iOS 地图定位 简述

NSLocationAlwaysUsageDescription  始终使用定位

NSLocationUsageDescription  是否同意定位

NSLocationWhenInUseUsageDescription  在前台使用定位

CLLocationManager

1 定位权限

A 隐式获取权限

    [locationManager startUpdatingLocation]

B 显示获取权限

    if ([locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)]) {

        

        [locationManager requestWhenInUseAuthorization];

    }

 

C 是否已经决定了定位权限

    + (BOOL)authorizationDetermined {

        

        return [CLLocationManager authorizationStatus] != kCLAuthorizationStatusNotDetermined;

    }

D 获得的定位权限是什么

    + (BOOL)authorized {

 

        return [CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorized ||

               [CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorizedAlways ||

               [CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorizedWhenInUse;

    }

 

    + (BOOL)denined {

        return [CLLocationManager authorizationStatus] == KCLAuthorizationStatusDenied;

    }

 

CLLocation

A 经纬度 CLLocationCoordinate2D coordinate;

B 海拔  CLLocationDistance altitude;

C 航向  CLLocationDirection course;

D 速度  CLLocationSpeed speed;

E 误差半径 (定位精度) CLLocationAccuracy horizontalAccuracy;

CLPlacemark

A 地里位置 CLLocation *location;

B 区域    CLRegion *region;

C 详细地址 NSDictionary *addressDictionary;

D 地址名称 NSString *name;

E 城市    NSString *locality;