注：自iOS8起，系统定位功能进行了升级，SDK为了实现最新的适配，自v2.5.0起也做了相应的修改，开发者在使用定位功能之前，需要在info.plist里添加（以下二选一，两个都添加默认使用NSLocationWhenInUseUsageDescription）：
NSLocationWhenInUseUsageDescription ，允许在前台使用时获取GPS的描述
NSLocationAlwaysUsageDescription ，允许永久使用GPS的描述
_locationMag = [[CLLocationManager alloc] init];
if (![CLLocationManager locationServicesEnabled]) {
NSLog(@"定位服务当前可能尚未打开，请设置打开！");
return;
}
//如果没有授权则请求用户授权
if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusNotDetermined){
[_locationMag requestWhenInUseAuthorization];
}else if([CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorizedWhenInUse){
//设置代理
_locationMag.delegate=self;
//设置定位精度
_locationMag.desiredAccuracy = kCLLocationAccuracyBest;
//启动定位
[_locationMag startUpdatingLocation];
}
#pragma mark - CoreLocation 代理
#pragma mark 跟踪定位代理方法，每次位置发生变化即会执行（只要定位到相应位置）
//可以通过模拟器设置一个虚拟位置，否则在模拟器中无法调用此方法
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations {
CLLocation *location=[locations firstObject];//取出第一个位置
CLLocationCoordinate2D coordinate = location.coordinate;//位置坐标
NSLog(@"经度：%f,纬度：%f,海拔：%f,航向：%f,行走速度：%f",coordinate.longitude,coordinate.latitude,location.altitude,location.course,location.speed);
CLLocation *c = [[CLLocation alloc] initWithLatitude:coordinate.latitude longitude:coordinate.longitude];
//创建位置
CLGeocoder *revGeo = [[CLGeocoder alloc] init];
[revGeo reverseGeocodeLocation:c completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
if (!error && placemarks.count > 0) {
NSDictionary *dict = [[placemarks objectAtIndex:0] addressDictionary];
// Country(国家) State(城市) SubLocality(区) Street(详细)
NSLog(@"%@",[dict objectForKey:@"Country"]);
NSLog(@"%@",[dict objectForKey:@"State"]);
NSLog(@"%@",[dict objectForKey:@"SubLocality"]);
NSLog(@"%@",[dict objectForKey:@"Street"]);
NSString *stateStr = [dict objectForKey:@"State"];
if (stateStr.length != 0) {
[backButton setTitle:[NSString stringWithFormat:@"%@",stateStr] forState:UIControlStateNormal];
[MFCurrentCity shareInstanceCityName].cityNameString = stateStr;
[MFCurrentCity shareInstanceCityName].selectCityName = stateStr;
// NSLog(@"cityLocationView is -- %@",cityLocationView.cityNameStr);
[SVProgressHUD dismiss];
} else {
[SVProgressHUD dismiss];
[self locationTap];
}
}
}];
//如果不需要实时定位，使用完即使关闭定位服务
[_locationMag stopUpdatingLocation];
}