Added about dialog showing version number

Author: alexrobin

sensorhub-android-app/AndroidManifest.xml

@@ -1,9 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.sensorhub.android"
-    android:hardwareAccelerated="true"
-    android:versionCode="1"
-    android:versionName="1.0" >
+    android:hardwareAccelerated="true">
 
     <uses-feature android:name="android.hardware.location" />
     <uses-feature android:name="android.hardware.sensor.compass" />

sensorhub-android-app/build.gradle

@@ -12,6 +12,11 @@ android {
   compileSdkVersion rootProject.compileSdkVersion
   buildToolsVersion rootProject.buildToolsVersion
 
+  defaultConfig {
+    versionCode 1
+    versionName rootProject.version
+  }
+
   packagingOptions {
     exclude 'META-INF/LICENSE'
     exclude '**/empty'

sensorhub-android-app/res/menu/main.xml

@@ -20,4 +20,10 @@
         android:showAsAction="never"
         android:title="@string/action_stop"/>
 
+    <item
+            android:id="@+id/action_about"
+            android:orderInCategory="103"
+            android:showAsAction="never"
+            android:title="@string/action_about"/>
+
 </menu>

sensorhub-android-app/res/values/strings.xml

@@ -5,6 +5,7 @@
     <string name="action_settings">Settings</string>
     <string name="action_start">Start SensorHub</string>
     <string name="action_stop">Stop SensorHub</string>
+    <string name="action_about">About</string>
 
     <string-array name="video_codec_list">
         <item>JPEG</item>

sensorhub-android-app/src/org/sensorhub/android/MainActivity.java

@@ -14,6 +14,8 @@
 
 package org.sensorhub.android;
 
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
 import android.util.Log;
 import java.net.MalformedURLException;
 import java.net.URL;
@@ -287,6 +289,10 @@ else if (id == R.id.action_stop)
             getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
             return true;
         }
+        else if (id == R.id.action_about)
+        {
+            showAboutPopup();
+        }
 
         return super.onOptionsItemSelected(item);
     }
@@ -330,6 +336,30 @@ public void onClick(DialogInterface dialog, int whichButton) {
     }
 
 
+    protected void showAboutPopup()
+    {
+        String version = "?";
+
+        try
+        {
+            PackageInfo pInfo = this.getPackageManager().getPackageInfo(getPackageName(), 0);
+            version = pInfo.versionName;
+        }
+        catch (PackageManager.NameNotFoundException e)
+        {
+        }
+
+        String message = "A software platform for building smart sensor networks and the Internet of Things\n\n";
+        message += "Version: " + version;
+
+        AlertDialog.Builder alert = new AlertDialog.Builder(this);
+        alert.setTitle("OpenSensorHub");
+        alert.setMessage(message);
+        alert.setIcon(R.drawable.ic_launcher);
+        alert.show();
+    }
+
+
     @Override
     public void handleEvent(Event<?> e)
     {