我刚刚开始学习flutter,并决定遵循一个教程。视频说我必须在路由工厂中使用MaterialPageRoute,并为我的路由声明全局常量,但我得到了这个错误 The following assertion was thrown buildingBuilder(dirty):
The builder for route "/" returned null.以下是我的代码 import 'package:flutter/materi
当我启动我的Flutter应用时,我得到了以下错误: ══╡ EXCEPTION CAUGHT BY FLUTTER FRAMEWORK ╞══════════════════════════════/ * /animals/catsThis resulted in the following objects:
* MaterialPageRoute<dynamic&g
我有一个颤振的应用程序,我试图深入研究路由。当我在我的home小部件中使用MaterialApp属性时,它似乎非常高兴。一旦我将其更改为使用initialRoute,应用程序就会崩溃,出现一个NoSuchMethodError和一个错误,上面写着The builder for route '/' returned null--我最初的路径是'/loading'。<anonymous closure>(Instance of '