From 67836841117618ce497bfb8be65a813306b2171c Mon Sep 17 00:00:00 2001
From: shihaoguo <gsh901117@gmail.com>
Date: Wed, 27 Nov 2013 15:08:56 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=94=B9=E5=BD=93=E6=96=87=E6=9C=AC?=
 =?UTF-8?q?=E9=95=BF=E5=BA=A6=E4=B8=BA=E9=9B=B6=E6=97=B6crash=E7=9A=84?=
 =?UTF-8?q?=E9=97=AE=E9=A2=98?=
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我是用的时候 集成到tableviewcell中时，会出现crash，所以加入此段代码
---
 TQRichTextView/TQRichTextView.m | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/TQRichTextView/TQRichTextView.m b/TQRichTextView/TQRichTextView.m
index b1491ad..a72ccba 100644
--- a/TQRichTextView/TQRichTextView.m
+++ b/TQRichTextView/TQRichTextView.m
@@ -77,6 +77,10 @@ - (void)drawRect:(CGRect)rect
     {
         CFIndex testLineLength = CTTypesetterSuggestLineBreak(typeSetter,lineRange.location,self.bounds.size.width);
 check:  lineRange = CFRangeMake(lineRange.location,testLineLength);
+        // 防止crash
+        if (lineRange.length<0) {
+            return;
+        }
         CTLineRef line = CTTypesetterCreateLine(typeSetter,lineRange);
         CFArrayRef runs = CTLineGetGlyphRuns(line);