	torben	1007	timetables = provider.lookupTimetable(type, trainID);
190	torben	365
191			return null;
192			}
193
194			}
195	torben	362	}