iOS CLLocationManager定位

     在iOS8以前的版本中,我们使用CLLocationManager定位是没有问题的,最近在iOS8系统中却无法定位了。。。。这是一大问题啊!

1、首先定义一个全局的变量用来记录CLLocationManager对象,引入CoreLocation.framework使用#import <CoreLocation/CoreLocation.h>
 @property (nonatomic, strong) CLLocationManager  *locationManager;
2、初始化CLLocationManager并开始定位
locationManager=[[CLLocationManager alloc] init];
    locationManager.delegate=self;
    locationManager.desiredAccuracy=kCLLocationAccuracyBest;
    locationManager.distanceFilter=10; 
    [locationManager startUpdatingLocation];//开启定位
3、实现CLLocationManagerDelegate的代理方法
#pragma mark CLLocationManagerDelegate
/**
* 获取经纬度
*/ -(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{ CLLocation *currLocation=[locations lastObject]; location.strLatitude=[NSString stringWithFormat:@"%f",currLocation.coordinate.latitude]; location.strLongitude=[NSString stringWithFormat:@"%f",currLocation.coordinate.longitude]; NSLog(@"la---%f, lo---%f",currLocation.coordinate.latitude,currLocation.coordinate.longitude);

 CLLocation *location=[[CLLocation alloc] initWithLatitude:currLocation.coordinate.latitude longitude:currLocation.coordinate.longitude];

    

    CLGeocoder *getCoder=[[CLGeocoder alloc]init];

    

    static NSString *strCity=@"";

    [getCoder reverseGeocodeLocation:location completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {

        if (error) {

            NSLog(@"error: %@",error.description);

        }

        else{

            //            NSLog(@"placemarks count %lu",placemarks.count);

            

            _lalAddress=[[UILabel alloc]initWithFrame:CGRectMake(100, HEIGHT-100, WIDTH-200, 30)];

            

            [_lalAddress setTextAlignment:NSTextAlignmentCenter];

            [_lalAddress setTextColor:[UIColor whiteColor]];

            [_lalAddress setBackgroundColor:[UIColor blackColor]];

            [_lalAddress setAlpha:0.8f];

            //            [self.window.rootViewController.view addSubview:_lalAddress];

            for (CLPlacemark *placeMark in placemarks)

            {

                //                NSLog(@"地址name:%@ ",placeMark.name);

                //                NSLog(@"地址thoroughfare:%@",placeMark.thoroughfare);

                //                NSLog(@"地址subThoroughfare:%@",placeMark.subThoroughfare);

                //                NSLog(@"地址locality:%@",placeMark.locality);

                //                NSLog(@"地址subLocality:%@",placeMark.subLocality);

                //                NSLog(@"地址administrativeArea:%@",placeMark.administrativeArea);

                //                NSLog(@"地址subAdministrativeArea:%@",placeMark.subAdministrativeArea);

                //                NSLog(@"地址postalCode:%@",placeMark.postalCode);

                //                NSLog(@"地址ISOcountryCode:%@",placeMark.ISOcountryCode);

                //                NSLog(@"地址country:%@",placeMark.country);

                //                NSLog(@"地址inlandWater:%@",placeMark.inlandWater);

                //                NSLog(@"地址ocean:%@",placeMark.ocean);

                //                NSLog(@"地址areasOfInterest:%@",placeMark.areasOfInterest);

                

                strCity=placeMark.administrativeArea;

                

            }

             

            

        }

    }];

}
/**
 *定位失败,回调此方法
 */
-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{
    if ([error code]==kCLErrorDenied) {
        NSLog(@"访问被拒绝");
    }
    if ([error code]==kCLErrorLocationUnknown) {
        NSLog(@"无法获取位置信息");
    }
}

 iOS8中使用CoreLocation定位

1、在使用CoreLocation前需要调用如下函数【iOS8专用】:
iOS8对定位进行了一些修改,其中包括定位授权的方法,CLLocationManager增加了下面的两个方法:
(1)始终允许访问位置信息
- (void)requestAlwaysAuthorization;

(2)使用应用程序期间允许访问位置数据
- (void)requestWhenInUseAuthorization;
   示例如下:
locationManager=[[CLLocationManager alloc] init];
    locationManager.delegate=self;
    locationManager.desiredAccuracy=kCLLocationAccuracyBest;
    locationManager.distanceFilter=10;
    if (iOSVersion>=8) {
        [locationManager requestWhenInUseAuthorization];//使用程序其间允许访问位置数据(iOS8定位需要)
    }
    [locationManager startUpdatingLocation];//开启定位
2、在Info.plist文件中添加如下配置:
(1)NSLocationAlwaysUsageDescription
(2)NSLocationWhenInUseUsageDescription

这样添加后,定位功能就能正常使用了!
原文地址:https://www.cnblogs.com/boyuanmeng/p/4211680.html