VoiceOver improvements in Registration flow.

Signal/Registration/UserInterface/RegistrationPermissionsView.swift

@@ -33,9 +33,13 @@ struct RegistrationPermissionsView: View {
     var body: some View {
         VStack {
             VStack(spacing: headerSpacing) {
-                Text(OWSLocalizedString("ONBOARDING_PERMISSIONS_TITLE", comment: "Title of the 'onboarding permissions' view."))
+                Text(OWSLocalizedString(
+                    "ONBOARDING_PERMISSIONS_TITLE",
+                    comment: "Title of the 'onboarding permissions' view."
+                ))
                     .font(.title.weight(.semibold))
                     .lineLimit(1)
+                    .accessibilityAddTraits(.isHeader)
                 Text(OWSLocalizedString("ONBOARDING_PERMISSIONS_PREAMBLE", comment: "Preamble of the 'onboarding permissions' view."))
                     .dynamicTypeSize(...DynamicTypeSize.accessibility1)
             }
@@ -155,6 +159,7 @@ private extension RegistrationPermissionsView {
                     HStack(spacing: 16) {
                         icon
                             .frame(width: 36)
+                            .accessibilityHidden(true)
                         title
                             .font(.headline)
                             .lineLimit(1)
@@ -164,9 +169,11 @@ private extension RegistrationPermissionsView {
                         .font(.subheadline)
                         .foregroundStyle(.secondary)
                 }
+                .accessibilityElement(children: .combine)
             } else {
                 HStack(alignment: .top, spacing: 16) {
                     icon
+                        .accessibilityHidden(true)
                     VStack(alignment: .leading, spacing: 4) {
                         title
                             .font(.headline)
@@ -177,6 +184,7 @@ private extension RegistrationPermissionsView {
                             .layoutPriority(1)
                     }
                 }
+                .accessibilityElement(children: .combine)
             }
         }
     }

Signal/Registration/UserInterface/RegistrationPhoneNumberDiscoverabilityViewController.swift

@@ -184,6 +184,19 @@ private extension RegistrationPhoneNumberDiscoverabilityViewController {
         required init?(coder: NSCoder) {
             fatalError("init(coder:) has not been implemented")
         }
+
+        // MARK: Accessibility
+
+        override var accessibilityLabel: String? {
+            get { phoneNumberDiscoverability.nameForDiscoverability }
+            set { super.accessibilityLabel = newValue }
+        }
+
+        override var accessibilityHint: String? {
+            get { phoneNumberDiscoverability.descriptionForDiscoverability }
+            set { super.accessibilityHint = newValue }
+        }
+
     }
 
     private struct PrivacySettingButtonContentConfiguration: UIContentConfiguration {

Signal/Registration/UserInterface/RegistrationPhoneNumberInputView.swift

@@ -133,12 +133,20 @@ class RegistrationPhoneNumberInputView: UIView {
             chevronIcon.centerYAnchor.constraint(equalTo: container.centerYAnchor),
             chevronIcon.trailingAnchor.constraint(equalTo: container.trailingAnchor),
         ])
-        container.accessibilityIdentifier = "registration.phonenumber.countryCode"
         container.isUserInteractionEnabled = true
         container.addGestureRecognizer(UITapGestureRecognizer(
             target: self,
             action: #selector(didTapCountryCode)
         ))
+
+        container.isAccessibilityElement = true
+        container.accessibilityTraits = .button
+        container.accessibilityIdentifier = "registration.phonenumber.countryCode"
+        container.accessibilityLabel = OWSLocalizedString(
+            "REGISTRATION_DEFAULT_COUNTRY_NAME",
+            comment: "Label for the country code field"
+        )
+
         return container
     }()
 
@@ -160,6 +168,7 @@ class RegistrationPhoneNumberInputView: UIView {
 
     private func update() {
         countryCodeLabel.text = country.plusPrefixedCallingCode
+        countryCodeView.accessibilityValue = countryCodeLabel.text
         nationalNumberView.isEnabled = isEnabled
     }
 

Signal/Registration/UserInterface/RegistrationProfileViewController.swift

@@ -491,6 +491,28 @@ extension RegistrationProfileViewController {
         required init?(coder: NSCoder) {
             fatalError("init(coder:) has not been implemented")
         }
+
+        // MARK: Accessibility
+
+        override var accessibilityLabel: String? {
+            get {
+                OWSLocalizedString(
+                    "REGISTRATION_PROFILE_SETUP_FIND_MY_NUMBER_TITLE",
+                    comment: "During registration, users can choose who can see their phone number."
+                )
+            }
+            set { super.accessibilityLabel = newValue }
+        }
+
+        override var accessibilityValue: String? {
+            get { phoneNumberDiscoverability.nameForDiscoverability }
+            set { super.accessibilityValue = newValue }
+        }
+
+        override var accessibilityHint: String? {
+            get { phoneNumberDiscoverability.descriptionForDiscoverability }
+            set { super.accessibilityHint = newValue }
+        }
     }
 
     private struct PhoneNumberPrivacyButtonContentConfiguration: UIContentConfiguration {

Signal/Registration/UserInterface/RegistrationViewUtil.swift

@@ -44,6 +44,7 @@ extension UILabel {
         result.numberOfLines = 0
         result.lineBreakMode = .byWordWrapping
         result.textAlignment = .center
+        result.accessibilityTraits = [ .staticText, .header ]
         return result
     }
 
@@ -94,6 +95,9 @@ extension UIButton {
             contentView.bottomAnchor.constraint(equalTo: button.bottomAnchor)
         ])
 
+        button.accessibilityLabel = contentConfiguration.title
+        button.accessibilityHint = contentConfiguration.subtitle
+
         return button as! Self
     }
 }