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[操作系统]Ios开发之定位CLLocationManager


  Ios中的定位功能是通过 Core Location框架实现的。它和地图开发框架是相互独立的。在Core Location中主要实现了定位和地理编码的功能!

  下面我们就来介绍一下它的属性,方法和代理方法!

  属性:

desiredAccuracy:定位精度,是一个枚举类型

//kCLLocationAccuracyBest:最精确定位

//kCLLocationAccuracyNearestTenMeters:十米误差范围

//kCLLocationAccuracyHundredMeters:百米误差范围

//kCLLocationAccuracyKilometer:千米误差范围

//kCLLocationAccuracyThreeKilometers:三千米误差范围

  distanceFilter: 位置信息更新最小距离,只有移动大于这个距离才更新位置信息,默认为kCLDistanceFilterNone:不进行距离限制

  对象方法:

startUpdatingLocation:开始定位追踪

stopUpdatingLocation : 停止定位追踪

startUpdatingHeading:开始方向追踪

stopUpdatingHeading:停止方向追踪

startMonitoringForRegion : 开始对某个区域进行追踪

 stopMonitoringForRegion : 停止对某区域进行追踪 

requestAlwaysAuthorization : 请求获得应用一直使用定位服务授权,注意使用此方法前要在info.plist中配置NSLocationAlwaysUsageDescription

requestWhenInUseAuthorization : 请求获得应用使用时的定位服务授权,注意使用此方法前在要在info.plist中配置NSLocationWhenInUseUsageDescription

  代理方法:

-(void)locationManager:(CLLocationManager*)manager didUpdateLocations:(NSArray *)locations; 位置发生改变后执行

       - (void)locationManager:(CLLocationManager *)manager

didUpdateHeading:(CLHeading *)newHeading; 导航方向发生变化后执行

- (void)locationManager:(CLLocationManager *)manager

    didEnterRegion:(CLRegion *)region;进入某个区域

- (void)locationManager:(CLLocationManager *)manager

    didExitRegion:(CLRegion *)region;走出某个区域之后执行

   开代码:

//// ViewController.m// location//// Created by jerehedu on 15/12/23.// Copyright (c) 2015年 jerehedu. All rights reserved.//#import "ViewController.h"#import <CoreLocation/CoreLocation.h>@interface ViewController ()<CLLocationManagerDelegate>{  CLLocationManager *manager;  CLGeocoder *geocoder;}@end@implementation ViewController- (void)viewDidLoad {  [super viewDidLoad];  UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 375, 122)];  label.font = [UIFont systemFontOfSize:16];  [self.view addSubview:label];  if ([CLLocationManager locationServicesEnabled]) {    NSLog(@"定位服务已经打开");  }  //如果没有授权则请求用户授权  if ([CLLocationManager authorizationStatus]==kCLAuthorizationStatusNotDetermined){    [manager requestWhenInUseAuthorization];  }else if([CLLocationManager authorizationStatus]==kCLAuthorizationStatusAuthorizedWhenInUse){    manager = [[CLLocationManager alloc]init];    [manager requestAlwaysAuthorization ];    [manager requestWhenInUseAuthorization];    manager.delegate = self;    manager.desiredAccuracy = kCLLocationAccuracyBest;//精准度    //  定位精度,枚举类型:    //  kCLLocationAccuracyBest:最精确定位    //  CLLocationAccuracy kCLLocationAccuracyNearestTenMeters:十米误差范围    //kCLLocationAccuracyHundredMeters:百米误差范围    //kCLLocationAccuracyKilometer:千米误差范围    //kCLLocationAccuracyThreeKilometers:三千米误差范围    manager.distanceFilter = 1.0;//移动十米定位一次    //  位置信息更新最小距离,只有移动大于这个距离才更新位置信息,默认为kCLDistanceFilterNone:不进行距离限制    [manager startUpdatingLocation];  }  // Do any additional setup after loading the view, typically from a nib.}-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{  CLLocation *loctaion = [locations firstObject];  NSLog(@"%f %f",loctaion.coordinate.latitude,loctaion.coordinate.longitude );  /*[geocoder reverseGeocodeLocation:loctaion completionHandler:^(NSArray *placemarks, NSError *error) {   CLPlacemark *placemark=[placemarks firstObject];   CLLocation *location=placemark.location;//位置   CLRegion *region=placemark.region;//区域   NSDictionary *addressDic= placemark.addressDictionary;//详细地址信息字典,包含以下部分信息   //    CLPlacemark *placemark = [placemarks firstObject];   //    placemark.addressDictionary   NSString *name=placemark.name;//地名   NSString *thoroughfare=placemark.thoroughfare;//街道   NSString *subThoroughfare=placemark.subThoroughfare; //街道相关信息,例如门牌等   NSString *locality=placemark.locality; // 城市   NSString *subLocality=placemark.subLocality; // 城市相关信息,例如标志性建筑   NSString *administrativeArea=placemark.administrativeArea; // 州   NSString *subAdministrativeArea=placemark.subAdministrativeArea; //其他行政区域信息   NSString *postalCode=placemark.postalCode; //邮编   NSString *ISOcountryCode=placemark.ISOcountryCode; //国家编码   NSString *country=placemark.country; //国家   NSString *inlandWater=placemark.inlandWater; //水源、湖泊   NSString *ocean=placemark.ocean; // 海洋   NSArray *areasOfInterest=placemark.areasOfInterest; //关联的或利益相关的地标   }];*/}- (void)didReceiveMemoryWarning {  [super didReceiveMemoryWarning];  // Dispose of any resources that can be recreated.}

 

作者:杰瑞教育
出处:http://www.cnblogs.com/jerehedu/ 
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