dart - 导航到其他页面

Question

我在flutter应用程序中使用了一个日期选择器cupertino：

https://github.com/wuzhendev/flutter-cupertino-date-picker

有一个名为“onconfirm（）”的方法，我试图将用户重定向到其他页面，但没有运气。
我试过了

return        Navigator.pushReplacementNamed(ctx, '/otherPage');

但当这个返回站被点击时，实际发生的是Cupertino小部件关闭，什么都没有发生。没有错误
当我尝试使用时：

return Navigator.pushNamed<bool>(
                          ctx,
                          '/route/' + object.id.toString());

一些错误：

Performing hot restart...
Restarted application in 1 685ms.
I/flutter (20542): 112
E/flutter (20542): [ERROR:flutter/shell/common/shell.cc(188)] Dart Error: Unhandled exception:
E/flutter (20542): Looking up a deactivated widget's ancestor is unsafe.
E/flutter (20542): At this point the state of the widget's element tree is no longer stable. To safely refer to a widget's ancestor in its dispose() method, save a reference to the ancestor by calling
inheritFromWidgetOfExactType() in the widget's didChangeDependencies() method.
E/flutter (20542):
E/flutter (20542): #0      Element._debugCheckStateIsActiveForAncestorLookup.<anonymous closure> (package:flutter/src/widgets/framework.dart:3232:9)
E/flutter (20542): #1      Element._debugCheckStateIsActiveForAncestorLookup (package:flutter/src/widgets/framework.dart:3241:6)
E/flutter (20542): #2      Element.ancestorStateOfType (package:flutter/src/widgets/framework.dart:3289:12)
E/flutter (20542): #3      Scaffold.of (package:flutter/src/material/scaffold.dart:935:42)

Answer 1

您应该使用Navigator.push。
导入页面，例如：import './otherPage.dart';
改变你的路线
return Navigator.pushReplacementNamed(ctx, '/otherPage');
到

return Navigator.push(context, 'otherClassName');