added camera face android

Author: CodingWithTashi

CHANGELOG.md

@@ -1,3 +1,10 @@
+## 2.0.0
+* `SimpleBarcodeScannerPage` is now depreciated, use `SimpleBarcodeScanner` instead
+* Scan barcode with `SimpleBarcodeScanner` `scanBarcode` method
+* Stream barcode with `SimpleBarcodeScanner` `streamBarcode` method
+* Added `cameraFace` to switch between front and back camera,works only on android 
+* Updated example page
+
 ## 0.1.9
 * `SimpleBarcodeScannerPage` is now depreciated, use `SimpleBarcodeScanner` instead
 * Scan barcode with `SimpleBarcodeScanner` `scanBarcode` method

README.md

@@ -42,19 +42,47 @@ import 'package:simple_barcode_scanner/simple_barcode_scanner.dart';
 
 ```
 ## Usage   
-
+1. To scan barcode
 ```dart
    ElevatedButton(
               onPressed: () async {
-                var res = await Navigator.push(
+
+                    String? res = await SimpleBarcodeScanner.scanBarcode(
                     context,
-                    MaterialPageRoute(
-                      builder: (context) => const SimpleBarcodeScannerPage(),
-                    ));
-                setState(() {
-                  if (res is String) {
-                    result = res;
-                  }
+                    barcodeAppBar: const BarcodeAppBar(
+                    appBarTitle: 'Test',
+                    centerTitle: false,
+                    enableBackButton: true,
+                    backButtonIcon: Icon(Icons.arrow_back_ios),
+                    ),
+                    isShowFlashIcon: true,
+                    delayMillis: 2000,
+                    cameraFace: CameraFace.front,
+                    );
+                    setState(() {
+                    result = res as String;
+                    });
+              },
+              child: const Text('Open Scanner'),
+            )
+```   
+2. To stream barcode
+```dart
+   ElevatedButton(
+              onPressed: () async {
+
+                SimpleBarcodeScanner.streamBarcode(
+                context,
+                barcodeAppBar: const BarcodeAppBar(
+                appBarTitle: 'Test',
+                centerTitle: false,
+                enableBackButton: true,
+                backButtonIcon: Icon(Icons.arrow_back_ios),
+                ),
+                isShowFlashIcon: true,
+                delayMillis: 2000,
+                ).listen((event) {
+                print("Stream Barcode Result: $event");
                 });
               },
               child: const Text('Open Scanner'),
@@ -66,7 +94,8 @@ import 'package:simple_barcode_scanner/simple_barcode_scanner.dart';
 
 ## Note
 Feel free to fork and send pull request.
-If you have any questions, feedback or ideas,You can [create an
+* iOS support may be delayed as I currently do not have access to an iOS device for testing. Contributions and testing help from the community are welcome!
+* If you have any questions, feedback or ideas,You can [create an
 issue](https://github.com/CodingWithTashi/simple_barcode_scanner/issues/new). If you enjoy this
 project, I'd appreciate your [🌟 on GitHub](https://github.com/CodingWithTashi/simple_barcode_scanner/).   
 

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

@@ -57,6 +57,7 @@
 import com.google.android.gms.vision.barcode.BarcodeDetector;
 
 import java.io.IOException;
+import java.util.Objects;
 
 /**
  * Activity for the multi-tracker app.  This app detects barcodes and displays the value with the
@@ -86,7 +87,7 @@ public final class BarcodeCaptureActivity extends AppCompatActivity implements B
     private ImageView imgViewSwitchCamera;
 
     public static int SCAN_MODE = SCAN_MODE_ENUM.QR.ordinal();
-
+    private int cameraFacing = CameraSource.CAMERA_FACING_BACK;
     public enum SCAN_MODE_ENUM {
         QR,
         BARCODE,
@@ -121,8 +122,10 @@ public void onCreate(Bundle icicle) {
             setContentView(R.layout.barcode_capture);
 
             String buttonText = "";
+            String cameraFacingText = "";
             try {
                     buttonText = (String) getIntent().getStringExtra("cancelButtonText");
+                cameraFacingText = (String) getIntent().getStringExtra("cameraFacingText");
         } catch (Exception e) {
             buttonText = "Cancel";
             Log.e("BCActivity:onCreate()", "onCreate: " + e.getLocalizedMessage());
@@ -145,12 +148,13 @@ public void onCreate(Bundle icicle) {
         // read parameters from the intent used to launch the activity.
         boolean autoFocus = true;
         boolean useFlash = false;
+        cameraFacing = Objects.equals(cameraFacingText, "FRONT") ?CameraSource.CAMERA_FACING_FRONT:CameraSource.CAMERA_FACING_BACK;
 
         // Check for the camera permission before accessing the camera.  If the
         // permission is not granted yet, request permission.
         int rc = ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA);
             if (rc == PackageManager.PERMISSION_GRANTED) {
-                createCameraSource(autoFocus, useFlash, CameraSource.CAMERA_FACING_BACK);
+                createCameraSource(autoFocus, useFlash, cameraFacing);
             } else {
                 requestCameraPermission();
             }
@@ -321,7 +325,7 @@ public void onRequestPermissionsResult(int requestCode,
             // we have permission, so create the camerasource
             boolean autoFocus = true;
             boolean useFlash = false;
-            createCameraSource(autoFocus, useFlash, CameraSource.CAMERA_FACING_BACK);
+            createCameraSource(autoFocus, useFlash, cameraFacing);
             return;
         }
 
@@ -429,10 +433,10 @@ public void onClick(View v) {
             onBackPressed();
 
         } else if (i == R.id.imgViewSwitchCamera) {
-            int currentFacing = mCameraSource.getCameraFacing();
+            cameraFacing = mCameraSource.getCameraFacing();
             boolean autoFocus = mCameraSource.getFocusMode() != null;
             boolean useFlash = flashStatus == USE_FLASH.ON.ordinal();
-            createCameraSource(autoFocus, useFlash, getInverseCameraFacing(currentFacing));
+            createCameraSource(autoFocus, useFlash, getInverseCameraFacing(cameraFacing));
             startCameraSource();
         }
     }

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

@@ -48,6 +48,7 @@ public class FlutterBarcodeScannerPlugin implements MethodCallHandler, ActivityR
     public static String lineColor = "";
     public static boolean isShowFlashIcon = false;
     public static boolean isContinuousScan = false;
+    public static String cameraFacingText = "";
     public static int delayMillis = 0;
     static EventChannel.EventSink barcodeStream;
     private EventChannel eventChannel;
@@ -116,21 +117,24 @@ public void onMethodCall(@NonNull MethodCall call, @NonNull Result result) {
 
                 isContinuousScan = (boolean) arguments.get("isContinuousScan");
 
+                cameraFacingText = (String) arguments.get("cameraFacingText");
+
                 if (null != arguments.get("delayMillis"))
                     delayMillis = (int) arguments.get("delayMillis");
 
 
-                startBarcodeScannerActivityView((String) arguments.get("cancelButtonText"), isContinuousScan);
+                startBarcodeScannerActivityView((String) arguments.get("cancelButtonText"), isContinuousScan,cameraFacingText);
             }
         } catch (Exception e) {
             Log.e(TAG, "onMethodCall: " + e.getLocalizedMessage());
         }
     }
 
-    private void startBarcodeScannerActivityView(String buttonText, boolean isContinuousScan) {
+    private void startBarcodeScannerActivityView(String buttonText, boolean isContinuousScan, String cameraFacingText) {
         try {
             Intent intent = new Intent(activity, BarcodeCaptureActivity.class).putExtra("cancelButtonText", buttonText)
-                    .putExtra("delayMillis", delayMillis);
+                    .putExtra("delayMillis", delayMillis)
+                    .putExtra("cameraFacingText", cameraFacingText);
             if (isContinuousScan) {
                 activity.startActivity(intent);
             } else {

example/lib/main.dart

@@ -49,6 +49,7 @@ class _HomePageState extends State<HomePage> {
                   ),
                   isShowFlashIcon: true,
                   delayMillis: 2000,
+                  cameraFace: CameraFace.front,
                 );
                 setState(() {
                   result = res as String;

lib/enum.dart

@@ -1 +1,3 @@
 enum ScanType { qr, barcode, defaultMode }
+
+enum CameraFace { back, front }

lib/flutter_barcode_scanner.dart

@@ -25,8 +25,13 @@ class FlutterBarcodeScanner {
   /// Shows a scan line with [lineColor] over a scan window. A flash icon is
   /// displayed if [isShowFlashIcon] is true. The text of the cancel button can
   /// be customized with the [cancelButtonText] string.
-  static Future<String> scanBarcode(String lineColor, String cancelButtonText,
-      bool isShowFlashIcon, ScanMode scanMode, int? delayMillis) async {
+  static Future<String> scanBarcode(
+      String lineColor,
+      String cancelButtonText,
+      bool isShowFlashIcon,
+      ScanMode scanMode,
+      int? delayMillis,
+      String cameraFace) async {
     if (cancelButtonText.isEmpty) {
       cancelButtonText = 'Cancel';
     }
@@ -38,7 +43,8 @@ class FlutterBarcodeScanner {
       'isShowFlashIcon': isShowFlashIcon,
       'isContinuousScan': false,
       'scanMode': scanMode.index,
-      'delayMillis': delayMillis ?? 0
+      'delayMillis': delayMillis ?? 0,
+      'cameraFacingText': cameraFace
     };
 
     /// Get barcode scan result
@@ -59,7 +65,8 @@ class FlutterBarcodeScanner {
       String cancelButtonText,
       bool isShowFlashIcon,
       ScanMode scanMode,
-      int? delayMillis) {
+      int? delayMillis,
+      String cameraFace) {
     if (cancelButtonText.isEmpty) {
       cancelButtonText = 'Cancel';
     }
@@ -71,7 +78,8 @@ class FlutterBarcodeScanner {
       'isShowFlashIcon': isShowFlashIcon,
       'isContinuousScan': true,
       'scanMode': scanMode.index,
-      'delayMillis': delayMillis ?? 0
+      'delayMillis': delayMillis ?? 0,
+      'cameraFacingText': cameraFace
     };
 
     // Invoke method to open camera, and then create an event channel which will

lib/screens/io_device.dart

@@ -14,6 +14,7 @@ class BarcodeScanner extends StatelessWidget {
   final String cancelButtonText;
   final bool isShowFlashIcon;
   final ScanType scanType;
+  final CameraFace cameraFace;
   final Function(String) onScanned;
   final String? appBarTitle;
   final bool? centerTitle;
@@ -27,6 +28,7 @@ class BarcodeScanner extends StatelessWidget {
       required this.cancelButtonText,
       required this.isShowFlashIcon,
       required this.scanType,
+      this.cameraFace = CameraFace.back,
       required this.onScanned,
       this.child,
       this.appBarTitle,
@@ -79,14 +81,25 @@ class BarcodeScanner extends StatelessWidget {
 
   _scanBarcodeForMobileAndTabDevices(ScanMode scanMode) async {
     String barcode = await FlutterBarcodeScanner.scanBarcode(
-        lineColor, cancelButtonText, isShowFlashIcon, scanMode, delayMillis);
+      lineColor,
+      cancelButtonText,
+      isShowFlashIcon,
+      scanMode,
+      delayMillis,
+      cameraFace.name.toUpperCase(),
+    );
     onScanned(barcode);
   }
 
   void _streamBarcodeForMobileAndTabDevices(ScanMode scanMode) {
     FlutterBarcodeScanner.getBarcodeStreamReceiver(
-            lineColor, cancelButtonText, isShowFlashIcon, scanMode, delayMillis)
-        ?.listen((barcode) {
+      lineColor,
+      cancelButtonText,
+      isShowFlashIcon,
+      scanMode,
+      delayMillis,
+      cameraFace.name.toUpperCase(),
+    )?.listen((barcode) {
       if (barcode != null) {
         barcode == kCancelValue ? onClose?.call() : onScanned(barcode);
       }

lib/screens/unsupported.dart

@@ -7,6 +7,7 @@ class BarcodeScanner extends StatelessWidget {
   final String cancelButtonText;
   final bool isShowFlashIcon;
   final ScanType scanType;
+  final CameraFace cameraFace;
   final Function(String) onScanned;
   final String? appBarTitle;
   final bool? centerTitle;
@@ -20,6 +21,7 @@ class BarcodeScanner extends StatelessWidget {
       this.cancelButtonText = "Cancel",
       this.isShowFlashIcon = false,
       this.scanType = ScanType.barcode,
+      this.cameraFace = CameraFace.back,
       required this.onScanned,
       this.appBarTitle,
       this.child,

lib/screens/web.dart

@@ -14,6 +14,7 @@ class BarcodeScanner extends StatelessWidget {
   final String cancelButtonText;
   final bool isShowFlashIcon;
   final ScanType scanType;
+  final CameraFace cameraFace;
   final Function(String) onScanned;
   final String? appBarTitle;
   final bool? centerTitle;
@@ -28,6 +29,7 @@ class BarcodeScanner extends StatelessWidget {
     required this.cancelButtonText,
     required this.isShowFlashIcon,
     required this.scanType,
+    this.cameraFace = CameraFace.back,
     required this.onScanned,
     this.appBarTitle,
     this.centerTitle,