Fixed iOS not disposing camera

android/src/main/kotlin/net/touchcapture/qr/flutterqr/QRView.kt

@@ -70,6 +70,8 @@ class QRView(messenger: BinaryMessenger, id: Int, private val params: HashMap<St
             "flipCamera" -> flipCamera(result)
             "toggleFlash" -> toggleFlash(result)
             "pauseCamera" -> pauseCamera(result)
+            // Stopping camera is the same as pausing camera
+            "stopCamera" -> pauseCamera(result)
             "resumeCamera" -> resumeCamera(result)
             "requestPermissions" -> checkAndRequestPermission(result)
             "getCameraInfo" -> getCameraInfo(result)

ios/Classes/QRView.swift

@@ -59,6 +59,8 @@ public class QRView:NSObject,FlutterPlatformView {
                     self?.toggleFlash(result)
                 case "pauseCamera":
                     self?.pauseCamera(result)
+                case "stopCamera":
+                    self?.stopCamera(result)
                 case "resumeCamera":
                     self?.resumeCamera(result)
                 case "getCameraInfo":
@@ -185,7 +187,7 @@ public class QRView:NSObject,FlutterPlatformView {
     
     }
     
-    func stopScan(_ result: @escaping FlutterResult){
+    func stopCamera(_ result: @escaping FlutterResult){
         MTBBarcodeScanner.requestCameraPermission(success: { permissionGranted in
             if permissionGranted {
                 if let sc: MTBBarcodeScanner = self.scanner {

lib/src/qr_code_scanner.dart

@@ -251,7 +251,7 @@ class QRViewController {
     }
   }
 
-  /// Pauses barcode scanning
+  /// Pauses the camera and barcode scanning
   Future<void> pauseCamera() async {
     try {
       await _channel.invokeMethod('pauseCamera');
@@ -260,6 +260,15 @@ class QRViewController {
     }
   }
 
+  /// Stops barcode scanning and the camera
+  Future<void> stopCamera() async {
+    try {
+      await _channel.invokeMethod('stopCamera');
+    } on PlatformException catch (e) {
+      throw CameraException(e.code, e.message);
+    }
+  }
+
   /// Resumes barcode scanning
   Future<void> resumeCamera() async {
     try {
@@ -280,8 +289,9 @@ class QRViewController {
     }
   }
 
-  /// Disposes the barcode stream.
+  /// Stops the camera and disposes the barcode stream.
   void dispose() {
+    stopCamera();
     _scanUpdateController.close();
   }