Added app sharing button to contact list activity.

briar-android/res/values/strings.xml

@@ -19,6 +19,7 @@
 	<string name="quit_button">Quit</string>
 	<string name="new_identity_item">New identity\u2026</string>
 	<string name="contact_list_title">Contacts</string>
+	<string name="share_app">Share the Briar App</string>
 	<string name="contact_connected">Connected</string>
 	<string name="format_last_connected">Last connected &lt;br /&gt; %1$s</string>
 	<string name="add_contact_title">Add a Contact</string>

briar-android/src/net/sf/briar/android/contact/ContactListActivity.java

 package net.sf.briar.android.contact;
 
+import static android.content.Intent.ACTION_SEND;
+import static android.content.Intent.EXTRA_STREAM;
 import static android.view.Gravity.CENTER;
 import static android.view.Gravity.CENTER_HORIZONTAL;
 import static android.widget.LinearLayout.HORIZONTAL;
@@ -10,6 +12,7 @@ import static net.sf.briar.android.widgets.CommonLayoutParams.MATCH_MATCH;
 import static net.sf.briar.android.widgets.CommonLayoutParams.MATCH_WRAP;
 import static net.sf.briar.android.widgets.CommonLayoutParams.MATCH_WRAP_1;
 
+import java.io.File;
 import java.util.Collection;
 import java.util.Comparator;
 import java.util.Map;
@@ -35,6 +38,7 @@ import net.sf.briar.api.db.event.DatabaseListener;
 import net.sf.briar.api.transport.ConnectionListener;
 import net.sf.briar.api.transport.ConnectionRegistry;
 import android.content.Intent;
+import android.net.Uri;
 import android.os.Bundle;
 import android.view.View;
 import android.view.View.OnClickListener;
@@ -56,6 +60,7 @@ implements OnClickListener, DatabaseListener, ConnectionListener {
 	@Inject private ConnectionRegistry connectionRegistry;
 	private ContactListAdapter adapter = null;
 	private ListView list = null;
+	private ImageButton addContactButton = null, shareButton = null;
 
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
@@ -85,12 +90,19 @@ implements OnClickListener, DatabaseListener, ConnectionListener {
 		footer.setGravity(CENTER);
 		footer.addView(new HorizontalSpace(this));
 
-		ImageButton addContactButton = new ImageButton(this);
+		addContactButton = new ImageButton(this);
 		addContactButton.setBackgroundResource(0);
 		addContactButton.setImageResource(R.drawable.social_add_person);
 		addContactButton.setOnClickListener(this);
 		footer.addView(addContactButton);
 		footer.addView(new HorizontalSpace(this));
+
+		shareButton = new ImageButton(this);
+		shareButton.setBackgroundResource(0);
+		shareButton.setImageResource(R.drawable.social_share);
+		shareButton.setOnClickListener(this);
+		footer.addView(shareButton);
+		footer.addView(new HorizontalSpace(this));
 		layout.addView(footer);
 
 		setContentView(layout);
@@ -163,7 +175,16 @@ implements OnClickListener, DatabaseListener, ConnectionListener {
 	}
 
 	public void onClick(View view) {
-		startActivity(new Intent(this, AddContactActivity.class));
+		if(view == addContactButton) {
+			startActivity(new Intent(this, AddContactActivity.class));
+		} else if(view == shareButton) {
+			String apkPath = getPackageCodePath();
+			Intent i = new Intent(ACTION_SEND);
+			i.setType("application/*");
+			i.putExtra(EXTRA_STREAM, Uri.fromFile(new File(apkPath)));
+			String shareApp = getResources().getString(R.string.share_app);
+			startActivity(Intent.createChooser(i, shareApp));
+		}
 	}
 
 	public void eventOccurred(DatabaseEvent e) {