ios开发之 -- 调用系统定位获取当前经纬度与地理信息

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在info.plist中加入：

//允许在前台使用时获取GPS的描述

定位权限：Privacy - Location When In Use Usage Description

//允许永久使用GPS描述

定位权限: Privacy - Location Always Usage Description

如下图：

然后再添加framework包，如下图：

代码如下：

1，导入系统文件，代理：

#import <CoreLocation/CoreLocation.h>
@interface MainViewController ()<CLLocationManagerDelegate

2，声明全局变量

@interface MainViewController ()<CLLocationManagerDelegate>{    CLLocationManager *locationmanager;//定位服务    NSString *currentCity;//当前城市    NSString *strlatitude;//经度    NSString *strlongitude;//纬度}

3，声明方法：

//获取经纬度    [self getLocation];

4，

-(void)getLocation{    //判断定位功能是否打开    if ([CLLocationManager locationServicesEnabled]) {        locationmanager = [[CLLocationManager alloc]init];        locationmanager.delegate = self;        [locationmanager requestAlwaysAuthorization];        currentCity = [NSString new];        [locationmanager requestWhenInUseAuthorization];                //设置寻址精度        locationmanager.desiredAccuracy = kCLLocationAccuracyBest;        locationmanager.distanceFilter = 5.0;        [locationmanager startUpdatingLocation];    }}

5，定位失败后的代理方法

#pragma mark CoreLocation delegate (定位失败)//定位失败后调用此代理方法-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{    //设置提示提醒用户打开定位服务    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"允许定位提示" message:@"请在设置中打开定位" preferredStyle:UIAlertControllerStyleAlert];    UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"打开定位" style:UIAlertActionStyleDefault handler:nil];        UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil];    [alert addAction:okAction];    [alert addAction:cancelAction];    [self presentViewController:alert animated:YES completion:nil];}

6，定位成功后的代理方法

#pragma mark 定位成功后则执行此代理方法-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations{    [locationmanager stopUpdatingHeading];    //旧址    CLLocation *currentLocation = [locations lastObject];    CLGeocoder *geoCoder = [[CLGeocoder alloc]init];    //打印当前的经度与纬度    NSLog(@"%f,%f",currentLocation.coordinate.latitude,currentLocation.coordinate.longitude);        //反地理编码    [geoCoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {        if (placemarks.count > 0) {            CLPlacemark *placeMark = placemarks[0];            currentCity = placeMark.locality;            if (!currentCity) {                currentCity = @"无法定位当前城市";            }                        /*看需求定义一个全局变量来接收赋值*/            NSLog(@"----%@",placeMark.country);//当前国家            NSLog(@"%@",currentCity);//当前的城市//            NSLog(@"%@",placeMark.subLocality);//当前的位置//            NSLog(@"%@",placeMark.thoroughfare);//当前街道//            NSLog(@"%@",placeMark.name);//具体地址                    }    }];    }

打印如下：

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