iPhone SDK位置更改通知

Question

I am planning to do GPS location on iPhone. Can you tell me the information regarding GPS (delegates,methods etc).

Answer 1

Look up the documentation for CLLocationManager and CLLocationManagerDelegate . If you still have specific questions then, come back and ask them.

Answer 2

Declare a Location Manager of CLLocation

CLLocationManager *locManager;

In your Function

self.locManager = [[CLLocationManager alloc] init]; 
locManager.delegate = self; 
locManager.desiredAccuracy = kCLLocationAccuracyBest;
[locManager startUpdatingLocation];   // This Method will call the didUpdateToLocation Delegate
[locManager stopUpdatingLocation];   //This Methods stops the GPS from updating

Location Manager Delegate

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
 //Do actions when the GPS is Updating
}
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
    NSLog(@"Error in GPS: %@",error);  
}

Dont forget to include CLLocationManagerDelegate in .h file and Add CoreLocation Framework to your project