Added about dialog.

res/menu/accounts_option.xml

@@ -17,6 +17,11 @@
         android:title="@string/compose_action"
 		android:icon="@drawable/ic_menu_compose"
 	/>
+	<item
+		android:id="@+id/about"
+        android:title="@string/about_action"
+		android:icon="@drawable/ic_menu_preferences"
+	/>
 	<!-- 
 		<item android:id="@+id/search"
 		android:title="@string/search_action" />

res/values/strings.xml

@@ -1,10 +1,16 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
     <string name="app_name">K-9</string>
+    <string name="app_authors">Google, The K-9 Krew, and a cast of thousands.</string>
+    <string name="app_authors_fmt">Authors: <xliff:g id="app_authors">%s</xliff:g></string>
+    <string name="app_revision_url">http://code.google.com/p/k9mail/wiki/ReleaseNotes</string>
+    <string name="app_revision_fmt">Revision Information: <xliff:g id="app_revision_url">%s</xliff:g></string>
+    <string name="app_webpage_url">http://code.google.com/p/k9mail/</string>
 
     <string name="read_attachment_label">read Email attachments</string>
     <string name="read_attachment_desc">Allows this application to read your Email attachments.</string>
 
+    <string name="about_title_fmt">About <xliff:g id="app_name">%s</xliff:g></string>
     <string name="accounts_title">Your accounts</string>
     <string name="compose_title">Compose</string>
     <string name="debug_title">Debug</string>
@@ -44,6 +50,7 @@
     <string name="add_attachment_action">Add attachment</string>
     <string name="dump_settings_action">Dump settings</string>
     <string name="empty_trash_action">Empty Trash</string>
+    <string name="about_action">About</string>
 
     <string name="accounts_context_menu_title">Account options</string>
 
@@ -133,6 +140,9 @@ Welcome to K-9 Mail setup.  K-9 is an open source email client for Android based
     <string name="message_discarded_toast">Message discarded.</string>
     <string name="message_saved_toast">Message saved as draft.</string>
 
+	<string name="about_header">About <xliff:g id="app_name">%s</xliff:g></string>
+	<string name="about_version">Version: <xliff:g id="version">%s</xliff:g></string>
+
     <string name="account_setup_basics_title">Set up email</string>
     <string name="account_setup_basics_instructions">Type your account email address:</string>
     <string name="account_setup_basics_instructions2_fmt">(You may add <xliff:g id="number_accounts">%d</xliff:g> more accounts.)</string>

src/com/fsck/k9/activity/Accounts.java

@@ -8,6 +8,8 @@ import android.app.NotificationManager;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
 import android.os.Bundle;
 import android.view.ContextMenu;
 import android.view.KeyEvent;
@@ -15,10 +17,13 @@ import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.Window;
 import android.view.ContextMenu.ContextMenuInfo;
 import android.view.View.OnClickListener;
+import android.webkit.WebView;
 import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
+import android.widget.LinearLayout;
 import android.widget.ListView;
 import android.widget.TextView;
 import android.widget.AdapterView.AdapterContextMenuInfo;
@@ -31,6 +36,7 @@ import com.fsck.k9.Preferences;
 import com.fsck.k9.R;
 import com.fsck.k9.activity.setup.AccountSettings;
 import com.fsck.k9.activity.setup.AccountSetupBasics;
+import com.fsck.k9.activity.setup.AccountSetupCheckSettings;
 import com.fsck.k9.mail.MessagingException;
 import com.fsck.k9.mail.Store;
 import com.fsck.k9.mail.store.LocalStore;
@@ -198,12 +204,57 @@ public class Accounts extends ListActivity implements OnItemClickListener, OnCli
             case R.id.compose:
                 onCompose();
                 break;
+            case R.id.about:
+                onAbout();
+                break;
             default:
                 return super.onOptionsItemSelected(item);
         }
         return true;
     }
 
+    private void onAbout() {
+    	String appName = getString(R.string.app_name);
+    	WebView wv = new WebView(this);
+    	String html = "<h1>" + String.format(getString(R.string.about_title_fmt).toString(),
+        		"<a href=\"" + getString(R.string.app_webpage_url) + "\">" + appName + "</a>") + "</h1>" +
+    		"<p>" + appName + " " + 
+		String.format(getString(R.string.debug_version_fmt).toString(),
+				getVersionNumber()) + "</p>" +
+				"<p>" + String.format(getString(R.string.app_authors_fmt).toString(), 
+						getString(R.string.app_authors)) + "</p>" +
+				"<p>" + String.format(getString(R.string.app_revision_fmt).toString(), 
+						"<a href=\"" + getString(R.string.app_revision_url) + "\">" + 
+						getString(R.string.app_revision_url) + "</a></p>");
+    	wv.loadData(html, "text/html", "utf-8");
+    	new AlertDialog.Builder(this)
+        .setView(wv)
+        .setCancelable(true)
+        .setPositiveButton(R.string.okay_action, new DialogInterface.OnClickListener () {
+        	public void onClick(DialogInterface d, int c) {
+        		d.dismiss();
+        	}
+        })
+        .show();
+    }
+
+    /**
+     * Get current version number.
+     *
+     * @return String version
+     */
+    private String getVersionNumber() {
+            String version = "?";
+            try {
+                    PackageInfo pi =
+getPackageManager().getPackageInfo(getPackageName(), 0);
+                    version = pi.versionName;
+            } catch (PackageManager.NameNotFoundException e) {
+                    //Log.e(TAG, "Package name not found", e);
+            };
+            return version;
+    } 
+    
 	public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
         return true;
     }