include build date and git version into about dialog

build.xml

@@ -58,6 +58,20 @@
 		    </filterchain>
 
 	    </copy>
+	    <tstamp>
+		    <format property="build.date" pattern="yyyy-MM-dd" />
+	    </tstamp>
+	    <exec executable="git" outputproperty="git.revision">
+		    <arg line="describe --tags --dirty=+"/>
+	    </exec>
+	    <copy file="version.xml.tpl" tofile="${resource.absolute.dir}/values/version.xml" overwrite="true">
+		    <filterchain>
+			    <replacetokens>
+				    <token key="build_version" value="${ant.project.name} ${git.revision} ${build.date}"/>
+			    </replacetokens>
+		    </filterchain>
+
+	    </copy>
     </target>
 <!--
     <target name="-pre-compile">

res/layout/aboutview.xml

@@ -6,6 +6,14 @@
 		android:layout_width="fill_parent"
 		android:layout_height="wrap_content"
 		android:orientation="vertical" >
+		<TextView
+			android:layout_width="fill_parent"
+			android:layout_height="wrap_content"
+			android:gravity="center"
+			android:textSize="20dp"
+			android:layout_marginBottom="5dp"
+			android:text="@string/build_version"
+			/>
 		<TextView
 			android:layout_width="fill_parent"
 			android:layout_height="wrap_content"

src/APRSdroid.scala

@@ -43,6 +43,8 @@ class APRSdroid extends Activity with OnClickListener
 		super.onCreate(savedInstanceState)
 		setContentView(R.layout.main)
 
+		Log.d(TAG, "starting " + getString(R.string.build_version))
+
 		singleBtn.setOnClickListener(this);
 		startstopBtn.setOnClickListener(this);
 

version.xml.tpl

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- APRSdroid version.xml AUTOGENERATED from version.xml.tpl -->
+<resources>
+<string name="build_version">@build_version@</string>
+</resources>