尝试使用 flutter RenderRepaintBoundary 截屏时出错

Question

RenderRepaintBoundary boundary = globalKey.currentContext.findRenderObject() 
                                  as RenderRepaintBoundary;

var image = await boundary.toImage(pixelRatio: pixelRatio);

boundary.toImage(pixelRatio: pixelRatio); ## 抛出错误

[ERROR:flutter/shell/common/shell.cc(242)] Dart Unhandled Exception: NoSuchMethodError: The getter '_handles' was called on null.

Receiver: null
Tried calling: _handles, stack trace: #0      Object.noSuchMethod (dart:core-patch/object_patch.dart:54:5)
: #1      new Image._ (dart:ui/painting.dart:1601:12)
: #2      Scene.toImage.<anonymous closure>.<anonymous closure> (dart:ui/compositing.dart:35:24)

两周前它运行良好，但现在抛出此错误。我该如何解决？

Answer 1

所以基本上你遇到的问题是 boundary.toImage(pixelRatio: pixelRatio);

改为boundary.toImage();

它会很好用

尝试使用 flutter RenderRepaintBoundary 截屏时出错

Error when trying to take screenshot with flutter RenderRepaintBoundary

screenshot

flutter