Flutter web paste image from clipboard to <List>Uint8List - flutter

Question

My flutter web feature right now can be able to select files from disk to Uint8List. With Uint8List I can display selected images by widget.
Now I am adding more feature to the web. My motivation is Twitter copy/paste image and post.
The following is my attempt to read image from memory, but it return null to me.
import 'dart:convert';
import 'dart:typed_data';
import 'package:pasteboard/pasteboard.dart';
import 'package:flutter/material.dart';
class Experiment extends StatefulWidget {
static const String routeName = '/experiment';
const Experiment({Key? key}) : super(key: key);
#override
State<Experiment> createState() => _ExperimentState();
}
class _ExperimentState extends State<Experiment> {
List<Uint8List>? _pickedBytes = <Uint8List>[];
void clickPaste() async {
var bytes = await Pasteboard.image;
print("xx");
print(bytes);
}
#override
Widget build(BuildContext context) {
return Scaffold(
body: SafeArea(
child: Row(
children: [
Text("Experiment"),
ElevatedButton(
onPressed: clickPaste,
child: Text("BTN"),
)
],
),
)
);
}
}
Question:
How to let flutter web read the image from clipboard to <List>Uint8List?

Answer 1

The working example is here. But it support only Text.
/// Data stored on the system clipboard.
///
/// The system clipboard can contain data of various media types. This data
/// structure currently supports only plain text data, in the [text] property.
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
class Experiment extends StatefulWidget {
static const String routeName = '/experiment';
const Experiment({Key? key}) : super(key: key);
#override
State<Experiment> createState() => _ExperimentState();
}
class _ExperimentState extends State<Experiment> {
Future<void> _clipboardToWidget() async {
var data = await Clipboard.getData('text/plain');
print(data?.text);
}
#override
Widget build(BuildContext context) {
return Scaffold(
body: SafeArea(
child: Row(
children: [
Text("Experiment"),
ElevatedButton(
onPressed: _clipboardToWidget,
child: Text("BBTN"),
)
],
),
)
);
}
}