iOS 7.0 Location Service授权方法

location.m

CLAuthorizationStatus authStatus = [CLLocationManager authorizationStatus];
if (authStatus == kCLAuthorizationStatusNotDetermined) {
    // _locationManager is CLLocationManager
    [_locationManager requestWhenInUseAuthorization];
    return;
} else if (authStatus == kCLAuthorizationStatusDenied || authStatus == kCLAuthorizationStatusRestricted) {
    // show location services denied alert
    return;
}