From c492d894d5d354f756bae730722e35e1b42363b2 Mon Sep 17 00:00:00 2001
From: Rossen Hristov <rossen.hristov@telerik.com>
Date: Fri, 18 Mar 2016 15:27:28 +0200
Subject: [PATCH] Fix NSRangeException when typing in a TextField with
 formatted text

Fixes #1792
---
 ui/text-field/text-field.ios.ts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/ui/text-field/text-field.ios.ts b/ui/text-field/text-field.ios.ts
index a1c41b568..700b65746 100644
--- a/ui/text-field/text-field.ios.ts
+++ b/ui/text-field/text-field.ios.ts
@@ -82,8 +82,10 @@ class UITextFieldDelegateImpl extends NSObject implements UITextFieldDelegate {
                     owner._onPropertyChangedFromNative(TextBase.textProperty, replacementString);
                 }
                 else {
-                    let newText = NSString.alloc().initWithString(textField.text).stringByReplacingCharactersInRangeWithString(range, replacementString);
-                    owner._onPropertyChangedFromNative(TextBase.textProperty, newText);
+                    if (range.location <= textField.text.length) {
+                        let newText = NSString.alloc().initWithString(textField.text).stringByReplacingCharactersInRangeWithString(range, replacementString);
+                        owner._onPropertyChangedFromNative(TextBase.textProperty, newText);
+                    }
                 }
             }
         }