GPSd定位

public class MainActivity extends AppCompatActivity {    private TextView textView1;    private LocationManager manager;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();    }    private void initView() {        textView1 = (TextView) findViewById(R.id.textView1);        manager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);        if (!manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {            Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);            startActivityForResult(intent, 1);            return;        }        String best = manager.getBestProvider(gettcriteria(), true);        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {            // TODO: Consider calling            //    ActivityCompat#requestPermissions            // here to request the missing permissions, and then overriding            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,            //                                          int[] grantResults)            // to handle the case where the user grants the permission. See the documentation            // for ActivityCompat#requestPermissions for more details.            return;        }        manager.addGpsStatusListener(gps);        manager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000, 1, locationListener);    }    LocationListener locationListener = new LocationListener() {        @Override        public void onLocationChanged(Location location) {            up(location);//            textView1.setText("经度---" + String.valueOf(location.getLongitude()) + "\n" + "纬度---" + String.valueOf(location.getLatitude()) + "\n海拔---" + String.valueOf(location.getAltitude()));        }        @Override        public void onStatusChanged(String s, int i, Bundle bundle) {        }        @Override        public void onProviderEnabled(String s) {        }        @Override        public void onProviderDisabled(String s) {        }    };    //状态监听    GpsStatus.Listener gps = new GpsStatus.Listener() {        @Override        public void onGpsStatusChanged(int i) {        }    };    public Criteria gettcriteria() {        Criteria criteria = new Criteria();        criteria.setAccuracy(Criteria.ACCURACY_FINE);        return criteria;    }    public void up(Location location) {        textView1.setText("经度---" + String.valueOf(location.getLongitude())                + "\n" + "纬度---" + String.valueOf(location.getLatitude())                + "\n海拔---" + String.valueOf(location.getAltitude()));    }}