How to get iOS current location

1. And introducing a frame header CoreLocation
   #import <CoreLocation/CoreLocation.h>
2. Create a proxy object and set CLLocationManager

   <CLLocationManagerDelegate>
    // 初始化定位管理器
    _locationManager = [[CLLocationManager alloc] init];
    // 设置代理
    _locationManager.delegate = self;
    // 设置定位精确度到米
    _locationManager.desiredAccuracy = kCLLocationAccuracyBest;
    // 设置过滤器为无
    _locationManager.distanceFilter = kCLDistanceFilterNone;
    // 取得定位权限，有两个方法，取决于你的定位使用情况
    // 一个是requestAlwaysAuthorization，一个是requestWhenInUseAuthorization
    // 这句话ios8以上版本使用。
    [_locationManager requestAlwaysAuthorization];
    // 开始定位
    [_locationManager startUpdatingLocation];

1. In the above iOS8 system also you need to add the following key in the plist file to configure
   Privacy - Location Always Usage Description
Privacy - Location When In Use Usage Description

Which can add their own value

1. If you want to turn on background location, then follow the steps below to set

    

   Open backstage positioning .png

2. We need to get to the location information of the corresponding proxy method
   - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
   in this proxy method, we can obtain the current location of latitude and longitude

    //获取经度
    //self.longitude.text = [NSString stringWithFormat:@"%lf", newLocation.coordinate.longitude];
    //获取维度
    //self.latitude.text = [NSString stringWithFormat:@"%lf", newLocation.coordinate.latitude];

Obtain information about the current location of the city

    // 获取当前所在的城市名
    CLGeocoder *geocoder = [[CLGeocoder alloc] init];
    //根据经纬度反向地理编译出地址信息
    [geocoder reverseGeocodeLocation:newLocation completionHandler:^(NSArray *array, NSError *error){
        if (array.count > 0){
            CLPlacemark *placemark = [array objectAtIndex:0];
            //获取当前城市
            NSString *city = placemark.locality;
            if (!city) {
                //注意：四大直辖市的城市信息无法通过locality获得，只能通过获取省份的方法来获得（如果city为空，则可知为直辖市）
                city = placemark.administrativeArea;
            }
            NSArray *array = [city componentsSeparatedByString:@"市"];
            NSString *cityStr = array[0];
            NSString * cityEncode = (NSString *)CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes( kCFAllocatorDefault, (CFStringRef)cityStr, NULL, NULL,  kCFStringEncodingUTF8 ));
            //这里我把获取到的地址信息利用NSUserDefaults保存起来，后面会用到
            NSMutableDictionary *dic = [NSMutableDictionary new];
            [dic setValue:cityEncode forKey:@"city"];
            [[NSUserDefaults standardUserDefaults] setObject:dic forKey:@"cityName"];
            [[NSUserDefaults standardUserDefaults] synchronize];
        }
        else if (error == nil && [array count] == 0) {
            NSLog(@"没有结果返回.");
        }
        else if (error != nil)  {
            //NSLog(@"An error occurred = %@", error);
        }
    }];

1. The system has been updated location data in the background, if you only need to get one stop information access to information updated after completion
   [manager stopUpdatingLocation];