最近在学习开发Flutter应用项目,在创建tabbar和tabview后,进行网络请求后显示顶部tab标签,设置TabController,并使class类实现SingleTickerProviderStateMixin,代码如下 class _TravelPageState extends State<TravelPage> with SingleTickerProviderStateMixin{ TabController _tabController; TravelTabModel t…
背景:最近看了很多Flutter漂亮的项目,想要尝试一下.所有环境都搭建好之后,按照文档一步一步配置(抄袭),但始终报如下图错误. PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target 找不到所请求目标的有效证书路径 起初以为只是Flutter有这个问题,一想…
在使用flutter的图片裁剪组件image_cropper,github:https://github.com/hnvn/flutter_image_cropper 根据它的要求,安卓需要在文件[AndroidManifest.xml]的 application 标签内,配置 <activity android:name="com.yalantis.ucrop.UCropActivity" android:screenOrientation="portrait&quo…
在Android studio中新建了flutter项目.运行报错licence not accepted. Warning: License for package Android SDK Build-Tools 28.0.3 not accepted. 在控制台运行 flutter doctor 会诊断出: 此时运行: flutter doctor --android-licenses.然后一路yes,就可以了.…
1.Could not find an option named "androidx". Run 'flutter -h' (or 'flutter   -h') for available flutter commands and options. 现象:Android studio工程新建Flutter module报错 原因:Flutter SDK版本过低导致 解决:下载最新版本Flutter SDK即可…
写了个list,发现出不来,报错 flutter: Another exception was thrown: RenderBox was not laid out: _RenderScrollSemantics#81b3a relayoutBoundary=up3 NEEDS-PAINTflutter: Another exception was thrown: 'package:flutter/src/rendering/shifted_box.dart': Failed assertion…
今天接手了一个客户传过来的Flutter项目,估计是客户直接拷贝过来的,无法直接运行,由于刚接手Flutter, 很多东西还不懂,折腾了一会给弄好了. 1. 提示Dart SDK is not configured. 点击右上角的“Open Dart settings” 提示,或者点击菜单栏上的“File”-“Settings”-"Languages&Frameworks"-"Flutter"栏目,设置Flutter SDK 所在的位置. 设置好Flutte…
首先,环境如下: 1.系统:windows10 64位   Android SDK version: 28.0.3   Flutter SDK: v1.5.4-hotfix.2   模拟器: 网易MuMu(android-x86) 2.问题复现步骤: VS Code打开已经新建好的flutter项目,Git bash到当前项目根目录下 输入 flutter doctor 如图,一切正常. 然后输入, flutter run 可以看到这里有一个报错,[ERROR:flutter/shell/gpu…
Flutter运行报错 `flutter kernel_snapshot for errors`解决方案 当你Flutter项目删除了dart文件如果遇到 target:kernel_snapshot for errors 错误可以通过清理Flutter缓存和构建解决问题 解决方案 因为Android Studio没有提供Flutter清除缓存重新构建的选项我们需要手动输入命令flutter clean 然后重新运行,完美解决.…
flutter 编译的时候报错 Compiler message:../../../.pub-cache/hosted/pub.dartlang.org/extended_image_library-0.1.9/lib/src/extended_network_image_provider.dart:63:41: Error: Type 'DecoderCallback' not found.      ExtendedNetworkImageProvider key, DecoderCallb…