ios开发之 -- 调用系统定位获取当前经纬度与地理信息

ios 10定位:

在info.plist中加入:

//允许在前台使用时获取GPS的描述

定位权限:Privacy - Location When In Use Usage Description 

//允许永久使用GPS描述

定位权限: Privacy - Location Always Usage Description

如下图:

然后再添加framework包,如下图:

代码如下:

1,导入系统文件,代理:

#import <CoreLocation/CoreLocation.h>
@interface MainViewController ()<CLLocationManagerDelegate

2,声明全局变量

@interface MainViewController ()<CLLocationManagerDelegate>
{
    CLLocationManager *locationmanager;//定位服务
    NSString *currentCity;//当前城市
    NSString *strlatitude;//经度
    NSString *strlongitude;//纬度
}

3,声明方法:

//获取经纬度
    [self getLocation];

4,

-(void)getLocation
{
    //判断定位功能是否打开
    if ([CLLocationManager locationServicesEnabled]) {
        locationmanager = [[CLLocationManager alloc]init];
        locationmanager.delegate = self;
        [locationmanager requestAlwaysAuthorization];
        currentCity = [NSString new];
        [locationmanager requestWhenInUseAuthorization];
        
        //设置寻址精度
        locationmanager.desiredAccuracy = kCLLocationAccuracyBest;
        locationmanager.distanceFilter = 5.0;
        [locationmanager startUpdatingLocation];
    }
}

5,定位失败后的代理方法

#pragma mark CoreLocation delegate (定位失败)
//定位失败后调用此代理方法
-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
    //设置提示提醒用户打开定位服务
    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"允许定位提示" message:@"请在设置中打开定位" preferredStyle:UIAlertControllerStyleAlert];
    UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"打开定位" style:UIAlertActionStyleDefault handler:nil];
    
    UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil];
    [alert addAction:okAction];
    [alert addAction:cancelAction];
    [self presentViewController:alert animated:YES completion:nil];
}

6,定位成功后的代理方法

#pragma mark 定位成功后则执行此代理方法
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations
{
    [locationmanager stopUpdatingHeading];
    //旧址
    CLLocation *currentLocation = [locations lastObject];
    CLGeocoder *geoCoder = [[CLGeocoder alloc]init];
    //打印当前的经度与纬度
    NSLog(@"%f,%f",currentLocation.coordinate.latitude,currentLocation.coordinate.longitude);
    
    //反地理编码
    [geoCoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
        if (placemarks.count > 0) {
            CLPlacemark *placeMark = placemarks[0];
            currentCity = placeMark.locality;
            if (!currentCity) {
                currentCity = @"无法定位当前城市";
            }
            
            /*看需求定义一个全局变量来接收赋值*/
            NSLog(@"----%@",placeMark.country);//当前国家
            NSLog(@"%@",currentCity);//当前的城市
//            NSLog(@"%@",placeMark.subLocality);//当前的位置
//            NSLog(@"%@",placeMark.thoroughfare);//当前街道
//            NSLog(@"%@",placeMark.name);//具体地址
            
        }
    }];
    
}

打印如下:

 

定位服务,最好在真机上运行,模拟器也可以,不过很坑,也很不准确!

 

posted @ 2017-04-11 18:12  稻草人11223  阅读(11593)  评论(1编辑  收藏  举报
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