小编Rus*_*her的帖子

需要对特定区域进行截图。尝试过RepaintBoundary并且GlobalKey。小部件可以Text正常Container工作，但Image不能。Image截图中的区域为空白（白色或黑色）。

尝试过如何截取当前小部件的屏幕截图 - Flutter但没有运气。

import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:typed_data';
import 'dart:ui' as ui;
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/services.dart';
import 'package:path_provider/path_provider.dart';
import 'dart:io';

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

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'Flutter Demo',
      theme: new ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: new MyHomePage(title: 'Flutter Demo Home …