package mobile.android.sensor;    import java.util.List;  import android.app.Activity;  import android.hardware.Sensor;  import android.hardware.SensorEvent;  import android.hardware.SensorEventListener;  import android.hardware.SensorManager;  import android.os.Bundle;  import android.widget.TextView;    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) {    super.onCreate(savedInstanceState);    setContentView(R.layout.main);    // 获得SensorManager对象    SensorManager sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);      // 注册加速度传感器    sensorManager.registerListener(this,      sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),      SensorManager.SENSOR_DELAY_FASTEST);      // 注册磁场传感器    sensorManager.registerListener(this,      sensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD),      SensorManager.SENSOR_DELAY_FASTEST);      // 注册光线传感器    sensorManager.registerListener(this,      sensorManager.getDefaultSensor(Sensor.TYPE_LIGHT),      SensorManager.SENSOR_DELAY_FASTEST);      // 注册方向传感器    sensorManager.registerListener(this,      sensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION),      SensorManager.SENSOR_DELAY_FASTEST);      tvAccelerometer = (TextView) findViewById(R.id.tvAccelerometer);    tvMagentic = (TextView) findViewById(R.id.tvMagentic);    tvLight = (TextView) findViewById(R.id.tvLight);    tvOrientation = (TextView) findViewById(R.id.tvOrientation);    tvSensors = (TextView) findViewById(R.id.tvSensors);      // 获得当前手机支持的所有传感器    List<Sensor> sensors = sensorManager.getSensorList(Sensor.TYPE_ALL);    for (Sensor sensor : sensors) {     // 输出当前传感器的名称     tvSensors.append(sensor.getName() + "\n");    }   }     @Override   public void onSensorChanged(SensorEvent event) {    // 通过getType方法获得当前传回数据的传感器类型    switch (event.sensor.getType()) {    case Sensor.TYPE_ACCELEROMETER: // 处理加速度传感器传回的数据     String accelerometer = "加速度\n" + "X：" + event.values[0] + "\n"       + "Y:" + event.values[1] + "\n" + "Z:" + event.values[2]       + "\n";     tvAccelerometer.setText(accelerometer);     break;    case Sensor.TYPE_LIGHT: // 处理光线传感器传回的数据     tvLight.setText("亮度：" + event.values[0]);     break;    case Sensor.TYPE_MAGNETIC_FIELD: // 处理磁场传感器传回的数据     String magentic = "磁场\n" + "X：" + event.values[0] + "\n" + "Y:"       + event.values[1] + "\n" + "Z:" + event.values[2] + "\n";     tvMagentic.setText(magentic);     break;    case Sensor.TYPE_ORIENTATION: // 处理方向传感器传回的数据     String orientation = "方向\n" + "X：" + event.values[0] + "\n" + "Y:"       + event.values[1] + "\n" + "Z:" + event.values[2] + "\n";     tvOrientation.setText(orientation);     break;    }   }     @Override   public void onAccuracyChanged(Sensor sensor, int accuracy) {   }  }