flutter png and then create PDF file to printer

Question

I am working in new flutter project that capture a widget to PNG image with a barcode and a few text like this one and send the data to the printer via native code. But I had many issues. For example printing is too slow with ios devices (android print speed is ok). So I decide to print from PDF for ios and I have a few questions:

1. which package do I have to use for printing the PDF.
2. also can u provide me with the correct code for converting to PDF

thank you

Answer 1

You can check out this package:

https://pub.dev/packages/printing

examples from the package:

final doc = pw.Document();

doc.addPage(pw.Page(
  pageFormat: PdfPageFormat.a4,
  build: (pw.Context context) {
    return pw.Center(
      child: pw.Text('Hello World'),
    ); // Center
  })); 

then

await Printing.layoutPdf(
  onLayout: (PdfPageFormat format) async => doc.save());

hope it works for you.