Sending message to WhatsApp from your app using Swift?

 var url  = NSURL(string: "whatsapp://send?text=Hello%20Friends%2C%20Sharing%20some%20data%20here...%20!")//Text which will be shared on WhatsApp is: "Hello Friends, Sharing some data here... !"    if UIApplication.sharedApplication().canOpenURL(url!) {        UIApplication.sharedApplication().open(url as URL, options: [:]) { (success) in                if success {                    print("WhatsApp accessed successfully")                } else {                    print("Error accessing WhatsApp")                }            }    }

Note: text needs to be URL encoded. You can get it using any of the open source tools over internet or using addingPercentEncoding(withAllowedCharacters:) function in iOS.e.g.

var urlString = "Hello Friends, Sharing some data here... !"var urlStringEncoded = urlString.addingPercentEncoding(withAllowedCharacters: NSCharacterSet.urlQueryAllowed)var url  = NSURL(string: "whatsapp://send?text=\(urlStringEncoded!)")

Swift 3.0

Try with this code for access watsapp in your application. Its working perfectly for me.

@IBAction func sendButtonAction(_ sender: Any){    let date = Date()    let msg = "Hi my dear friends\(date)"    let urlWhats = "whatsapp://send?text=\(msg)"    if let urlString = urlWhats.addingPercentEncoding(withAllowedCharacters: NSCharacterSet.urlQueryAllowed) {        if let whatsappURL = NSURL(string: urlString) {            if UIApplication.shared.canOpenURL(whatsappURL as URL) {                UIApplication.shared.openURL(whatsappURL as URL)            } else {                print("please install watsapp")            }        }    }}

Swift 5

Code

let urlWhats = "whatsapp://send?text=\("Hello World")"if let urlString = urlWhats.addingPercentEncoding(withAllowedCharacters: NSCharacterSet.urlQueryAllowed) {      if let whatsappURL = NSURL(string: urlString) {            if UIApplication.shared.canOpenURL(whatsappURL as URL) {                 UIApplication.shared.open(whatsappURL as URL)             }              else {                 print("please install watsapp")             }      }}