SensorListActivity.java

package com.google.mcommerce.sample.android.chapter08.sensor;

//This file is MainActivity.java
import java.util.HashMap;
import java.util.List;

import android.app.Activity;
import android.hardware.Sensor;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.widget.TextView;

import com.google.mcommerce.sample.android.R;

public class SensorListActivity extends Activity {
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.c08_sensor_list_layout);

		TextView text = (TextView) findViewById(R.id.text);

		SensorManager mgr = (SensorManager) this
				.getSystemService(SENSOR_SERVICE);

		List<Sensor> sensors = mgr.getSensorList(Sensor.TYPE_ALL);

		StringBuilder message = new StringBuilder(2048);
		message.append("The sensors on this device are:\n");

		for (Sensor sensor : sensors) {
			message.append(sensor.getName() + "\n");
			message.append("  Type: " + sensorTypes.get(sensor.getType())
					+ "\n");
			message.append("  Vendor: " + sensor.getVendor() + "\n");
			message.append("  Version: " + sensor.getVersion() + "\n");
			message.append("  Resolution: " + sensor.getResolution() + "\n");
			message.append("  Max Range: " + sensor.getMaximumRange() + "\n");
			message.append("  Power: " + sensor.getPower() + " mA\n");
		}
		text.setText(message);
	}

	private HashMap<Integer, String> sensorTypes = new HashMap<Integer, String>();

	{ // Initialize the map of sensor type values and names
		sensorTypes.put(Sensor.TYPE_ACCELEROMETER, "TYPE_ACCELEROMETER"); // 1
		sensorTypes.put(Sensor.TYPE_GYROSCOPE, "TYPE_GYROSCOPE"); // 4
		sensorTypes.put(Sensor.TYPE_LIGHT, "TYPE_LIGHT"); // 5
		sensorTypes.put(Sensor.TYPE_MAGNETIC_FIELD, "TYPE_MAGNETIC_FIELD"); // 2
		sensorTypes.put(Sensor.TYPE_ORIENTATION, "TYPE_ORIENTATION"); // 3
		sensorTypes.put(Sensor.TYPE_PRESSURE, "TYPE_PRESSURE"); // 6
		sensorTypes.put(Sensor.TYPE_PROXIMITY, "TYPE_PROXIMITY"); // 8
		sensorTypes.put(Sensor.TYPE_TEMPERATURE, "TYPE_TEMPERATURE"); // 7
		sensorTypes.put(Sensor.TYPE_GRAVITY, "TYPE_GRAVITY"); // 9
		sensorTypes.put(Sensor.TYPE_LINEAR_ACCELERATION,
				"TYPE_LINEAR_ACCELERATION"); // 10
		sensorTypes.put(Sensor.TYPE_ROTATION_VECTOR, "TYPE_ROTATION_VECTOR"); // 11
	}
}