我正在使用适用于Web的Firebase插件并设法使用firestore和身份验证。现在，我正在尝试启用firebase存储，但是当我实例化Storage时出现此错误triedtocallanon-function,suchasnull:'dart.global.firebase.storage我使用的firestore和身份验证:import'package:firebase/firebase.dart'asfb;import'package:firebase/firestore.dart';fb.Auth_firebaseAuth=fb.auth();Firestore_fires
我正在使用适用于Web的Firebase插件并设法使用firestore和身份验证。现在，我正在尝试启用firebase存储，但是当我实例化Storage时出现此错误triedtocallanon-function,suchasnull:'dart.global.firebase.storage我使用的firestore和身份验证:import'package:firebase/firebase.dart'asfb;import'package:firebase/firestore.dart';fb.Auth_firebaseAuth=fb.auth();Firestore_fires
我试图将第一次按钮设置为禁用，当用户输入数量时它被启用，按钮禁用工作正常但是当我在TextFormField中输入数量时它给出以下错误。I/flutter(29519):══╡EXCEPTIONCAUGHTBYWIDGETSLIBRARY╞═══════════════════════════════════════════════════════════I/flutter(29519):ThefollowingassertionwasthrownbuildingTextFormField(dirty,state:_TextFormFieldState#b89da):I/flutter
我试图将第一次按钮设置为禁用，当用户输入数量时它被启用，按钮禁用工作正常但是当我在TextFormField中输入数量时它给出以下错误。I/flutter(29519):══╡EXCEPTIONCAUGHTBYWIDGETSLIBRARY╞═══════════════════════════════════════════════════════════I/flutter(29519):ThefollowingassertionwasthrownbuildingTextFormField(dirty,state:_TextFormFieldState#b89da):I/flutter
这是获取登录响应的代码。如果出现错误，我想显示一个警告对话框，说明登录期间出现错误。Futurelogin(Stringusername,Stringpassword)async{Mapparams={'username':username,'password':password,};finalresponse=awaithttp.post('apiurl',body:params);if(response.statusCode!=200)throwException(response.body);returnresponse.body;}我正在添加调用login的代码。_loginC
这是获取登录响应的代码。如果出现错误，我想显示一个警告对话框，说明登录期间出现错误。Futurelogin(Stringusername,Stringpassword)async{Mapparams={'username':username,'password':password,};finalresponse=awaithttp.post('apiurl',body:params);if(response.statusCode!=200)throwException(response.body);returnresponse.body;}我正在添加调用login的代码。_loginC
我正在尝试一个简单的flutterdart程序。我指的是this教程，我该如何解决这个问题？获取以下异常I/flutter(4785):══╡EXCEPTIONCAUGHTBYWIDGETSLIBRARY╞═══════════════════════════════════════════════════════════I/flutter(4785):ThefollowingNoSuchMethodErrorwasthrownattachingtotherendertree:I/flutter(4785):Themethod'_debugTypesAreRight'wascalled
我正在尝试一个简单的flutterdart程序。我指的是this教程，我该如何解决这个问题？获取以下异常I/flutter(4785):══╡EXCEPTIONCAUGHTBYWIDGETSLIBRARY╞═══════════════════════════════════════════════════════════I/flutter(4785):ThefollowingNoSuchMethodErrorwasthrownattachingtotherendertree:I/flutter(4785):Themethod'_debugTypesAreRight'wascalled
仅在iOS上使用SQLitePCL进行更新时应用程序崩溃。在Android上运行良好。有人有什么想法吗？我的SQLiteNuGet在App.SqliteConnection.Update(pAssetRecovery)处崩溃publicstaticasyncTaskUpdate(Models.Model_AssetRecoverypAssetRecovery){try{awaitTask.Run(()=>App.SqliteConnection.Update(pAssetRecovery));}catch(SystemExceptionex){}}正在保存的模型[Table("tblA
仅在iOS上使用SQLitePCL进行更新时应用程序崩溃。在Android上运行良好。有人有什么想法吗？我的SQLiteNuGet在App.SqliteConnection.Update(pAssetRecovery)处崩溃publicstaticasyncTaskUpdate(Models.Model_AssetRecoverypAssetRecovery){try{awaitTask.Run(()=>App.SqliteConnection.Update(pAssetRecovery));}catch(SystemExceptionex){}}正在保存的模型[Table("tblA
