我正在尝试为应用程序使用自定义颜色主题。
这是main.dart文件
import 'package:flutter/material.dart';
import 'pages/HomePage.dart';
void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context)
我有一个颤动驱动集成测试,它将在各种设备上运行测试,作为CI构建的一部分。颤振驱动仅在输出中记录异常,但不会导致测试失败。当渲染引擎抛出Renderflex溢出异常时,有没有办法强制测试失败? $ flutter drive test_driver/app.dart
I/flutter (20477): ══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════
I/flutter (20477): The following assertion w
在我的颤振项目中,我使用Google mlkit: ^0.9.0扫描条形码,当我运行它时,会出现以下错误:
Note: C:\flutter\.pub-cache\hosted\pub.dartlang.org\mlkit-0.9.0\android\src\main\java\com\azihsoyn\flutter\mlkit\MlkitPlugin.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
FAILURE: Build failed with
在不包括Navigator的上下文中请求导航器操作
完整代码在这里
class _MyAppState extends State<MyApp> {
@override
Widget build(BuildContext context) {
return new MaterialApp(
home: new Scaffold(
drawer: new Drawer(child: new ListView(
children: <Widget>[
new Drawe
目前,我在运行flutter应用程序时遇到了问题。我试图寻找解决方案,但实际上都不是我的情况。问题是,当我尝试安装一个应用程序时,有时它开始运行,但立即崩溃,甚至没有构建,并抛出这个异常(即使是flutter演示项目):
Error connecting to the service protocol: HttpException: Connection closed before full header was received, uri = http://127.0.0.1:57564/ws".
到目前为止我尝试过的:清理现金,重新安装flutter/android studio
如何在initState中访问提供程序的上下文 我一直收到错误 flutter: The following assertion was thrown building Builder:
flutter: inheritFromWidgetOfExactType(_Provider<ProductProvider>) or inheritFromElement() was called before
flutter: _ProductDetailsPageState.initState() completed. 每当我运行下面的代码时 if (Provider.of<Pro
所有人。 我目前正处于时间紧张的状态,试图在Flutter中构建一个应用程序,但我遇到了一个小问题。在我实现了同事写的一些代码后,我的应用程序在我达到TeamState状态时抛出了一个需求绘制异常。 Here's a link to a Git repo that contains all our code in Main.dart. 任何和所有的帮助都非常感谢。 编辑:完全错误... I/flutter (14688): Another exception was thrown: RenderBox was not laid out: RenderPointerListener#e
我有一个swift框架,在这个框架中我使用了GoogleMLKit/SegmentationSelfie。因为MLKit只能通过可可pods使用,所以我必须将我的项目转换为pods项目,并按如下所示导入MLKit库。
# Uncomment the next line to define a global platform for your project
# platform :ios, '9.0'
target 'MyFramework' do
# Comment the next line if you don't want to use d
我正在尝试将tabBar添加到我的应用程序中,但我在构建它时遇到了一些问题。我已经按照文档添加了一个tabController,但是我收到一个错误,说我没有一个。我的代码如下。 class _MyAppState extends State<MyApp> with TickerProviderStateMixin {
TabController _controller;
final List<Tab> topTabs = <Tab>[
new Tab(text: 'Profile'),
new Tab(text: &
我创建了一个应用程序,我有几个try-catch。问题是,每当我打印出异常时,它只打印出异常的第一行。例如,当我删除所有try-catch并抛出异常时,它显示如下: E/flutter (15478): [ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: Null check operator used on a null value
E/flutter (15478): #0 MyClass._insertIntoDB (package:test/util/my_class.dart:186:25)
我最近迁移到LinuxUbuntu22.04。我成功地安装了Flutter和Android,但是当我尝试运行一个项目时,它会抛出一个异常错误。
线程“主”中的java.net.SocketExpection异常:连接重置
当我还运行flutter doctor时,会标记。下面是我的flutter doctor日志。
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel main, 3.4.0-19.0.pre.295, on Ubuntu 22.04.1 LTS 5.15.0-47-g