Add an IP address textfield and conditionally enable the listen button on validating the IP address (not implemented yet).

ListenerApp/ContentView.swift

@@ -10,7 +10,10 @@ import Speech
 
 struct ContentView: View {
     @State private var listening = false
+    @State private var listenEnabled = false
     @State private var textHeard = ""
+    @State private var ipAddress = ""
+    @State private var isEditing = false
     
     private let speechRecognizer = SFSpeechRecognizer(locale: Locale(identifier: "en-US"))!
     
@@ -22,6 +25,12 @@ struct ContentView: View {
     
     var body: some View {
         VStack {
+            TextField("IP Address", text: $ipAddress) { isEditing in
+                self.isEditing = isEditing
+            } onCommit: {
+                validate(destination: ipAddress)
+            }
+                .padding()
             Label(textHeard, systemImage:"")
                 .labelStyle(TitleOnlyLabelStyle())
                 .padding()
@@ -31,9 +40,14 @@ struct ContentView: View {
             .padding()
             .background(listening ? Color.red : Color.white)
             .foregroundColor(listening ? .black : .blue)
+            .disabled(listenEnabled == false)
         }
     }
     
+    func validate(destination : String) {
+        listenEnabled = true
+    }
+    
     func listen() {
         self.listening.toggle()
         if (self.listening) {

ListenerApp/Info.plist

@@ -17,7 +17,7 @@
 	<key>CFBundleShortVersionString</key>
 	<string>1.0</string>
 	<key>CFBundleVersion</key>
-	<string>29</string>
+	<string>36</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
 	<key>NSSpeechRecognitionUsageDescription</key>