CNContactController needs to be presented in a navcontroller with a

translucent navbar.

In cases where we were presenting modally, we can easily modify the
modal to have a translucent navbar.

In the one place we were pushing onto the SignalsNavigationController,
rather than modifying the SNC.isTranslucent and having to clean it up,
I've opted to convert to a modal presentation.

// FREEBIE

Signal/src/AppDelegate.m

@@ -1099,7 +1099,6 @@ static NSTimeInterval launchStartedAt;
     // Resume lazy restore.
     [OWSBackupLazyRestoreJob runAsync];
 #endif
-
 }
 
 - (void)registrationStateDidChange

Signal/src/ViewControllers/AddContactShareToExistingContactViewController.swift

@@ -74,11 +74,19 @@ class AddContactShareToExistingContactViewController: ContactsPicker, ContactsPi
         contactViewController.allowsEditing = true
         contactViewController.delegate = self
 
-        guard let navigationController = self.navigationController else {
-            owsFail("\(logTag) in \(#function) navigationController was unexpectedly nil")
-            return
+        let modal = OWSNavigationController(rootViewController: contactViewController)
+
+        // HACK otherwise CNContactViewController Navbar is shows window background color.
+        // RADAR rdar://28433898 http://www.openradar.me/28433898
+        // CNContactViewController incompatible with opaque navigation bar
+        modal.navigationBar.isTranslucent = true
+        if #available(iOS 10, *) {
+            // Contact navbar is blue in iOS9, so our white text works,
+            // but gray on iOS10+, in which case we want the system default black text.
+            UIUtil.applyDefaultSystemAppearence()
         }
-        navigationController.pushViewController(contactViewController, animated: true)
+
+        self.present(modal, animated: true)
     }
 
     func contactsPicker(_: ContactsPicker, didSelectMultipleContacts contacts: [Contact]) {
@@ -126,8 +134,21 @@ class AddContactShareToExistingContactViewController: ContactsPicker, ContactsPi
             return
         }
 
+        // HACK otherwise CNContactViewController Navbar is shows window background color.
+        // RADAR rdar://28433898 http://www.openradar.me/28433898
+        // CNContactViewController incompatible with opaque navigation bar
+        navigationController.navigationBar.isTranslucent = false
+        if #available(iOS 10, *) {
+            // Contact navbar is blue in iOS9, so our white text works,
+            // but gray on iOS10+, in which case we want the system default black text.
+            UIUtil.applySignalAppearence()
+        }
+
         let previousViewControllerIndex = navigationController.viewControllers.index(before: myIndex)
         let previousViewController = navigationController.viewControllers[previousViewControllerIndex]
-        navigationController.popToViewController(previousViewController, animated: true)
+
+        self.dismiss(animated: false) {
+            navigationController.popToViewController(previousViewController, animated: true)
+        }
     }
 }

Signal/src/ViewControllers/ContactShareViewHelper.swift

@@ -163,12 +163,17 @@ public class ContactShareViewHelper: NSObject, CNContactViewControllerDelegate {
                                                                                  target: self,
                                                                                  action: #selector(didFinishEditingContact))
 
-        // HACK otherwise CNContactViewController Navbar is shown as black.
+        let modal = OWSNavigationController(rootViewController: contactViewController)
+        // HACK otherwise CNContactViewController Navbar is shows window background color.
         // RADAR rdar://28433898 http://www.openradar.me/28433898
         // CNContactViewController incompatible with opaque navigation bar
-        UIUtil.applyDefaultSystemAppearence()
+        modal.navigationBar.isTranslucent = true
+        if #available(iOS 10, *) {
+            // Contact navbar is blue in iOS9, so our white text works,
+            // but gray on iOS10+, in which case we want the system default black text.
+            UIUtil.applyDefaultSystemAppearence()
+        }
 
-        let modal = OWSNavigationController(rootViewController: contactViewController)
         fromViewController.present(modal, animated: true)
     }
 
@@ -189,7 +194,7 @@ public class ContactShareViewHelper: NSObject, CNContactViewControllerDelegate {
         }
 
         let viewController = AddContactShareToExistingContactViewController(contactShare: contactShare)
-
+        UIUtil.applySignalAppearence()
         navigationController.pushViewController(viewController, animated: true)
     }
 

SignalMessaging/Views/ContactsViewHelper.m

@@ -392,19 +392,23 @@ NS_ASSUME_NONNULL_BEGIN
                                         target:fromViewController
                                         action:@selector(didFinishEditingContact)];
 
-    OWSNavigationController *navigationController =
-        [[OWSNavigationController alloc] initWithRootViewController:contactViewController];
+    OWSNavigationController *modal = [[OWSNavigationController alloc] initWithRootViewController:contactViewController];
+
+    // HACK otherwise CNContactViewController Navbar is shows window background color.
+    // RADAR rdar://28433898 http://www.openradar.me/28433898
+    // CNContactViewController incompatible with opaque navigation bar
+    modal.navigationBar.translucent = YES;
+    if (@available(iOS 10, *)) {
+        // Contact navbar is blue in iOS9, so our white tex works,
+        // but gray on iOS10+, in which case we want the system default black text.
+        [UIUtil applyDefaultSystemAppearence];
+    }
 
     // We want the presentation to imply a "replacement" in this case.
     if (shouldEditImmediately) {
-        navigationController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
+        modal.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
     }
-    [fromViewController presentViewController:navigationController animated:YES completion:nil];
-
-    // HACK otherwise CNContactViewController Navbar is shown as black.
-    // RADAR rdar://28433898 http://www.openradar.me/28433898
-    // CNContactViewController incompatible with opaque navigation bar
-    [UIUtil applyDefaultSystemAppearence];
+    [fromViewController presentViewController:modal animated:YES completion:nil];
 }
 
 @end