Android 检索传感器事件
示例
从板载传感器中检索传感器信息：
public class MainActivity extends Activity implements SensorEventListener {
private SensorManager mSensorManager;
private Sensor accelerometer;
private Sensor gyroscope;
float[] accelerometerData = new float[3];
float[] gyroscopeData = new float[3];
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
accelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
gyroscope = mSensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE);
}
@Override
public void onResume() {
//注册您感兴趣的传感器的侦听器
mSensorManager.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_FASTEST);
mSensorManager.registerListener(this, gyroscope, SensorManager.SENSOR_DELAY_FASTEST);
super.onResume();
}
@Override
protected void onPause() {
//取消注册任何先前注册的侦听器
mSensorManager.unregisterListener(this);
super.onPause();
}
@Override
public void onSensorChanged(SensorEvent event) {
//检查要轮询的传感器数据的类型，并将其存储到相应的浮点数组中
if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
accelerometerData = event.values;
} else if (event.sensor.getType() == Sensor.TYPE_GYROSCOPE) {
gyroscopeData = event.values;
}
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
//TODO自动生成的方法存根
}
}