[ios] Display navigation voice and change instructions in settings

Signed-off-by: Yannik Bloscheck <git@yannikbloscheck.com>

iphone/Maps/Core/TextToSpeech/MWMTextToSpeech.h

@@ -1,8 +1,10 @@
 #import "MWMTextToSpeechObserver.h"
+#import <AVFoundation/AVFoundation.h>
 
 @interface MWMTextToSpeech : NSObject
 
 + (MWMTextToSpeech *)tts;
+- (AVSpeechSynthesisVoice *)voice;
 + (BOOL)isTTSEnabled;
 + (void)setTTSEnabled:(BOOL)enabled;
 + (BOOL)isStreetNamesTTSEnabled;

iphone/Maps/Core/TextToSpeech/MWMTextToSpeech.mm

@@ -134,7 +134,10 @@ using Observers = NSHashTable<Observer>;
   [ud setObject:locale forKey:kUserDefaultsTTSLanguageBcp47];
   [self createVoice:locale];
 }
-
+- (AVSpeechSynthesisVoice *)voice {
+  [self createVoice:[[self class] savedLanguage]];
+  return self.speechVoice;
+}
 - (BOOL)isValid { return _speechSynthesizer != nil && _speechVoice != nil; }
 + (BOOL)isTTSEnabled { return [NSUserDefaults.standardUserDefaults boolForKey:kIsTTSEnabled]; }
 + (void)setTTSEnabled:(BOOL)enabled {

iphone/Maps/LocalizedStrings/en-GB.lproj/Localizable.strings

@@ -539,6 +539,12 @@
 "editor_report_problem_send_button" = "Send";
 "autodownload" = "Auto-download maps";
 
+/* Voice */
+"voice" = "Voice";
+"voice_explanation" = "It's possible to pick a better voice in the system settings under *Accesibility*, *Read & Speak*, *Voices*.";
+"voice_explanation_before_version26" = "It's possible to pick a better voice in the system settings under *Accesibility*, *Spoken Content*, *Voices*.";
+"unknown" = "Unknown";
+
 /* Place page confirmation messages and time ago formatting */
 "existence_confirmed_time_ago" = "Existence confirmed %@";
 "hours_confirmed_time_ago" = "Confirmed %@";

iphone/Maps/LocalizedStrings/en.lproj/Localizable.strings

@@ -558,7 +558,11 @@
 "editor_report_problem_send_button" = "Send";
 "autodownload" = "Auto-download maps";
 
-
+/* Voice */
+"voice" = "Voice";
+"voice_explanation" = "It's possible to pick a better voice in the system settings under *Accesibility*, *Read & Speak*, *Voices*.";
+"voice_explanation_before_version26" = "It's possible to pick a better voice in the system settings under *Accesibility*, *Spoken Content*, *Voices*.";
+"unknown" = "Unknown";
 
 /* Place page confirmation messages and time ago formatting */
 "existence_confirmed_time_ago" = "Existence confirmed %@";

iphone/Maps/Model/Settings.swift

@@ -1,4 +1,5 @@
 import Combine
+import AVFoundation
 
 /// The settings
 @objc class Settings: NSObject {
@@ -325,6 +326,16 @@ import Combine
     }
     
     
+    /// The voice used for voice guidance during routing
+    @objc static var voiceForVoiceRouting: String? {
+        if let voice = MWMTextToSpeech.tts().voice() {
+            return voice.name
+        }
+        
+        return nil
+    }
+    
+    
     /// If street names should be announced in the voice guidance during routing
     @objc static var shouldAnnounceStreetnamesWhileVoiceRouting: Bool {
         get {

iphone/Maps/UI/Settings/SettingsNavigationView.swift

@@ -4,6 +4,10 @@ import SwiftUI
 struct SettingsNavigationView: View {
     // MARK: Properties
     
+    /// The scene phase of the environment
+    @Environment(\.scenePhase) private var scenePhase
+    
+    
     /// If the perspective view should be used during routing
     @State var hasPerspectiveViewWhileRouting: Bool = true
     
@@ -48,6 +52,10 @@ struct SettingsNavigationView: View {
     @State var shouldAvoidStepsWhileRouting: Bool = false
     
     
+    /// A date for forcing a refresh of the view
+    @State var forceRefreshDate: Date = Date.now
+    
+    
     /// The actual view
     var body: some View {
         List {
@@ -73,6 +81,28 @@ struct SettingsNavigationView: View {
                         Text("pref_tts_language_title")
                     }
                     
+                    HStack {
+                        VStack(alignment: .leading) {
+                            Text("voice")
+                            
+                            if #available(iOS 26, *) {
+                                Text("voice_explanation")
+                                    .font(.footnote)
+                                    .foregroundStyle(.secondary)
+                            } else {
+                                Text("voice_explanation_before_version26")
+                                    .font(.footnote)
+                                    .foregroundStyle(.secondary)
+                            }
+                        }
+                        
+                        Spacer()
+                        
+                        Text(Settings.voiceForVoiceRouting ?? "unknown")
+                            .foregroundStyle(.secondary)
+                            .id(UUID())
+                    }
+                    
                     Toggle(isOn: $shouldAnnounceStreetnamesWhileVoiceRouting) {
                         VStack(alignment: .leading) {
                             Text("pref_tts_street_names_title")
@@ -111,6 +141,7 @@ struct SettingsNavigationView: View {
                     .listRowInsets(.init(top: 0, leading: 0, bottom: 0, trailing: 0))
                 }
             }
+            .id(forceRefreshDate)
             
             Section {
                 Toggle("avoid_tolls", isOn: $shouldAvoidTollRoadsWhileRouting)
@@ -147,6 +178,9 @@ struct SettingsNavigationView: View {
             shouldAvoidMotorwaysWhileRouting = Settings.shouldAvoidMotorwaysWhileRouting
             shouldAvoidStepsWhileRouting = Settings.shouldAvoidStepsWhileRouting
         }
+        .onChange(of: scenePhase) { _ in
+            forceRefreshDate = Date.now
+        }
         .onChange(of: hasPerspectiveViewWhileRouting) { changedHasPerspectiveViewWhileRouting in
             Settings.hasPerspectiveViewWhileRouting = changedHasPerspectiveViewWhileRouting
         }