Open Whatsapp on a particular number in swift

Question

I am trying to open a particular contact chat in whatsapp but not getting any solution. Please help i am totally stuck. I have tried this:

let whatsAppURL: N         


        

Answer 1

1. Add attributes to the Info.plist source code file like this:

   LSApplicationQueriesSchemes
   
       whatsapp
   
   

2. Use the following function on custom click in your app:

   func openWhatsapp(){
       let urlWhats = "https://wa.me/numberWithCountryCode"
       if let urlString = urlWhats.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed){
           if let whatsappURL = URL(string: urlString) {
               if UIApplication.shared.canOpenURL(whatsappURL){
                   if #available(iOS 10.0, *) {
                       UIApplication.shared.open(whatsappURL, options: [:], completionHandler: nil)
                   } else {
                       UIApplication.shared.openURL(whatsappURL)
                   }
               } else {
                   Alert(withMessage: "You do not have WhatsApp installed! \nPlease install first.").show(andCloseAfter: 2.0)
               }
           }
       }
   }