From a73a02d83ba6a29118e6b850b81c2a7cf96afb0e Mon Sep 17 00:00:00 2001
From: nea <tucao@CPU12008s-Mac-mini.local>
Date: Wed, 26 Sep 2018 15:52:52 +0700
Subject: [PATCH] Fixed crash #431

---
 ZXingObjC/client/ZXCapture.m | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ZXingObjC/client/ZXCapture.m b/ZXingObjC/client/ZXCapture.m
index a7a07b0a2..f3d3c0ed0 100644
--- a/ZXingObjC/client/ZXCapture.m
+++ b/ZXingObjC/client/ZXCapture.m
@@ -514,7 +514,7 @@ - (void)replaceInput {
   }
 
   if (self.input) {
-    if (self.sessionPreset) {
+    if (!self.sessionPreset) {
       self.sessionPreset = AVCaptureSessionPreset1280x720;
     }
     self.session.sessionPreset = self.sessionPreset;