您的代码中存在一些错误，最大的错误是您仍在使用MapView时仍在获取位置信息Map@R_497_2419@Map。这是一些粗糙的代码，可以满足您的要求。它不会像您应该检查的那样检查用户权限，但会向您显示如何执行Map@R_497_2419@的操作。
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;
import com.map@R_497_2419@.map@R_497_2419@sdk.annotations.MarkerOptions;
import com.map@R_497_2419@.map@R_497_2419@sdk.annotations.PolylineOptions;
import com.map@R_497_2419@.map@R_497_2419@sdk.geometry.LatLng;
import com.map@R_497_2419@.map@R_497_2419@sdk.maps.MapView;
import com.map@R_497_2419@.map@R_497_2419@sdk.maps.Map@R_497_2419@Map;
import com.map@R_497_2419@.map@R_497_2419@sdk.maps.OnMapReadyCallback;
import com.map@R_497_2419@.services.Constants;
import com.map@R_497_2419@.services.android.geocoder.ui.GeocoderAutoCompleteView;
import com.map@R_497_2419@.services.commons.ServicesException;
import com.map@R_497_2419@.services.commons.geojson.LineString;
import com.map@R_497_2419@.services.commons.models.Position;
import com.map@R_497_2419@.services.directions.v5.DirectionsCriteria;
import com.map@R_497_2419@.services.directions.v5.Map@R_497_2419@Directions;
import com.map@R_497_2419@.services.directions.v5.models.DirectionsResponse;
import com.map@R_497_2419@.services.directions.v5.models.DirectionsRoute;
import com.map@R_497_2419@.services.geocoding.v5.GeocodingCriteria;
import com.map@R_497_2419@.services.geocoding.v5.models.GeocodingFeature;
import java.util.List;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
public class MainActivity extends Activity {
private final static String TAG = "MainActivity";
private MapView mapView;
private Map@R_497_2419@Map map;
private DirectionsRoute currentRoute;
private Position origin;
private Position destination;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Setup the MapView
mapView = (MapView) findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(Map@R_497_2419@Map map@R_497_2419@Map) {
map = map@R_497_2419@Map;
map@R_497_2419@Map.setMyLocationEnabled(true);
// Set up autocomplete widget
GeocoderAutoCompleteView autocomplete = (GeocoderAutoCompleteView) findViewById(R.id.query);
autocomplete.setAccessToken("<your access token>");
autocomplete.setType(GeocodingCriteria.TYPE_POI);
autocomplete.setOnFeatureListener(new GeocoderAutoCompleteView.OnFeatureListener() {
@Override
public void OnFeatureClick(GeocodingFeature feature) {
if(map.getMyLocation() != null) {
// Set the origin as user location only if we can get their location
origin = Position.fromCoordinates(map.getMyLocation().getLongitude(), map.getMyLocation().getLatitude());
}else{
return;
}
destination = feature.asPosition();
// Add origin and destination to the map
map.addMarker(new MarkerOptions()
.position(new LatLng(origin.getLatitude(), origin.getLongitude())));
map.addMarker(new MarkerOptions()
.position(new LatLng(destination.getLatitude(), destination.getLongitude())));
// Get route from API
try {
getRoute(origin, destination);
} catch (ServicesException e) {
e.printStackTrace();
}
}
});
}
});
}
private void getRoute(Position origin, Position destination) throws ServicesException {
Map@R_497_2419@Directions client = new Map@R_497_2419@Directions.Builder()
.setOrigin(origin)
.setDestination(destination)
.setProfile(DirectionsCriteria.PROFILE_CYCLING)
.setAccessToken("<your access token>")
.build();
client.enqueueCall(new Callback<DirectionsResponse>() {
@Override
public void onResponse(Call<DirectionsResponse> call, Response<DirectionsResponse> response) {
// You can get the generic HTTP info about the response
Log.d(TAG, "Response code: " + response.code());
if (response.body() == null) {
Log.e(TAG, "No routes found, make sure you set the right user and access token.");
return;
}
// Print some info about the route
currentRoute = response.body().getRoutes().get(0);
Log.d(TAG, "Distance: " + currentRoute.getDistance());
Toast.makeText(MainActivity.this, "Route is " + currentRoute.getDistance() + " meters long.", Toast.LENGTH_SHORT).show();
// Draw the route on the map
drawRoute(currentRoute);
}
@Override
public void onFailure(Call<DirectionsResponse> call, Throwable t) {
Log.e(TAG, "Error: " + t.getMessage());
Toast.makeText(MainActivity.this, "Error: " + t.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
private void drawRoute(DirectionsRoute route) {
// Convert LineString coordinates into LatLng[]
LineString lineString = LineString.fromPolyline(route.getGeometry(), Constants.OSRM_PRECISION_V5);
List<Position> coordinates = lineString.getCoordinates();
LatLng[] points = new LatLng[coordinates.size()];
for (int i = 0; i < coordinates.size(); i++) {
points[i] = new LatLng(
coordinates.get(i).getLatitude(),
coordinates.get(i).getLongitude());
}
// Draw Points on MapView
map.addPolyline(new PolylineOptions()
.add(points)
.color(Color.parseColor("#009688"))
.width(5));
}
@Override
public void onResume() {
super.onResume();
mapView.onResume();
}
@Override
public void onPause() {
super.onPause();
mapView.onPause();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
@Override
protected void onDestroy() {
super.onDestroy();
mapView.onDestroy();
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
希望这可以帮助！
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