fl_mlkit_scanning

基于Google ML Kit实现快速稳定扫码功能,支持Android\IOS

Realize fast and stable code scanning function based on Google ML Kit, and support Android \ IOS

相机相关功能依赖于 fl_camera

Camera related functions depend on fl_camera

使用 use

  • ios 添加相机权限 Add camera permissions to IOS
<key>NSCameraUsageDescription</key>
<string>是否允许FlMlKitScanning使用你的相机?</string>
  • 预览 preview

Widget build(BuildContext context) {
  return FlMlKitScanning(

    /// 如果你设置为10, 2次解析数据间隔为10 毫秒,数字越小 在ios上cpu占有率越高,数字越大,识别速度会变慢,建议设置500-100
    /// If you set it to 10, The interval between data parsing is 10 milliseconds
    /// The larger the number, the slower the parsing,If the number is too small, the CPU percentage will be too high on ios
    /// Therefore, the recommended setting range is 500 to 1000
      frequency: 500,

      /// 需要预览的相机 不传值 默认为后摄像头
      /// Camera ID to preview
      camera: camera,

      /// 预览相机支持的分辨率
      /// Preview the resolution supported by the camera
      resolution: CameraResolution.high,

      /// 是否自动扫描 默认为[true]
      /// Auto scan defaults to [true]
      autoScanning: false,

      /// 显示在预览上层
      /// Display above preview box
      overlay: const ScannerLine(),

      /// 更新组件时是否重置相机
      /// Reset camera when updating components
      updateReset: false,

      /// 相机预览位置
      /// How a camera box should be inscribed into another box.
      fit: BoxFit.fitWidth,

      /// 闪光灯状态
      /// Flash status
      onFlashChanged: (FlashState state) {
        showToast('$state');
      },

      /// 缩放变化
      /// zoom ratio
      onFlashChanged: (FlashState state) {
        showToast('$state');
      },

      /// 相机在未初始化时显示的UI
      /// The UI displayed when the camera is not initialized
      uninitialized: Container(
          color: Colors.black,
          alignment: Alignment.center,
          child:
          const Text(
              'Camera not initialized', style: TextStyle(color: Colors.white))),

      /// 二维码识别类型  默认仅识别qr_code,需要识别几种就添加几种
      /// Identification type Only QRcode is recognized by default
      barcodeFormats: <BarcodeFormat>[BarcodeFormat.qr_code],

      /// 扫码回调
      /// Code scanning callback
      onDataChanged: (AnalysisImageModel data) {
        final List<Barcode>? barcodes = data.barcodes;
        if (barcodes != null && barcodes.isNotEmpty) {
          /// 返回数组 可识别多个码
          /// Return array
        }
      });
}

  • 方法 method
void func() {

  /// 设置设别码类型
  /// Set type
  controller.setBarcodeFormat();

  /// 识别图片字节
  /// Identify picture bytes
  controller.scanImageByte();

  /// 打开\关闭 闪光灯 
  /// Turn flash on / off
  controller.setFlashMode();

  /// 相机缩放
  /// Camera zoom
  controller.setZoomRatio();

  /// 暂停扫描
  /// Pause scanning
  controller.pause();

  /// 开始扫描
  /// Start scanncing
  controller.start();
}

androidios

Libraries

fl_mlkit_scanning