flutter

解决Unhandled Exception: DatabaseException(error database_closed)

2022-03-11
android
flutter
IOS

问题场景描述使用Flutter的Sqlite执行多条SQL(execute multiple SQL)>10，这中间会进行原库与SQL比对，符合条件会进行关闭db.close，再new一个实例重新db初始化等，操作中报错如下： Unhandled Exception...

解决Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent

2022-03-09
android
flutter

Android 12 对Android 12的兼容适配报错： Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent. Strongly consider ...

解决each Hero must have a unique non-null tag.

2022-03-08
flutter

完整错误如： Within each subtree for which heroes are to be animated (i.e. a PageRoute subtree), each Hero must have a unique non-null tag. 或者 I/flutter (8790): Another exception was t...

解决HTTP host https://maven.google.com/ is not reachable

2022-03-08
flutter

更新flutter之后运行flutter doctor 出现错误： [!] HTTP Host Availability ✗ HTTP host https://maven.google.com/ is not reachable. Reason: An error occurred while checking the HTTP host: Opera...

Flutter 逆向工程框架

2022-03-07
flutter
安全工具

reFlutter reFlutter是一款功能强大的逆向工程分析工具，该工具主要针对的是Flutter应用程序。该框架使用了已编译且重新封装的Flutter库来帮助广大研究人员对Flutter应用程序进行逆向工程分析。除此之外...

Flutter/Dart循环 for、 while 、do..while 、break、continue

2022-03-04
flutter
前端
后端

++、-- 表示自增、自减，运算规则和java类似在赋值运算里：如果++、--写在前面，表示先运算，后赋值如果++、--写在后面，表示先赋值，后运算while 、do..while区别：do..while无论条件是否成立，首先执行一次bre...

Flutter判断区分Debug/Release/Profile模式

2022-01-03
flutter

framework层已经有判断编译模式的代码了,我们直接拿来用就行. 在packages/flutter/lib/src/foundation/constants.dart中有:复制成功dart ...

解决Could not find ‘CFPropertyList’ (>= 2.3.3, < 4.0) among 92 total gem(s) (Gem::MissingSpecError)

2021-10-30
flutter
IOS

在pod install时报错 Could not find 'CFPropertyList' (>= 2.3.3, < 4.0) among 92 total gem(s) (Gem::MissingSpe...

解决could not find included file ‘Pods/Target Support Files/Pods-Runner/Pods-Runner

2021-10-30
flutter
IOS

当运行IOS run的时候发生了编译的报错： could not find included file 'Pods/Target Support Files/Pods-Runner/Pods-Runne 解决办法如下根目录...

flutter应用程序图标制作简单方法

2021-10-23
flutter

其实之前已经有写过一篇文章《Flutter应用图标自适应方案：标准规范自动圆角不变形》，结合着看也行。让我们承认这一点ーー管理应用程序图标是一项重复的任务。他们必须生成的多分辨率和手动放置在几个文件...