Flutter是一种跨平台的移动应用开发框架,它使用Dart语言进行开发。在Flutter中,使用继承的小部件是一种常见的方式来构建用户界面。导航器返回NoSuchMethodError是指在导航器(...
flutter NoSuchMethodError:在null上调用了getter 'lat‘ 未处理的异常: NoSuchMethodError:在null上调用了方法“findAncestorStateOfType” 未处理的异常: NoSuchMethodError:在null上调用了方法'add‘。? 未处理的异常: NoSuchMethodError:在null上调用了方法“setString” ...
解决方法:添加GlobalCupertinoLocalizations.delegate,如下代码所示 MaterialApp( localizationsDelegates: [ GlobalCupertinoLocalizations.delegate,//添加这行即可解决问题GlobalMaterialLocalizations.delegate, GlobalWidgetsLocalizations.delegate, ], ) 注意:需要在pubspec.yaml添加localizations依赖,如下: dependencies: flutter_loca...
flutter: Another exception was thrown: 'package:flutter/src/rendering/shifted_box.dart': Failed assertion: line 314 pos 12: 'child.hasSize': is not true. flutter: Another exception was thrown: NoSuchMethodError: The method '<=' was called on null. flutter: Another exception was thrown: NoSuch...
Flutter出现以下错误：NoSuchMethodError: The method ' / was called on null.Receiver: null Tried calling: /(1334.0)解决方案：在调用前先对ScreenUtil.instance初始化宽高，如下：
正确解决:Flutter Textfield长按报错修复:NosuchMethodError: The getter 'pasterButtonLabel' was ca ??? 为什么叫正确解决?? 关于这个问题,我在百度上看过很多人的答案,基本无一例外都是,说:“Cupertino缺少了对应的非英文版本的支持”。 大家真的看过源码吗?真的是缺少Cupertino么?我是真不相信的,flutter出了...
GlobalCupertinoLocalizations.delegate, //添加这行即可解决问题 GlobalMaterialLocalizations.delegate, GlobalWidgetsLocalizations.delegate, ], ) 注意:需要在pubspec.yaml添加localizations依赖,如下: dependencies: flutter_localizations: sdk: flutter 1. 2.
Flutter:FutureBuilderNoSuchMethodError不为空 我用FlutterBuilder和ListView.builder创建了一个flutter项目,它从JSON文件(本地)获取数据。我成功地构建了这个应用程序,但就在一秒钟内,屏幕显示如下: 之后,我的应用程序工作顺利。这是我的密码: FutureBuilder( future: _isInit ? fetchDoa(context) : Future(null),...
我一直在尝试在flutter中创建一个listview,并获取视图滚动了多少像素。不幸的是,我用了NotificationListener Like this: NotificationListener<ScrollUpdateNotification>( child: ListView( children: [ //content here ], ), onNotification: (notification) { ...
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