#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)
- (IBAction)touchDaohang:(id)sender {
if (SYSTEM_VERSION_LESS_THAN(@"6.0")) { // ios6以下，调用google map
NSString *urlString = [[NSString alloc] initWithFormat:@"http://maps.google.com/maps?saddr=34.123,113.122&daddr=34.111,113.222&dirfl=d"];
NSURL *aURL = [NSURL URLWithString:urlString];
[[UIApplication sharedApplication] openURL:aURL];
} else { // 直接调用ios自己带的apple map
CLLocationCoordinate2D to;
to.latitude = 34.765;
to.longitude = 113.714;
MKMapItem *currentLocation = [MKMapItem mapItemForCurrentLocation];
MKMapItem *toLocation = [[MKMapItem alloc] initWithPlacemark:[[MKPlacemark alloc] initWithCoordinate:to addressDictionary:nil] ];
//toLocation.name = _end.streetAddres;
[MKMapItem openMapsWithItems:[NSArray arrayWithObjects:currentLocation, toLocation, nil]
launchOptions:[NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:MKLaunchOptionsDirectionsModeWalking, [NSNumber numberWithBool:YES], nil]
forKeys:[NSArray arrayWithObjects:MKLaunchOptionsDirectionsModeKey, MKLaunchOptionsShowsTrafficKey, nil]]];
}
}