solved range warning

AttributedTextView.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
  s.name = 'AttributedTextView'
- s.version = '0.9.1'
+ s.version = '0.9.2'
  s.license = { :type => "MIT", :file => "LICENSE" }
  s.summary = 'Easiest way to create an attributed UILabel or UITextView (with support for multiple links and HTML)'
  s.homepage = 'https://github.com/evermeer/AttributedTextView'

AttributedTextView.xcodeproj/project.pbxproj

@@ -41,6 +41,7 @@
 		7FA506E61E695CEB003D83E7 /* AttributedLabel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7FA506E51E695CEB003D83E7 /* AttributedLabel.swift */; };
 		7FA506E81E696EA2003D83E7 /* AttributedTextViewSubclassDemo.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7FA506E71E696EA2003D83E7 /* AttributedTextViewSubclassDemo.swift */; };
 		7FA506EA1E696EBD003D83E7 /* AttributedLabelSubclassDemo.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7FA506E91E696EBD003D83E7 /* AttributedLabelSubclassDemo.swift */; };
+		7FA64F2E20D7DA7200E9345A /* String+NSRange.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7FA64F2D20D7DA7200E9345A /* String+NSRange.swift */; };
 		7FD407B01E0C280E00AEBF1B /* Sample5.png in Resources */ = {isa = PBXBuildFile; fileRef = 7FD407AF1E0C280E00AEBF1B /* Sample5.png */; };
 /* End PBXBuildFile section */
 
@@ -71,6 +72,7 @@
 		7FA506E51E695CEB003D83E7 /* AttributedLabel.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AttributedLabel.swift; sourceTree = "<group>"; };
 		7FA506E71E696EA2003D83E7 /* AttributedTextViewSubclassDemo.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AttributedTextViewSubclassDemo.swift; sourceTree = "<group>"; };
 		7FA506E91E696EBD003D83E7 /* AttributedLabelSubclassDemo.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AttributedLabelSubclassDemo.swift; sourceTree = "<group>"; };
+		7FA64F2D20D7DA7200E9345A /* String+NSRange.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "String+NSRange.swift"; sourceTree = "<group>"; };
 		7FD407AF1E0C280E00AEBF1B /* Sample5.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = Sample5.png; sourceTree = "<group>"; };
 		7FD880471DEF968500D299E1 /* UIKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = UIKit.framework; path = System/Library/Frameworks/UIKit.framework; sourceTree = SDKROOT; };
 		7FDAE1351DEF192A00CB46B6 /* Sample1.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = Sample1.png; sourceTree = "<group>"; };
@@ -170,6 +172,7 @@
 				7FA506E51E695CEB003D83E7 /* AttributedLabel.swift */,
 				1304F89F1F86096800347B42 /* CGFloatDP.swift */,
 				7F198B63205035240009ACF3 /* NSAttributedString+Html.swift */,
+				7FA64F2D20D7DA7200E9345A /* String+NSRange.swift */,
 			);
 			name = Core;
 			sourceTree = "<group>";
@@ -455,6 +458,7 @@
 				7F1C64871DEC722F002A1A59 /* AttributedTextView.swift in Sources */,
 				1304F8A01F86096800347B42 /* CGFloatDP.swift in Sources */,
 				7F198B64205035240009ACF3 /* NSAttributedString+Html.swift in Sources */,
+				7FA64F2E20D7DA7200E9345A /* String+NSRange.swift in Sources */,
 				7F1C64791DEC722F002A1A59 /* Attributer.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;

Sources/Attributer.swift

@@ -527,8 +527,7 @@ open class Attributer {
      */
     open func makeInteract(_ callback: @escaping ((_ link: String) -> ())) -> Attributer {
         for nsRange in self.ranges {
-            let iRange = self.attributedText.string.range(from: nsRange)
-            let unEscapedString = self.attributedText.string.substring(with:  iRange!)
+            let unEscapedString = (self.attributedText.string as NSString).substring(with: nsRange)
                 let escapedString = unEscapedString.addingPercentEncoding(withAllowedCharacters: NSCharacterSet.urlHostAllowed) ?? ""
                 self.attributedText.addAttribute(NSAttributedStringKey.link, value: "AttributedTextView:\(escapedString)", range: nsRange)
                 urlCallbacks[unEscapedString] = callback

Sources/String+NSRange.swift

@@ -0,0 +1,16 @@
+//
+//  String+NSRange.swift
+//  AttributedTextView-iOS
+//
+//  Created by Edwin Vermeer on 18-06-18.
+//  Copyright © 2018 evermeer. All rights reserved.
+//
+
+import Foundation
+
+public extension String {
+    func substring(with nsrange: NSRange) -> Substring? {
+        guard let range = Range(nsrange, in: self) else { return nil }
+        return self[range]
+    }
+}