From ab94441095604333029b7fa3df3f0b4072ecef1e Mon Sep 17 00:00:00 2001
From: Andrew Walz <andrewjwalz@gmail.com>
Date: Mon, 24 Apr 2017 13:14:52 -0600
Subject: [PATCH] Adding check for running session before switching camera

---
 Source/SwiftyCamViewController.swift | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Source/SwiftyCamViewController.swift b/Source/SwiftyCamViewController.swift
index 4456e3d..845b7ce 100644
--- a/Source/SwiftyCamViewController.swift
+++ b/Source/SwiftyCamViewController.swift
@@ -489,6 +489,11 @@ open class SwiftyCamViewController: UIViewController {
 			print("[SwiftyCam]: Switching between cameras while recording video is not supported")
 			return
 		}
+        
+        guard session.isRunning == true else {
+            return
+        }
+        
 		switch currentCamera {
 		case .front:
 			currentCamera = .rear