Plotting System map routes

#import "ViewController.h" #import <MapKit/MapKit.h> #import <CoreLocation/CoreLocation.h> @interface Viewcontroller ()/** geocoding */@property (nonatomic, strong) Clgeocoder *GEOC; @end @implementation Viewcontroller#pragma    Mark-Lazy Loading-(Clgeocoder *) geoc{if (!_GEOC) {_GEOC = [[Clgeocoder alloc] init]; } return _GEOC;} -(void) Touchesbegan: (Nsset<uitouch *> *) touches withevent: (uievent *) event{[SELF.GEOC geocodeaddressstring:@]       Guangzhou "completionhandler:^ (Nsarray<clplacemark *> * _nullable placemarks, Nserror * _nullable error) {//Guangzhou landmark       Clplacemark *GZPL = [Placemarks firstobject]; [SELF.GEOC geocodeaddressstring:@ "Shanghai" completionhandler:^ (Nsarray<clplacemark *> * _Nullable Placemarks,                      Nserror * _nullable error) {//Shanghai landmark Clplacemark *SHPL = [Placemarks firstobject];                             [Self systemnavwithbeginpl:gzpl ENDPL:SHPL];                 }];               }]; }/** * Based on the origin and destination landmarksLike, call the system app to navigate * * @param BEGINCLPL starting point landmark * @param ENDCLPL endpoint landmark */-(void) SYSTEMNAVWITHBEGINPL: (Clplacemark *) BEGINCLPL E NDPL: (Clplacemark *) endclpl{//Call system app to navigate//Map Origin Landmark object Mkplacemark *BEGINPL = [[Mkplacemark alloc] Initwithpl    ACEMARK:BEGINCLPL];        Starting point Mkmapitem *beginitem = [[Mkmapitem alloc] INITWITHPLACEMARK:BEGINPL];    Map end Landmark object Mkplacemark *ENDPL = [[Mkplacemark alloc] INITWITHPLACEMARK:ENDCLPL];            End Mkmapitem *enditem = [[Mkmapitem alloc] INITWITHPLACEMARK:ENDPL];        Starting and ending arrays nsarray *items = @[beginitem, Enditem]; Set map Startup items (Navigation mode: driving, Map type: mixed, whether to show traffic: YES) nsdictionary *dic = @{Mklaunchoptionsdirectionsmodek                          Ey:mklaunchoptionsdirectionsmodedriving, Mklaunchoptionsmaptypekey: @ (Mkmaptypehybrid),        Mklaunchoptionsshowstraffickey: @ (YES),}; Given two points, starting point and end point, then set the startup item and start calling the system app to navigate [MkmaPitem openmapswithitems:items launchoptions:dic];} @end

　　

Plotting System map routes