SKRouteManager.getInstance().calculateRoute(route);在 SKMaps SDK 2.4 中返回空指针异常

Posted 2023-03-05

【中文标题】SKRouteManager.getInstance().calculateRoute(route);在 SKMaps SDK 2.4 中返回空指针异常

【英文标题】：SKRouteManager.getInstance().calculateRoute(route); return nullpointer exception in SKMaps SDK 2.4

【发布时间】：2015-05-02 20:12:32

【问题描述】：

我能够初始化 SKMaps 并在我的 MapsActivity 中显示地图。 问题是我的应用程序在尝试计算路线时会因空指针异常而崩溃。

现在代码通过点击地图设置了 Advisorsettings，这仅用于测试目的，因为我想确保它在计算路线之前设置这些设置，通过双击启动也是测试目的。

我读到 Skobbler SDK 2.4 有这方面的问题，必须设置 advisorSettings 才能使其正常工作，但这对我没有帮助。

知道为什么 launchRouteCalculation() 会崩溃吗？ 我应该直接恢复到 SDK 2.3 还是有修复方法？

澄清：SKRouteManager.getInstance().calculateRoute(route);让它崩溃。

    public class MapsActivity extends Activity implements SKMapSurfaceListener, SKRouteListener 

/**
 * Surface view for displaying the map
 */
private SKMapSurfaceView mapView;



@Override
protected void onCreate(Bundle savedInstanceState) 

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_maps);
    SKMapViewHolder mapHolder = (SKMapViewHolder)
            findViewById(R.id.map_surface_holder);
    mapView = mapHolder.getMapSurfaceView();
    mapView.setMapSurfaceListener(this);
    SKRouteManager.getInstance().setRouteListener(MapsActivity.this);
    Toast.makeText(getApplicationContext(), "Loading Map...", Toast.LENGTH_SHORT).show();
    mapView.getMapSettings().setCurrentPositionShown(true);
    mapView.setZoom(20);
   /*
    Button navBtn = (Button)findViewById(R.id.navBtn);
    navBtn.setOnClickListener(new View.OnClickListener() 
        @Override
        public void onClick(View v) 
            Toast.makeText(getApplicationContext(), "You clicked the button...", Toast.LENGTH_SHORT).show();
        
    );
    */



@Override
protected void onPause() 
    super.onPause();
    mapView.onPause();


@Override
protected void onResume() 
    super.onResume();
    mapView.onResume();



@Override
public void onActionPan() 



@Override
public void onActionZoom() 



@Override
public void onSurfaceCreated() 
    //System.out.print("Surface created");
    Toast.makeText(getApplicationContext(), "Map loaded! Yeey!", Toast.LENGTH_SHORT).show();



@Override
public void onScreenOrientationChanged() 



@Override
public void onMapRegionChanged(SKCoordinateRegion skCoordinateRegion) 



@Override
public void onMapRegionChangeStarted(SKCoordinateRegion skCoordinateRegion) 



@Override
public void onMapRegionChangeEnded(SKCoordinateRegion skCoordinateRegion) 



@Override
public void onDoubleTap(SKScreenPoint skScreenPoint) 

    launchRouteCalculation();
    


@Override
public void onSingleTap(SKScreenPoint skScreenPoint) 
    String mapResDirPath;
    File externalDir = getExternalFilesDir(null);

    // determine path where map resources are

    if (externalDir != null) 
        mapResDirPath = externalDir + "/SKMaps/";
     else 
        mapResDirPath = getFilesDir() + "/SKMaps/";
    

    final SKAdvisorSettings advisorSettings = new SKAdvisorSettings();
    advisorSettings.setLanguage(SKAdvisorSettings.SKAdvisorLanguage.LANGUAGE_EN);
    advisorSettings.setAdvisorConfigPath(mapResDirPath + "/SKMaps/Advisor/");
    advisorSettings.setResourcePath(mapResDirPath + "/SKMaps/Advisor/Languages/");
    advisorSettings.setAdvisorVoice("en");
    advisorSettings.setAdvisorType(SKAdvisorSettings.SKAdvisorType.AUDIO_FILES);
    SKRouteManager.getInstance().setAudioAdvisorSettings(advisorSettings);
    Toast.makeText(getApplicationContext(),advisorSettings.getAdvisorVoice(), Toast.LENGTH_SHORT).show();
//Toast.makeText(getApplicationContext(), "You clicked the map! Yeey!", Toast.LENGTH_SHORT).show();


@Override
public void onRotateMap() 



@Override
public void onLongPress(SKScreenPoint skScreenPoint) 



@Override
public void onInternetConnectionNeeded() 



@Override
public void onMapActionDown(SKScreenPoint skScreenPoint) 



@Override
public void onMapActionUp(SKScreenPoint skScreenPoint) 



@Override
public void onPOIClusterSelected(SKPOICluster skpoiCluster) 



@Override
public void onMapPOISelected(SKMapPOI skMapPOI) 



@Override
public void onAnnotationSelected(SKAnnotation skAnnotation) 



@Override
public void onCustomPOISelected(SKMapCustomPOI skMapCustomPOI) 



@Override
public void onCompassSelected() 



@Override
public void onCurrentPositionSelected() 



@Override
public void onObjectSelected(int i) 



@Override
public void onInternationalisationCalled(int i) 



@Override
public void onBoundingBoxImageRendered(int i) 



@Override
public void onGLInitializationError(String s) 



public void launchRouteCalculation() 
    // get a route settings object and populate it with the desired properties
    SKRouteSettings route = new SKRouteSettings();
    // set start and destination points
    route.setStartCoordinate(new SKCoordinate(57.708266, 11.935341));
    route.setDestinationCoordinate(new SKCoordinate(57.715098, 11.945383));
    // set the number of routes to be calculated
    route.setNoOfRoutes(1);
    // set the route mode
    route.setRouteMode(SKRouteSettings.SKRouteMode.CAR_FASTEST);
    // set whether the route should be shown on the map after it's computed
    route.setRouteExposed(true);
    // set the route listener to be notified of route calculation
    // events
    SKRouteManager.getInstance().setRouteListener(this);
    // pass the route to the calculation routine
    SKRouteManager.getInstance().calculateRoute(route);




@Override
public void onRouteCalculationCompleted(SKRouteInfo skRouteInfo) 



@Override
public void onRouteCalculationFailed(SKRoutingErrorCode skRoutingErrorCode) 



@Override
public void onAllRoutesCompleted() 



@Override
public void onServerLikeRouteCalculationCompleted(SKRouteJsonAnswer skRouteJsonAnswer) 



@Override
public void onOnlineRouteComputationHanging(int i) 

【参考方案1】：

对于 2.4，解决方法是使用 SKRouteManager.getInstance().getAdviceList()。设置 advisorSettings 并让 SKMaps.zip 中的 Advisor 文件夹（带有所需的配置文件）。 在 2.5 中，您将可以删除 advisorSettings 并且应用不会再崩溃。