Merge pull request #31 from iWECon/compatible_flexlayout2

Compatible FlexLayout

Author: iwecon

Sources/StackKit/HStackView.swift

@@ -122,9 +122,7 @@ open class HStackView: UIView, StackView {
     }
 
     open override func sizeThatFits(_ size: CGSize) -> CGSize {
-        setNeedsLayout()
-        layoutIfNeeded()
-        
+        layoutSubviews()
         return contentSize
     }
 

Sources/StackKit/VStackView.swift

@@ -122,9 +122,7 @@ open class VStackView: UIView, StackView {
     }
 
     open override func sizeThatFits(_ size: CGSize) -> CGSize {
-        setNeedsLayout()
-        layoutIfNeeded()
-        
+        layoutSubviews()
         return contentSize
     }
 

Sources/StackKit/WrapStackView.swift

@@ -215,9 +215,7 @@ open class WrapStackView: UIView {
     }
 
     open override func sizeThatFits(_ size: CGSize) -> CGSize {
-        setNeedsLayout()
-        layoutIfNeeded()
-        
+        layoutSubviews()
         let effectiveViewsSize = effectiveSubviews.map({ $0.frame }).reduce(CGRect.zero) { result, rect in
             result.union(rect)
         }.size