Hi,
I watched a few lessons on Youtube and now tried to get hands-on experience. I am pursuing a little project which involves a tabbed app where I tried on the first page to create a map with a button showing the current location. Pretty basic actually. But somehow it just doesn’t work and I don’t know what’s the issue. Someone from CodewithChris told me this “I would suggest breaking up your app into smaller components and making sure each one works before going on to the next. Try outputting your location first before plotting it on a map etc so you can localize bugs easier.” I just don’t understand what she means by smaller components. I really appreciate all the help I can get. Below is the code as good as possible. Thanks in advance for every help.
"
import UIKit
import MapKit
import CoreLocation
class ViewController: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate {
@IBOutlet var textFieldForAddress: UITextField!
@IBOutlet var getDirectionsButton: UIButton!
@IBOutlet var map: MKMapView!
var locationManger = CLLocationManager()
override func viewDidLoad() {
super.viewDidLoad()
locationManger.delegate = self
locationManger.desiredAccuracy = kCLLocationAccuracyBest
locationManger.requestAlwaysAuthorization()
locationManger.requestWhenInUseAuthorization()
locationManger.startUpdatingLocation()
map.delegate = self
}
@IBAction func getDirectionsTapped(_ sender: Any) {
getAddress()
}
func getAddress() {
let geoCoder = CLGeocoder()
geoCoder.geocodeAddressString(textFieldForAddress.text!) { (placemarks, error) in
guard let placemarks = placemarks, let location = placemarks.first?.location
else {
print("No Location Found")
return
}
print(location)
self.mapThis(destinationCord: location.coordinate)
}
}
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
print(locations)
}
func mapThis(destinationCord : CLLocationCoordinate2D) {
let souceCordinate = (locationManger.location?.coordinate)!
let soucePlaceMark = MKPlacemark(coordinate: souceCordinate)
let destPlaceMark = MKPlacemark(coordinate: destinationCord)
let sourceItem = MKMapItem(placemark: soucePlaceMark)
let destItem = MKMapItem(placemark: destPlaceMark)
let destinationRequest = MKDirections.Request()
destinationRequest.source = sourceItem
destinationRequest.destination = destItem
destinationRequest.transportType = .automobile
destinationRequest.requestsAlternateRoutes = true
let directions = MKDirections(request: destinationRequest)
directions.calculate { (response, error) in
guard let response = response else {
if error != nil {
print("Something is wrong :(")
}
return
}
let route = response.routes[0]
self.map.addOverlay(route.polyline)
self.map.setVisibleMapRect(route.polyline.boundingMapRect, animated: true)
}
}
func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay) -> MKOverlayRenderer {
let render = MKPolylineRenderer(overlay: overlay as! MKPolyline)
render.strokeColor = .blue
return render
}
}