MissingPluginException（在通道插件上找不到方法 Firebase#initializeCore 的實現。flutter.io/firebase_core）發布模式

Question

當我在調試模式下運行我的應用程序時，它連接到 firebase 並工作。 沒有問題。 但是當我在發布模式下運行它時，我收到以下錯誤並且應用程序根本沒有打開。

MissingPluginException（未找到方法 Firebase #initializeCore on channel plugins.flutter.io/firebase_core 的實現）

雖然我在網上嘗試了很多方法，但我無法解決問題。 如果您能幫助我，我將不勝感激...

Launching lib/main.dart on sdk gphone x86 64 in release mode...
Plugin `cloud_firestore` doesn't implement a plugin interface, nor sets a default implementation in pubspec.yaml.
                                                                        
To set a default implementation, use:                                   
flutter:                                                                
  plugin:                                                               
    platforms:                                                          
      macos:                                                            
        default_package: <plugin-implementation>                        
                                                                        
To implement an interface, use:                                         
flutter:                                                                
  plugin:                                                               
    implements: <plugin-interface>                                      
                                                                        
Plugin `firebase_auth` doesn't implement a plugin interface, nor sets a default implementation in pubspec.yaml.
                                                                        
To set a default implementation, use:                                   
flutter:                                                                
  plugin:                                                               
    platforms:                                                          
      macos:                                                            
        default_package: <plugin-implementation>                        
                                                                        
To implement an interface, use:                                         
flutter:                                                                
  plugin:                                                               
    implements: <plugin-interface>                                      
                                                                        
Plugin `firebase_core` doesn't implement a plugin interface, nor sets a default implementation in pubspec.yaml.
                                                                        
To set a default implementation, use:                                   
flutter:                                                                
  plugin:                                                               
    platforms:                                                          
      macos:                                                            
        default_package: <plugin-implementation>                        
                                                                        
To implement an interface, use:                                         
flutter:                                                                
  plugin:                                                               
    implements: <plugin-interface>                                      
                                                                        
Plugin `path_provider_linux` doesn't implement a plugin interface, nor sets a default implementation in pubspec.yaml.
                                                                        
To set a default implementation, use:                                   
flutter:                                                                
  plugin:                                                               
    platforms:                                                          
      linux:                                                            
        default_package: <plugin-implementation>                        
                                                                        
To implement an interface, use:                                         
flutter:                                                                
  plugin:                                                               
    implements: <plugin-interface>                                      
                                                                        
Plugin `path_provider_macos` doesn't implement a plugin interface, nor sets a default implementation in pubspec.yaml.
                                                                        
To set a default implementation, use:                                   
flutter:                                                                
  plugin:                                                               
    platforms:                                                          
      macos:                                                            
        default_package: <plugin-implementation>                        
                                                                        
To implement an interface, use:                                         
flutter:                                                                
  plugin:                                                               
    implements: <plugin-interface>                                      
                                                                        
Plugin `path_provider_windows` doesn't implement a plugin interface, nor sets a default implementation in pubspec.yaml.
                                                                        
To set a default implementation, use:                                   
flutter:                                                                
  plugin:                                                               
    platforms:                                                          
      windows:                                                          
        default_package: <plugin-implementation>                        
                                                                        
To implement an interface, use:                                         
flutter:                                                                
  plugin:                                                               
    implements: <plugin-interface>                                      
                                                                        
Plugin `sqflite` doesn't implement a plugin interface, nor sets a default implementation in pubspec.yaml.
                                                                        
To set a default implementation, use:                                   
flutter:                                                                
  plugin:                                                               
    platforms:                                                          
      macos:                                                            
        default_package: <plugin-implementation>                        
                                                                        
To implement an interface, use:                                         
flutter:                                                                
  plugin:                                                               
    implements: <plugin-interface>                                      
                                                                        
Note: /Users/serkankural/FlutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_core-0.5.3/android/src/main/java/io/flutter/plugins/firebase/core/FlutterFirebaseCorePlugin.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.                    
Note: /Users/serkankural/FlutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/cloud_firestore-0.14.4/android/src/main/java/io/flutter/plugins/firebase/firestore/FlutterFirebaseFirestorePlugin.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.                    
Note: Some input files use or override a deprecated API.                
Note: Recompile with -Xlint:deprecation for details.                    
Note: /Users/serkankural/FlutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.18.4+1/android/src/main/java/io/flutter/plugins/firebase/auth/FlutterFirebaseAuthPlugin.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.                    
Note: /Users/serkankural/FlutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/pdf_flutter-1.1.3/android/src/main/java/com/erluxman/pdf_flutter/PdfFlutterPlugin.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.                    
Running Gradle task 'assembleRelease'...                                
Running Gradle task 'assembleRelease'... Done                     153,7s
✓ Built build/app/outputs/flutter-apk/app-release.apk (56.3MB).
Installing build/app/outputs/flutter-apk/app.apk...                 5,7s
Flutter run key commands.
h Repeat this help message.
c Clear the screen
q Quit (terminate the application on the device).
E/flutter (11638): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: MissingPluginException(No implementation found for method Firebase#initializeCore on channel plugins.flutter.io/firebase_core)
E/flutter (11638): #0      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:156)
E/flutter (11638): <asynchronous suspension>
E/flutter (11638): #1      MethodChannel.invokeListMethod (package:flutter/src/services/platform_channel.dart:344)
E/flutter (11638): <asynchronous suspension>
E/flutter (11638): #2      MethodChannelFirebase._initializeCore (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:30)
E/flutter (11638): <asynchronous suspension>
E/flutter (11638): #3      MethodChannelFirebase.initializeApp (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:75)
E/flutter (11638): <asynchronous suspension>
E/flutter (11638): #4      Firebase.initializeApp (package:firebase_core/src/firebase.dart:43)
E/flutter (11638): <asynchronous suspension>
E/flutter (11638): #5      main (package:atasehir_app/main.dart:10)
E/flutter (11638): <asynchronous suspension>

Answer 1

讓我們這樣嘗試：

1. 通過 Android Studio 打開 Flutter 項目中的“Android”文件夾
2. 同步“Gradle”文件一次（單擊工具欄上的圖標 Elephant）
3. 運行項目
4. 打開 Flutter 項目文件夾並再次運行項目。