Making a phone call with swift not working with certain numbers - ios

Question

I have been trying desperately for the past few hours to make a phone call with swift when I call this function.
func callPhone(phoneNumber: String){
guard let url = URL(string:"telprompt:\(phoneNumber)") else {
print("failed to load url, phone number: \(phoneNumber)")
return
}
UIApplication.shared.open(url)
}
For some reason it doesn't work, I have researched online everywhere and still couldn't find a problem to why this wouldn't work. Some numbers would occasionally work, like if I tried "123456789" it would work. but if i try a different number it wouldn't work; The guard let statement doesn't work and the url would be empty.
Please help me. Any feedback would be very much appreciated.
Edit: So I found out when it is not working but I am not sure how to solve it. It doesn't work when I get the phone number from apple maps, but when I hard code the phone number it works.
Here is my full code:
import UIKit
import MapKit
import CoreLocation
class ViewController: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate {
#IBOutlet weak var map: MKMapView!
let locationManager = CLLocationManager()
let regionMeters : Double = 10000
override func viewDidLoad() {
super.viewDidLoad()
map.delegate = self
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.requestWhenInUseAuthorization()
locationManager.startUpdatingLocation()
map.showsUserLocation = true
if let location = locationManager.location?.coordinate {
let region = MKCoordinateRegion.init(center: location, latitudinalMeters: regionMeters, longitudinalMeters: regionMeters)
map.setRegion(region, animated: true)
}
searchLocations(search: "Restaurant")
}
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
let identifier = "Place"
var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: identifier)
if annotationView == nil {
annotationView = MKMarkerAnnotationView(annotation: annotation, reuseIdentifier: identifier)
annotationView!.canShowCallout = true
let btn = UIButton(type: .contactAdd)
annotationView!.rightCalloutAccessoryView = btn
} else {
annotationView!.annotation = annotation
}
return annotationView
}
func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
let subtitle = view.annotation?.subtitle as! String
let splitted = subtitle.components(separatedBy: "+")
let number = splitted.last as! String
let trimmedNumber : String = number.components(separatedBy: [" ", "-", "(", ")"]).joined()
CallOnPhone(phoneNumber: trimmedNumber)
}
func searchLocations(search : String){
let searchRequest = MKLocalSearch.Request()
searchRequest.naturalLanguageQuery = search
searchRequest.region = map.region
let activeSearch = MKLocalSearch(request: searchRequest)
activeSearch.start { (response, err) in
if response == nil {
print("no request")
} else {
for item in (response?.mapItems)!{
let annotation = MKPointAnnotation()
annotation.title = item.name
if let phone = item.phoneNumber {
annotation.subtitle = "Phone Number: \(phone as String)"
}
annotation.coordinate = item.placemark.coordinate
self.map.addAnnotation(annotation)
}
}
}
}
#objc func CallOnPhone(phoneNumber: String){
let newStringPhone = phoneNumber.replacingOccurrences(of: " ", with: "", options: .literal, range: nil)
print(newStringPhone)
if newStringPhone != ""{
if let url = URL(string: "tel://\(newStringPhone)"), UIApplication.shared.canOpenURL(url) {
if #available(iOS 10, *) {
UIApplication.shared.open(url)
} else {
UIApplication.shared.openURL(url)
}
}
}
}
}
Thanks,

Answer 1

Try trimming the phone number.
let myphone:String = phoneNumber.trimmingCharacters(in:.whitespacesAndNewlines)
Full code:
if let url = URL(string: "tel://\(myphone)"),UIApplication.shared.canOpenURL(url) {
if #available(iOS 10, *) {
UIApplication.shared.open(url, options: [:], completionHandler:nil)
} else {
UIApplication.shared.openURL(url)
}
} else {
Util.shared.showToast(message: "Can't make call from this device", view: self.view)
}

Answer 2

Below code show calling a number on button click. Also removing space if phonenum has spaces.
var phoneNumber = "Phone Number: 1234567"
var finalNumber = ""
let number = phoneNumber.split(separator: ":")
let tempNum = "\(number.last ?? "")"
print(tempNum)
let trimmedNumber : String = tempNum.components(separatedBy: [" ", "-", "(", ")"]).joined()
print(trimmedNumber)
finalNumber = trimmedNumber
print(finalNumber)
btn_Call.addTarget(self, action: #selector(CallOnPhone), for: .touchUpInside)
#objc func CallOnPhone(sender:UIButton){
let newStringPhone = finalNumber.replacingOccurrences(of: " ", with: "", options: .literal, range: nil)
print(newStringPhone)
if newStringPhone != ""{
if let url = URL(string: "tel://\(newStringPhone)"), UIApplication.shared.canOpenURL(url) {
if #available(iOS 10, *) {
UIApplication.shared.open(url)
} else {
UIApplication.shared.openURL(url)
}
}
}
}