Merge pull request #58 from jiangpengyun/master

add guard block to prevent possible crash
zenangst · Jan 15, 2019 · c8e02ce · c8e02ce
2 parents eb64f52 + 4a0c8ad
commit c8e02ce
Showing 1 changed file with 8 additions and 3 deletions.
diff --git a/Source/iOS/UIColor+Hue.swift b/Source/iOS/UIColor+Hue.swift
@@ -21,10 +21,15 @@ public extension UIColor {
       }
     }
 
+    guard let intCode = Int(hex, radix: 16) else {
+      self.init(white: 1.0, alpha: 0.0)
+      return
+    }
+
     self.init(
-      red:   CGFloat((Int(hex, radix: 16)! >> 16) & 0xFF) / 255.0,
-      green: CGFloat((Int(hex, radix: 16)! >> 8) & 0xFF) / 255.0,
-      blue:  CGFloat((Int(hex, radix: 16)!) & 0xFF) / 255.0, alpha: 1.0)
+      red:   CGFloat((intCode >> 16) & 0xFF) / 255.0,
+      green: CGFloat((intCode >> 8) & 0xFF) / 255.0,
+      blue:  CGFloat((intCode) & 0xFF) / 255.0, alpha: 1.0)
   }
 
   /// Adjust color based on saturation