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firebase - flutter + 火力地堡 | java.lang.IllegalStateException : FirebaseApp with name [DEFAULT] doesn't exist 错误

我正在尝试通过连接我的基本Flutter应用到CloudFirestore(在Firebase中)来完成一个非常简单的练习。我已按照有关设置的说明进行操作。但是,我收到以下错误。E/MethodChannel#plugins.flutter.io/cloud_firestore(13217):FailedtohandlemethodcallE/MethodChannel#plugins.flutter.io/cloud_firestore(13217):java.lang.IllegalStateException:FirebaseAppwithname[DEFAULT]doesn't

yolov8 ModuleNotFoundError: No module named ‘ultralytics.nn‘

 在配置yolov8环境时,遇见了这么个报错,心堵一天,最后也解决了。。首先创建了个环境。condacreate-nyolov8python==3.8报错的起源也就是从这里开始的,坑。我这里选择的是python==3.8,这个本本有bug,建议3.7或3.9,反正我是换了3.7,就顺了环境配置如下:condacreate-nyolov8python==3.7pipinstallultralytics  

ios - 拒绝问题 : "We are not able to continue because we need a demo QR code or AR marker (image) to fully assess your app features."

我有一个flutter项目。它有QR码扫描仪,QR码是从网络生成的,并使用API调用。QR码扫描仪扫描QR码以获取用户信息。我提交了我的应用程序并被拒绝说:Wehavestartedthereviewofyourapp,butwearenotabletocontinuebecauseweneedademoQRcodeorARmarker(image)tofullyassessyourappfeatures.后续步骤Tohelpusproceedwiththereviewofyourapp,pleaseprovidethedemodetailsintheAppReviewInformat

ios - 拒绝问题 : "We are not able to continue because we need a demo QR code or AR marker (image) to fully assess your app features."

我有一个flutter项目。它有QR码扫描仪,QR码是从网络生成的,并使用API调用。QR码扫描仪扫描QR码以获取用户信息。我提交了我的应用程序并被拒绝说:Wehavestartedthereviewofyourapp,butwearenotabletocontinuebecauseweneedademoQRcodeorARmarker(image)tofullyassessyourappfeatures.后续步骤Tohelpusproceedwiththereviewofyourapp,pleaseprovidethedemodetailsintheAppReviewInformat

解决cURL error 60: SSL: no alternative certificate subject name matches target host name ‘test.com‘

 按照提示前往libcurl-ErrorCodes说是SSL证书问题 解决方法:1.前往该路径下载https://curl.se/ca/cacert.pem 将文件里的内容全部复制下来,然后替换上图路径的/ca-bundle.crt 里面的内容保存即可若行不通可以尝试第二种方法2.在执行curl操作前在前面加上如下代码$ch=curl_init();curl_setopt($ch,CURLOPT_URL,"https://test.com/");curl_setopt($ch,CURLOPT_HEADER,false);//原本的代码段//...//...//...curl_close($ch

dart - 我无法添加 Text(installedApps[index] ["app_name"]) 因为 'index' 未定义。我怎样才能添加这个文本?

我正在构建一个flutter应用程序。我已经构建了一个带有构造函数的类。我制作了构造函数,因此我可以自定义我的ListTile像这样:classAppListextendsStatefulWidget{@overrideAppListStatecreateState()=>AppListState();AppList({Keykey,this.child}):super(key:key);finalWidgetchild;}classAppListStateextendsState{Widgetchild;List>_installedApps;@overridevoidinitSta

dart - 我无法添加 Text(installedApps[index] ["app_name"]) 因为 'index' 未定义。我怎样才能添加这个文本?

我正在构建一个flutter应用程序。我已经构建了一个带有构造函数的类。我制作了构造函数,因此我可以自定义我的ListTile像这样:classAppListextendsStatefulWidget{@overrideAppListStatecreateState()=>AppListState();AppList({Keykey,this.child}):super(key:key);finalWidgetchild;}classAppListStateextendsState{Widgetchild;List>_installedApps;@overridevoidinitSta

mobile - Flutter 无法更改路由,因为 undefined name context with PopupMenuButton 如何解决?

我想单击一个项目菜单(PopupMenuItem)并使用Navigator.push转到另一条路线,但方法内未定义上下文。import'package:flutter/material.dart';voidmain()=>runApp(newMyApp());classMyAppextendsStatelessWidget{finalListchoices=const[constChoice(title:'Settings',icon:Icons.settings),constChoice(title:'Logout',icon:Icons.exit_to_app),];@overri

mobile - Flutter 无法更改路由,因为 undefined name context with PopupMenuButton 如何解决?

我想单击一个项目菜单(PopupMenuItem)并使用Navigator.push转到另一条路线,但方法内未定义上下文。import'package:flutter/material.dart';voidmain()=>runApp(newMyApp());classMyAppextendsStatelessWidget{finalListchoices=const[constChoice(title:'Settings',icon:Icons.settings),constChoice(title:'Logout',icon:Icons.exit_to_app),];@overri

sql Server 无法连接的问题[08001] [Microsoft][SQL Server Native Client 10.0]Named Pipes Provider: Could not

问题描述[08001][Microsoft][SQLServerNativeClient10.0]NamedPipesProvider:CouldnotopenaconnectiontoSQLServer[2].(2)[HYTO0][Microsoft][SQLServerNativeClient10.0]Logintimeoutexpired(0)[01S00][Microsoft][SQLServerNativeClient10.0]Invalidconnectionstringattribute(0)[08001][Microsoft][SQLServerNativeClient10.0