Question

我正在使用Core Location框架来获取iOS中的位置。我使用CLLocationManager *locationManager;并致电[locationManager startUpdatingLocation];

问题是我只需要即时位置，但startUpdatingLocation继续给我定位。为了阻止这种情况，我可以使用[self.locationManager stopUpdatingLocation]，但这看起来像是出路或黑客。

有没有更好的方法来获取iOS中的当前位置？

Answer 1

你的.h文件中的

#import <CoreLocation/CoreLocation.h>

 @interface LocationSearchViewController : UIViewController<UITextFieldDelegate,CLLocationManagerDelegate>
 {
 CLLocationManager *locationManager;
}

你的.m文件中的

- (void)viewDidLoad
{
[super viewDidLoad];
locationManager = [[CLLocationManager alloc] init];


locationManager.delegate = self;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;

[locationManager startUpdatingLocation];
}

#pragma mark - CLLocationManagerDelegate

- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
NSLog(@"didFailWithError: %@", error);
UIAlertView *errorAlert = [[UIAlertView alloc]
                           initWithTitle:@"Error" message:@"Failed to Get Your Location" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
[errorAlert show];
}

 - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
NSLog(@"didUpdateToLocation: %@", newLocation);
[locationManager stopUpdatingLocation];   // when u got the lat and long it stop uoatde the location

CLLocation *currentLocation = newLocation;

if (currentLocation != nil) {

  NSString  *getcurrlong = [NSString stringWithFormat:@"%.8f", currentLocation.coordinate.longitude];
  NSSting *getcurrlat = [NSString stringWithFormat:@"%.8f", currentLocation.coordinate.latitude];



}
}

Answer 2

您无法用精确的术语来考虑位置。您将从位置管理员处获得越来越准确的位置，由您决定何时准确。你必须权衡能耗和时间。位置更新永远不会完全准确。永远不会立即归还。设备必须为硬件供电，然后收听GPS / WiFi / Cell信号并使用所有这些来计算位置。

没有办法要求“我当前的精确位置”并立即将其提供给您。位置不是[NSDate date]之类的属性。您只能要求最佳估计位置更新，它们只会以不精确的测量结果向您发送，而且不会立即（除了缓存位置）。

Answer 3

检查

-(void)getCurrentLocation
{
    locationManager = [[CLLocationManager alloc] init];
    locationManager.desiredAccuracy = kCLLocationAccuracyBest;
    locationManager.delegate = self;
    [locationManager startUpdatingLocation];
    startLocation = nil;
}

-(void)locationManager:(CLLocationManager *)manager
   didUpdateToLocation:(CLLocation *)newLocation
          fromLocation:(CLLocation *)oldLocation
{
    if (startLocation == nil)
    {
        startLocation = newLocation;
        [locationManager setDelegate:nil];
        locationManager = nil;

    }
}

如何获得“仅限当前位置”＃39;在iOS？

3 个答案: