Android中的Google Map Directions

我正在尝试在我的项目上使用Google Map Direction

在这里引用：http : //www.akexorcist.com/2015/12/google-direction-library-for-android-en.html

但是它给了我这个错误-> .dex文件中方法引用的数量不能超过64K

我的代码

public class Confirmation extends AppCompatActivity implements OnMapReadyCallback,DirectionCallback {

    double locationLatMap;
    double locationLongMap;
    double destinationLatMap;
    double destinationLongMap;


    LatLng locationAPI=new LatLng(locationLatMap,locationLongMap);
    LatLng DestinationAPI=new LatLng(destinationLatMap,destinationLongMap);

    private GoogleMap mMap;
    String serverKey = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXx";

    Location location=new Location("location");
    Location destination=new Location("destination");

    String start,end;
    String cost;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.confirmation_act);


        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);
        //

        EditText lat1=(EditText)findViewById(R.id.lat1);
        EditText lat2=(EditText)findViewById(R.id.lat2);


        Bundle bundle = getIntent().getExtras();
        final Double d1=bundle.getDouble("d1");
        final Double d2=bundle.getDouble("d2");
        final Double d3=bundle.getDouble("d3");
        final Double d4=bundle.getDouble("d4");

        locationLatMap=d1;
        locationLongMap=d2;
        destinationLatMap=d3;
        destinationLongMap=d4;


        Geocoder geocoder = new Geocoder(this, Locale.getDefault());
        List<Address> addresses = null;
        try {
            addresses = geocoder.getFromLocation(d1, d2, 1);
            String cityName = addresses.get(0).getAddressLine(0);
            String stateName = addresses.get(0).getAddressLine(1);
            String countryName = addresses.get(0).getAddressLine(2);

            lat1.setText("From: "+"\n"+cityName + " " + stateName + " " + countryName);

            start=cityName + " " + stateName + " " + countryName;

        } catch (IOException e) {
            e.printStackTrace();
        }


        Geocoder geocoder1 = new Geocoder(this, Locale.getDefault());
        List<Address> addresses1 = null;
        try {
            addresses1 = geocoder1.getFromLocation(d3, d4, 1);
            String cityName = addresses1.get(0).getAddressLine(0);
            String stateName = addresses1.get(0).getAddressLine(1);
            String countryName = addresses1.get(0).getAddressLine(2);

            lat2.setText("To: "+"\n"+cityName + " " + stateName + " " + countryName);
            end=cityName + " " + stateName + " " + countryName;
        } catch (IOException e) {
            e.printStackTrace();
        }

        Button fareEstimate_confirm= (Button) findViewById(R.id.fareEstimate_Confirm);

        fareEstimate_confirm.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                location.setLatitude(d1);
                location.setLongitude(d2);
                destination.setLatitude(d3);
                destination.setLongitude(d4);

                double distance = location.distanceTo(destination);

                double base = 3;
                double calc = base * distance;
                NumberFormat nf = NumberFormat.getInstance(); // get instance
                nf.setMaximumFractionDigits(2); // set decimal places
                String s = nf.format(calc);
                try {
                    TextView tv = (TextView) findViewById(R.id.price_confirm_tv);
                    tv.setText("Cost :"+"\n"+s.charAt(0)+ s.charAt(1) +s.charAt(2)+s.charAt(3)+s.charAt(4)+" EGP");
                    cost=tv.getText().toString();
                }catch (Exception e){

                }
            }
        });
    }

    public void confirmBtn_m (View view)
    {
        // Calculate Date&Time
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd\nHH:mm");
        String currentDateandTime = sdf.format(new Date());

        // Calculate Cost
        location.setLatitude(locationLatMap);
        location.setLongitude(locationLongMap);
        destination.setLatitude(destinationLatMap);
        destination.setLongitude(destinationLongMap);

        double distance = location.distanceTo(destination);

        double base = 2;
        double calc = base * distance;
        NumberFormat nf = NumberFormat.getInstance(); // get instance
        nf.setMaximumFractionDigits(2); // set decimal places
        String s = nf.format(calc);

        try {
            cost=s.charAt(0) + "" + s.charAt(1) +" EGP";
        }catch (Exception e){

        }

        // Creating New Trip
        ParseGeoPoint location=new ParseGeoPoint(locationLatMap,locationLongMap);

        final ParseObject trip= new ParseObject("Trip");

        trip.put("source",start);
        trip.put("destinations",end);
        trip.put("cost",cost);
        trip.put("date",currentDateandTime);
        trip.put("status","Requesting");
        trip.put("location",location);
        //trip.put("sLat",locationLatMap);
        //trip.put("sLong",locationLongMap);
        trip.put("eLat",destinationLatMap);
        trip.put("eLong",destinationLongMap);


        ParseRelation<ParseUser> tripUser=trip.getRelation("user");
        tripUser.add(ParseUser.getCurrentUser());


        trip.saveInBackground(new SaveCallback() {
            @Override
            public void done(ParseException e) {
                if (e==null)
                {
                    Toast.makeText(Confirmation.this, "Request Successful !!\n Wait To Response ", Toast.LENGTH_SHORT).show();
                    Intent intent=new Intent(Confirmation.this,Requesting.class);

                    Bundle bundle = new Bundle();
                    bundle.putString("objectId",trip.getObjectId());
                    bundle.putDouble("d1",locationLatMap);
                    bundle.putDouble("d2",locationLongMap);
                    intent.putExtras(bundle);

                    startActivity(intent);
                }
                else {
                    Toast.makeText(Confirmation.this, "Requesting Failed !!", Toast.LENGTH_SHORT).show();
                }
            }
        });
    }


    @Override
    public void onMapReady(GoogleMap googleMap) {


        requestDirection();
    }

    public void requestDirection() {

        GoogleDirection.withServerKey(serverKey)
                .from(locationAPI)
                .to(DestinationAPI)
                .transportMode(TransportMode.DRIVING)
                .execute(this);
    }


    @Override
    public void onDirectionSuccess(Direction direction, String rawBody) {
        mMap.addMarker(new MarkerOptions().position(locationAPI));
        mMap.addMarker(new MarkerOptions().position(DestinationAPI));


        ArrayList<LatLng> directionPositionList = direction.getRouteList().get(0).getLegList().get(0).getDirectionPoint();
        mMap.addPolyline(DirectionConverter.createPolyline(this, directionPositionList, 5, Color.DKGRAY));

    }

    @Override
    public void onDirectionFailure(Throwable t) {

    }
}