iOS_城市定位

標籤：

技術點-利用CoreLoaction架構，實現城市定位功能。

原理：

利用蘋果官方提供的CoreLocation架構實現城市定位的功能；

該架構主要包括兩個比較有用的類：定位類CLLocationManager、地理編碼類ClGeoCoder。

代碼：

 

 1 //  Copyright © 2016年 劉勇虎. All rights reserved. 2 // 3  4 #import "ViewController.h" 5 #import <CoreLocation/CoreLocation.h> 6  7 @interface ViewController ()<CLLocationManagerDelegate> 8 @property(strong,nonatomic)CLLocationManager *locationMananger; 9 @property(strong,nonatomic)CLLocation *startPoint;10 @property(strong,nonatomic)CLGeocoder *geoCode;11 @property (weak, nonatomic) IBOutlet UILabel *cityName;12 13 @end14 15 @implementation ViewController16 //    開始定位17 - (IBAction)startLocationing:(UIButton *)sender {18         [_locationMananger startUpdatingLocation];19 }20 21 - (void)viewDidLoad {22     [super viewDidLoad];23     // Do any additional setup after loading the view, typically from a nib.24     25     26     _geoCode = [[CLGeocoder alloc]init];27     self.locationMananger = [[CLLocationManager alloc]init];28     _locationMananger.delegate = self;29     _locationMananger.desiredAccuracy = kCLLocationAccuracyBest;30     //    向系統申請許可權31     [_locationMananger requestWhenInUseAuthorization];32 33     34 }35 36 #pragma mark -- location delegate --37 //更新定位38 - (void)locationManager:(CLLocationManager *)manager39     didUpdateToLocation:(CLLocation *)newLocation40            fromLocation:(CLLocation *)oldLocation {41     42 //    反地理編碼43 [_geoCode reverseGeocodeLocation:newLocation completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {44     if (placemarks && placemarks.count > 0) {45         46         CLPlacemark *newPlaceMark = [placemarks firstObject];47         _cityName.text = newPlaceMark.locality;48         [_locationMananger stopUpdatingLocation];49     }50 }];51 }52 //定位失敗後回調53 -(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{54     NSLog(@"error == %@",error);55 }

修改info.Plist檔案配置：

 

iOS_城市定位