我使用MKMapItem从用户点击“行车路线”按钮后，我的应用程序中启动地图应用程序。 地图应用程序中，从当前位置精准的显示方向来了一个地址。 但我怎么回去我的应用程序，如果我不再希望看到的方向？ 下面是我的连接代码IBAction 。
码：
- (IBAction)pressDirectionsButton:(id)sender {
Class mapItemClass = [MKMapItem class];
if (mapItemClass && [mapItemClass respondsToSelector:@selector(openMapsWithItems:launchOptions:)])
{
CLGeocoder *geocoder = [[CLGeocoder alloc] init];
NSString *addressString = [NSString stringWithFormat:@"%@,%@,%@,%@,%@",
self.currentlySelectedTemple.houseNumber,
self.currentlySelectedTemple.street,
self.currentlySelectedTemple.city,
self.currentlySelectedTemple.state,
self.currentlySelectedTemple.country];
[geocoder geocodeAddressString:addressString completionHandler:^(NSArray *placemarks, NSError *error) {
//Convert CLPlacemark to an MKPlacemark
CLPlacemark *geocodedPlacemark = [placemarks objectAtIndex:0];
MKPlacemark *placemark = [[MKPlacemark alloc]
initWithCoordinate:geocodedPlacemark.location.coordinate addressDictionary:geocodedPlacemark.addressDictionary];
//Create a map item for geocoded address to pass to Maps app
MKMapItem *mapItem = [[MKMapItem alloc] initWithPlacemark:placemark];
[mapItem setName:geocodedPlacemark.name];
//Set Directions mode to Driving
NSDictionary *launchOptions = @{MKLaunchOptionsDirectionsModeKey:MKLaunchOptionsDirectionsModeDriving};
//Get the "Current User Locations" MKMapItem
MKMapItem *currentLocationMapItem = [MKMapItem mapItemForCurrentLocation];
//Pass the current location and destination map items to Maps app
[MKMapItem openMapsWithItems:@[currentLocationMapItem, mapItem] launchOptions:launchOptions];
}];
}
}
