我确实写了一个使用位置服务的应用程序，应用程序必须每10秒发送位置。
而且效果很好。
只需使用“allowdeferredlocationupdatesuntiltravelled:timeout”方法，遵循苹果的文档。
我所做的是:
必需:注册后台模式更新位置。
1. 创建LocationManger和startUpdatingLocation，精度和filteredDistance为任何你想要的:
-(void) initLocationManager
{
// Create the manager object
self.locationManager = [[[CLLocationManager alloc] init] autorelease];
_locationManager.delegate = self;
// This is the most important property to set for the manager. It ultimately determines how the manager will
// attempt to acquire location and thus, the amount of power that will be consumed.
_locationManager.desiredAccuracy = 45;
_locationManager.distanceFilter = 100;
// Once configured, the location manager must be "started".
[_locationManager startUpdatingLocation];
}
2. 在后台使用allowdeferredlocationupdatesuntilmoved:timeout方法让应用永远运行，当应用移到后台时，你必须用新参数重新启动updatingLocation，就像这样:
- (void)applicationWillResignActive:(UIApplication *)application {
_isBackgroundMode = YES;
[_locationManager stopUpdatingLocation];
[_locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
[_locationManager setDistanceFilter:kCLDistanceFilterNone];
_locationManager.pausesLocationUpdatesAutomatically = NO;
_locationManager.activityType = CLActivityTypeAutomotiveNavigation;
[_locationManager startUpdatingLocation];
}
3.应用程序获得updatedLocations正常与locationManager:didUpdateLocations: callback:
-(void) locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
// store data
CLLocation *newLocation = [locations lastObject];
self.userLocation = newLocation;
//tell the centralManager that you want to deferred this updatedLocation
if (_isBackgroundMode && !_deferringUpdates)
{
_deferringUpdates = YES;
[self.locationManager allowDeferredLocationUpdatesUntilTraveled:CLLocationDistanceMax timeout:10];
}
}
4. 但是你应该在locationManager:didFinishDeferredUpdatesWithError: callback中处理数据
- (void) locationManager:(CLLocationManager *)manager didFinishDeferredUpdatesWithError:(NSError *)error {
_deferringUpdates = NO;
//do something
}
5. 注意:我认为每次应用程序在后台/前台模式之间切换时，我们应该重置LocationManager的参数。
