不调用OnLocationChanged

Question

虽然添加了requestLocationUpdates，但未调用OnLocationChanged()，因此map不显示其当前位置。 地图始终显示其默认模拟位置。请建议克服这个问题。我在清单文件中添加了所有必要的权限。 注意：我不想使用getLastKnownLocation的最后位置，而是我想要当前位置。我等待设备得到修复，有时GPS需要比平常更多的时间，但仍然没有改善。我也带着设备走了近10公里。 :-)。 这是我使用的代码。

public class TestingmapActivity extends MapActivity implements LocationListener {

private MapController myMapController;
private MapView mapView;
private LocationManager myLocationManager;
private double m_dLati = 12.913469, m_dLongi = 77.609761;
String provider;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    myLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    mapView = (MapView) findViewById(R.id.mapview);
    myMapController = mapView.getController();
    provider = LocationManager.GPS_PROVIDER;
    mapView.setBuiltInZoomControls(true);
    mapView.setStreetView(true);
    myMapController.setZoom(14); // Zoon 1 is world view
    myLocationManager.requestLocationUpdates(provider, 0, 0,this);
    setMockLocation(m_dLati, m_dLongi, 500);
}

@Override
protected void onResume() {
    startListening();
    super.onResume();
}

@Override
protected void onPause() {
    stopListening();
    super.onResume();
}

@Override
protected void onStop() {
    stopListening();
    super.onStop();
}

private void startListening() {
    if (myLocationManager != null) {
        myLocationManager.requestLocationUpdates(
                LocationManager.GPS_PROVIDER, 0, 0, this);
    }
}

private void stopListening() {
    if (myLocationManager != null)
        myLocationManager.removeUpdates(this);
}

@Override
protected boolean isRouteDisplayed() {
    // TODO Auto-generated method stub
    return false;
}

private void setMockLocation(double latitude, double longitude,
        float accuracy) {
    Log.v("", "provider name= " + provider);
    myLocationManager.addTestProvider(provider, "requiresNetwork" == "",
            "requiresSatellite" == "", "requiresCell" == "",
            "hasMonetaryCost" == "", "supportsAltitude" == "",
            "supportsSpeed" == "", "supportsBearing" == "",
            android.location.Criteria.POWER_LOW,
            android.location.Criteria.ACCURACY_FINE);
    Location newLocation = new Location(provider);
    newLocation.setLatitude(latitude);
    newLocation.setLongitude(longitude);
    newLocation.setAccuracy(accuracy);
    Toast.makeText(
            getApplicationContext(),
            "Mock: New Latitude = " + newLocation.getLatitude()
                    + " New Longitude = " + newLocation.getLongitude(),
            Toast.LENGTH_LONG).show();
    myLocationManager.setTestProviderEnabled(provider, true);
    myLocationManager.setTestProviderStatus(provider,
            LocationProvider.AVAILABLE, null, System.currentTimeMillis());
    myLocationManager.setTestProviderLocation(provider, newLocation);
}

@Override
public void onLocationChanged(Location location) {
    Log.v("LocationListener", "onLocationChanged " + location.getLatitude()
            + " , " + location.getLongitude());
    int lat = (int) (location.getLatitude() * 1E6);
    int lng = (int) (location.getLongitude() * 1E6);
    GeoPoint point = new GeoPoint(lat, lng);
    myMapController.animateTo(point);       
}

@Override
public void onProviderDisabled(String provider) {}

@Override
public void onProviderEnabled(String provider) {}

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

清单权限：

<uses-permission android:name="android.permission.ACCESS_GPS" />
<uses-permission android:name="android.permission.ACCESS_ASSISTED_GPS" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.LOCATION" />

谢谢，Biplab

Answer 1

您需要在setMockLocation方法中覆盖提供程序。请再次检查该方法。

Answer 2

尝试在室外使用它。因为GPS不能在室内工作..取决于地方..它在室外工作完美..