huixiang_app/lib/qr/qr_code_scan.dart

import 'dart:ui';

import 'package:flutter/material.dart';
import 'package:huixiang/generated/l10n.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:image_pickers/image_pickers.dart';
import 'package:scan/scan.dart';

class QrCodeScanPage extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _QrCodeScanPage();
  }
}

class _QrCodeScanPage extends State<QrCodeScanPage> {

  ScanController controller = ScanController();
  final screenWidth = window.physicalSize.width;
  final screenHeight = window.physicalSize.height;

  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Container(
        child: Stack(
          children: [
            Positioned(
              child: Column(
                children: [
                  Expanded(
                    child: ScanView(
                      controller: controller,
                      scanAreaScale: 0.7,
                      scanLineColor: Colors.green.shade400,
                      onCapture: (data) {
                        if (data != "") {
                          Navigator.of(context).pop(data);
                        }
                      },
                    ),
                    flex: 1,
                  ),
                ],
              ),
              top: 0,
              bottom: 0,
              left: 0,
              right: 0,
            ),
            Positioned(
              child: Container(
                margin: EdgeInsets.only(left:12.w,right: 16.w,top: 16.h),
                child:Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  crossAxisAlignment: CrossAxisAlignment.center,
                  children: [
                    GestureDetector(
                      behavior: HitTestBehavior.opaque,
                      onTap: (){
                        Navigator.of(context).pop();
                      },
                      child: Container(
                        padding: EdgeInsets.symmetric(horizontal:10.w),
                        alignment: Alignment.centerLeft,
                        child: Image.asset(
                          "assets/image/return_left.webp",
                          fit: BoxFit.fill,
                          color: Colors.white,
                        ),
                      ),
                    ),
                    Spacer(),
                    Expanded(child:Text(
                      S.of(context).saoma,
                      style: TextStyle(
                        color: Colors.white,
                        fontSize: 18.sp,
                        fontWeight: FontWeight.bold,
                      ),
                    )),
                    GestureDetector(
                      behavior: HitTestBehavior.opaque,
                      onTap: () {
                        pickImage();
                      },
                      child:Container(
                        padding: EdgeInsets.symmetric(horizontal:10.w),
                        child:  Text(
                          S.of(context).xiangce,
                          style: TextStyle(
                            color: Colors.black,
                            fontSize: 18.sp,
                            fontWeight: FontWeight.bold,
                          ),
                        ),
                      ),
                    ),
                  ],
                ),
              ),
              // MyAppBar(
              //   title: "扫码",
              //   titleColor: Colors.white,
              //   leadingColor: Colors.white,
              //   brightness: Brightness.dark,
              //   background: Colors.transparent,
              //   action: Container(
              //     alignment: Alignment.center,
              //     margin: EdgeInsets.only(right: 16.w),
              //     child: GestureDetector(
              //       onTap: () {
              //         pickImage();
              //       },
              //       child: Text(
              //         S.of(context).xiangce,
              //         style: TextStyle(
              //           color: Colors.black,
              //           fontSize: 18.sp,
              //           fontWeight: FontWeight.bold,
              //         ),
              //       ),
              //     ),
              //   ),
              // ),
              top:MediaQuery.of(context).padding.top,
              left: 0,
              right: 0,
            ),
          ],
        ),
      ),
    );
  }

  pickImage() async {
    List<Media> medias = await ImagePickers.pickerPaths(
      galleryMode: GalleryMode.image,
      selectCount: 1,
      showGif: true,
      showCamera: false,
      compressSize: 500,
      uiConfig: UIConfig(
        uiThemeColor: Color(0xFFFFFFFF),
      ),
      cropConfig: CropConfig(
        enableCrop: false,
      ),
    );
    if (medias.length > 0) {
      String? result = await Scan.parse("${medias[0].path}");
      if (result?.isNotEmpty ?? false) {
        Navigator.of(context).pop(result);
      }
    }
  }

  @override
  void dispose() {
    this.controller.pause();
      super.dispose();
  }
}