Welcome to the Treehouse Community
The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Tim Edgren
7,437 PointsHow to give suggestions based on MKmapview search in a tableview
Hello guys. Im stuck and this might be a bit over the top but i hope someone can help me.
So I have a map on my app with MKmapview. Above the app i have a search option and when the search find a place it adds a annotation to that specific place. But the search takes the last suggestion when i do a search but i want to display the different results when a user search. So the user can take that suggestion and it will go back to the map and put the annotation on that location. The code that I have right now is:
func searchBarSearchButtonClicked(searchBar: UISearchBar){
//1
searchBar.resignFirstResponder()
dismissViewControllerAnimated(true, completion: nil)
if self.mapView.annotations.count != 0{
annotation = self.mapView.annotations[0]
self.mapView.removeAnnotation(annotation)
}
//2
localSearchRequest = MKLocalSearchRequest()
localSearchRequest.naturalLanguageQuery = searchBar.text
localSearch = MKLocalSearch(request: localSearchRequest)
localSearch.startWithCompletionHandler { (localSearchResponse, error) -> Void in
if localSearchResponse == nil{
let alertController = UIAlertController(title: nil, message: "Place Not Found", preferredStyle: UIAlertControllerStyle.Alert)
alertController.addAction(UIAlertAction(title: "Dismiss", style: UIAlertActionStyle.Default, handler: nil))
self.presentViewController(alertController, animated: true, completion: nil)
return
}
//3
self.pointAnnotation = MKPointAnnotation()
self.pointAnnotation.title = searchBar.text
self.pointAnnotation.coordinate = CLLocationCoordinate2D(latitude: localSearchResponse!.boundingRegion.center.latitude, longitude: localSearchResponse!.boundingRegion.center.longitude)
self.pinAnnotationView = MKPinAnnotationView(annotation: self.pointAnnotation, reuseIdentifier: nil)
self.mapView.centerCoordinate = self.pointAnnotation.coordinate
self.mapView.addAnnotation(self.pinAnnotationView.annotation!)
self.mapItemData = localSearchResponse?.mapItems.last
}
}
Im guessing that i should exchange the last part self.mapItemData = localSearchResponse?.mapItems.last with like a for loop like this maybe: ```for item in localSearchResponse!.mapItems { // add to a tableView }
2 Answers

Martin Wildfeuer
Courses Plus Student 11,071 PointsHey there!
You are right, the mapItems array contains multiple items, provided multiple items are found. Let me give you a quick example on how you can display search results on a map. It is also a great showcase for the guard statement. ;)
// ...
// The following code is located in localSearch.startWithCompletionHandler
guard let localSearchResponse = localSearchResponse else {
// Show your not found alert here
// Note: localSearchResponse being nil does not necessarily mean no results have been found,
// there are other reasons why this would fail. Check the error object for more details.
return
}
// Thanks to guard, localSearchResponse is unwrapped here already and guaranteed to be non nil
// Note: You might want to remove previous annotations from the mapView at this point
mapView.removeAnnotations(mapView.annotations)
for item in localSearchResponse.mapItems {
// item is of type MKMapItem, we create our annotation from that
let annotation = MKPointAnnotation()
// Set the annotation coordinate to the actual placemark
// coordinate, rather than the center of our map view
annotation.coordinate = item.placemark.coordinate
// Set the annotation title to the actual name, rather than the search text
if let name = item.name {
annotation.title = name
}
// Add this annotation to our map
self.mapView.addAnnotation(annotation)
}
//...
You will have to adjust this code to meet your needs, but this might be a starting point.
Hope that helps :)

Tim Edgren
7,437 PointsSo in here
´´´ guard let localSearchResponse = localSearchResponse else { // Show your not found alert here // Note: localSearchResponse being nil does not necessarily mean no results have been found, // there are other reasons why this would fail. Check the error object for more details. return } ´´´
Is where i put the tableview code? :-)

Martin Wildfeuer
Courses Plus Student 11,071 PointsThe body of guard is only entered if localSearchResponse
is nil. If results are found, the code is executed further.
As you will want to match the tableView dataSource to the pins, you can append elements to it when a pin is created.