error in MemoryImage not defined in package pdf/widgets.dart - flutter

Question

import 'dart:io';
import 'package:flutter/material.dart' as material ;
import 'package:flutter/services.dart';
import 'package:pdf/pdf.dart';
import 'package:pdf/widgets.dart' as pw;
class PdfParagraphApi {
static Future<void> generate(key) async {
final pdf = pw.Document();
final img = pw.MemoryImage(await rootBundle.load('assets/img.png')).buffer.asUint8List();
pdf.addPage(
pw.MultiPage(
build: (context) => <pw.Widget>[
pw.Image(img),
]),
);
}
}
i'm trying to create a pdf with an image inside it and i'm using the library pdf/widgets.dart to create the image as i found in flutters documentation but i'm facing a problem.
the error message is the following :
The function 'MemoryImage' isn't defined.
Try importing the library that defines 'MemoryImage', correcting the name to the name of an existing function, or defining a function named 'MemoryImage'.dartundefined_function
insert image into pdf not working

Answer 1

Replace pw.MemoryImage with material.MemoryImage, because MemoryImage comes from the painting library, which is included inside the material library.

Answer 2

Try to replace the below import:
import 'package:flutter/material.dart' as material ;
with this import 'package:flutter/material.dart';

Answer 3

Try this below way:
Imports you need
import 'package:flutter/material.dart';
import 'dart:math';
import 'dart:typed_data';
import 'package:pdf/pdf.dart';
import 'package:pdf/widgets.dart ' as pw;
import 'dart:io';
import 'package:permission_handler/permission_handler.dart';
and in the top you need to define the image you want to print _imageFile = someImage:
Uint8List? _imageFile ;
Then this is the function to make an image to pdf and save it in the Downloads Folder
Future getPdf() async {
var random = Random();
var uniqueNum = random.nextInt(99999);
//get storage permission
Map<Permission, PermissionStatus> storagePermission = await [
Permission.storage,
].request();
pw.Document pdf = pw.Document();
pdf.addPage(
pw.Page(
pageFormat: PdfPageFormat.a4,
build: (context) {
return pw.Expanded(
child: pw.Image(pw.MemoryImage(_imageFile), fit: pw.BoxFit.contain),
);
},
),
);
String path = await ExternalPath.getExternalStoragePublicDirectory(
ExternalPath.DIRECTORY_DOWNLOADS);
String mainPath = "$path/Report$uniqueNum.pdf";
File pdfFile = File(mainPath);
pdfFile.writeAsBytesSync(await pdf.save());
}