arcgis for android 开发的导航的部分 请专家们过来指点一二啊~
16lz
2021-01-22
finalHandlermHandler=newHandler();
finalRunnablemUpdateResults=newRunnable(){
publicvoidrun(){
updateUI();
}
};
//Progressdialogtoshowwhenrouteisbeingcalculated
ProgressDialogdialog;
//Spatialreferencesusedforprojectingpoints
finalSpatialReferencewm=SpatialReference.create(3857);
finalSpatialReferenceegs=SpatialReference.create(4326);
//Indexofthecurrentlyselectedroutesegment(-1=noselection)
intselectedSegmentID=-1;
/**Calledwhentheactivityisfirstcreated.*/
@Override
publicvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//RetrievethemapandinitialextentfromXMLlayout
map=(MapView)findViewById(R.id.map);
//AddtiledlayertoMapView
tileLayer=newArcGISTiledMapServiceLayer("http://192.168.183.232:8399/arcgis/rest/services/test1/MapServer");
map.addLayer(tileLayer);
//Addtheroutegraphiclayer(showsthefullroute)
routeLayer=newGraphicsLayer();
map.addLayer(routeLayer);
//InitializetheRouteTask
try{
mRouteTask=RouteTask.createOnlineRouteTask("http://192.168.183.232:8399/arcgis/rest/services/map/NAServer/route1",null);
}catch(Exceptione1){
e1.printStackTrace();
}
//Addthehiddensegmentslayer(forhighlightingroutesegments)
hiddenSegmentsLayer=newGraphicsLayer();
map.addLayer(hiddenSegmentsLayer);
//MakethesegmentHidersymbol"invisible"
segmentHider.setAlpha(1);
//Getthelocationserviceandstartreadinglocation.Don'tauto-pan
//tocenterourposition
LocationServicels=map.getLocationService();
ls.setLocationListener(newMyLocationListener());
ls.start();
ls.setAutoPan(false);
//SetthedirectionsLabelwithinitialinstructions.
directionsLabel=(TextView)findViewById(R.id.directionsLabel);
directionsLabel.setText(getString(R.string.route_label));
map.setOnSingleTapListener(newOnSingleTapListener(){
privatestaticfinallongserialVersionUID=1L;
publicvoidonSingleTap(floatx,floaty){
//Getallthegraphicswithin20pixelstheclick
int[]indexes=hiddenSegmentsLayer.getGraphicIDs(x,y,20);
//Hidethecurrentlyselectedsegment
hiddenSegmentsLayer.updateGraphic(selectedSegmentID,segmentHider);
if(indexes.length<1){
//Ifnosegmentswerefoundbutthereiscurrentlyaroute,
//zoomtotheextentofthefullroute
if(curRoute!=null){
map.setExtent(curRoute.getEnvelope(),100);
directionsLabel.setText(routeSummary);
}
return;
}
//Otherwiseupdateourcurrentlyselectedsegment
selectedSegmentID=indexes[0];
Graphicselected=hiddenSegmentsLayer.getGraphic(selectedSegmentID);
//Highlightitonthemap
hiddenSegmentsLayer.updateGraphic(selectedSegmentID,segmentShower);
Stringdirection=((String)selected.getAttributeValue("text"));
doubletime=((Double)selected.getAttributeValue("time"))
.doubleValue();
doublelength=((Double)selected.getAttributeValue("length"))
.doubleValue();
//Updatethelabelwiththisdirection'sinformation
Stringlabel=String.format("%s%nTime:%.1fminutes,Length:%.1fmiles",direction,time,length);
directionsLabel.setText(label);
//Zoomtotheextentofthatsegment
map.setExtent(selected.getGeometry(),10);
}
});
map.setOnLongPressListener(newOnLongPressListener(){
privatestaticfinallongserialVersionUID=1L;
publicbooleanonLongPress(finalfloatx,finalfloaty){
//Clearthegraphicsandemptythedirectionslist
routeLayer.removeAll();
hiddenSegmentsLayer.removeAll();
curDirections=newArrayList<String>();
mResults=null;
//retrievetheuserclickedlocation
finalPointloc=map.toMapPoint(x,y);
//Showthattherouteiscalculating
dialog=ProgressDialog.show(RoutingSample.this,"","Calculatingroute...",true);
//SpawntherequestoffinanewthreadtokeepUIresponsive
Threadt=newThread(){
@Override
publicvoidrun(){
try{
Pointlo=newPoint(13396558.7981066,3544132.501);
Pointlol=newPoint(13396551.649,3543855.669);
//Startbuildinguproutingparameters
RouteParametersrp=mRouteTask.retrieveDefaultRouteTaskParameters();
NAFeaturesAsFeaturerfaf=newNAFeaturesAsFeature();
//ConvertpointtoEGS(decimaldegrees)
//Pointp=(Point)GeometryEngine.project(loc,wm,egs); //3857->4326
//Pointp=(Point)GeometryEngine.project(loc,wm,wm); //4326->3857
//Createthestoppoints(startatourlocation,gotopressedlocation)
//Pointp1=(Point)GeometryEngine.project(lo,wm,wm);
//Pointp1=(Point)GeometryEngine.project(mLocation,egs,wm); //4326->3857
//StopGraphicpoint1=newStopGraphic(p1); //3857 13396558.7981066,3544132.501
StopGraphicpoint1=newStopGraphic(lo);
StopGraphicpoint2=newStopGraphic(lol);
rfaf.setFeatures(newGraphic[]{point1,point2});
rfaf.setCompressedRequest(true);
rp.setStops(rfaf); //routeParams.setStops(naFeatures);
//SettheroutingserviceoutputSRtoourmapservice's
rp.setOutSpatialReference(wm);
//SolvetherouteandusetheresultstoupdateUIwhenreceived
//mResults=mRouteTask.solve(rp);//xxxxxxxxxxxx
mResults=mRouteTask.solve(rp);
mHandler.post(mUpdateResults);
//mHandler.postAtFrontOfQueue(mUpdateResults);
//parserJson(mResults);
}catch(Exceptione){
mException=e;
mHandler.post(mUpdateResults);
}
}
};
//Starttheoperation
t.start();
returntrue;
}
});
}
/**
*UpdatestheUIafterasuccessfulrestresponsehasbeenreceived.
*/
voidupdateUI(){
dialog.dismiss();
if(mResults==null){
Toast.makeText(RoutingSample.this,mException.toString(),Toast.LENGTH_LONG).show();
return;
}
curRoute=mResults.getRoutes().get(0);
//Symbolsfortherouteandthedestination(blueline,checkerflag)
SimpleLineSymbolrouteSymbol=newSimpleLineSymbol(Color.BLUE,3);
PictureMarkerSymboldestinationSymbol=newPictureMarkerSymbol(
map.getContext(),getResources().getDrawable(R.drawable.flag_finish));
for(RouteDirectionrd:curRoute.getRoutingDirections()){
HashMap<String,Object>attribs=newHashMap<String,Object>();
attribs.put("text",rd.getText());
attribs.put("time",Double.valueOf(rd.getMinutes()));
attribs.put("length",Double.valueOf(rd.getLength()));
curDirections.add(String.format("%s%nTime:%.1fminutes,Length:%.1fmiles",rd.getText(),rd.getMinutes(),rd.getLength()));
GraphicrouteGraphic=newGraphic(rd.getGeometry(),segmentHider,attribs);
hiddenSegmentsLayer.addGraphic(routeGraphic);
}
//Resettheselectedsegment
selectedSegmentID=-1;
//AddthefullroutegraphicanddestinationgraphictotherouteLayer
GraphicrouteGraphic=newGraphic(curRoute.getRouteGraphic().getGeometry(),routeSymbol);
GraphicendGraphic=newGraphic(
((Polyline)routeGraphic.getGeometry()).getPoint(((Polyline)routeGraphic
.getGeometry()).getPointCount()-1),destinationSymbol);
routeLayer.addGraphics(newGraphic[]{routeGraphic,endGraphic});
//Getthefullroutesummaryandsetitasourcurrentlabel
routeSummary=String.format("%s%nTotaltime:%.1fminutes,length:%.1fmiles",curRoute.getRouteName(),curRoute.getTotalMinutes(),curRoute.getTotalMiles());
directionsLabel.setText(routeSummary);
//Zoomtotheextentoftheentireroutewithapadding
map.setExtent(curRoute.getEnvelope(),250);
}
@Override
protectedvoidonActivityResult(intrequestCode,intresultCode,Intentdata){
super.onActivityResult(requestCode,resultCode,data);
//Responsefromdirectionslistview
if(requestCode==1){
if(resultCode==RESULT_OK){
Stringdirection=data.getStringExtra("returnedDirection");
if(direction==null)
return;
//Lookforthegraphicthatcorrespondstothisdirection
for(intindex:hiddenSegmentsLayer.getGraphicIDs()){
Graphicg=hiddenSegmentsLayer.getGraphic(index);
if(direction.contains((String)g.getAttributeValue("text"))){
//Whenfound,hidethecurrentlyselected,showthenewselection
hiddenSegmentsLayer.updateGraphic(selectedSegmentID,segmentHider);
hiddenSegmentsLayer.updateGraphic(index,segmentShower);
selectedSegmentID=index;
//Updatelabelwithinformationforthatdirection
directionsLabel.setText(direction);
//Zoomtotheextentofthatsegment
map.setExtent(
hiddenSegmentsLayer.getGraphic(
selectedSegmentID).getGeometry(),50);
break;
}
}
}
}
}
privateclassMyLocationListenerimplementsLocationListener{
publicMyLocationListener(){
super();
}
/**
*Iflocationchanges,updateourcurrentlocation.Ifbeingfoundfor
*thefirsttime,zoomtoourcurrentpositionwitharesolutionof20
*/
publicvoidonLocationChanged(Locationloc){
if(loc==null)
return;
booleanzoomToMe=(mLocation==null)?true:false;
mLocation=newPoint(loc.getLongitude(),loc.getLatitude());//4326
if(zoomToMe){
Pointp=(Point)GeometryEngine.project(mLocation,egs,wm);//4326->3857
map.zoomToResolution(p,20.0);
}
}
}
错误的地方用xxxxxxxxxxxxxxxxxxxx标出了
提示错误信息是：org.codehaus.jackson.JsonParseException:Currenttoken(VALUE_STRING)notnumbericcannotusenumbericvalueaccessors
2 个解决方案
#1
提示信息已经很明确了啊，解析json的变量是string，不是数字字符，调试进去看看就知道了
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