如何解决代码的这个问题?
lib/Screens/LoginPage.dart:140:29: Error: No named parameter with the name 'autovalidate'.
autovalidate: _autoValidate,
^^^^^^^^^^^^
/C:/src/flutter/packages/flutter/lib/src/widgets/form.dart:40:9: Context: Found this cand
我在从json api获取数据时遇到问题。我有这样的结构: {
"team": {
"team_name": "Team Name",
"team_quantity": 10,
"team_victory": 2,
}
} 我正在尝试使用Flutter来获取数据: class Team{
final String name;
final int quantity;
final int victory;
Team({this.name, t
在我开始开发测试之前,我正尝试在Flutter上运行一个基线测试,但它已经失败了,请求已经包含的包:
Compiler message:
src/resources/news_api_provider_test.dart:17:5: Error: 'expect' is imported from both 'package:flutter_test/src/widget_tester.dart' and 'package:test_api/src/frontend/expect.dart'. expect(sum, 4);
^^^^^^
s
如果答案是简单的话,我将不胜感激。我是个初学者。
以下是我的完整项目代码:
我的错误是:
E/flutter (17497): [ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: type 'Null' is not a subtype of type 'String'
E/flutter (17497): #0 new Welcome.fromJson (package:getx_5_rest_api/models/product.dart:33:22)
E/flutt
我已经克隆了hackernews项目,该项目是由google devs在youtube上的flutter无聊节目系列中开发的。在运行颤动运行时,我得到了这些错误。 The current Dart SDK version is 2.9.2.
Because no versions of test match >1.13.0 <1.14.0 and test &g
我在图像选择器插件中得到一个错误。我已经尝试了堆栈溢出中的所有资源,并且在过去的两天里我真的被困住了。 当app我尝试上传任何文件时,控制台会弹出错误,并且没有发生任何事情。我尝试编辑这些gradle文件,然后尝试重新启动应用程序几次。但是什么也没发生 错误日志: [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: MissingPluginException(No implementation found for method pickImage on channel plugins.flutter.io/im
我没有错误,一切都更新了,但仍然有这个奇怪的无法解决的问题。几乎什么都试过了,还没修好。如果需要进一步的信息代码,请告诉我。
Launching lib\main.dart on AOSP on IA Emulator in debug mode...
Warning: unexpected element (uri:"", local:"base-extension"). Expected elements are <{}codename>,<{}layoutlib>,<{}api-level>
√ Built build
我的json响应是{"quoteText":"You\'re not obligated to win. You\'re obligated to keep trying to do the best you can every day.", "quoteAuthor":"Marian Edelman"},我试图用Map<String, dynamic> quoteData = jsonDecode(response.body);解码,但是得到了这个异常 [ERROR:flutter/shell/co
有人知道我是怎么做到的吗?
我的代码:
@override
void dispose() {
final FiltersBloc filtersBloc =
BlocProvider.of<FiltersBloc>(context);
super.dispose();
}
错误是:
flutter: BlocProvider.of() called with a context that does not contain a Bloc of type FiltersBloc.
flutter: No anc