updated NavigationItem to reload the NavigationBar subviews when the title or detail values change

Sources/iOS/NavigationItem.swift

@@ -64,6 +64,14 @@ public class MaterialAssociatedObjectNavigationItem {
 		prepareDetailLabel()
 	}
     
+    /// Reloads the subviews for the NavigationBar.
+    internal func reloadNavigationBar() {
+        guard let navigationBar = contentView?.superview?.superview as? NavigationBar else {
+            return
+        }
+        navigationBar.layoutSubviews()
+    }
+	
 	/// Prepares the titleLabel.
 	private func prepareTitleLabel() {
 		titleLabel = UILabel()
@@ -119,18 +127,14 @@ public extension UINavigationItem {
 		}
 		set(value) {
 			titleLabel.text = value
+            item.reloadNavigationBar()
 		}
 	}
 	
 	/// Title Label.
-	public internal(set) var titleLabel: UILabel {
-		get {
+	public var titleLabel: UILabel {
 		return item.titleLabel
 	}
-		set(value) {
-			item.titleLabel = value
-		}
-	}
 	
 	/// Detail text.
 	public var detail: String? {
@@ -139,18 +143,14 @@ public extension UINavigationItem {
 		}
 		set(value) {
 			detailLabel.text = value
+            item.reloadNavigationBar()
 		}
 	}
 	
 	/// Detail Label.
-	public internal(set) var detailLabel: UILabel {
-		get {
+	public var detailLabel: UILabel {
 		return item.detailLabel
 	}
-		set(value) {
-			item.detailLabel = value
-		}
-	}
 	
 	/// Left side UIControls.
 	public var leftControls: Array<UIControl>? {