PDF with pictures

pictures.dart

import 'dart:typed_data';

import 'package:flutter/material.dart';
import 'package:pdf/pdf.dart';
import 'package:pdf/widgets.dart' as pw;
import 'package:printing/printing.dart';

void main() => runApp(const MyApp('Some pictures'));

class MyApp extends StatelessWidget {
  const MyApp(this.title);

  final String title;

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text(title)),
        body: PdfPreview(
          build: (format) => _generatePdf(format, title),
        ),
      ),
    );
  }

  Future<Uint8List> _generatePdf(PdfPageFormat format, String title) async {
    final pdf = pw.Document();

    final font = await PdfGoogleFonts.playRegular();

    const urls = [
      'https://i.imgur.com/9OPSnFH.jpeg',
      'https://i.imgur.com/54Njk5Y.jpeg',
      'https://i.imgur.com/YoDEqLF.jpeg',
      'https://i.imgur.com/KALDohV.jpeg',
      'https://i.imgur.com/JRAmHIq.jpeg',
      'https://i.imgur.com/bvVlG2I.jpeg',
      'https://i.imgur.com/UPAPKVX.jpeg',
      'https://i.imgur.com/O8ThKb2.jpeg',
      'https://i.imgur.com/LEbNkdn.jpeg',
    ];

    final images = <pw.ImageProvider>[];
    for (final photo in urls) {
      images.add(await networkImage(photo));
    }

    pdf.addPage(
      pw.MultiPage(
        pageFormat: format,
        build: (pw.Context context) => <pw.Widget>[
          pw.Center(
            child: pw.Text(
              title,
              style: pw.TextStyle(
                fontSize: 28,
                font: font,
              ),
            ),
          ),
          pw.SizedBox(height: 20),
          pw.Center(
            child: pw.Wrap(
              runSpacing: 10,
              spacing: 10,
              children: <pw.Widget>[
                for (final image in images)
                  pw.ClipRRect(
                    horizontalRadius: 10,
                    verticalRadius: 10,
                    child: pw.Image(
                      image,
                      height: 200,
                      width: 200,
                      fit: pw.BoxFit.cover,
                    ),
                  ),
              ],
            ),
          ),
        ],
      ),
    );

    return pdf.save();
  }
}