iphone - 位置管理器更新频率，iPhone

Question

我有一个名为“myLocation”的 CLLocation 管理器。

myLocation = [[CLLocationManager alloc] init];
    myLocation.desiredAccuracy = kCLLocationAccuracyBestForNavigation ;
    myLocation.distanceFilter = 10 ;
    myLocation.delegate=self;



    locationEnabledBool = [CLLocationManager locationServicesEnabled];



    if (locationEnabledBool ==NO || ( [CLLocationManager  authorizationStatus] == kCLAuthorizationStatusDenied)) {

    //  LocationText.text = @"Location Service Disabled ";
        UIAlertView *locationAlert = [[UIAlertView alloc] initWithTitle:@"Location Service Disabled" 
                                                        message:@"To re-enable, please go to Settings and turn on Location Service for this app." 
                                                       delegate:nil 
                                              cancelButtonTitle:@"OK" 
                                              otherButtonTitles:nil];
        [locationAlert show];
        [locationAlert release];

    }

        [myLocation startUpdatingLocation];

位置更新功能是

- (void)locationManager:(CLLocationManager *)manager
    didUpdateToLocation:(CLLocation *)newLocation
           fromLocation:(CLLocation *)oldLocation
{

NSLog(@"old location is %f, %f ", oldLocation.coordinate.latitude, oldLocation.coordinate.longitude);
NSLog(@"new location is %f,%f",newLocation.coordinate.latitude, newLocation.coordinate.longitude );
}

有没有办法找到位置管理器更新的频率，是否可以增加或减少？

Answer 1

仅当您调用方法[locationManager startUpdatingLocation]时，您的位置更新才会开始。

您可以使用 NSTimer 控制更新频率。当您需要位置更新时，定期调用 startUpdatingLocation 方法，然后立即调用 stopUpdatingLocation 方法。下次您将仅按照您在 NSTimer 中设置的时间间隔获取位置更新。