Examples of Android development methods for obtaining sensor data [acceleration sensor, magnetic field sensor, light sensor, direction sensor]

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public class Main extends Activity implements SensorEventListener {
  private TextView tvAccelerometer;
  private TextView tvMagentic;
  private TextView tvLight;
  private TextView tvOrientation;
  private TextView tvSensors;
  @Override
  public void onCreate(Bundle savedInstanceState) {
    (savedInstanceState);
    setContentView();
    // Obtain SensorManager object    SensorManager sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
    // Register the acceleration sensor    (this,
        (Sensor.TYPE_ACCELEROMETER),
        SensorManager.SENSOR_DELAY_FASTEST);
    // Register a magnetic field sensor    (this,
        (Sensor.TYPE_MAGNETIC_FIELD),
        SensorManager.SENSOR_DELAY_FASTEST);
    // Register a light sensor    (this,
        (Sensor.TYPE_LIGHT),
        SensorManager.SENSOR_DELAY_FASTEST);
    // Register direction sensor    (this,
        (Sensor.TYPE_ORIENTATION),
        SensorManager.SENSOR_DELAY_FASTEST);
    tvAccelerometer = (TextView) findViewById();
    tvMagentic = (TextView) findViewById();
    tvLight = (TextView) findViewById();
    tvOrientation = (TextView) findViewById();
    tvSensors = (TextView) findViewById();
    // Get all sensors supported by the current phone    List<Sensor> sensors = (Sensor.TYPE_ALL);
    for (Sensor sensor : sensors) {
      // Output the name of the current sensor      (() + "\n");
    }
  }
  @Override
  public void onSensorChanged(SensorEvent event) {
    // Get the sensor type of the current data being returned through the getType method    switch (()) {
    case Sensor.TYPE_ACCELEROMETER: // Process data sent back by the acceleration sensor      String accelerometer = "Acceleration\n" + "X：" + [0] + "\n"
          + "Y:" + [1] + "\n" + "Z:" + [2]
          + "\n";
      (accelerometer);
      break;
    case Sensor.TYPE_LIGHT: // Process data sent back by the light sensor      ("brightness:" + [0]);
      break;
    case Sensor.TYPE_MAGNETIC_FIELD: // Process data sent back by magnetic field sensor      String magentic = "Magnetic Field\n" + "X：" + [0] + "\n" + "Y:"
          + [1] + "\n" + "Z:" + [2] + "\n";
      (magentic);
      break;
    case Sensor.TYPE_ORIENTATION: // Process data sent back by the direction sensor      String orientation = "Direction\n" + "X：" + [0] + "\n" + "Y:"
          + [1] + "\n" + "Z:" + [2] + "\n";
      (orientation);
      break;
    }
  }
  @Override
  public void onAccuracyChanged(Sensor sensor, int accuracy) {
  }
}