From 88674f67b8649536ff9a490f01e4de7ad7f45ae1 Mon Sep 17 00:00:00 2001
From: CoderMuMu <674057373@qq.com>
Date: Sat, 25 Jun 2016 19:18:44 +0800
Subject: [PATCH] =?UTF-8?q?=E3=80=90=E5=8F=91=E7=8E=B0=E4=B8=AAcrash?=
 =?UTF-8?q?=E3=80=91=E7=82=B9=E5=87=BB=E7=AC=AC=E4=B8=80=E4=B8=AA=E3=80=90?=
 =?UTF-8?q?=E6=8C=89=E9=92=AE=E4=B8=8B=E8=BD=BD=E3=80=91--=E3=80=8B?=
 =?UTF-8?q?=E3=80=90=E6=8C=89=E9=92=AE=E5=88=A0=E9=99=A4=E3=80=91--?=
 =?UTF-8?q?=E3=80=8B=E3=80=90=E6=8C=89=E9=92=AE=E6=B8=85=E9=99=A4=E3=80=91?=
 =?UTF-8?q?=20=E7=A8=8B=E5=BA=8F=E5=B4=A9=E6=BA=83?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

原因：是SessionModel对象被释放-》nil
解决方案 ：对SessionModel对象进行非空处理
---
 HSDownloadManager/HSDownloadManager.m | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/HSDownloadManager/HSDownloadManager.m b/HSDownloadManager/HSDownloadManager.m
index 892fdb2..0fe1a28 100644
--- a/HSDownloadManager/HSDownloadManager.m
+++ b/HSDownloadManager/HSDownloadManager.m
@@ -310,7 +310,9 @@ - (void)URLSession:(NSURLSession *)session dataTask:(NSURLSessionDataTask *)data
     NSUInteger expectedSize = sessionModel.totalLength;
     CGFloat progress = 1.0 * receivedSize / expectedSize;
 
-    sessionModel.progressBlock(receivedSize, expectedSize, progress);
+    if (sessionModel) {
+        sessionModel.progressBlock(receivedSize, expectedSize, progress);
+    }
 }
 
 /**