android – GnssStatus.CallBack onSatelliteStatusChanged()无效

码

 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            gnssStatusCallBack = new GnssStatus.Callback() {
                @Override
                public void onSatelliteStatusChanged(GnssStatus status) {

                        satelliteCount = status.getSatelliteCount();
                }
            };
            locManager.registerGnssStatusCallback(gnssStatusCallBack);
 } else {
      locManager.addGpsStatusListener(this);
 }
}

注意：我在外面测试过.

如果没有明确要求更新位置,您的设备可能无法获取此信息.以下对我有用,其中成员mGnssStatusCallback是你的GnssStatus.Callback,而Activity(或其他一些类)实现了LocationListener;这个活动实现了它,我将它作为requestLocationUpdates和removeUpdates的最后一个参数传递. 30000表示我们每30秒(30000毫秒)请求更新,0表示我们只需要更新设备已移动> 0米.

您可能需要弄清楚哪些提供商可用,等等.
见Android Training.

例

public class GnssActivity extends Activity implements LocationListener {
    GnssStatus.Callback mGnssStatusCallback;
    LocationManager mLocationManager;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mLocationManager = 
                (LocationManager) getSystemService(LOCATION_SERVICE);
        mGnssStatusCallback = new GnssStatusCallback() {
            // TODO: add your code here!
        };

    }

    @Override
    protected void onStart() {
        super.onStart();
        mLocationManager.registerGnssStatusCallback(mGnssStatusCallback);
        mLocationManager.requestLocationUpdates(
                LocationManager.GPS_PROVIDER, 30000, 0, this
        );
    }

    @Override
    protected void onStop() {
        mLocationManager.removeUpdates(this);
        mLocationManager.unregisterGnssStatusCallback(
                mGnssStatusCallback
        );
        super.onStop()
    }

    @Override
    public void onLocationChanged(Location location) {
    }

    @Override
    public void onStatusChanged(String provider, int status, 
            Bundle extras) {
    }

    @Override
    public void onProviderEnabled(String provider) {
    }

    @Override
    public void onProviderDisabled(String provider) {
    }

    ⋮
}