iOS定位

// LocationManager.m
//
// Created by Daniel on 15/12/22.
// Copyright © 2015年 Daniel. All rights reserved.
//

import "LocationManager.h"

import

@interface LocationManager ()
@property (strong, nonatomic)CLLocationManager *manager;
@property (copy, nonatomic)LocationBlock block;
@end

static LocationManager *single = nil;
@implementation LocationManager

• (instancetype)allocWithZone:(struct _NSZone *)zone {
  @synchronized(self) {
  if (!single) {
  single = [super allocWithZone:zone];
  return single;
  }
  return single;
  }
  }

• (instancetype)sharedLocationManager:(LocationBlock)block {
  if (!single) {
  static dispatch_once_t predicate;
  dispatch_once(&predicate, ^{
  single = [LocationManager new];
  single.manager = [[CLLocationManager alloc] init];
  single.manager.delegate = single;
  single.manager.desiredAccuracy = kCLLocationAccuracyBest;
  single.manager.distanceFilter = 100.0f;
  [single.manager requestAlwaysAuthorization];
  [single.manager requestWhenInUseAuthorization];
  });
  }

  if ([CLLocationManager locationServicesEnabled]) {
  single.block = block;
  [single.manager startUpdatingLocation];
  } else {
  UIAlertView *aler = [[UIAlertView alloc] initWithTitle:@"请开启定位功能" message:nil delegate:nil cancelButtonTitle:@"确定" otherButtonTitles: nil];
  [aler show];
  }
  return single;
  }

pragma mark -- CLLocationManagerDelegate

• (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations {

  CLGeocoder *coder = [[CLGeocoder alloc] init];
  [coder reverseGeocodeLocation:locations[0] completionHandler:^(NSArray * _Nullable placemarks, NSError * _Nullable error) {
  if (!error && [placemarks count] > 0) {
  NSDictionary *dict = [[placemarks objectAtIndex:0] addressDictionary];
  _block(dict);
  } else {
  NSLog(@"ERROR: %@", error);
  }
  }];
  }

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

//另 需要再info.plist添加:
（1）NSLocationAlwaysUsageDescription
（2）NSLocationWhenInUseUsageDescription

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