iOS CLLocationManager 定位

今天写个定位，本来很简单，但是在填写plist时，通过系统提示，只能看到NSLocationUsageDescription项目，根本不提示

（1）NSLocationAlwaysUsageDescription
（2）NSLocationWhenInUseUsageDescription
这2个项目，所以我就用了NSLocationUsageDescription，结果就不能定位了。其实NSLocationUsageDescription这个项目在ios8就不用了！

下面简单地说一下用法：

    _locationManager = [[CLLocationManager alloc] init];
    _locationManager.delegate = self;

    _locationManager.distanceFilter=kCLDistanceFilterNone;

    _locationManager.desiredAccuracy = kCLLocationAccuracyBestForNavigation;

    [_locationManager requestWhenInUseAuthorization];

    [_locationManager requestLocation];
    

下面是取到gps后，解析出所在国家代码

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations{
    NSLog(@"locations is %@",locations);

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

    [geocoder reverseGeocodeLocation:[locations lastObject] completionHandler:^(NSArray *placemarks, NSError *error){

        if(error != nil)

        {

            NSLog(@"CLGeocoder error :%@ ",error);

        }

        else//if we can get place info ,we set it into meteData dic with kCGImagePropertyExifCameraOwnerName key

        {

            if(placemarks.count > )

            {

                CLPlacemark *placemark = [placemarks objectAtIndex:];

                NSString *countCodeStr = placemark.ISOcountryCode;

                NSLog(@"countCodeStr is %@",countCodeStr);
            }

        }

    }];
}