Log magnetic field sensors too

code/SensorLogger/AndroidManifest.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-     package="uk.co.md87.android.sensorlogger" android:versionCode="5" android:versionName="0.1">
+     package="uk.co.md87.android.sensorlogger" android:versionCode="6" android:versionName="0.1">
     <application android:label="Sensor Logger">
          <activity android:name=".MainActivity" android:label="Sensor Logger">
             <intent-filter>

code/SensorLogger/src/uk/co/md87/android/sensorlogger/SensorLoggerService.java

@@ -36,7 +36,7 @@ public class SensorLoggerService extends Service {
     private OutputStreamWriter writer;
 
     private int i = 0;
-    private float[] accelValues;
+    private float[] accelValues, magValues;
 
     private final SensorEventListener accelListener = new SensorEventListener() {
 
@@ -54,16 +54,39 @@ public class SensorLoggerService extends Service {
 
     };
 
+    private final SensorEventListener magneticListener = new SensorEventListener() {
+
+        /** {@inheritDoc} */
+        @Override
+        public void onSensorChanged(final SensorEvent event) {
+            setMagValues(event.values);
+        }
+
+        /** {@inheritDoc} */
+        @Override
+        public void onAccuracyChanged(final Sensor sensor, final int accuracy) {
+            // Don't really care
+        }
+
+    };
+
     public void setAccelValues(float[] accelValues) {
         this.accelValues = accelValues;
     }
 
+    public void setMagValues(float[] magValues) {
+        this.magValues = magValues;
+    }
+
     public void write() {
         try {
             writer.write(System.currentTimeMillis() + ":" +
                     accelValues[SensorManager.DATA_X] + "," +
                     accelValues[SensorManager.DATA_Y] + "," +
-                    accelValues[SensorManager.DATA_Z] + "\n");
+                    accelValues[SensorManager.DATA_Z] + "," +
+                    magValues[SensorManager.DATA_X] + "," +
+                    magValues[SensorManager.DATA_Y] + "," +
+                    magValues[SensorManager.DATA_Z] + "," + "\n");
 
             if (++i % 50 == 0) {
                 writer.flush();
@@ -103,6 +126,9 @@ public class SensorLoggerService extends Service {
         manager.registerListener(accelListener,
                 manager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
                 SensorManager.SENSOR_DELAY_FASTEST);
+        manager.registerListener(magneticListener,
+                manager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD),
+                SensorManager.SENSOR_DELAY_FASTEST);
 
         Toast.makeText(getApplicationContext(), "Sensor logger service started",
                 Toast.LENGTH_SHORT).show();