小编xip*_*xip的帖子

如何在Widget上禁用默认的splash/ripple/ink效果？有时效果是不需要的,例如在以下TextField案例中:

升级到 Flutter 1.20.1 后尝试构建我的应用程序时出现以下错误。

Unhandled exception:
Crash when compiling null,
at character offset null:
InterfaceType(PagingResponse<Assignment*>*) is not a subtype of Class(Response) in VariableGet(response{PagingResponse<Assignment*>*})
#0      TypeEnvironment.typeError  (package:kernel/type_environment.dart:164:7)
#1      Expression.getStaticTypeAsInstanceOf  (package:kernel/ast.dart:3037:10)
#2      PropertyGet.getStaticType  (package:kernel/ast.dart:3200:20)
#3      transformAsExpression  (package:kernel/transformations/type_casts_optimizer.dart:22:45)
#4      _Lowering.visitAsExpression  (package:vm/transformations/lowering.dart:65:12)
#5      AsExpression.accept  (package:kernel/ast.dart:4913:44)
#6      VariableSet.transformChildren  (package:kernel/ast.dart:3154:21)
#7      Transformer.defaultTreeNode  (package:kernel/visitor.dart:653:10)
#8      TreeVisitor.defaultExpression  (package:kernel/visitor.dart:144:43)
#9      TreeVisitor.visitVariableSet  (package:kernel/visitor.dart:148:43)
#10     VariableSet.accept  (package:kernel/ast.dart:3144:44)
#11     ExpressionStatement.transformChildren  (package:kernel/ast.dart:5794:31)

// bunch of stack that doesn't look important

#133    KernelTarget.buildComponent  (package:front_end/src/fasta/kernel/kernel_target.dart:355:12)
#134    IncrementalCompiler.computeDelta.<anonymous closure>  (package:front_end/src/fasta/incremental_compiler.dart:274:28)
<asynchronous suspension>
#135    IncrementalCompiler.computeDelta.<anonymous closure> (package:front_end/src/fasta/incremental_compiler.dart) …

在 macOS 上哪里可以找到应用程序的数据，例如缓存、临时文件、首选项、数据库等？

我想清除这些数据以重置我的应用程序。

在 Android 上，可以通过单击“清除数据”按钮从应用程序的设置页面完成此操作。

我注意到切换到 beta 通道（Flutter 2.9.0-0.1.pre）后，~/.pub-cache/credentials.json不再存在。我使用这个文件来设置 CI 作业来部署我的 Flutter 包。它去哪儿了？