定位功能---封装的一个获取当前位置的经纬度信息的类

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声明部分LocationManager.h

#import <Foundation/Foundation.h>#import <CoreLocation/CoreLocation.h>//声明这个blocktypedef void(^GetLocationInformation)(CLLocation *location);//定位管理@interface LocationManager : NSObject <CLLocationManagerDelegate> {}@property (nonatomic, strong) CLLocationManager *manager;//定义一个返回定位信息的block@property (nonatomic, copy) GetLocationInformation callback;//初始化管理器+ (LocationManager *)shareSingleton;//获取用户定位信息+ (void)getUserLocation:(GetLocationInformation)block;@end

实现部分LocationManager.m

#import "LocationManager.h"//单例所指向的内存区域，整个App进程只有一次初始化static LocationManager *manager = nil;@implementation LocationManager+ (LocationManager *)shareSingleton {    @synchronized (self) {        if (!manager) {            manager = [[LocationManager alloc] init];        }    }    return manager;}- (id)init {    self = [super init];    if (self) {        //系统的定位管理器        self.manager = [[CLLocationManager alloc] init];        self.manager.delegate = self;        //定位精度        self.manager.desiredAccuracy = kCLLocationAccuracyBest;        //请求授权        [self.manager requestAlwaysAuthorization];    }    return self;}/* 针对系统定位的顶层封装的好处 1.子视图控制器或其他组件可以用更少的代码完成相应的工作。 2.底层内容或者调用改变，只需改变中间的封装层。对于各个组件并无影响。 [LocationManager getUserLocation:^(CLLocation *location) { }]; */+ (void)getUserLocation:(GetLocationInformation)block {    if (!manager) {        manager = [LocationManager shareSingleton];    }    manager.callback = block;    [manager.manager startUpdatingLocation];}- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations {    _callback([locations lastObject]);    [manager stopUpdatingLocation];}@end

调用

//经纬度    NSString *longitude;    NSString *latitude;     //获取用户当前的经纬度    [LocationManager getUserLocation:^(CLLocation *location) {         //拿到经纬度就可以去拼接参数拿数据了    longitude = [NSString stringWithFormat:@"%lf", location.coordinate.longitude];    latitude = [NSString stringWithFormat:@"%lf", location.coordinate.latitude];    }];

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