我想将用相机拍摄的照片插入到pdf表格的单元格中。但我收到以下错误代码

Question

// 我想将相机拍摄的照片插入到pdf表格的单元格中。但我收到以下错误代码。

Reloaded 1 of 1223 libraries in 6.711ms.
E/flutter (21256): [ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: Unable to load asset: File: '/data/user/0/com.example.syncsqftomysql/cache/a7844dd4-e07d-4e16-bdb0-c6618dde63eb-972127577.jpg'
E/flutter (21256): #0      PlatformAssetBundle.load (package:flutter/src/services/asset_bundle.dart:224:7)
E/flutter (21256): <asynchronous suspension>
E/flutter (21256): #1      _QrCodeState._readImageDatatoPDF (package:upmp/bysuygformu.dart:1665:18)
E/flutter (21256): <asynchronous suspension>
E/flutter (21256): #2      _QrCodeState._createPDF (package:upmp/bysuygformu.dart:1714:15)
E/flutter (21256): <asynchronous suspension>
E/flutter (21256): 

//Some of my codes are as follows. An example application may also be useful to //me.

Future<Uint8List> _readImageDatatoPDF(String name) async {
    final data = await rootBundle.load(imageFile.toString());
    return data.buffer.asUint8List(data.offsetInBytes, data.lengthInBytes);
  }

Future<void> _createPDF() async {
     PdfDocument document = PdfDocument();
    final page = document.pages.add();
    PdfGrid grid = PdfGrid();
    grid.style = PdfGridStyle(
        font: PdfStandardFont(PdfFontFamily.helvetica, 30),
        cellPadding: PdfPaddings(left: 5, right: 2, top: 2, bottom: 2));
    grid.columns.add(count: 3);
    grid.headers.add(1);
    PdfGridRow header = grid.headers[0];
    header.cells[0].value = '0';
    header.cells[1].value = 'Firma Adresi';
    header.cells[2].value = 'aaa';

    PdfGridRow row = grid.rows.add();
    row.cells[0].value = '1';
    row.cells[1].value = 'Depolar';
    row.cells[2].value = 'K-Ortrine';

    row = grid.rows.add();
    row.cells[0].value = '2';
    row.cells[1].value = 'Merkez';
    row.cells[2].value = 'Icon';

    row = grid.rows.add();`enter code here`
    row.cells[0].value = '3';
    row.cells[1].value = 'Taha';
      PdfGridCell cell2 = row.cells[2];
     grid.rows[2].height = 200;
     cell2.imagePosition = PdfGridImagePosition.stretch;

    cell2.style.backgroundImage =
     
    PdfBitmap(await _readImageDatatoPDF(
      pic.toString()));
     Rect.fromLTWH(0, 0, 0, 0);
       grid.draw(page: page, bounds: const Rect.fromLTWH(0, 0, 0, 0));

    List<int> bytes = document.save();
       document.dispose();`enter code here`
    saveAndLaunchFile(bytes, 'cikti.pdf');
  }

我想将从相机拍摄的照片插入 pdf 表格的单元格中。 我想将从相机拍摄的照片插入 pdf 表格的单元格中。 我想将从相机拍摄的照片插入 pdf 表格的单元格中。

Answer 1

cell2.style.backgroundImage =

这就是我要开始的地方。您没有将照片用作对象。您已选择使用图像作为样式。该样式需要调用存储位置而不是将照片视为对象。

• 例子。我画了墙。错误油漆罐在哪里。
• 例子。我把油漆罐放在小房间的洞里。查看/显示油漆
  能。

Answer 2

在您提到的命令行下，我可以将图像文件夹中的图像与资源一起添加到 pdf 表中的单元格中。但我无法添加从相机拍摄的照片。

 PdfGridCell cell2 = row.cells[2];
 grid.rows[2].height = 200;
 cell2.imagePosition = PdfGridImagePosition.stretch;
 cell2.style.backgroundImage =
    PdfBitmap(await  _readImageData( 'urban-logo.jpg'),);
    Rect.fromLTWH(0, 0, 0, 0);
grid.draw(page: page, bounds: const Rect.fromLTWH(0, 0, 0, 0)) ;

您能更详细地写下您的答案吗？在此处输入代码