android/people/PeopleList.java

package com.grundfos.android.people;

import java.util.Date;

import android.app.AlertDialog;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.net.ConnectivityManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.PowerManager;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;

public class PeopleList extends ListActivity {


        public static final int DOWNLOAD = 1010;
        public static final int ABOUT = 1011;

        public static final int DOWNLOAD_SUCCESS = 0;
        public static final int DOWNLOAD_FAILED = 1;

        public static final String PREF_LAST_DB_UPDATE = "LastDbUpdate";
        public static final String PREFS = "PeoplePrefs";

        PeopleDatabase peopleDB;

        ProgressDialog dialog;
        SimpleCursorAdapter adapter; 

        EditText searchWidget;
        
        @Override
        public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.main);


                peopleDB = new PeopleDatabase(this);


                adapter = new SimpleCursorAdapter(this,
                                R.layout.row, // Use this template
                                null , // Give the cursor to the list adapter
                                new String[] { "name", "inits", "company" }, // Map the named db columns ...
                                new int[] {R.id.name, R.id.init, R.id.company}); // To these textviews

                setListAdapter( adapter ) ;

                searchWidget = (EditText) findViewById( R.id.entry);
                searchWidget.addTextChangedListener( new TextWatcher() {
                        public void afterTextChanged(Editable s) {
                                searchStringChanged(s.toString());
                        }
                        public void onTextChanged(CharSequence s, int start, int before, int count){
                        }
                        public void beforeTextChanged(CharSequence s, int start, int count, int after){
                        }
                });

                if ( peopleDB.getPeopleCount() == 0)
                        onEmptyDB();

                Log.i("PeopleList", "Activity started");        
        }


        @Override
        protected void finalize() throws Throwable {
                peopleDB.close();
                super.finalize();
        }


        public void onEmptyDB()
        {
                AlertDialog.Builder builder = new AlertDialog.Builder(this);
                builder.setMessage("Database is empty, download data now?")
                .setCancelable(false)
                .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int id) {
                                dialog.dismiss();
                                loadDatabase();
                        }
                })
                .setNegativeButton("No", new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int id) {
                                dialog.cancel();
                        }
                })
                .show();    
        }

        public void searchStringChanged(String search)
        {
                Cursor names = null;
                if (search.trim().length() >= 2)
                        names = peopleDB.getPeopleList(search);

                adapter.changeCursor(names);
                adapter.notifyDataSetChanged();
        }

        protected void  onListItemClick  (ListView l, View v, int position, long id)
        {
                Intent intent = new Intent(this, PeopleDetails.class);
                intent.putExtra("id", id);
                startActivity(intent);
        }


        @Override
        public boolean onOptionsItemSelected(MenuItem item) {

                switch (item.getItemId()) {
                case DOWNLOAD:
                        loadDatabase();
                        return true;
                case ABOUT:
                        showAbout();
                        return true;
                }

                return super.onOptionsItemSelected(item);
        }


        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
                menu.add(0, DOWNLOAD, 0, "Download DB");
                menu.add(0, ABOUT, 0, "About");
                return true;
        }


        public void showAbout() {
                SharedPreferences settings = getSharedPreferences(PREFS, 0);
                StringBuffer message = new StringBuffer();
                message.append("Grundfos People v0.1\n");
                message.append("By Torben Hørup Nielsen\n");
                message.append("Database size: ").append(peopleDB.getPeopleCount()).append("\n");
                message.append("Last DB update: ").append( settings.getString(PREF_LAST_DB_UPDATE, " - never -"));

                showMessage(message.toString());

        }

        public void showMessage(String message) {
                AlertDialog.Builder builder = new AlertDialog.Builder(this);
                builder.setMessage(message)
                .setCancelable(false)
                .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int id) {
                                dialog.dismiss();
                        }
                })
                .show();

        }

        public void loadDatabase()
        {
                ConnectivityManager cm = (ConnectivityManager) this.getSystemService(Context.CONNECTIVITY_SERVICE);
                if (cm.getActiveNetworkInfo().getType() != ConnectivityManager.TYPE_WIFI) {
                        AlertDialog.Builder builder = new AlertDialog.Builder(this);
                        builder.setMessage("You are not connected to a WiFi network. It is not recommended to load a DB via mobile network")
                        .setCancelable(false)
                        .setPositiveButton("Continue", new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int id) {
                                        dialog.dismiss();
                                        startLoadDatabase();
                                }
                        })
                        .setNegativeButton("Abort", new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int id) {
                                        dialog.cancel();
                                }
                        })
                        .show();    
                } else {
                        startLoadDatabase();
                }
        }


        public void startLoadDatabase()
        {
                dialog = new ProgressDialog(this);
                dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
                dialog.setMessage("Loading...");
                dialog.setCancelable(false);
                dialog.show();

                Thread t = new Thread(reloadDB);
                t.start();
        }

        private Handler progressHandler = new Handler() {
                public void handleMessage(Message msg) {
                        if (msg.what == 0)
                                dialog.setMax( msg.arg1 );
                        else
                                dialog.setProgress(msg.arg1);
                }
        };

        private Handler dbUpdateHandler = new Handler() {

                @Override
                public void handleMessage(Message msg) {
                        dialog.dismiss();
                        if (msg.what == DOWNLOAD_SUCCESS) { 
                                Date d = new Date();

                                SharedPreferences settings = getSharedPreferences(PREFS, 0);

                                SharedPreferences.Editor ed = settings.edit();                  
                                ed.putString(PREF_LAST_DB_UPDATE, d.toLocaleString());
                                ed.commit();
                                
                                searchStringChanged(searchWidget.getText().toString()); //re-run the search after DB reload
                                
                        } else {
                                showMessage("Download failed");

                        }
                }
        };

        Runnable reloadDB = new Runnable() {
                public void run() {
                        PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
                        PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, "My Tag");
                        try
                        {
                                wl.acquire();

                                peopleDB.loadData(progressHandler);
                                dbUpdateHandler.sendEmptyMessage(DOWNLOAD_SUCCESS);
                        } catch (Exception e) {
                                Log.e("PeopleList", "reloadDB", e);
                                dbUpdateHandler.sendEmptyMessage(DOWNLOAD_FAILED);
                        } finally {
                                wl.release();
                        }
                }
        };
}
1	package com.grundfos.android.people;
2
3	import java.util.Date;
4
5	import android.app.AlertDialog;
6	import android.app.ListActivity;
7	import android.app.ProgressDialog;
8	import android.content.Context;
9	import android.content.DialogInterface;
10	import android.content.Intent;
11	import android.content.SharedPreferences;
12	import android.database.Cursor;
13	import android.net.ConnectivityManager;
14	import android.os.Bundle;
15	import android.os.Handler;
16	import android.os.Message;
17	import android.os.PowerManager;
18	import android.text.Editable;
19	import android.text.TextWatcher;
20	import android.util.Log;
21	import android.view.Menu;
22	import android.view.MenuItem;
23	import android.view.View;
24	import android.widget.EditText;
25	import android.widget.ListView;
26	import android.widget.SimpleCursorAdapter;
27
28	public class PeopleList extends ListActivity {
29
30
31	public static final int DOWNLOAD = 1010;
32	public static final int ABOUT = 1011;
33
34	public static final int DOWNLOAD_SUCCESS = 0;
35	public static final int DOWNLOAD_FAILED = 1;
36
37	public static final String PREF_LAST_DB_UPDATE = "LastDbUpdate";
38	public static final String PREFS = "PeoplePrefs";
39
40	PeopleDatabase peopleDB;
41
42	ProgressDialog dialog;
43	SimpleCursorAdapter adapter;
44
45	EditText searchWidget;
46
47	@Override
48	public void onCreate(Bundle savedInstanceState) {
49	super.onCreate(savedInstanceState);
50	setContentView(R.layout.main);
51
52
53	peopleDB = new PeopleDatabase(this);
54
55
56	adapter = new SimpleCursorAdapter(this,
57	R.layout.row, // Use this template
58	null , // Give the cursor to the list adapter
59	new String[] { "name", "inits", "company" }, // Map the named db columns ...
60	new int[] {R.id.name, R.id.init, R.id.company}); // To these textviews
61
62	setListAdapter( adapter ) ;
63
64	searchWidget = (EditText) findViewById( R.id.entry);
65	searchWidget.addTextChangedListener( new TextWatcher() {
66	public void afterTextChanged(Editable s) {
67	searchStringChanged(s.toString());
68	}
69	public void onTextChanged(CharSequence s, int start, int before, int count){
70	}
71	public void beforeTextChanged(CharSequence s, int start, int count, int after){
72	}
73	});
74
75	if ( peopleDB.getPeopleCount() == 0)
76	onEmptyDB();
77
78	Log.i("PeopleList", "Activity started");
79	}
80
81
82
83
84	@Override
85	protected void finalize() throws Throwable {
86	peopleDB.close();
87	super.finalize();
88	}
89
90
91
92	public void onEmptyDB()
93	{
94	AlertDialog.Builder builder = new AlertDialog.Builder(this);
95	builder.setMessage("Database is empty, download data now?")
96	.setCancelable(false)
97	.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
98	public void onClick(DialogInterface dialog, int id) {
99	dialog.dismiss();
100	loadDatabase();
101	}
102	})
103	.setNegativeButton("No", new DialogInterface.OnClickListener() {
104	public void onClick(DialogInterface dialog, int id) {
105	dialog.cancel();
106	}
107	})
108	.show();
109	}
110
111	public void searchStringChanged(String search)
112	{
113	Cursor names = null;
114	if (search.trim().length() >= 2)
115	names = peopleDB.getPeopleList(search);
116
117	adapter.changeCursor(names);
118	adapter.notifyDataSetChanged();
119	}
120
121	protected void onListItemClick (ListView l, View v, int position, long id)
122	{
123	Intent intent = new Intent(this, PeopleDetails.class);
124	intent.putExtra("id", id);
125	startActivity(intent);
126	}
127
128
129	@Override
130	public boolean onOptionsItemSelected(MenuItem item) {
131
132	switch (item.getItemId()) {
133	case DOWNLOAD:
134	loadDatabase();
135	return true;
136	case ABOUT:
137	showAbout();
138	return true;
139	}
140
141	return super.onOptionsItemSelected(item);
142	}
143
144
145	@Override
146	public boolean onCreateOptionsMenu(Menu menu) {
147	menu.add(0, DOWNLOAD, 0, "Download DB");
148	menu.add(0, ABOUT, 0, "About");
149	return true;
150	}
151
152
153	public void showAbout() {
154	SharedPreferences settings = getSharedPreferences(PREFS, 0);
155	StringBuffer message = new StringBuffer();
156	message.append("Grundfos People v0.1\n");
157	message.append("By Torben Hørup Nielsen\n");
158	message.append("Database size: ").append(peopleDB.getPeopleCount()).append("\n");
159	message.append("Last DB update: ").append( settings.getString(PREF_LAST_DB_UPDATE, " - never -"));
160
161	showMessage(message.toString());
162
163	}
164
165	public void showMessage(String message) {
166	AlertDialog.Builder builder = new AlertDialog.Builder(this);
167	builder.setMessage(message)
168	.setCancelable(false)
169	.setPositiveButton("OK", new DialogInterface.OnClickListener() {
170	public void onClick(DialogInterface dialog, int id) {
171	dialog.dismiss();
172	}
173	})
174	.show();
175
176	}
177
178	public void loadDatabase()
179	{
180	ConnectivityManager cm = (ConnectivityManager) this.getSystemService(Context.CONNECTIVITY_SERVICE);
181	if (cm.getActiveNetworkInfo().getType() != ConnectivityManager.TYPE_WIFI) {
182	AlertDialog.Builder builder = new AlertDialog.Builder(this);
183	builder.setMessage("You are not connected to a WiFi network. It is not recommended to load a DB via mobile network")
184	.setCancelable(false)
185	.setPositiveButton("Continue", new DialogInterface.OnClickListener() {
186	public void onClick(DialogInterface dialog, int id) {
187	dialog.dismiss();
188	startLoadDatabase();
189	}
190	})
191	.setNegativeButton("Abort", new DialogInterface.OnClickListener() {
192	public void onClick(DialogInterface dialog, int id) {
193	dialog.cancel();
194	}
195	})
196	.show();
197	} else {
198	startLoadDatabase();
199	}
200	}
201
202
203	public void startLoadDatabase()
204	{
205	dialog = new ProgressDialog(this);
206	dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
207	dialog.setMessage("Loading...");
208	dialog.setCancelable(false);
209	dialog.show();
210
211	Thread t = new Thread(reloadDB);
212	t.start();
213	}
214
215	private Handler progressHandler = new Handler() {
216	public void handleMessage(Message msg) {
217	if (msg.what == 0)
218	dialog.setMax( msg.arg1 );
219	else
220	dialog.setProgress(msg.arg1);
221	}
222	};
223
224	private Handler dbUpdateHandler = new Handler() {
225
226	@Override
227	public void handleMessage(Message msg) {
228	dialog.dismiss();
229	if (msg.what == DOWNLOAD_SUCCESS) {
230	Date d = new Date();
231
232	SharedPreferences settings = getSharedPreferences(PREFS, 0);
233
234	SharedPreferences.Editor ed = settings.edit();
235	ed.putString(PREF_LAST_DB_UPDATE, d.toLocaleString());
236	ed.commit();
237
238	searchStringChanged(searchWidget.getText().toString()); //re-run the search after DB reload
239
240	} else {
241	showMessage("Download failed");
242
243	}
244	}
245	};
246
247	Runnable reloadDB = new Runnable() {
248	public void run() {
249	PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
250	PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, "My Tag");
251	try
252	{
253	wl.acquire();
254
255	peopleDB.loadData(progressHandler);
256	dbUpdateHandler.sendEmptyMessage(DOWNLOAD_SUCCESS);
257	} catch (Exception e) {
258	Log.e("PeopleList", "reloadDB", e);
259	dbUpdateHandler.sendEmptyMessage(DOWNLOAD_FAILED);
260	} finally {
261	wl.release();
262	}
263	}
264	};
265	}