widget2image 1.0.1

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  • Changelog
  • Example
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  • new50

widget2image #

A helpful widget which can change any widget to image byte data easily.

Getting Started #

This project is a starting point for a Dart package, a library module containing code that can be shared easily across multiple Flutter or Dart projects.

For help getting started with Flutter, view our online documentation, which offers tutorials, samples, guidance on mobile development, and a full API reference.

[0.0.1] - TODO: Add release date. #

  • TODO: Describe initial release.


import 'dart:ui';

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:widget2image/widget2image.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  Widget build(BuildContext context) {
    return MaterialApp(
        title: 'Flutter Demo',
        theme: ThemeData(
          primarySwatch: Colors.blue,
        home: Scaffold(
          appBar: AppBar(),
          body: HomePage(),

class HomePage extends StatefulWidget {
  _HomePageState createState() => _HomePageState();

class _HomePageState extends State<HomePage> {
  Widget build(BuildContext context) {
    return Widget2Image(
      format: ImageByteFormat.png,
      child: Container(
        alignment: Alignment.center,
        height: 200,
        width: 200,
        color: Colors.red,
        child: Builder(
          builder: (ctx) => IconButton(
            icon: Icon(Icons.ac_unit),
            onPressed: () => _loadImage(ctx),

  _loadImage(BuildContext context) async {
    var bytes = await Widget2Image.of(context).loadImage();
    // 获取到图片字节数据 ---- 之后可随意操作
//    final dir = await getTemporaryDirectory();
//    final dest = path.join(dir.path, "widget.png");
//    await File(dest).writeAsBytes(bytes);
//    Scaffold.of(context).showSnackBar(SnackBar(content: Text("图片已保存到:$dest")));

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  widget2image: ^1.0.1

2. Install it

You can install packages from the command line:

with Flutter:

$ flutter pub get

Alternatively, your editor might support flutter pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:widget2image/widget2image.dart';
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Learn more about scoring.

We analyzed this package on Jul 11, 2020, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.8.4
  • pana: 0.13.15
  • Flutter: 1.17.5

Analysis suggestions

Package not compatible with SDK dart


  • widget2image that is a package requiring null.

Health suggestions

Format lib/widget2image.dart.

Run flutter format to format lib/widget2image.dart.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.7.0 <3.0.0
flutter 0.0.0
Transitive dependencies
collection 1.14.12 1.14.13
meta 1.1.8 1.2.2
sky_engine 0.0.99
typed_data 1.1.6 1.2.0
vector_math 2.0.8 2.1.0-nullsafety
Dev dependencies