无法在谷歌地图上获得两个点的路由？

Question

我正在尝试将Android应用程序设置为超级应用程序，用户可以在其中输入原始位置和目的地位置。然后它将显示路由。

我创建了一个可以从当前位置路由到目的地的应用程序。通过拖动标记来获取目标位置。在这里，Marker正在通过onMarkerDragEnd（Marker marker）方法传递位置。

还有两个edittext框，它们将使用Placepicker进行定位。当我插入地点时，标记出现在地图上。一个用于原点而另一个用于目的地。但路由没有发生。因为我无法传递latlng onMarkerDragEnd（Marker marker）方法中的那些标记。 我需要在onMarkerDragEnd（Marker marker）方法中传递标记的纬度和经度。但问题是我只能传递一个标记的纬度和经度。如何在onMarkerDragEnd（Marker marker）中传递两个标记的latlng？ 或者其他任何方式来做到这一点？

这是我的代码：

 public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == ORIGIN_PICKER_REQUEST) {
        if (resultCode == RESULT_OK) {
            Place place = PlacePicker.getPlace(data, getActivity());

            etOrigin.setText(place.getAddress());
            Originlnlt.setText(place.getLatLng().toString());
            mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(
                    new LatLng(getlong(place.getLatLng().toString()),getlat(place.getLatLng().toString())), DEFAULT_ZOOM));
            mMap.addMarker(markerOptions.position(new LatLng(getlong(place.getLatLng().toString()),getlat(place.getLatLng().toString()))).title("Origin Position").snippet("I have found me"));
            String toastMsg = String.format("Origin Place: %s", place.getName());
            Toast.makeText(getActivity(), toastMsg, Toast.LENGTH_LONG).show();
        }
    }



    if (requestCode == DESTINATION_PICKER_REQUEST) {
        if (resultCode == RESULT_OK) {
            Place place = PlacePicker.getPlace(data, getActivity());
            etDestination.setText(place.getAddress());
            Destinationlnlt.setText(place.getLatLng().toString());
            mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(
                    new LatLng(getlong(place.getLatLng().toString()),getlat(place.getLatLng().toString())), DEFAULT_ZOOM));
            mMap.addMarker(markerOptions
                    .position(new LatLng(getlong(place.getLatLng().toString()),
                            getlat(place.getLatLng().toString())))
                    .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE)).title(place.getName().toString()).snippet(place.getAddress().toString()).title("Destination Position").snippet("I want to go"));
            String toastMsg = String.format("Destination Place: %s", place.getName());
            Toast.makeText(getActivity(), toastMsg, Toast.LENGTH_LONG).show();


        }
    }
    //TODO
}
 @Override
public void onViewCreated(View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);

    mMapView = (MapView) mView.findViewById(R.id.map);
    if (mMapView != null) {
        mMapView.onCreate(null);
        mMapView.onResume();
        mMapView.getMapAsync(this);
    }


    btnFindPath = (Button) mView.findViewById(R.id.btnFindPath);
    etOrigin = (EditText) mView.findViewById(R.id.etOrigin);
    etDestination = (EditText) mView.findViewById(R.id.etDestination);
    Originlnlt = (TextView) mView.findViewById(R.id.originL);
    Destinationlnlt = (TextView) mView.findViewById(R.id.desL);
    btnFindPath.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            //sendRequest();
            Object dataTransfer[] = new Object[2];
            dataTransfer = new Object[3];
            String url = getDirectionsUrl();
            GetDirectionsData getDirectionsData = new GetDirectionsData();
            dataTransfer[0] = mMap;
            dataTransfer[1] = url;
            dataTransfer[2] = new LatLng(end_latitude, end_longitude);
            //dataTransfer[2] = new LatLng( 22.34730250000000,91.83745703125001);
            getDirectionsData.execute(dataTransfer);
        }
    });
    etOrigin.setOnFocusChangeListener(new View.OnFocusChangeListener() {
        @Override
        public void onFocusChange(View v, boolean hasFocus) {
            if (hasFocus) {
                // Always use a TextKeyListener when clearing a TextView to prevent android
                // warnings in the log

                PlacePicker.IntentBuilder builder = new PlacePicker.IntentBuilder();
                try {
                    startActivityForResult(builder.build(getActivity()), ORIGIN_PICKER_REQUEST);
                } catch (GooglePlayServicesRepairableException e) {
                    e.printStackTrace();
                } catch (GooglePlayServicesNotAvailableException e) {
                    e.printStackTrace();
                }
            }
        }
    });

    etDestination.setOnFocusChangeListener(new View.OnFocusChangeListener() {

        @Override
        public void onFocusChange(View v, boolean hasFocus) {
            if (hasFocus) {
                // Always use a TextKeyListener when clearing a TextView to prevent android
                // warnings in the log

                PlacePicker.IntentBuilder builder = new PlacePicker.IntentBuilder();
                try {
                    startActivityForResult(builder.build(getActivity()), DESTINATION_PICKER_REQUEST);
                } catch (GooglePlayServicesRepairableException e) {
                    e.printStackTrace();
                } catch (GooglePlayServicesNotAvailableException e) {
                    e.printStackTrace();
                }
            }
        }
    });
}
public void onMapReady(GoogleMap googleMap) {
    MapsInitializer.initialize(getContext());
    mMap = googleMap;

    //Initialize Google Play Services
    if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        if (ContextCompat.checkSelfPermission(getActivity(),
                Manifest.permission.ACCESS_FINE_LOCATION)
                == PackageManager.PERMISSION_GRANTED) {
            buildGoogleApiClient();
            mMap.setMyLocationEnabled(true);
        }
    } else {
        buildGoogleApiClient();
        mMap.setMyLocationEnabled(true);
    }
    mMap.setOnMarkerDragListener(this);
    mMap.setOnMarkerClickListener(this);
}

protected synchronized void buildGoogleApiClient() {
    mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .addApi(LocationServices.API)
            .build();
    mGoogleApiClient.connect();
}