原 安卓传感器实例

		// 获取传感器的系统服务
                mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
                // 获取具体的传感器管理器-记步步增
		mStepSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_STEP_DETECTOR);
                // 获取具体传感器-记步总和
		mStepDetector = mSensorManager.getDefaultSensor(Sensor.TYPE_STEP_COUNTER);
                // 注册传感器的回调 - 获取传感器值
		mSensorManager.registerListener(mSensorEventListener, mStepSensor,
				SensorManager.SENSOR_DELAY_UI);
		mSensorManager.registerListener(mSensorEventListener, mStepDetector,
				SensorManager.SENSOR_DELAY_UI);

	private SensorEventListener mSensorEventListener = new SensorEventListener() {
		private int mStep;

		/**
		 * 传感器精度的改变
		 * @param sensor
		 * @param accuracy
         */
		@Override
		public void onAccuracyChanged(Sensor sensor, int accuracy) {
			Log.i(TAG, "onAccuracyChanged ： accuracy " + accuracy);
		}

		/**
		 * 传感器报告新的值
		 * @param event
         */
		@Override
		public void onSensorChanged(SensorEvent event) {
			Log.i(TAG, "onSensorChanged");
			if (event.sensor.getType() == Sensor.TYPE_STEP_COUNTER) {
				mStep = (int) event.values[0];
			}
			if (event.values[0] == 1.0f) {
				mStep++;
			}
			mTextView.setText(Integer.toString(mStep));
		}
	};

  //界面注册激活
  protected void onResume() {

    super.onResume();

    mSensorManager.registerListener(this, mLight, SensorManager.SENSOR_DELAY_NORMAL);

  }
  //界面隐藏时反注册
  @Override
  protected void onPause() {

    super.onPause();

    mSensorManager.unregisterListener(this);

  }