【flultter listview异常type '(BuildContext, int) => dynamic' is not a subtype of type '(BuildContext, int) => Widget'】的更多相关文章

flultter listview异常type '(BuildContext, int) => dynamic' is not a subtype of type '(BuildContext, int) => Widget'

type '(BuildContext, int) => dynamic' is not a subtype of type '(BuildContext, int) => Widget' 源码如下: import 'package:flutter/material.dart'; import 'post.dart'; void main() { runApp(MaterialApp( title: 'Returning Data', home: HomePage(), )); } class…

error C2556: 'const char &MyString::operator [](int)' : overloaded function differs only by return type from 'char &MyString::operator [](int)'

char & operator[](int i);const char & operator[](int i);/*const char & operator(int i);*/编译出错:error C2556: 'const char &MyString::operator [](int)' : overloaded function differs only by return type from 'char &MyString::operator [](int…

CAST function should support INT synonym for SIGNED. i.e. CAST(y AS INT)

  Login / Register Developer Zone Bugs Home Report a bug Statistics Advanced search Saved searches Tags Bug #73054 CAST function should support INT synonym for SIGNED. i.e. CAST(y AS INT) Submitted: 19 Jun 2014 15:55 Modified: 30 Jun 2014 11:12 Repor…

Spring错误之org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'bookService' is expected to be of type 'pw.fengya.tx.BookService' but was actually of type 'com.sun.proxy.$Proxy1

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cashier': Unsatisfied dependency expressed through field 'bookService'; nested exception is org.springframework.beans.factory.BeanNotOfRequiredTypeExcept…

出错：Failed to convert property value of type 'org.apache.ibatis.session.defaults.DefaultSqlSessionFactory' to required type 'java.lang.String' for property 'sqlSessionFactoryBeanName';

出错的详细信息: 3 ERROR [http-nio-80-exec-3] org.springframework.web.servlet.DispatcherServlet - Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.mybatis.spring.mapper.MapperScannerCon…

Refused to execute script from '....js' because its MIME type ('text/html') is not executable, and strict MIME type checking is enabled.md

目录 问题描述 解决过程 总结 问题描述 在整合 Spring Boot.Spring Security.Thymeleaf 的练习中,对页面进行调试时,发现如下错误提示: Refused to execute script from 'http://localhost:8080/codelib-springsecurity-sample-web/js/ie10-viewport-bug-workaround.js' because its MIME type ('text/html') is…

Attaching an entity of type 'xxx' failed because another entity of the same type already has the same primary key value.

问题的详细描述: Attaching an entity of type 'xxxxx' failed because another entity of the same type already has the same primary key value. This can happen when using the 'Attach' method or setting the state of an entity to 'Unchanged' or 'Modified' if any e…

because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checkin

1 前言 浏览器报错误(chrome和firefox都会):because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checkin... 2 解决方案 <link rel="stylesheet" href="../../../Static/css/common/common.css" media="all"&g…

Validation异常：No validator could be found for constraint '.....' validating type 'java.lang.Integer'.

javax.validation.UnexpectedTypeException: HV000030: No validator could be found for constraint 'javax.validation.constraints.Pattern' validating type 'java.lang.Integer'. Check configuration for 'sortType' at org.hibernate.validator.internal.engine.c…

异常: Bean named 'org.springframework.transaction.interceptor.TransactionInterceptor#0' is expected to be of type 'org.aopalliance.aop.Advice' but was actually of type 'org.springframework.transaction.i

场景: 在使用spring整合hibernate事务时报错解决: spring-aop中已经包含aopaliance,删除多余的jar包…