1.CLLocationManager
CLLocationManager的常用操作和属性
开始用户定位- (void)startUpdatingLocation;
停止用户定位- (void) stopUpdatingLocation;
说明:当调用了startUpdatingLocation方法后,就开始不断地定位用户的位置,中途会频繁地调用代理的下面方法
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations;
每隔多少米定位一次
(本文来源于图老师网站,更多请访问http://m.tulaoshi.com/bianchengyuyan/)@property(assign, nonatomic) CLLocationDistance distanceFilter;
定位精确度(越精确就越耗电)
@property(assign, nonatomic) CLLocationAccuracy desiredAccuracy;
使用定位功能,首先要导入框架,遵守CLLocationManagerDelegate协议,再创建位置管理器CLLocationManager
在iOS8.0后,定位功能需要在info.plist中加入NSLocationWhenInUseUsageDescription和NSLocationAlwaysUsageDescription这两个NSString类型字段,才能够使用定位功能
代码贴出来与大家共勉,各位看官自行研究
{ self.locationManager = [[CLLocationManager alloc] init]; _locationManager.delegate = self; if([CLLocationManager locationServicesEnabled] == NO) { // NSLog(@"没有GPS服务"); } //地理位置精确度 _locationManager.desiredAccuracy=kCLLocationAccuracyNearestTenMeters; //设置距离筛选器,double类型,只要距离变化多少,就调用委托代理 self.locationManager.distanceFilter = kCLDistanceFilterNone; // meters [_locationManager requestWhenInUseAuthorization];// 前台定位 [_locationManager startUpdatingLocation];}- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{ NSLog(@"longitude = %f", ((CLLocation *)[locations lastObject]).coordinate.longitude); NSLog(@"latitude = %f", ((CLLocation *)[locations lastObject]).coordinate.latitude);CGFloat longTI=((CLLocation *)[locations lastObject]).coordinate.longitude;CGFloat latTI=((CLLocation *)[locations lastObject]).coordinate.latitude;//将经度显示到label上_longitudeLabel.text = [NSString stringWithFormat:@"%f",longTI];//将纬度现实到label上_latitudeLabel.text = [NSString stringWithFormat:@"%f",latTI]; // 获取当前所在的城市名 CLGeocoder *geocoder = [[CLGeocoder alloc] init]; //根据经纬度反向地理编译出地址信息 [geocoder reverseGeocodeLocation:locations.lastObject completionHandler:^(NSArray *array, NSError *error) { if (array.count 0) { CLPlacemark *placemark = [array objectAtIndex:0];// //将获得的所有信息显示到label上// self.location.text = placemark.name; //获取城市 NSString *city = placemark.locality; if (!city) { //四大直辖市的城市信息无法通过locality获得,只能通过获取省份的方法来获得(如果city为空,则可知为直辖市) city = placemark.administrativeArea; } // NSLog(@"city = %@", city); _cityName=city; } else if (error == nil && [array count] == 0) { // NSLog(@"No results were returned."); } else if (error != nil) { // NSLog(@"An error occurred = %@", error); } }]; //系统会一直更新数据,直到选择停止更新,因为我们只需要获得一次经纬度即可,所以获取之后就停止更新 [manager stopUpdatingLocation];}
以上是关于脚本之家图老师小编给大家整理的IOS开发之详解定位CLLocation,后续还会持续更新,希望大家能够喜欢。