-rotation and bearing is now working

kennyhui · Jul 12, 2012 · 8954610 · 8954610
1 parent 9ffeb3e
commit 8954610
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Showing 3 changed files with 61 additions and 1 deletion.
diff --git a/CompassExample/res/layout/activity_compass.xml b/CompassExample/res/layout/activity_compass.xml
@@ -8,6 +8,7 @@
         android:layout_height="wrap_content"
         android:layout_centerHorizontal="true"
         android:layout_centerVertical="true"
+        android:id="@android:id/text1"
         android:padding="@dimen/padding_medium"
         android:text="@string/hello_world"
         tools:context=".CompassActivity" />

diff --git a/CompassExample/src/com/novoda/example/compass/activities/BasicSensorActivity.java b/CompassExample/src/com/novoda/example/compass/activities/BasicSensorActivity.java
@@ -37,6 +37,9 @@ public abstract class BasicSensorActivity extends SherlockFragmentActivity imple
     private SensorManager sensorManager;
     private Sensor acclSensor;
     private Sensor magFieldSensor;
+
+    private double bearing = 0;
+    private int rotationDegrees = 0;
 
 
     public BroadcastReceiver freshLocationReceiver = new BroadcastReceiver() {
@@ -152,7 +155,24 @@ private void updateSensorValues(SensorEvent event) {
             floatBearing += magField.getDeclination();
         if (floatBearing < 0)
             floatBearing += 360;
-        //GlobalData.setBearing((int) floatBearing);
+        setBearing(floatBearing);
+        setRotationInDegrees(floatBearing);
+    }
+
+    private void setRotationInDegrees(double floatBearing) {
+        this.bearing = floatBearing;        
+    }
+
+    private void setBearing(double floatBearing) {
+       this.rotationDegrees =  (int)(360 - floatBearing);
+    }
+
+    public int getRotation(){
+        return rotationDegrees;
+    }
+
+    public double getBearing(){
+        return bearing;
     }
 
     private void setmagValues(SensorEvent event) {

diff --git a/CompassExample/src/com/novoda/example/compass/activities/CompassActivity.java b/CompassExample/src/com/novoda/example/compass/activities/CompassActivity.java
@@ -2,14 +2,53 @@
 
 import com.novoda.example.compass.R;
 
+import android.hardware.Sensor;
+import android.hardware.SensorEvent;
 import android.os.Bundle;
+import android.widget.TextView;
 
 public class CompassActivity extends BasicSensorActivity {
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_compass);
+
+    }
+
+    @Override
+    public void onSensorChanged(SensorEvent evt) {
+        super.onSensorChanged(evt);
+        updateText();
+    }
+
+    private void updateText() {
+        TextView text = (TextView)findViewById(android.R.id.text1);
+        String dirTxt = getDirectionFromBearing(getBearing());
+        text.setText(" Direction = " + dirTxt + " Rotation in degress " + getRotation());
+
+    }
+
+    private String getDirectionFromBearing(double bearing) {
+        int range = (int) (bearing / (360f / 16f));
+        String dirTxt = "";
+        if (range == 15 || range == 0)
+            dirTxt = "N";
+        else if (range == 1 || range == 2)
+            dirTxt = "NE";
+        else if (range == 3 || range == 4)
+            dirTxt = "E";
+        else if (range == 5 || range == 6)
+            dirTxt = "SE";
+        else if (range == 7 || range == 8)
+            dirTxt = "S";
+        else if (range == 9 || range == 10)
+            dirTxt = "SW";
+        else if (range == 11 || range == 12)
+            dirTxt = "W";
+        else if (range == 13 || range == 14)
+            dirTxt = "NW";
+        return dirTxt;
     }