修改扫码后的操作

CHANGELOG.md

@@ -14,3 +14,7 @@
 
 ## 1.0.0+1
 
+## 1.0.1
+
+修改扫码后的操作
+

README.md

@@ -36,10 +36,12 @@ QrReaderView(
 ``` dart
 Widget build(BuildContext context) {
     return new Scaffold(
-      body: QrcodeReaderView(onScan: onScan),
+      body: QrcodeReaderView(key: qrViewKey, onScan: onScan),
     );
 }
 
+GlobalKey<QrcodeReaderViewState> qrViewKey = GlobalKey();
+
 Future onScan(String data) async {
     await showCupertinoDialog(
       context: context,
@@ -56,5 +58,6 @@ Future onScan(String data) async {
         );
       },
     );
+    qrViewKey.currentState.startScan();
 }
 ```

example/pubspec.lock

@@ -47,7 +47,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "1.0.0+1"
+    version: "1.0.1"
   flutter_test:
     dependency: "direct dev"
     description: flutter

lib/qrcode_reader_view.dart

@@ -13,19 +13,25 @@ class QrcodeReaderView extends StatefulWidget {
   final Color boxLineColor;
   final Widget helpWidget;
   QrcodeReaderView({
-    Key key,
-    @required this.onScan,
-    this.headerWidget,
-    this.boxLineColor = Colors.cyanAccent,
-    this.helpWidget,
-    this.scanBoxRatio = 0.85,
-  }) : super(key: key);
+                     Key key,
+                     @required this.onScan,
+                     this.headerWidget,
+                     this.boxLineColor = Colors.cyanAccent,
+                     this.helpWidget,
+                     this.scanBoxRatio = 0.85,
+                   }) : super(key: key);
 
   @override
-  _QrcodeReaderViewState createState() => new _QrcodeReaderViewState();
+  QrcodeReaderViewState createState() => new QrcodeReaderViewState();
 }
 
-class _QrcodeReaderViewState extends State<QrcodeReaderView> with TickerProviderStateMixin {
+/// 扫码后的后续操作
+/// ```dart
+/// GlobalKey<QrcodeReaderViewState> qrViewKey = GlobalKey();
+/// qrViewKey.currentState.startScan();
+/// ```
+class QrcodeReaderViewState extends State<QrcodeReaderView>
+        with TickerProviderStateMixin {
   QrReaderViewController _controller;
   AnimationController _animationController;
   bool openFlashlight;
@@ -39,17 +45,18 @@ class _QrcodeReaderViewState extends State<QrcodeReaderView> with TickerProvider
 
   void _initAnimation() {
     setState(() {
-      _animationController = AnimationController(vsync: this, duration: Duration(milliseconds: 1000));
+      _animationController = AnimationController(
+              vsync: this, duration: Duration(milliseconds: 1000));
     });
     _animationController
-      ..addListener(upState)
+      ..addListener(_upState)
       ..addStatusListener((state) {
         if (state == AnimationStatus.completed) {
           _timer = Timer(Duration(seconds: 1), () {
             _animationController?.reverse(from: 1.0);
           });
         } else if (state == AnimationStatus.dismissed) {
-          _timer =Timer(Duration(seconds: 1), () {
+          _timer = Timer(Duration(seconds: 1), () {
             _animationController?.forward(from: 0.0);
           });
         }
@@ -59,31 +66,32 @@ class _QrcodeReaderViewState extends State<QrcodeReaderView> with TickerProvider
 
   void _clearAnimation() {
     _timer?.cancel();
-    _animationController?.dispose();
-    _animationController = null;
+    if (_animationController != null) {
+      _animationController?.dispose();
+      _animationController = null;
+    }
   }
 
-  void upState() {
+  void _upState() {
     setState(() {});
   }
 
-  void onCreateController(QrReaderViewController controller) async {
+  void _onCreateController(QrReaderViewController controller) async {
     _controller = controller;
-    _controller.startCamera(onQrBack);
+    _controller.startCamera(_onQrBack);
   }
 
   bool isScan = false;
-  Future onQrBack(data, _) async {
-    if (isScan == true) return ;
+  Future _onQrBack(data, _) async {
+    if (isScan == true) return;
     isScan = true;
     stopScan();
     await widget.onScan(data);
-    startScan();
-    isScan = false;
   }
 
   void startScan() {
-    _controller.startCamera(onQrBack);
+    isScan = false;
+    _controller.startCamera(_onQrBack);
     _initAnimation();
   }
 
@@ -92,7 +100,13 @@ class _QrcodeReaderViewState extends State<QrcodeReaderView> with TickerProvider
     _controller.stopCamera();
   }
 
-  Future scanImage() async {
+  Future<bool> setFlashlight() async {
+    openFlashlight = await _controller.setFlashlight();
+    setState(() {});
+    return openFlashlight;
+  }
+
+  Future _scanImage() async {
     stopScan();
     var image = await ImagePicker.pickImage(source: ImageSource.gallery);
     if (image == null) {
@@ -136,7 +150,7 @@ class _QrcodeReaderViewState extends State<QrcodeReaderView> with TickerProvider
               child: QrReaderView(
                 width: constraints.maxWidth,
                 height: constraints.maxHeight,
-                callback: onCreateController,
+                callback: _onCreateController,
               ),
             ),
             if (widget.headerWidget != null) widget.headerWidget,
@@ -147,7 +161,8 @@ class _QrcodeReaderViewState extends State<QrcodeReaderView> with TickerProvider
                 painter: QrScanBoxPainter(
                   boxLineColor: widget.boxLineColor,
                   animationValue: _animationController?.value ?? 0,
-                  isForward: _animationController?.status == AnimationStatus.forward,
+                  isForward:
+                  _animationController?.status == AnimationStatus.forward,
                 ),
                 child: SizedBox(
                   width: qrScanSize,
@@ -156,7 +171,9 @@ class _QrcodeReaderViewState extends State<QrcodeReaderView> with TickerProvider
               ),
             ),
             Positioned(
-              top: (constraints.maxHeight - qrScanSize) * 0.333333 + qrScanSize + 24,
+              top: (constraints.maxHeight - qrScanSize) * 0.333333 +
+                      qrScanSize +
+                      24,
               width: constraints.maxWidth,
               child: Align(
                 alignment: Alignment.center,
@@ -167,30 +184,32 @@ class _QrcodeReaderViewState extends State<QrcodeReaderView> with TickerProvider
               ),
             ),
             Positioned(
-              top: (constraints.maxHeight - qrScanSize) * 0.333333 + qrScanSize - 12 - 35,
+              top: (constraints.maxHeight - qrScanSize) * 0.333333 +
+                      qrScanSize -
+                      12 -
+                      35,
               width: constraints.maxWidth,
               child: Align(
                 alignment: Alignment.center,
                 child: GestureDetector(
                   behavior: HitTestBehavior.translucent,
-                  onTap: () async {
-                    openFlashlight = await _controller.setFlashlight();
-                    setState(() {});
-                  },
+                  onTap: setFlashlight,
                   child: openFlashlight ? flashOpen : flashClose,
                 ),
               ),
             ),
             Positioned(
               width: constraints.maxWidth,
-              bottom: constraints.maxHeight == mediaQuery.size.height ? 12 + mediaQuery.padding.top : 12,
+              bottom: constraints.maxHeight == mediaQuery.size.height
+                      ? 12 + mediaQuery.padding.top
+                      : 12,
               child: Row(
                 crossAxisAlignment: CrossAxisAlignment.center,
                 mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                 children: <Widget>[
                   GestureDetector(
                     behavior: HitTestBehavior.translucent,
-                    onTap: scanImage,
+                    onTap: _scanImage,
                     child: Container(
                       width: 45,
                       height: 45,
@@ -237,15 +256,17 @@ class _QrcodeReaderViewState extends State<QrcodeReaderView> with TickerProvider
   }
 }
 
-
 class QrScanBoxPainter extends CustomPainter {
   final double animationValue;
   final bool isForward;
   final Color boxLineColor;
 
-  QrScanBoxPainter({@required this.animationValue, @required this.isForward, this.boxLineColor})
-      : assert(animationValue != null),
-        assert(isForward != null);
+  QrScanBoxPainter(
+          {@required this.animationValue,
+            @required this.isForward,
+            this.boxLineColor})
+          : assert(animationValue != null),
+            assert(isForward != null);
 
   @override
   void paint(Canvas canvas, Size size) {
@@ -277,7 +298,8 @@ class QrScanBoxPainter extends CustomPainter {
     // rightBottom
     path.moveTo(size.width, size.height - 50);
     path.lineTo(size.width, size.height - 12);
-    path.quadraticBezierTo(size.width, size.height, size.width - 12, size.height);
+    path.quadraticBezierTo(
+            size.width, size.height, size.width - 12, size.height);
     path.lineTo(size.width - 50, size.height);
     // leftBottom
     path.moveTo(50, size.height);
@@ -287,7 +309,8 @@ class QrScanBoxPainter extends CustomPainter {
 
     canvas.drawPath(path, borderPaint);
 
-    canvas.clipRRect(BorderRadius.all(Radius.circular(12)).toRRect(Offset.zero & size));
+    canvas.clipRRect(
+            BorderRadius.all(Radius.circular(12)).toRRect(Offset.zero & size));
 
     // 绘制横向网格
     final linePaint = Paint();
@@ -322,8 +345,10 @@ class QrScanBoxPainter extends CustomPainter {
   }
 
   @override
-  bool shouldRepaint(QrScanBoxPainter oldDelegate) => animationValue != oldDelegate.animationValue;
+  bool shouldRepaint(QrScanBoxPainter oldDelegate) =>
+          animationValue != oldDelegate.animationValue;
 
   @override
-  bool shouldRebuildSemantics(QrScanBoxPainter oldDelegate) => animationValue != oldDelegate.animationValue;
+  bool shouldRebuildSemantics(QrScanBoxPainter oldDelegate) =>
+          animationValue != oldDelegate.animationValue;
 }

pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_qr_reader
 description: QR code (scan QRCode and picture) recognition （AndroidView/UiKitView）
-version: 1.0.0+1
+version: 1.0.1
 author: 王贺天<[email protected]>
 homepage: https://github.com/hetian9288/flutter_qr_reader