位置传感器的组成及使用方法

 

 

 

 

//位置传感器：邻近传感器：
public class MainActivity extends Activity implements SensorEventListener {
    private TextView tView;
    private SensorManager sManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.fragment_main);
        tView = (TextView) findViewById(R.id.tv);
        sManager = (SensorManager) getSystemService(SENSOR_SERVICE);

    }

    // 传感器数据变化
    @Override
    public void onSensorChanged(SensorEvent event) {
        // TODO Auto-generated method stub
        switch (event.sensor.getType()) {

        // 邻近传感器 --单位cm
        case Sensor.TYPE_PROXIMITY:

            tView.setText(String.valueOf(event.values[0]));
            break;

        default:
            break;
        }
    }

    // 传感器精度变化
    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {
        // TODO Auto-generated method stub

    }

    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        // 注册传感器

        // 邻近传感器
        sManager.registerListener(this,
                sManager.getDefaultSensor(Sensor.TYPE_PROXIMITY),
                SensorManager.SENSOR_DELAY_UI);
    }

    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        // 不在截获传感器数据
        sManager.unregisterListener(this);

    }

}