added step counter example

Author: codeanticode

watchfaces/ex3_step_counter/ex3_step_counter.pde

@@ -0,0 +1,57 @@
+import android.content.Context;
+import android.hardware.Sensor;
+import android.hardware.SensorManager;
+import android.hardware.SensorEvent;
+import android.hardware.SensorEventListener;
+
+Context context;
+SensorManager manager;
+Sensor sensor;
+SensorListener listener;
+
+int offset = -1;
+int steps;
+
+void setup() {
+  fullScreen();
+  frameRate(1);
+  Context context = (Context) surface.getComponent();
+  manager = (SensorManager)context.getSystemService(Context.SENSOR_SERVICE);
+  sensor = manager.getDefaultSensor(Sensor.TYPE_STEP_COUNTER);  
+
+  textFont(createFont("Roboto", 36));
+  fill(255);  
+}
+
+void draw() {
+  background(0);
+  translate(0, +insetBottom/2);
+  if (!ambientMode) {
+    String str = steps + " steps";
+    float w = textWidth(str);
+    text(str, (width - w)/2, height/2 + 24);     
+  }
+}
+
+public void onResume() {
+  super.onResume();
+  Context context = (Context) surface.getComponent();
+  manager = (SensorManager)context.getSystemService(Context.SENSOR_SERVICE);
+  sensor = manager.getDefaultSensor(Sensor.TYPE_STEP_COUNTER);  
+  listener = new SensorListener();
+  
+  manager.registerListener(listener, sensor, SensorManager.SENSOR_DELAY_NORMAL);
+}
+
+public void onPause() {
+  super.onPause();
+  if (manager != null) manager.unregisterListener(listener);
+}
+
+class SensorListener implements SensorEventListener {
+  public void onSensorChanged(SensorEvent event) {
+    if (offset == -1) offset = (int)event.values[0]; 
+    steps = (int)event.values[0] - offset;
+  }
+  public void onAccuracyChanged(Sensor sensor, int accuracy) { }
+}