iOS调用程序外地图导航

        //导航

        if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"baidumap://map/"]]) {

            //百度app导航

            NSString *urlstr = [NSString stringWithFormat:@"baidumap://map/direction?origin=%f,%f&destination=%f,%f&mode=driving&src=iHope", _newCoordinate.latitude, _newCoordinate.longitude, _destLocation.latitude, _destLocation.longitude];

            NSLog(@"%@", urlstr);

            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:urlstr]];

        }

        else {

            //系统地图导航

            MKMapItem *currentLocation = [MKMapItem mapItemForCurrentLocation];

            MKMapItem *toLocation = [[MKMapItem alloc] initWithPlacemark:[[MKPlacemark alloc] initWithCoordinate:_destLocationaddressDictionary:nil]];

            toLocation.name = self.destName;

            

            [MKMapItem openMapsWithItems:@[currentLocation, toLocation]

                           launchOptions:@{MKLaunchOptionsDirectionsModeKey: MKLaunchOptionsDirectionsModeDriving,MKLaunchOptionsShowsTrafficKey: [NSNumber numberWithBool:YES]}];

        }