• 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!
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  • 原文地址:https://www.cnblogs.com/boyuanmeng/p/4211680.html
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