iOS system navigation/self-drawing navigation routes

System comes with navigation

/** System comes with navigation current location navigate to destination 1. GeoCode by Destination 2. Encapsulates the current location and destination as a Mkmapitem object 3. Navigate using the Mkmapitem Openmapswithitems:launchoptions: Method */@interfaceViewcontroller ()//input box for destination@property (Weak, nonatomic) Iboutlet Uitextfield *Destinationfield;/** * Click on the button to start navigation*/-(ibaction) navigate;@end@implementationViewcontroller-(ibaction) Navigate {//1. Get the destination entered by the userNSString *destination =Self.destinationField.text; if(Destination.length = =0) {        return; }        //2. GeocodingClgeocoder *geocoder =[[Clgeocoder alloc] init]; [Geocoder geocodeaddressstring:destination Completionhandler:^ (Nsarray *placemarks, Nserror *error) {        if(Placemarks.count = =0|| Errorreturn ; //2.1. Take out geo-coded landmarksClplacemark *CLPM =[Placemarks Firstobject]; //2.2. Use Clplacemark to create MkplacemarkMkplacemark *MKPM =[[Mkplacemark alloc] INITWITHPLACEMARK:CLPM]; //2.3. Use Mkplacemark to create a destination MkmapitemMkmapitem *destinationitem =[[Mkmapitem alloc] initwithplacemark:mkpm]; //2.4. Get the Mkmapitem of the starting pointMkmapitem *sourceitem =[Mkmapitem mapitemforcurrentlocation]; //2.5. Start Navigation[self startnavigatewithsourceitem:sourceitem destinationitem:destinationitem]; }];}/** * Start navigation * * @param sourceitem Start Item * @param destinationitem end of item*/- (void) Startnavigatewithsourceitem: (Mkmapitem *) SourceItem Destinationitem: (Mkmapitem *) destinationitem{//1. Place the start and end item into the arrayNsarray *items =@[sourceitem, Destinationitem]; //2. Set options parameters (dictionary)//Mklaunchoptionsdirectionsmodekey: Navigation mode//mklaunchoptionsmaptypekey: Map Type//Mklaunchoptionsshowstraffickey: Whether to show traffic conditionsNsdictionary *options =@{mklaunchoptionsdirectionsmodekey:mklaunchoptionsdirectionsmodedriving, mklaunchoptionsmapt        Ypekey: @ (Mkmaptypehybrid), Mklaunchoptionsshowstraffickey: @YES}; //3. Start Navigation[Mkmapitem openmapswithitems:items launchoptions:options];}@end

Navigating a custom drawing route

#import "ViewController.h"#import<MapKit/MapKit.h>/** Draw route according to destination self-implementation 1. Encapsulates the current location and destination for the Mkmapitem object 2.MKDirectionsRequest object wrapper source address and purpose address 3. Mkdirections Object Calculatedirectionswithcompletionhandler: Method to draw 4. Use Mapview Addoverlay:polyline] to add the traversed line 6. Set Mapview agent, comply with protocol, and implement-(Mkoverlayrenderer *) Mapview: (Mkmapview *) Mapview rendererforoverlay: (Mkpolyline *) Overlay Method ( This method is executed when a mask is added to the Mapview to the map, and the drawing line is displayed correctly .*/@interfaceViewcontroller () <MKMapViewDelegate>//view of the map@property (Weak, nonatomic) Iboutlet Mkmapview *Mapview;//input box for destination@property (Weak, nonatomic) Iboutlet Uitextfield *Destinationfield;/** * Start drawing lines after clicking*/-(ibaction) drawLine;@end@implementationViewcontroller- (void) viewdidload{[Super Viewdidload]; Self.mapview.Delegate=Self ;}-(ibaction) drawLine {//0. Exit the keyboard[Self.view Endediting:yes]; //1. Get the destination entered by the userNSString *destination =Self.destinationField.text; if(Destination.length = =0) {        return; }        //2. GeocodingClgeocoder *geocoder =[[Clgeocoder alloc] init]; [Geocoder geocodeaddressstring:destination Completionhandler:^ (Nsarray *placemarks, Nserror *error) {        if(Placemarks.count = =0|| Errorreturn; //2.1. Get the Clplacemark objectClplacemark *CLPM =[Placemarks Firstobject]; //2.2. Use Clplacemark to create MkplacemarkMkplacemark *MKPM =[[Mkplacemark alloc] INITWITHPLACEMARK:CLPM]; //2.3. Create a Mkmapitem object for the destinationMkmapitem *destinationitem =[[Mkmapitem alloc] initwithplacemark:mkpm]; //2.4. Mkmapitem of the starting pointMkmapitem *sourceitem =[Mkmapitem mapitemforcurrentlocation]; //2.5. Start drawing lines[self drawlinewithsourceitem:sourceitem destinationitem:destinationitem]; }];}/** * Start Drawing line * * @param sourceitem Start Item * @param destinationitem end of item*/- (void) Drawlinewithsourceitem: (Mkmapitem *) SourceItem Destinationitem: (Mkmapitem *) destinationitem{//1. Create a Mkdirectionsrequest objectMkdirectionsrequest *request =[[Mkdirectionsrequest alloc] init]; //1.1. Set the start itemRequest.source =SourceItem; //1.2. Set the end itemRequest.destination =Destinationitem; //2. Create a Mkdirections objectMkdirections *directions =[[Mkdirections alloc] initwithrequest:request]; //3. Request/Calculate (the method will come when the route information is requested)[Directions calculatedirectionswithcompletionhandler:^ (Mkdirectionsresponse *response, NSError *error) {        //3.1. When there is an error, or the number of routes is 0 direct return        if(Error | | response.routes.count = =0)return; NSLog (@"%ld", Response.routes.count); //3.2. Traverse all the routes         for(Mkroute *routeinchresponse.routes) {//3.3. Remove route (follow Mkoverlay)Mkpolyline *polyline =Route.polyline; //3.4. Add a route to the map[Self.mapview Addoverlay:polyline]; }    }];}/** * When a mask is added to the map, the method is executed * * @param overlay Obey Mkoverlay * * * @return Draw line Rendering*/-(Mkoverlayrenderer *) Mapview: (Mkmapview *) Mapview rendererforoverlay: (Mkpolyline *) overlay{Mkpolylinerenderer*poly =[[Mkpolylinerenderer alloc] initwithpolyline:overlay]; Poly.strokecolor=[Uicolor Yellowcolor]; Poly.linewidth=5.0; returnPoly;}@end

iOS system navigation/self-drawing navigation routes