iOS Learning _ map positioning and encoding and anti-coding

Positioning:

Introducing Header Files #import <CoreLocation/CoreLocation.h>
Claim Manager Properties:@property (Nonatomic,strong) Cllocationmanager *manager;
First step: Initialize the manager
Self.manager = [[Cllocationmanager alloc] init];
Step two: Make privacy judgments and authorize

//make a judgment of privacy    if(![Cllocationmanager locationservicesenabled]) {NSLog (@"whether to go to privacy settings, allow targeting"); }    //make a version of the Judgment    if([[[[Uidevice Currentdevice] systemversion] IntegerValue] >=8.0) {        //Determine authorization status        if([Cllocationmanager authorizationstatus]!=kclauthorizationstatusauthorizedwheninuse) {            //Request Authorization[Self.manager requestwheninuseauthorization]; }    }

You need to set what is allowed to be located in Inforplist before authorizing the request: Put Nslocationwheninuseusagedescription (Nslocationalwaysusagedescription this is another way) Enter into the inforplist, and then enter a sentence behind it;

Step three: Set agent and properties for manager

Self.manager. delegate = self;

Fourth step: Turn on positioning

    [Self.manager startupdatinglocation];

Implementing Proxy methods

//the proxy method is to start updating the location information after the positioning is successful, as long as the minimum distance of the moved setting starts to go this way;- (void) Locationmanager: (Cllocationmanager *) Manager didupdatelocations: (nsarray<cllocation *> *) locations{//get the last positionCllocation *location =Locations.lastobject; //gets the coordinates of the positioncllocationcoordinate2d coordinate =location.coordinate; NSLog (@"Longitude:%f, Latitude:%f, Elevation:%f, direction of navigation:%f, walking speed:%f", Coordinate.longitude,coordinate.latitude,location.altitude,location.course,location.speed); //in order to save power, if you do not use positioning, you need to turn off the positioning[Self.manager stopupdatinglocation];}//failed to locate- (void) Locationmanager: (Cllocationmanager *) Manager didfailwitherror: (Nserror *) error{NSLog (@"failed to locate");}

Coding and anti-coding

Declaration encoding and anti-coding class:@property (Nonatomic,strong) Clgeocoder *geocoder;

Initialize object:self.geocoder = [[Clgeocoder alloc] init];

Get relevant information according to the place name ( code )

- (void) Getcoordinatebyadress: (NSString *) address{//Encoding Method[Self.geocoder geocodeaddressstring:address completionhandler:^ (nsarray<clplacemark *> * _Nullable Placemarks, Nserror *_nullable Error) {        //based on the returned landmarks, take out the first one (many of the landmarks are located)Clplacemark *mark =Placemarks.firstobject; //get location based on landmark (Mark)Cllocation *location =mark.location; //get area according to MarkClregion *region =mark.region; //Get dictionary informationNsdictionary *addressdic =mark.addressdictionary; NSLog (@"Landmark location:%@, area%@, location information%@", Location,region,addressdic); /*//nsstring *name=placemark.name;//place name//NSString *thoroughfare =placemark.thoroughfare;//Street//NSString *subthoroughfare=placemark.subthoroughfare; Street-related information, such as house numbers, etc.//NSString *locality=placemark.locality; City//NSString *sublocality=placemark.sublocality; City-related information, such as iconic buildings//NSString *administrativearea=placemark.administrativearea; State//NSString *subadministrativearea=placemark.subadministrativearea; Other administrative area information//NSString *postalcode=placemark.postalcode; Postcode//NSString *isocountrycode=placemark. Isocountrycode; Country code//NSString *country=placemark.country; Country//NSString *inlandwater=placemark.inlandwater; Water source, lake//NSString *ocean=placemark.ocean; Ocean//Nsarray *areasofinterest=placemark.areasofinterest; Associated or interest-related landmarks */    }];}

Remove address ( anti-coding ) based on latitude and longitude anti-coding

-(void  ) Getadressbylongitude: ( cllocationdegrees) Longitude Latitude: (cllocationdegrees) latitude{ //  anti-coding  //     create cllocation  Cllocation *location = [[Cllocation alloc] Initwithlatitude:latitude Longitude:    Longitude]; [Self.geocoder reversegeocodelocation:location Completionhandler:  ^ (Nsarray<clplacemark *> * _Nullable Placemarks, Nserror * _nullable error) {nsdictionary  *dic = Placemarks.firstObject.addressDictionary; NSLog ( @ "  anti-coding geolocation information:%@   " ,dic); }];}

Calculate the distance between two points

-(void) distance{    // Create position one    cllocation *locationbeijing = [[Cllocation Alloc] Initwithlatitude: Longitude:[];     *locationdaliang = [[Cllocation alloc] Initwithlatitude: Longitude:121];     = [locationbeijing Distancefromlocation:locationdaliang];    NSLog (@ " distance from Beijing to Dalian:%f", Distance);}

iOS Learning _ map positioning and encoding and anti-coding