Flutter screen capture example

screen_capture_example.dart

import 'dart:ui' as ui;

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:rtjf/components/home_content.dart';

class HomeScreen extends StatefulWidget {
  static const String id = '/home_screen';
  @override
  _HomeScreenState createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen>
    with SingleTickerProviderStateMixin {
  static GlobalKey screen = new GlobalKey();
  AnimationController _controller;

  @override
  void initState() {
    _controller = AnimationController(vsync: this);
    super.initState();
  }

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return SafeArea(
      child: GestureDetector(
        behavior: HitTestBehavior.translucent,
        onTap: () async {
          print('touched');
        },
        child: RepaintBoundary(
          key: screen,
          child: Container(
            color: Colors.white,
            child: HomeContent(),
          ),
        ),
      ),
    );
  }

  Future<ui.Image> screenCapture() async {
    RenderRepaintBoundary boundary = screen.currentContext.findRenderObject();
    return await boundary.toImage();
  }
}