From 7c2a7ff2ca21f08bdea60b0bc7b8be7c80a637fd Mon Sep 17 00:00:00 2001
From: Wonyoung Ju <getogrand@gmail.com>
Date: Mon, 15 Jul 2019 10:58:40 +0900
Subject: [PATCH] Remove UIView.init() is called in outside of the main thread

---
 Sources/Layouts/LabelLayout.swift | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/Sources/Layouts/LabelLayout.swift b/Sources/Layouts/LabelLayout.swift
index d684c6da..4ffab10b 100644
--- a/Sources/Layouts/LabelLayout.swift
+++ b/Sources/Layouts/LabelLayout.swift
@@ -165,7 +165,20 @@ open class LabelLayout<Label: UILabel>: BaseLayout<Label>, ConfigurableLayout {
 
 public class LabelLayoutDefaults {
     public static let defaultNumberOfLines = 0
-    public static let defaultFont = UILabel().font ?? UIFont.systemFont(ofSize: 17)
+    private static var _defaultFont: UIFont?
+    public static var defaultFont: UIFont {
+        if Thread.isMainThread {
+            return UILabel().font ?? UIFont.systemFont(ofSize: 17)
+        }
+        let dispatchGroup = DispatchGroup()
+        dispatchGroup.enter()
+        DispatchQueue.main.async {
+            _defaultFont = UILabel().font ?? UIFont.systemFont(ofSize: 17)
+            dispatchGroup.leave()
+        }
+        dispatchGroup.wait()
+        return _defaultFont!
+    }
     public static let defaultAlignment = Alignment.topLeading
     public static let defaultLineBreakMode = NSLineBreakMode.byTruncatingTail
     public static let defaultFlexibility = Flexibility.flexible