#7 contentSize is not dispatched the first time

Author: malcommac

ScrollStackController.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "ScrollStackController"
-  s.version      = "1.2.0"
+  s.version      = "1.2.1"
   s.summary      = "Create complex scrollable layout using UIViewController and simplify your code"
   s.homepage     = "https://github.com/malcommac/ScrollStackController"
   s.license      = { :type => "MIT", :file => "LICENSE" }

ScrollStackController.xcodeproj/project.pbxproj

@@ -623,7 +623,7 @@
 				INFOPLIST_FILE = ScrollStackControllerDemo/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
-				MARKETING_VERSION = 1.2.0;
+				MARKETING_VERSION = 1.2.1;
 				MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
 				MTL_FAST_MATH = YES;
 				PRODUCT_BUNDLE_IDENTIFIER = com.danielemargutti.ScrollStackControllerDemo;
@@ -651,7 +651,7 @@
 				INFOPLIST_FILE = ScrollStackControllerDemo/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
-				MARKETING_VERSION = 1.2.0;
+				MARKETING_VERSION = 1.2.1;
 				MTL_FAST_MATH = YES;
 				PRODUCT_BUNDLE_IDENTIFIER = com.danielemargutti.ScrollStackControllerDemo;
 				PRODUCT_NAME = "$(TARGET_NAME)";

ScrollStackController.xcodeproj/project.xcworkspace/xcuserdata/daniele.xcuserdatad/UserInterfaceState.xcuserstate

@@ -103,7 +103,7 @@ class ViewController: UIViewController, ScrollStackControllerDelegate {
     }
 
     func scrollStackContentSizeDidChange(_ stackView: ScrollStack, from oldValue: CGSize, to newValue: CGSize) {
-       // debugPrint("Content size did change from \(oldValue) to \(newValue)")
+        // debugPrint("Content size did change from \(oldValue) to \(newValue)")
     }
 
 }

ScrollStackControllerDemo/ViewController.swift

@@ -51,7 +51,7 @@ open class ScrollStack: UIScrollView, UIScrollViewDelegate {
     public static let defaultRowHighlightColor = UIColor(red: 0.85, green: 0.85, blue: 0.85, alpha: 1)
 
     /// Cached content size for did change content size callback in scrollstack delegate.
-    private var cachedContentSize: CGSize?
+    private var cachedContentSize: CGSize = .zero
 
     // MARK: Public Properties
 
@@ -965,10 +965,9 @@ open class ScrollStack: UIScrollView, UIScrollViewDelegate {
 
         stackDelegate.scrollStackDidUpdateLayout(self)
 
-        if let oldContentSize = cachedContentSize, oldContentSize != self.contentSize {
-            stackDelegate.scrollStackContentSizeDidChange(self, from: oldContentSize, to: contentSize)
+        if cachedContentSize != self.contentSize {
+            stackDelegate.scrollStackContentSizeDidChange(self, from: cachedContentSize, to: contentSize)
         }
-        
         cachedContentSize = self.contentSize
     }