你好，我创建了一个 Flutter 应用程序，我正在使用这个包创建一个 pdf https://pub.dev/packages/syncfusion_flutter_pdf
我不知道要在此处添加 pdf，因此我附上了用于下载或查看 pdf 的驱动器链接
pdf 或我想要的 pdf 格式在下面你可以从下面的链接下载
https://drive.google.com/file/d/1WR1U7fYmBn9Pm1FyXdXfFxEvVhKTU3mw/view?usp=sharing
到目前为止，我已经创建了以下 pdf，您可以从以下链接下载
https://drive.google.com/file/d/1WyyEANBgmDy6RGR82ZgznW4IWhp41th2/view?usp=sharing
我只是想从这个 pdf https://drive.google.com/file/d/1WR1U7fYmBn9Pm1FyXdXfFxEvVhKTU3mw/view?usp=sharing
创建或附加格式这是我尝试创建 pdf 的代码
Future<void> generateInvoice() async {
//Create a PDF document.
final PdfDocument document = PdfDocument();
//Add page to the PDF
final PdfPage page = document.pages.add();
//Get page client size
final Size pageSize = page.getClientSize();
//Generate PDF grid.
final PdfGrid grid = PdfGrid();
// //Add invoice footer
drawFooter(page, pageSize);
//Secify the columns count to the grid.
grid.columns.add(count: 6);
//Create the header row of the grid.
final PdfGridRow headerRow = grid.headers.add(1)[0];
//Set style
headerRow.style.backgroundBrush = PdfSolidBrush(PdfColor(68, 114, 196));
headerRow.style.textBrush = PdfBrushes.white;
headerRow.cells[0].value = 'Product Image';
headerRow.cells[1].value = 'Product Id';
headerRow.cells[1].stringFormat.alignment = PdfTextAlignment.center;
headerRow.cells[2].value = 'Product Name';
headerRow.cells[3].value = 'Metal';
headerRow.cells[4].value = 'Stone';
headerRow.cells[5].value = 'Quantity';
//Add rows
for(int i = 0; i < _totalItems; i++){
final PdfGridRow row = grid.rows.add();
var imageResponse1 = await get(Uri.parse(photoArray[i]));
row.cells[0].value = PdfBitmap(imageResponse1.bodyBytes.toList());
row.cells[1].value = array[i];
row.cells[2].value = nameArray[i];
row.cells[3].value = metalArray[i];
row.cells[4].value = stoneArray[i];
row.cells[5].value = '1';
grid.rows[i].height = 100;
}
grid.columns[2].width = 200;
for (int i = 0; i < headerRow.cells.count; i++) {
headerRow.cells[i].style.cellPadding =
PdfPaddings(bottom: 5, left: 5, right: 5, top: 5);
}
//Apply the table built-in style
grid.applyBuiltInStyle(PdfGridBuiltInStyle.listTable4Accent5);
grid.draw(
page: page,
bounds: Rect.fromLTWH(0, 0, page.getClientSize().width,
page.getClientSize().height));
//Save the PDF document
final List<int> bytes = document.save();
//Dispose the document.
document.dispose();
//Get external storage directory
Directory directory = (await getExternalStorageDirectory());
//Get directory path
String path = directory.path;
print(path);
//Create an empty file to write PDF data
File file = File('$path/Output.pdf');
//Write PDF data
await file.writeAsBytes(bytes, flush: true);
setState(() {
isApiCallProcess = false;
});
//Open the PDF document in mobile
OpenFile.open('$path/Output.pdf');
}
//Draw the invoice footer data.
void drawFooter(PdfPage page, Size pageSize) {
final PdfPen linePen =
PdfPen(PdfColor(142, 170, 219, 255), dashStyle: PdfDashStyle.custom);
linePen.dashPattern = <double>[3, 3];
//Draw line
page.graphics.drawLine(linePen, Offset(0, pageSize.height - 100),
Offset(pageSize.width, pageSize.height - 100));
const String footerContent =
// ignore: leading_newlines_in_multiline_strings
'''\r\n\r\nAny Questions? shreennansharda@gmail.com Or 971529893336''';
//Added 30 as a margin for the layout
page.graphics.drawString(
footerContent, PdfStandardFont(PdfFontFamily.helvetica, 9),
format: PdfStringFormat(alignment: PdfTextAlignment.right),
bounds: Rect.fromLTWH(pageSize.width - 30, pageSize.height - 70, 0, 0));
}
基本上在我的应用中，当用户点击下载按钮时，数据应该以第一个链接中给出的格式下载。
我尝试创建格式，但有点困难，请帮我解决这个问题！
请帮忙！！
提前致谢！！！
更新问题
我尝试了一些东西，但我无法将网格添加到第 3 列，并且页脚中的数量仅出现在第一页上
这里是我试过的pdf
https://drive.google.com/file/d/1sw4cAu3D58ggUZTkI8GIJza06gUMs86E/view?usp=sharing
请帮忙！！！
答案 0 :(得分：0)
感谢您联系 Syncfusion 支持。
目前我们正致力于创建示例以根据要求创建 PDF。我们将在 2021 年 6 月 17 日更新更多详细信息。
此致， 阿南德·潘查穆尔提
答案 1 :(得分：0)
感谢您的耐心等待。
我们创建了一个简单的示例来创建您之前共享的 PDF 文档。请在下面找到代码示例，
//Create a PDF document
final PdfDocument document = PdfDocument();
//Add a new page
final PdfPage page = document.pages.add();
//Create a string format to set text alignment
final PdfStringFormat format = PdfStringFormat(
alignment: PdfTextAlignment.center,
lineAlignment: PdfVerticalAlignment.middle);
final PdfStringFormat middleFormat =
PdfStringFormat(lineAlignment: PdfVerticalAlignment.middle);
//Create padding, borders for PDF grid
final PdfPaddings padding = PdfPaddings(left: 2);
final PdfPen linePen = PdfPen(PdfColor(0, 0, 0), width: 2);
final PdfPen lastRowBorderPen = PdfPen(PdfColor(0, 0, 0), width: 1);
final PdfBorders borders = PdfBorders(
left: linePen, top: linePen, bottom: linePen, right: linePen);
final PdfBorders lastRowBorder = PdfBorders(
left: linePen,
top: linePen,
bottom: lastRowBorderPen,
right: linePen);
//Create a new font
final PdfFont font = PdfStandardFont(PdfFontFamily.helvetica, 9);
//Drawing the grid as two seperate grids
//Create a grid
final PdfGrid headerGrid = PdfGrid();
//Set font for all cells
headerGrid.style.font = font;
//Add columns
headerGrid.columns.add(count: 3);
//Set column width
headerGrid.columns[0].width = 80;
headerGrid.columns[2].width = 80;
//Add a row
final PdfGridRow headerRow1 = headerGrid.rows.add();
//Set row height
headerRow1.height = 70;
//Add cell value and style properties
headerRow1.cells[0].value = 'COMPANY LOGO (ROUND)';
headerRow1.cells[0].style.stringFormat = format;
headerRow1.cells[1].value = 'SHREE NNANSHARDA JEWELLERY (LOGO)';
headerRow1.cells[1].style.stringFormat = format;
headerRow1.cells[1].columnSpan = 2;
final PdfGridRow headerRow2 = headerGrid.rows.add();
headerRow2.cells[0].value = '';
headerRow2.cells[0].columnSpan = 3;
headerRow2.height = 15;
final PdfGridRow headerRow3 = headerGrid.rows.add();
headerRow3.cells[0].value = 'PARTY NAME:';
headerRow3.cells[0].style.stringFormat = middleFormat;
headerRow3.cells[0].style.cellPadding = padding;
headerRow3.cells[2].value = 'DATE:';
headerRow3.cells[2].style.stringFormat = middleFormat;
headerRow3.cells[2].style.cellPadding = padding;
final PdfGridRow headerRow4 = headerGrid.rows.add();
headerRow4.cells[0].value = '';
headerRow4.cells[0].columnSpan = 3;
headerRow4.height = 25;
//Set border for all rows
for (int i = 0; i < headerGrid.rows.count; i++) {
final PdfGridRow headerRow = headerGrid.rows[i];
if (i == headerGrid.rows.count - 1) {
for (int j = 0; j < headerRow.cells.count; j++) {
headerRow.cells[j].style.borders = lastRowBorder;
}
} else {
for (int j = 0; j < headerRow.cells.count; j++) {
headerRow.cells[j].style.borders = borders;
}
}
}
//Draw grid and get drawn bounds
final PdfLayoutResult result =
headerGrid.draw(page: page, bounds: const Rect.fromLTWH(1, 1, 0, 0))!;
//Create a new grid
PdfGrid contentGrid = PdfGrid();
contentGrid.style.font = font;
contentGrid.columns.add(count: 4);
//Add grid header
contentGrid.headers.add(1);
contentGrid.columns[0].width = 40;
contentGrid.columns[1].width = 140;
contentGrid.columns[3].width = 80;
//Get header and set values
final PdfGridRow contentHeader = contentGrid.headers[0];
contentHeader.cells[0].value = 'SR NO';
contentHeader.cells[0].style.stringFormat = format;
contentHeader.cells[0].style.borders = borders;
contentHeader.cells[1].value = 'PRODUCT IMAGE';
contentHeader.cells[1].style.stringFormat = format;
contentHeader.cells[1].style.borders = borders;
contentHeader.cells[2].value = 'PRODUCT DETAILS';
contentHeader.cells[2].style.stringFormat = format;
contentHeader.cells[2].style.borders = borders;
contentHeader.cells[3].value = 'QUANTITY';
contentHeader.cells[3].style.stringFormat = format;
contentHeader.cells[3].style.borders = borders;
//Add content rows
contentGrid =
_addContentRow('1', contentGrid, format, middleFormat, padding);
contentGrid =
_addContentRow('2', contentGrid, format, middleFormat, padding);
contentGrid =
_addContentRow('3', contentGrid, format, middleFormat, padding);
contentGrid =
_addContentRow('4', contentGrid, format, middleFormat, padding);
contentGrid =
_addContentRow('5', contentGrid, format, middleFormat, padding);
//Add a new row
final PdfGridRow totalRow = contentGrid.rows.add();
totalRow.cells[0].value = 'TOTAL QUANTITY';
//Set column span
totalRow.cells[0].columnSpan = 3;
totalRow.cells[0].style.stringFormat = format;
totalRow.height = 25;
//Set borders for all cells in grid
for (int i = 0; i < contentGrid.rows.count; i++) {
final PdfGridRow contentRow = contentGrid.rows[i];
for (int j = 0; j < contentRow.cells.count; j++) {
contentRow.cells[j].style.borders = borders;
}
}
//Draw content grid based on the bounds calculated in first grid
contentGrid.draw(
page: result.page,
bounds:
Rect.fromLTWH(1, result.bounds.top + result.bounds.height, 0, 0));
//Save PDF document
final List<int> bytes = document.save();
//Dispose the document
document.dispose();
//Get external storage directory
Directory directory = (await getApplicationDocumentsDirectory())!;
//Get directory path
String path = directory.path;
//Create an empty file to write PDF data
File file = File('$path/Output.pdf');
//Write PDF data
await file.writeAsBytes(bytes, flush: true);
//Open the PDF document in mobile
OpenFile.open('$path/Output.pdf');
//Custom method to create content row and set style properties
PdfGrid _addContentRow(String srNo, PdfGrid grid, PdfStringFormat format,
PdfStringFormat middleFormat, PdfPaddings padding) {
//Add a row
final PdfGridRow contentRow1 = grid.rows.add();
//Set height
contentRow1.height = 15;
//Set values and style properties
contentRow1.cells[0].value = srNo;
contentRow1.cells[0].style.stringFormat = format;
//Set row span
contentRow1.cells[0].rowSpan = 6;
contentRow1.cells[1].rowSpan = 6;
contentRow1.cells[2].value = '';
contentRow1.cells[3].rowSpan = 6;
final PdfGridRow contentRow2 = grid.rows.add();
contentRow2.cells[2].value = 'DESIGN NO-';
contentRow2.cells[2].style.cellPadding = padding;
contentRow2.cells[2].style.stringFormat = middleFormat;
final PdfGridRow contentRow3 = grid.rows.add();
contentRow3.cells[2].value = 'GROSS WEIGHT-';
contentRow3.cells[2].style.cellPadding = padding;
contentRow3.cells[2].style.stringFormat = middleFormat;
final PdfGridRow contentRow4 = grid.rows.add();
contentRow4.cells[2].value = 'DIAMOND CTS-';
contentRow4.cells[2].style.cellPadding = padding;
contentRow4.cells[2].style.stringFormat = middleFormat;
final PdfGridRow contentRow5 = grid.rows.add();
contentRow5.cells[2].value = 'GOLD COLOUR-';
contentRow5.cells[2].style.cellPadding = padding;
contentRow5.cells[2].style.stringFormat = middleFormat;
final PdfGridRow contentRow6 = grid.rows.add();
contentRow6.cells[2].value = '';
contentRow6.height = 15;
final PdfGridRow contentRow7 = grid.rows.add();
contentRow7.cells[0].value = '';
contentRow7.cells[0].columnSpan = 4;
contentRow7.height = 5;
return grid;
}
请从https://www.syncfusion.com/downloads/support/directtrac/general/ze/create_pdf_file-1346255899
中找到样本并从 https://www.syncfusion.com/downloads/support/directtrac/general/ze/samples-74335454 中找到输出 PDF 样本。
如果您在这方面需要任何进一步的帮助，请告诉我们。
此致， 阿南德·潘查穆尔提