Use of the IOS8 map

In IOS8, if you use the system's own map, first add two fields to the plist file: Nslocationalwaysusagedescription and Nslocationwheninuseusagedescription Type is string type second note: supported interface orientations If there is no existence then create (array type);

Use the map to first introduce the necessary agent after the Mapkit library <CLLocationManagerDelegate>

@interface Viewcontroller () <CLLocationManagerDelegate> @property (nonatomic, strong) Mkmapview *mapview;@ Property (Nonatomic, Strong) Cllocationmanager *locationmanager; @property (nonatomic, strong) Cllocation *namelocation ; @end

　　

To create a map:

Self.mapview = [[Mkmapview alloc] Initwithframe:cgrectmake (0,, Self.view.frame.size.width, self.view.frame.size.height-140)];        Self.mapView.showsUserLocation = YES; Navigate to your location    //self.mapview.maptype = mkmaptypesatellite;//Map Type Here is the satellite specific map type See API        [Self.view addsubview: Self.mapview];        Self.locationmanager = [[Cllocationmanager alloc] init];    Self.locationManager.delegate = self;    _locationmanager.desiredaccuracy = Kcllocationaccuracybest; Control the positioning accuracy, the higher the power consumption of the greater.        _locationmanager.distancefilter = 10;//Control location Service Update frequency. Unit is "M"
[Self.locationmanager startupdatinglocation];

　　

In IOS8, you may not be able to pop up a alertview that allows you to use geolocation.

if ([_locationmanager respondstoselector: @selector (requestwheninuseauthorization)]) {[_locationmanager RequestWhen   Inuseauthorization]; }//determine if the service is on-(void) Locationmanager: (Cllocationmanager *) Manager Didchangeauthorizationstatus: ( Clauthorizationstatus) Status {if ([_locationmanager respondstoselector: @selector (Requestwheninuseauthoriz ation)] && status! = kclauthorizationstatusnotdetermined && Status! =        Kclauthorizationstatusauthorizedwheninuse) | | (! [_locationmanager respondstoselector: @selector (requestwheninuseauthorization)] && Status! = kclauthorizationstatusnotdetermined && status = kclauthorizationstatusauthorized)) {Nsstr        ing *message = @ "Your phone is not currently open for location services, if you want to open Location services, please set the location service function"; Uialertview *alertview = [[Uialertview alloc] initwithtitle:@ "Cannot locate" Message:message delegate:nil cancelbuttontitle:@ "        Determine "Otherbuttontitles:nil";            [Alertview show]; }else {[_locatioNmanager Startupdatinglocation]; }}

　　

Create a PIN class: customannotation inherits from NSObject

  customannotation.h//  map////  Created by Gao Qi on 15/4/6.//  Copyright (c) 2015 Gaoqi. All rights reserved.//#import <Foundation/Foundation.h> #import <MapKit/MapKit.h> @interface customannotation:nsobject<mkannotation>{    cllocationcoordinate2d coordinate;    NSString *title;    NSString *subtitle;} -(ID) initwithcoordinate: (cllocationcoordinate2d) coords; @property (nonatomic, ReadOnly) cllocationcoordinate2d coordinate; @property (nonatomic, copy) NSString *title; @property (nonatomic, copy) NSString *subtitle; @end

　　

  customannotation.m//  map////  Created by Gao Qi on 15/4/6.//  Copyright (c) 2015 Gaoqi. All rights reserved.//#import "CustomAnnotation.h" @implementation customannotation@synthesize coordinate, title, subtitle;-(ID) initwithcoordinate: (cllocationcoordinate2d) coords{    if (self = [super init]) {        coordinate = coords;    }    return self;} @end

　　

Add pin-(void) Createannotationwithcoords: (cllocationcoordinate2d) coords {customannotation *annotation = [[   Customannotation alloc] initwithcoordinate:coords];    Click on the pin to get the specific street address via self.namelocation clgeocoder *clgeocoder = [[Clgeocoder alloc] init];                [Clgeocoder reverseGeocodeLocation:self.nameLocation Completionhandler: ^ (nsarray *placemarks,nserror *error) {                        For (Clplacemark *placemark in placemarks) {nsdictionary *addressdic=placemark.addressdictionary;            NSString *state=[addressdic objectforkey:@ "state"];            NSString *city=[addressdic objectforkey:@ "City"];            NSString *sublocality=[addressdic objectforkey:@ "sublocality"];                        NSString *street=[addressdic objectforkey:@ "Street"]; Annotation.title = [NSString stringwithformat:@ "%@%@%@%@", state, City, Sublocality, Street];            Click the pin to get the specific street address}}]; [Self.mapviewAddannotation:annotation];} 

　　

The next step is to locate

By the city name with a pin positioning, which is through a button and a TextField (Self.text) to search the following is the button click Method is actually positioned in place of the pin (can only be located in the country)-(void)    buttonclick{//PIN located in the Forbidden City//cllocationcoordinate2d coords = Cllocationcoordinate2dmake (39.915352,116.397105);// float Zoomlevel = 0.02;//mkcoordinateregion region = Mkcoordinateregionmake (coords, Mkcoordinatespanmake (ZoomLevel, Zo Omlevel));//[Self.mapview Setregion:[self.mapview regionthatfits:region] animated:yes];//////[Self CreateA        Nnotationwithcoords:coords];    Get geolocation by name and pin position Clgeocoder *mygeocoder = [[Clgeocoder alloc] init]; [Mygeocoder geocodeAddressString:self.text.text completionhandler:^ (Nsarray *placemarks, Nserror *error) {if ([Placemarks count] > 0 && error = = nil) {//NSLog (@ "Found%lu placemark (s).", (U            nsigned long) [Placemarks Count]);            Clplacemark *firstplacemark = [Placemarks objectatindex:0]; NSLog (@ "longitude =%f", FirstPlacemark.location.coordinate.lonGitude);                        NSLog (@ "Latitude =%f", firstPlacemark.location.coordinate.latitude); Geographic information (province, city, district, Street) is sent back to the pin by latitude where then the pin is positioned self.namelocation = [[Cllocation alloc] Initwithlatitude:firstplacema                        Rk.location.coordinate.latitude Longitude:firstPlacemark.location.coordinate.longitude];            P.S. This place, I don't know if it's right. (Click the Search button will buffer for a period of time the problem is not the location problem network slow?) Dispatch_async (Dispatch_get_global_queue (dispatch_queue_priority_default, 0), ^{cllocationcoordinate2d COO RDS = Cllocationcoordinate2dmake (FirstPlacemark.location.coordinate.latitude,                FirstPlacemark.location.coordinate.longitude);               float zoomlevel = 0.02;                Mkcoordinateregion region = Mkcoordinateregionmake (coords, Mkcoordinatespanmake (Zoomlevel, zoomlevel)); [Self.mapview Setregion:[self.mapview regionthatfits:region] animated:yes]; Move to location Dispatch_async (dispatch_get_mAin_queue (), ^{[self createannotationwithcoords:coords];                                            });                    });        } else if ([placemarks count] = = 0 && Error = = nil) {NSLog (@ "Found no placemarks.");        } else if (Error! = nil) {NSLog (@ "An error occurred =%@", error); }    }];}

　　

There are proxy methods and things like that.

-(void) Locationmanager: (Cllocationmanager *) Manager didupdatetolocation: ( Cllocation *) newlocation fromlocation: (cllocation *) oldlocation {//proxy method print latitude and longitude [Self.locationmanager stopupdatingloc        Ation];    NSString *strlat = [NSString stringwithformat:@ "%.4f", NewLocation.coordinate.latitude];    NSString *strlng = [NSString stringwithformat:@ "%.4f", NewLocation.coordinate.longitude];        NSLog (@ "Lat:%@ Lng:%@", Strlat, STRLNG); The map moves to the current position cllocationcoordinate2d coords = Cllocationcoordinate2dmake (newlocation.coordinate.latitude,newlocation    . coordinate.longitude);    float zoomlevel = 0.02;    Mkcoordinateregion region = Mkcoordinateregionmake (Coords,mkcoordinatespanmake (Zoomlevel, zoomLevel));        [Self.mapview Setregion:[self.mapview regionthatfits:region] animated:yes]; }//Error Report-(void) Locationmanager: (Cllocationmanager *) Manager didfailwitherror: (nserror *) error {NSLog (@ "locerror:%@")    , error); }

　　

Use of the IOS8 map