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dart - onTap : only static members can be accessed in initializers error

帮助,当我在GestureDetector小部件或InkWell小部件的onTap属性中调用myMethod时,我得到一个onlystaticmemberscanbeaccessedininitializers错误staticStringseat1Source='images/carSeatBlack.png';_stater(){setState((){if(seat1Source=='images/carSeatBlack.png'){seat1Source='images/carSeatGreen.png';}else{seat1Source='images/carSeatBla

flutter - 警告 : the 'flutter' tool you are currently running is not the one from the current directory

运行Flutterdoctor会产生警告。警告:您当前运行的“flutter”工具不是来自当前目录:运行Flutter:/home/franklin/flutter/flutter当前目录:/home/franklin/flutter当您安装了多个flutter副本时,可能会发生这种情况。请检查您的系统路径以验证您正在运行预期的版本(运行'flutter--version'以查看您的路径上有哪个flutter)。但是我没有安装多个flutter副本。还有什么原因导致此错误? 最佳答案 问题出在您的fluttersdk路径上。您需要设

flutter - 警告 : the 'flutter' tool you are currently running is not the one from the current directory

运行Flutterdoctor会产生警告。警告:您当前运行的“flutter”工具不是来自当前目录:运行Flutter:/home/franklin/flutter/flutter当前目录:/home/franklin/flutter当您安装了多个flutter副本时,可能会发生这种情况。请检查您的系统路径以验证您正在运行预期的版本(运行'flutter--version'以查看您的路径上有哪个flutter)。但是我没有安装多个flutter副本。还有什么原因导致此错误? 最佳答案 问题出在您的fluttersdk路径上。您需要设

failed with initial frozen solve. Retrying with flexible solve.

在用condainstall时会出现如下报错这是本人在用conda安装含cuda的pytorch时出现的问题pytorch官网pytorch1.问题如下failedwithinitialfrozensolve.Retryingwithflexiblesolve.Solvingenvironment:一直在旋转,不再执行2.原因通过再网上查找,大部分认为这种报错是源问题,换个合适的源可以解决。找到用户—用户名(自己起的名字)—.condarc选择合适的源,粘贴并保存。但笔者在多次换源、以及换回默认源并未解决。3.解决方式最后改用pip安装成功解决在用pip安装时,如果较慢,关闭其他使用内存的程序

android - Flutter Run 命令不起作用——如何修复以下错误?

'flutterrun'命令崩溃。突然间,它开始抛出以下错误。flutterrunUsinghardwarerenderingwithdeviceAndroidSDKbuiltforx86.Ifyougetgraphicsartifacts,considerenablingsoftwarerenderingwith"--enable-software-rendering".Launchinglib/main.dartonAndroidSDKbuiltforx86indebugmode...Initializinggradle...1.8sResolvingdependencies...

android - Flutter Run 命令不起作用——如何修复以下错误?

'flutterrun'命令崩溃。突然间,它开始抛出以下错误。flutterrunUsinghardwarerenderingwithdeviceAndroidSDKbuiltforx86.Ifyougetgraphicsartifacts,considerenablingsoftwarerenderingwith"--enable-software-rendering".Launchinglib/main.dartonAndroidSDKbuiltforx86indebugmode...Initializinggradle...1.8sResolvingdependencies...

class - 错误 "Can' t access this in a field initializer 是什么意思”?

我想在flutter中创建一个显示警告框的类,它可以将标题和内容作为输入来显示错误框。但是当我使用它来访问AlertDialog()中同一类的变量时,调试控制台说“无法在字段初始值设定项中访问它”。import'package:flutter/material.dart';voidmain()=>runApp(MaterialApp(home:Alert("SayHy","Hy"),));classAlertextendsStatelessWidget{finalStringtitlea;finalStringcontexta;Alert(this.titlea,this.contex

class - 错误 "Can' t access this in a field initializer 是什么意思”?

我想在flutter中创建一个显示警告框的类,它可以将标题和内容作为输入来显示错误框。但是当我使用它来访问AlertDialog()中同一类的变量时,调试控制台说“无法在字段初始值设定项中访问它”。import'package:flutter/material.dart';voidmain()=>runApp(MaterialApp(home:Alert("SayHy","Hy"),));classAlertextendsStatelessWidget{finalStringtitlea;finalStringcontexta;Alert(this.titlea,this.contex

Kubeadm初始化遇到的坑:[ERROR CRI]: container runtime is not running:

运行kubeadminit--configkubeadm.yaml完整报错如下:[root@m1~]#kubeadminit--configkubeadm.yaml[init]UsingKubernetesversion:v1.25.0[preflight]Runningpre-flightchecks[WARNINGHostname]:hostname"node"couldnotbereached[WARNINGHostname]:hostname"node":lookupnodeon114.114.114.114:53:nosuchhosterrorexecutionphaseprefli

JAVA-IDEA报错Error:Cannot run program “C:\Program Files\Java\jdk1.8.0_20\bin\java.exe“

一般发生在更新jdk版本之后,执行java程序报错:Error:Cannotrunprogram“C:\ProgramFiles\Java\jdk1.8.0_20\bin\java.exe”(indirectory“C:\Users\xxx\AppData\Local\JetBrains\IntelliJIdea2020.1\compile-server”):CreateProcesserror=2,系统找不到指定的文件。解决:第一步1)查看“C:\ProgramFiles\Java\jdk1.8.0_20\bin”目录下,没有java.exe文件。第二部,重装jdk2)去jdk官网下载刚刚更