diff --git a/briar-android/res/values/strings.xml b/briar-android/res/values/strings.xml
index 6cb529c8f..d60559cb5 100644
--- a/briar-android/res/values/strings.xml
+++ b/briar-android/res/values/strings.xml
@@ -6,6 +6,7 @@
 	<string name="welcome">Welcome to Briar! Add a contact to get started.</string>
 	<string name="face_to_face">For security reasons you must be face to face with someone to add them as a contact.</string>
 	<string name="add_contact_button">Add a contact</string>
+	<string name="quit_button">Quit</string>
 	<string name="add_a_contact">Add a Contact</string>
 	<string name="same_network">Briar can add contacts via Wi-Fi or Bluetooth. To use Wi-Fi you must both be connected to the same network.</string>
 	<string name="wifi_not_available">Wi-Fi is not available on this device</string>
diff --git a/briar-android/src/net/sf/briar/android/helloworld/HelloWorldActivity.java b/briar-android/src/net/sf/briar/android/helloworld/HelloWorldActivity.java
index b3b4417d8..34fdc4132 100644
--- a/briar-android/src/net/sf/briar/android/helloworld/HelloWorldActivity.java
+++ b/briar-android/src/net/sf/briar/android/helloworld/HelloWorldActivity.java
@@ -1,36 +1,62 @@
 package net.sf.briar.android.helloworld;
 
+import static android.view.Gravity.CENTER;
 import static android.view.Gravity.CENTER_HORIZONTAL;
 import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
 import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
+import static android.widget.LinearLayout.HORIZONTAL;
 import static android.widget.LinearLayout.VERTICAL;
 import static java.util.logging.Level.INFO;
+import static java.util.logging.Level.WARNING;
 
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
 import net.sf.briar.android.BriarActivity;
 import net.sf.briar.android.BriarService;
+import net.sf.briar.android.BriarService.BriarBinder;
+import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.invitation.AddContactActivity;
-import net.sf.briar.api.android.BundleEncrypter;
+import net.sf.briar.api.Contact;
+import net.sf.briar.api.db.DatabaseComponent;
+import net.sf.briar.api.db.DatabaseExecutor;
+import net.sf.briar.api.db.DbException;
+import net.sf.briar.api.db.event.ContactAddedEvent;
+import net.sf.briar.api.db.event.DatabaseEvent;
+import net.sf.briar.api.db.event.DatabaseListener;
 import android.content.Intent;
 import android.os.Bundle;
+import android.os.IBinder;
 import android.view.View;
 import android.view.View.OnClickListener;
+import android.widget.ArrayAdapter;
 import android.widget.Button;
 import android.widget.LinearLayout;
+import android.widget.ListView;
 import android.widget.RelativeLayout.LayoutParams;
 import android.widget.TextView;
 
 import com.google.inject.Inject;
 
 public class HelloWorldActivity extends BriarActivity
-implements OnClickListener {
+implements OnClickListener, DatabaseListener {
 
 	private static final Logger LOG =
 			Logger.getLogger(HelloWorldActivity.class.getName());
 
-	@Inject private BundleEncrypter bundleEncrypter;
+	private final BriarServiceConnection serviceConnection =
+			new BriarServiceConnection();
+
+	@Inject private DatabaseComponent db;
+	@Inject @DatabaseExecutor private Executor dbExecutor;
+
+	Button addContact = null, quit = null;
+	private ArrayAdapter<String> adapter = null;
 
 	@Override
 	public void onCreate(Bundle state) {
@@ -51,27 +77,140 @@ implements OnClickListener {
 		faceToFace.setText(R.string.face_to_face);
 		layout.addView(faceToFace);
 
-		Button addContact = new Button(this);
+		LinearLayout innerLayout = new LinearLayout(this);
+		innerLayout.setOrientation(HORIZONTAL);
+		innerLayout.setGravity(CENTER);
+
+		addContact = new Button(this);
 		LayoutParams lp = new LayoutParams(WRAP_CONTENT, WRAP_CONTENT);
 		addContact.setLayoutParams(lp);
 		addContact.setText(R.string.add_contact_button);
 		addContact.setCompoundDrawablesWithIntrinsicBounds(
 				R.drawable.social_add_person, 0, 0, 0);
 		addContact.setOnClickListener(this);
-		layout.addView(addContact);
+		innerLayout.addView(addContact);
+
+		quit = new Button(this);
+		quit.setLayoutParams(lp);
+		quit.setText(R.string.quit_button);
+		quit.setOnClickListener(this);
+		innerLayout.addView(quit);
+		layout.addView(innerLayout);
+
+		adapter = new ArrayAdapter<String>(this,
+				android.R.layout.simple_expandable_list_item_1,
+				new ArrayList<String>());
+		ListView listView = new ListView(this);
+		listView.setAdapter(adapter);
+		layout.addView(listView);
 
 		setContentView(layout);
 
-		startService(new Intent(BriarService.class.getName()));
-	}
+		// Listen for database events
+		db.addListener(this);
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		if(LOG.isLoggable(INFO)) LOG.info("Destroyed");
+		// Start the service and bind to it
+		startService(new Intent(BriarService.class.getName()));
+		bindService(new Intent(BriarService.class.getName()),
+				serviceConnection, 0);
+
+		// Add some fake contacts to the database in a background thread
+		dbExecutor.execute(new Runnable() {
+			public void run() {
+				try {
+					// Wait for the service to be bound and started
+					IBinder binder = serviceConnection.waitForBinder();
+					((BriarBinder) binder).getService().waitForStartup();
+					if(LOG.isLoggable(INFO)) LOG.info("Service started");
+					// Insert a couple of fake contacts
+					db.addContact("Alice");
+					db.addContact("Bob");
+				} catch(DbException e) {
+					if(LOG.isLoggable(WARNING))
+						LOG.log(WARNING, e.toString(), e);
+				} catch(InterruptedException e) {
+					if(LOG.isLoggable(INFO))
+						LOG.info("Interrupted while waiting for service");
+					Thread.currentThread().interrupt();
+				}
+			}
+		});
 	}
 
 	public void onClick(View view) {
-		startActivity(new Intent(this, AddContactActivity.class));
+		if(view == addContact)
+			startActivity(new Intent(this, AddContactActivity.class));
+		else if(view == quit)
+			quit();
+	}
+
+	private void quit() {
+		new Thread() {
+			@Override
+			public void run() {
+				try {
+					// Wait for the service to be bound and started
+					IBinder binder = serviceConnection.waitForBinder();
+					BriarService service = ((BriarBinder) binder).getService();
+					service.waitForStartup();
+					// Shut down the service and wait for it to shut down
+					if(LOG.isLoggable(INFO)) LOG.info("Shutting down service");
+					service.shutdown();
+					service.waitForShutdown();
+					if(LOG.isLoggable(INFO)) LOG.info("Service shut down");
+					// Unbind from the service and finish the activity
+					runOnUiThread(new Runnable() {
+						public void run() {
+							unbindService(serviceConnection);
+							finish();
+						}
+					});
+				} catch(InterruptedException e) {
+					if(LOG.isLoggable(INFO))
+						LOG.info("Interrupted while waiting for service");
+				}
+			}
+		}.start();
+	}
+
+	public void eventOccurred(DatabaseEvent e) {
+		if(e instanceof ContactAddedEvent) reloadContactList();
+	}
+
+	private void reloadContactList() {
+		dbExecutor.execute(new Runnable() {
+			public void run() {
+				try {
+					// Wait for the service to be bound and started
+					IBinder binder = serviceConnection.waitForBinder();
+					((BriarBinder) binder).getService().waitForStartup();
+					// Load the contacts from the database
+					final Collection<Contact> contacts = db.getContacts();
+					if(LOG.isLoggable(INFO))
+						LOG.info("Loaded " + contacts.size() + " contacts");
+					// Update the contact list on the UI thread
+					runOnUiThread(new Runnable() {
+						public void run() {
+							updateContactList(contacts);
+						}
+					});
+				} catch(DbException e) {
+					if(LOG.isLoggable(WARNING))
+						LOG.log(WARNING, e.toString(), e);
+				} catch(InterruptedException e) {
+					if(LOG.isLoggable(INFO))
+						LOG.info("Interrupted while waiting for service");
+					Thread.currentThread().interrupt();
+				}
+			}
+		});
+	}
+
+	private void updateContactList(Collection<Contact> contacts) {
+		List<String> names = new ArrayList<String>(contacts.size());
+		for(Contact c : contacts) names.add(c.getName());
+		Collections.sort(names);
+		adapter.clear();
+		for(String name : names) adapter.add(name);
 	}
 }
diff --git a/briar-api/src/net/sf/briar/api/db/DatabaseExecutor.java b/briar-api/src/net/sf/briar/api/db/DatabaseExecutor.java
index 70e1de34b..82da7a727 100644
--- a/briar-api/src/net/sf/briar/api/db/DatabaseExecutor.java
+++ b/briar-api/src/net/sf/briar/api/db/DatabaseExecutor.java
@@ -1,5 +1,6 @@
 package net.sf.briar.api.db;
 
+import static java.lang.annotation.ElementType.FIELD;
 import static java.lang.annotation.ElementType.PARAMETER;
 import static java.lang.annotation.RetentionPolicy.RUNTIME;
 
@@ -10,6 +11,6 @@ import com.google.inject.BindingAnnotation;
 
 /** Annotation for injecting the executor for database tasks. */
 @BindingAnnotation
-@Target({ PARAMETER })
+@Target({ FIELD, PARAMETER })
 @Retention(RUNTIME)
 public @interface DatabaseExecutor {}