fix

Assets/InfraredProject/WebCamera/Script/ZIM/ScreenLocate.cs

@@ -368,11 +368,14 @@ public partial class ScreenLocate : o0InfraredCameraHandler
             //infraredLocate.SetBrightnessThreshold(redfilterValue);     // 参数是 红外灯的亮度阈值，阈值越小能够检测到的亮度就越低，默认值是0.93
 
             // UI相关
-            infraredLocate.SetSinglePoint(SingleToggle.isOn);
-            SingleToggle.onValueChanged.AddListener((i) =>
+            if (SingleToggle != null) 
             {
-                infraredLocate.SetSinglePoint(i);
-            });
+                infraredLocate.SetSinglePoint(SingleToggle.isOn);
+                SingleToggle.onValueChanged.AddListener((i) =>
+                {
+                    infraredLocate.SetSinglePoint(i);
+                });
+            }
         }
     }