iOS 自带定位功能CoreLocation

定位功能的实现

//
//  AppDelegate.m
//  定位
//
//  Copyright © 2016年 Wss. All rights reserved.
//

#import "AppDelegate.h"
#import <CoreLocation/CoreLocation.h>

@interface AppDelegate ()<CLLocationManagerDelegate>
@property(nonatomic, strong) CLLocationManager *locationManager;
@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.

//定位
self.locationManager = [[CLLocationManager alloc]init];
self.locationManager.delegate = self;
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;  //系统自动帮你选择定位的最佳方式
self.locationManager.distanceFilter = 1;   //1米定位一次

if ([[UIDevice currentDevice].systemVersion doubleValue] >= 8.0) {
[self.locationManager requestWhenInUseAuthorization];
}
[self.locationManager startUpdatingLocation];

if (![CLLocationManager locationServicesEnabled]) {
UIAlertView *alter = [[UIAlertView alloc]initWithTitle:@"提示" message:@"定位服务当前可能尚未打开，请设置打开！" delegate:self cancelButtonTitle:@"cancel" otherButtonTitles:@"ok", nil];
[alter show];
}

return YES;
}
#pragma mark - location manager delegate
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations
{
//取出位置
CLLocation *location = [locations lastObject];

// 反向地理编码,取出具体中文位置，保存起来，方便在需要显示的地方赋值
CLGeocoder *geocoder = [[CLGeocoder alloc]init];
[geocoder reverseGeocodeLocation:location completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
if (!error &&[placemarks count]>0) {
NSDictionary *dict = [[placemarks objectAtIndex:0] addressDictionary];
NSLog(@"---------adderss:%@",dict);
NSLog(@"city:%@-country:%@-countryCCode:%@-fromattedAddressLines:%@-name:%@-state:%@-sublocality:%@",dict[@"City"],dict[@"Country"],dict[@"CountryCode"],dict[@"FormattedAddressLines"][0],dict[@"Name"],dict[@"State"],dict[@"SubLocality"]);
[[NSUserDefaults standardUserDefaults]setObject:dict forKey:@"adderss"];
}else
{
NSLog(@"error:%@",error);
}
}];

//如定位完成后，不需要再实时更新，就关掉定位服务
[self.locationManager stopUpdatingLocation];
}
-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
NSLog(@"---------------error:%@",error);
}

@end

NSDictionary *dict = [[NSUserDefaults standardUserDefaults]objectForKey:@"adderss"];
UILabel *locationDes = [[UILabel alloc]initWithFrame:CGRectMake(20, 100, self.view.frame.size.width-40, 60)];
locationDes.numberOfLines = 0;
locationDes.layer.borderColor =  [UIColor groupTableViewBackgroundColor].CGColor;
locationDes.layer.borderWidth = 1.0;
[locationDes.layer setMasksToBounds:YES];
[locationDes.layer setCornerRadius:8.0];
locationDes.text = [NSString stringWithFormat:@"位置：%@",dict[@"Name"]];
[self.view addSubview:locationDes];

地理编码，获取经纬度

CLGeocoder *geocoder = [[CLGeocoder alloc]init];
[geocoder geocodeAddressString:address completionHandler:^(NSArray *placemarks, NSError *error) {
//如果有错误信息，或者是数组中获取的地名元素数量为0，那么说明没有找到
if (error || placemarks.count==0) {
self.detailAddressLabel.text=@"你输入的地址没找到，可能在月球上";
}else   //  编码成功，找到了具体的位置信息
{
//打印查看找到的所有的位置信息
/*
name:名称
locality:城市
country:国家
postalCode:邮政编码
*/

//取出获取的地理信息数组中的第一个显示在界面上
CLPlacemark *firstPlacemark=[placemarks firstObject];

//纬度
CLLocationDegrees latitude=firstPlacemark.location.coordinate.latitude;
//经度
CLLocationDegrees longitude=firstPlacemark.location.coordinate.longitude;

}
}];

反向地理编码，由经纬度获取中文地址

CLGeocoder *geocoder = [[CLGeocoder alloc]init];
[geocoder reverseGeocodeLocation:location completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
if (!error &&[placemarks count]>0) {
NSDictionary *dict = [[placemarks objectAtIndex:0] addressDictionary];
NSLog(@"---------adderss:%@",dict);
NSLog(@"city:%@-country:%@-countryCCode:%@-fromattedAddressLines:%@-name:%@-state:%@-sublocality:%@",dict[@"City"],dict[@"Country"],dict[@"CountryCode"],dict[@"FormattedAddressLines"][0],dict[@"Name"],dict[@"State"],dict[@"SubLocality"]);
[[NSUserDefaults standardUserDefaults]setObject:dict forKey:@"adderss"];
}else
{
NSLog(@"error:%@",error);
}
}];