2021-03-25 1.增加相关接口

JLChen

2021-03-25 f5d70cb8d5407e1aeaa596976639837151c9c909

 HDL-ON_iOS/Scan.cs

@@ -35,7 +35,6 @@
                var bOn = false;
                mZXingOverlayView.OnCancel += () =>
                {

                    scanner?.Cancel();
                };