How to display multiple navigation routes on a map

How to display multiple navigation routes on a map

Case study: How many road maps are there when driving a car to Baidu building in Tiananmen District, Beijing?

Package COM. android. android_baidu_mystranit; import COM. baidu. mapapi. bmapmanager; import COM. baidu. mapapi. geopoint; import COM. baidu. mapapi. mkaddrinfo; import COM. baidu. mapapi. mkbuslineresult; import COM. baidu. mapapi. mkdrivingrouteresult; import COM. baidu. mapapi. mkgenerallistener; import COM. baidu. mapapi. mkplannode; import COM. baidu. mapapi. mkpoiresult; import COM. baidu. mapapi. mksearch; import COM. baidu. mapap I. mksearchlistener; import COM. baidu. mapapi. mksuggestionresult; import COM. baidu. mapapi. mktransitrouteresult; import COM. baidu. mapapi. mkwalkingrouteresult; import COM. baidu. mapapi. mapactivity; import COM. baidu. mapapi. mapview; import COM. baidu. mapapi. transitoverlay; import android. OS. bundle; import android. widget. toast; public class mainactivity extends mapactivity {// Add the control private mapview related to Baidu map; // The engine for loading the map is private bmapmanager. // The key private string keystring = "8c426377b3526b6bf3672c9ba3bb544d1e8289cd" of Baidu map "; // Private mksearch is used for location search, peripheral search, range search, public transport search, driving and walking search. // you can specify a start point, private mkplannode start, and private mkplannode end; @ override public void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. main); mapview = (mapview) This. findviewbyid (R. id. bmapview); bmapmanager = new bmapmanager (mainactivity. this); // The Key bmapmanager must be loaded. init (keystring, new mkgenerallistener () {public void ongetpermissionstate (INT arg0) {} public void ongetnetworkstate (INT arg0) {If (arg0 = 300) {toast. maketext (mainactivity. this, "The entered key is incorrect. Please verify it !! ", 1 ). show () ;}}); this. initmapactivity (bmapmanager); // The Query Class mksearch = new mksearch (); mksearch. init (bmapmanager, new mysearchlistener (); // create a coordinate for the start point: Start = new mkplannode (); start.pt = new geopoint (INT) (39.915*1e6 ), (INT) (116.404*1e6); End = new mkplannode (); end.pt = new geopoint (40057031,2017307852); mksearch. transitsearch ("Beijing", start, end);} public class mysearchlistener implements Mksearchlistener {public void ongetaddrresult (mkaddrinfo arg0, int arg1) {// todo auto-generated method stub} public void ongetbusdetailresult (mkbuslineresult arg0, int arg1) {// todo auto-generated method stub} public void initialize (mkdrivingrouteresult arg0, int arg1) {// todo auto-generated method stub} public void ongetpoiresult (mkpoiresult result, int type, int ierror ){ // Todo auto-generated method stub} public void ongetrgc1_urlresult (string arg0, int arg1) {// todo auto-generated method stub} public void initialize (mksuggestionresult arg0, int arg1) {// todo auto-generated method stub} public void ongettransitrouteresult (mktransitrouteresult arg0, int arg1) {// todo auto-generated method stub if (arg0 = NULL) {return ;} int plannum = arg0.ge Tnumplan (); // obtain all the driving routes for (INT I = 0; I <plannum; I ++) {transitoverlay overlay = new transitoverlay (mainactivity. this, mapview); overlay. setdata (arg0.getplan (I); mapview. getoverlays (). add (overlay);} mapview. invalidate (); // refresh the map mapview. getcontroller (). animateto (arg0.getstart (). pt);} public void ongetwalkingrouteresult (mkwalkingrouteresult arg0, int arg1) {// todo auto-generated method stub} @ o Verride protected void ondestroy () {super. ondestroy (); If (bmapmanager! = NULL) {bmapmanager. Destroy (); bmapmanager = NULL ;}@override protected void onresume () {super. onresume (); If (bmapmanager! = NULL) {bmapmanager. Start () ;}@ override protected void onpause () {super. onpause (); If (bmapmanager! = NULL) {bmapmanager. Stop () ;}@ override protected Boolean isroutedisplayed () {return false ;}}