在很多的APP开发中经常使用到定位功能，对于这种常用的方法很有必要对其封装使用

话不多说直接上代码：使用到了单例设计模式:
`

import <Foundation/Foundation.h>

import <MapKit/MapKit.h>

@protocol PositionToolDelegate <NSObject>

@optional
/**

• 位置改变时通知传值
  */

• (void)noticePositionChanged;

@end

@interface PositionTool : NSObject<CLLocationManagerDelegate,PositionToolDelegate> {
CLLocationManager *_locationManager;
NSMutableArray *_locationArr ;
}

@property (nonatomic,assign) CLLocationDegrees latitude;//经度
@property (nonatomic,assign) CLLocationDegrees longtitude;//纬度
/**

• 位置地区信息
  */
  @property (nonatomic,strong) NSString *positionName;
  @property (nonatomic,strong) NSString *province;
  @property (nonatomic,strong) NSString *city;
  @property (nonatomic,strong) NSString *area;

//@property (nonatomic,strong) id<PositionToolDelegate> delegate;

/**

• 添加回调代理方法
  */

• (void)addDelegate:(id)delegate;
  /**

• 移除回调代理方法
  */

• (void)removeDelegate:(id)delegate;
  /**

• 获取位置中心信息
  */

• (CLLocationCoordinate2D)getCenter;
  /**

• 更新位置
  */

• (void)updateLocation;

• (void)getLocation;

/**

• 单例初始化方法
  */

• (PositionTool )shareInfo;
  /*

• 释放单例信息
  */

• (void)freeInfo;

@end
.m方法的实现

• (PositionTool)shareInfo {
  @synchronized(self) {
  if (_positionTool == nil) {
  _positionTool=[[PositionTool alloc] init];
  _positionTool.positionName=@"没有定位";
  }
  }
  return _positionTool;
  }
  /*

• 释放单例实现
  */

• (void)freeInfo {
  if (_positionTool) {
  _positionTool = nil;
  }
  }

• (id)init {
  self=[super init];
  if (self) {
  _locationArr=[[NSMutableArray alloc] init];
  }
  return self;
  }
  /**

• 代理回调添加和删除实现方法
• @param delegate 代理
  */

• (void)addDelegate:(id<PositionToolDelegate>)delegate {
  [_locationArr addObject:delegate];
  }
• (void)removeDelegate:(id)delegate {
  [_locationArr removeObject:delegate];
  }

/**

• 获取位置信息
  */

• (CLLocationCoordinate2D)getCenter {
  return [_locationManager location].coordinate;
  }
• (void)updateLocation {
  [_locationManager startUpdatingLocation];
  }

pragma mark ========= 获取位置 ==========

• (void)getLocation {
  if ([CLLocationManager locationServicesEnabled]) {
  _locationManager=[[CLLocationManager alloc] init];
  _locationManager.delegate=self;
  //精度最高，耗电最大
  _locationManager.desiredAccuracy=kCLLocationAccuracyBest;
  _locationManager.distanceFilter = 200;
  [_locationManager startUpdatingLocation];
  if ([[[UIDevice currentDevice] systemVersion] floatValue] >=8.0) {
  [_locationManager requestAlwaysAuthorization];
  }
  }
  }

pragma mark - 调用地图代理方法

• (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error {
  NSLog(@"%@",error);
  }

• (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status {
  switch (status) {
  case kCLAuthorizationStatusNotDetermined:
  if ([_locationManager respondsToSelector:@selector(requestAlwaysAuthorization)]) {
  [_locationManager requestAlwaysAuthorization];
  }
  break;

    default:
        break;
  

  }
  }
  //获取经纬度

• (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations {
  CLLocation *newLocation=locations[0];
  //CLLocationCoordinate2D oldCoordinate=newLocation.coordinate;
  //NSLog(@"旧的经度：%f,旧的纬度：%f",oldCoordinate.longitude,oldCoordinate.latitude);
  //NSLog(@"新的经度：%f,新的纬度：%f",newLocation.coordinate.longitude,newLocation.coordinate.latitude);
  self.latitude=newLocation.coordinate.latitude;
  self.longtitude=newLocation.coordinate.longitude;
  [manager stopUpdatingLocation];

  CLGeocoder *geocoder=[[CLGeocoder alloc] init];
  [geocoder reverseGeocodeLocation:newLocation completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
  for (CLPlacemark *place in placemarks) {
  self.positionName=place.name;
  self.city=place.locality;
  self.area=place.subLocality;

        NSLog(@"%@",self.area);
    }
    
    for (id<PositionToolDelegate>delegate in _locationArr) {
        if (delegate && [delegate respondsToSelector:@selector(noticePositionChanged)]) {
            [delegate noticePositionChanged];
        }
    }
  

  }];

  for (id<PositionToolDelegate> delegate in _locationArr) {
  if (delegate && [delegate respondsToSelector:@selector(noticePositionChanged)]) {
  [delegate noticePositionChanged];
  }
  }
  }

-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation {
NSLog(@"aaa%@", @"ok");
}
`
使用时候直接在使用到的地方加入
[[PositionTool shareInfo] getLocation];