From 78ed01672ee01eb11b7708bf9cc71877efa7776d Mon Sep 17 00:00:00 2001
From: Kevin McGill <kevin@mcgilldevtech.com>
Date: Wed, 10 Oct 2018 21:10:10 -0500
Subject: [PATCH] Add canSendText

---
 ios/Classes/SwiftFlutterSmsPlugin.swift | 28 ++++++++++++++++++-------
 1 file changed, 21 insertions(+), 7 deletions(-)

diff --git a/ios/Classes/SwiftFlutterSmsPlugin.swift b/ios/Classes/SwiftFlutterSmsPlugin.swift
index a1596a2..11cda8a 100644
--- a/ios/Classes/SwiftFlutterSmsPlugin.swift
+++ b/ios/Classes/SwiftFlutterSmsPlugin.swift
@@ -17,14 +17,28 @@ public class SwiftFlutterSmsPlugin: NSObject, FlutterPlugin, UINavigationControl
     switch call.method {
     case "sendSMS":
       #if targetEnvironment(simulator)
-      result(FlutterError(code: "message_not_sent", message: "Cannot send message on this device!", details: "Cannot send SMS and MMS on a Simulator. Test on a real device."))
+        result(FlutterError(
+            code: "message_not_sent",
+            message: "Cannot send message on this device!",
+            details: "Cannot send SMS and MMS on a Simulator. Test on a real device."
+          )
+        )
       #else
-      let controller = MFMessageComposeViewController()
-      controller.body = _arguments["message"] as? String
-      controller.recipients = _arguments["recipients"] as? [String]
-      controller.messageComposeDelegate = self
-      UIApplication.shared.keyWindow?.rootViewController?.present(controller, animated: true, completion: nil)
-       result(message)
+        if (MFMessageComposeViewController.canSendText()) {
+          let controller = MFMessageComposeViewController()
+          controller.body = _arguments["message"] as? String
+          controller.recipients = _arguments["recipients"] as? [String]
+          controller.messageComposeDelegate = self
+          UIApplication.shared.keyWindow?.rootViewController?.present(controller, animated: true, completion: nil)
+          result(message)
+        } else {
+          result(FlutterError(
+              code: "device_not_capable",
+              message: "The current device is not capable of sending text messages.",
+              details: "A device may be unable to send messages if it does not support messaging or if it is not currently configured to send messages. This only applies to the ability to send text messages via iMessage, SMS, and MMS."
+            )
+          )
+        }
       #endif
     default:
         result(FlutterMethodNotImplemented)