Create "About" dialog.

res/layout/about_dialog.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:layout_margin="16dp"
+    android:orientation="vertical" >
+
+    <TextView
+        android:id="@+id/about_info"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:drawableLeft="@drawable/coins" />
+
+    <TextView
+        android:id="@+id/about_license"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:textColor="#444444"
+        android:textSize="10dip"
+        android:textStyle="italic" />
+
+</LinearLayout>

res/menu/calculation_list_options.xml

@@ -3,4 +3,7 @@
     <item android:id="@+id/new_calculation"
           android:title="@string/new_calculation"
           android:showAsAction="always" android:icon="@android:drawable/ic_menu_add"/>
+    <item android:id="@+id/about"
+          android:title="@string/menu_about"
+          android:icon="@android:drawable/ic_menu_info_details"/>
 </menu>

res/values-de/strings.xml

@@ -4,6 +4,7 @@
     <string name="app_name">Abrechnung</string>
     <string name="menu_save">Speichern</string>
     <string name="menu_delete">Löschen</string>
+    <string name="menu_about">Über MoneyBalance</string>
     <string name="minus">Entfernen</string>
 
     <string name="confirm_delete_calculation">Bist Du sicher, dass diese Abrechnung gelöscht werden soll?</string>

res/values/strings.xml

@@ -4,6 +4,7 @@
     <string name="app_name">MoneyBalance</string>
     <string name="menu_save">Save</string>
     <string name="menu_delete">Delete</string>
+    <string name="menu_about">About MoneyBalance</string>
     <string name="minus">minus</string>
 
     <string name="confirm_delete_calculation">Are you sure you want to delete this calculation?</string>

src/ivl/android/moneybalance/AboutDialog.java

@@ -0,0 +1,43 @@
+package ivl.android.moneybalance;
+
+import android.app.Dialog;
+import android.content.Context;
+import android.os.Bundle;
+import android.text.Html;
+import android.text.method.LinkMovementMethod;
+import android.widget.TextView;
+
+public class AboutDialog extends Dialog {
+
+	private static String INFO_HTML =
+			"Copyright (C) 2012 Ingo van Lil<br>" +
+			"<a href=\"https://github.com/inguin/moneybalance\">https://github.com/inguin/moneybalance</a><br><br>" +
+			"Icons created by <a href=\"http://www.visualpharm.com\">VisualPharm</a>, " +
+			"used under a <a href=\"http://creativecommons.org/licenses/by-nd/3.0/\">CC BY-ND 3.0</a> license.";
+
+	private static String LICENSE_HTML =
+			"Licensed under the Apache License, Version 2.0 (the \"License\"). " +
+			"You may not use this program except in compliance with the License.<br>" +
+			"You may obtain a copy of the License at " +
+			"<a href=\"http://www.apache.org/licenses/LICENSE-2.0\">http://www.apache.org/licenses/LICENSE-2.0</a>.";
+
+	public AboutDialog(Context context) {
+		super(context);
+	}
+
+	@Override
+	protected void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		setContentView(R.layout.about_dialog);
+		setTitle(R.string.app_name);
+
+		TextView info = (TextView) findViewById(R.id.about_info);
+		info.setText(Html.fromHtml(INFO_HTML));
+		info.setMovementMethod(LinkMovementMethod.getInstance());
+
+		TextView license = (TextView) findViewById(R.id.about_license);
+		license.setText(Html.fromHtml(LICENSE_HTML));
+		license.setMovementMethod(LinkMovementMethod.getInstance());
+	}
+
+}

src/ivl/android/moneybalance/CalculationListActivity.java

@@ -140,15 +140,18 @@ public boolean onCreateOptionsMenu(Menu menu) {
 	}
 
 	@Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-    	switch (item.getItemId()) {
-    		case R.id.new_calculation:
-    			startActivity(new Intent(this, CalculationEditorActivity.class));
-    			return true;
-    		default:
-    			return super.onOptionsItemSelected(item);
-    	}
-    }
+	public boolean onOptionsItemSelected(MenuItem item) {
+		switch (item.getItemId()) {
+			case R.id.new_calculation:
+				startActivity(new Intent(this, CalculationEditorActivity.class));
+				return true;
+			case R.id.about:
+				showAboutDialog();
+				return true;
+			default:
+				return super.onOptionsItemSelected(item);
+		}
+	}
 
 	@Override
 	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
@@ -197,6 +200,11 @@ public void onClick(DialogInterface dialog, int which) {
 		dialog.show();
 	}
 
+	private void showAboutDialog() {
+		AboutDialog about = new AboutDialog(this);
+		about.show();
+	}
+
 	@Override
 	protected void onPause() {
 		super.onPause();