Close scanning programmatically

android/src/main/java/com/amolg/flutterbarcodescanner/BarcodeCaptureActivity.java

@@ -20,6 +20,7 @@
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.Dialog;
+import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
@@ -100,6 +101,17 @@ enum USE_FLASH {
 
     private int flashStatus = USE_FLASH.OFF.ordinal();
 
+    private BroadcastReceiver finishBroadcast;
+
+    @Override
+    public Intent registerReceiver(BroadcastReceiver receiver, IntentFilter filter) {
+        if (Build.VERSION.SDK_INT >= 34 && getApplicationInfo().targetSdkVersion >= 34) {
+            int RECEIVER_EXPORTED = 2;
+            return super.registerReceiver(receiver, filter, RECEIVER_EXPORTED);
+        }
+        return super.registerReceiver(receiver, filter);
+    }
+
     /**
      * Initializes the UI and creates the detector pipeline.
      */
@@ -253,6 +265,17 @@ private void createCameraSource(boolean autoFocus, boolean useFlash, int cameraF
     protected void onResume() {
         super.onResume();
         startCameraSource();
+
+        finishBroadcast = new BroadcastReceiver() {
+            @Override
+            public void onReceive(Context arg0, Intent intent) {
+                String action = intent.getAction();
+                if (action.equals("finishCapture")) {
+                    finish();
+                }
+            }
+        };
+        registerReceiver(finishBroadcast, new IntentFilter("finishCapture"));
     }
 
     /**
@@ -264,6 +287,8 @@ protected void onPause() {
         if (mPreview != null) {
             mPreview.stop();
         }
+
+        unregisterReceiver(finishBroadcast);
     }
 
     /**
@@ -533,4 +558,4 @@ public void onBarcodeDetected(Barcode barcode) {
             }
         }
     }
-}
+}

android/src/main/java/com/amolg/flutterbarcodescanner/FlutterBarcodeScannerPlugin.java

@@ -92,6 +92,11 @@ public static void registerWith(final PluginRegistry.Registrar registrar) {
     public void onMethodCall(@NonNull MethodCall call, @NonNull Result result) {
         try {
             pendingResult = result;
+
+            if (call.method.equals("dismiss")) {
+                activity.sendBroadcast(new Intent("finishCapture"));
+                return;
+            }
 
             if (call.method.equals("scanBarcode")) {
                 if (!(call.arguments instanceof Map)) {
@@ -198,7 +203,9 @@ public static void onBarcodeScanReceiver(final Barcode barcode) {
                 activity.runOnUiThread(new Runnable() {
                     @Override
                     public void run() {
-                        barcodeStream.success(barcode.rawValue);
+                        if (barcodeStream != null) {
+                            barcodeStream.success(barcode.rawValue);
+                        }
                     }
                 });
             }

ios/Classes/SwiftFlutterBarcodeScannerPlugin.swift

@@ -22,6 +22,7 @@ public class SwiftFlutterBarcodeScannerPlugin: NSObject, FlutterPlugin, ScanBarc
     public static var isContinuousScan:Bool=false
     static var barcodeStream:FlutterEventSink?=nil
     public static var scanMode = ScanMode.QR.index
+    static var _controller: BarcodeScannerViewController?;
 
     public static func register(with registrar: FlutterPluginRegistrar) {
         viewController = (UIApplication.shared.delegate?.window??.rootViewController)!
@@ -52,11 +53,19 @@ public class SwiftFlutterBarcodeScannerPlugin: NSObject, FlutterPlugin, ScanBarc
     }
 
     public static func onBarcodeScanReceiver( barcode:String){
-        barcodeStream!(barcode)
+        if let stream = barcodeStream {
+            stream(barcode)
+        }
     }
 
     public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
         let args:Dictionary<String, AnyObject> = call.arguments as! Dictionary<String, AnyObject>;
+
+        if let dismissScanner = args["dismissScanner"] as? String{
+            SwiftFlutterBarcodeScannerPlugin._controller?.dismiss(animated: true);
+            return;
+        }
+
         if let colorCode = args["lineColor"] as? String{
             SwiftFlutterBarcodeScannerPlugin.lineColor = colorCode
         }else {
@@ -90,6 +99,7 @@ public class SwiftFlutterBarcodeScannerPlugin: NSObject, FlutterPlugin, ScanBarc
 
         pendingResult=result
         let controller = BarcodeScannerViewController()
+        SwiftFlutterBarcodeScannerPlugin._controller = controller;
         controller.delegate = self
 
         if #available(iOS 13.0, *) {
@@ -236,6 +246,7 @@ class BarcodeScannerViewController: UIViewController {
     override public func viewDidDisappear(_ animated: Bool){
         // Stop video capture
         captureSession.stopRunning()
+        SwiftFlutterBarcodeScannerPlugin._controller = nil;
     }
 
     // Init UI components needed

lib/flutter_barcode_scanner.dart

@@ -18,6 +18,10 @@ class FlutterBarcodeScanner {
 
   static Stream? _onBarcodeReceiver;
 
+  static dismiss() {
+    _channel.invokeMethod('dismiss', {'dismissScanner': '1'});
+  }
+
   /// Scan with the camera until a barcode is identified, then return.
   ///
   /// Shows a scan line with [lineColor] over a scan window. A flash icon is