Flutter upgrade 2.0 pub问题

Question

在flutter 1.22中，它工作得很好，但当我将flutter项目升级到2.0时，它给了我一些错误，而flutter运行我的依赖：

dependencies:
  flutter:
    sdk: flutter
  keyboard_avoider: #Already UP TO DATE update checked on 28/12/2020
  http: #Already UP TO DATE update checked on 28/12/2020
  connectivity: #old- 0.4.9+5 UP TO DATE update checked on 28/12/2020
  html: #already UP TO DATE update checked on 28/12/2020
  string_validator: #already UP TO DATE update checked on 28/12/2020
  shared_preferences: #old-0.5.12+2 UP TO DATE update checked on 28/12/2020
  simple_animations: #old-1.3.3 UP TO DATE update checked on 28/12/2020 for toast animation
  progress_dialog: # already UP TO DATE update checked on 28/12/2020 for progress dialog can also use for show download contain percentage,update
  device_info: #old-0.4.2+9 UP TO DATE update checked on 28/12/2020
  package_info: #old-0.4.3 UP TO DATE update checked on 28/12/2020
  timeago: #old-2.0.29 UP TO DATE update checked on 28/12/2020
  date_format: #already UP TO DATE update checked on 28/12/2020
  datetime_picker_formfield: #already UP TO DATE update checked on 28/12/2020
  intl: #already UP TO DATE update checked on 28/12/2020
  flutter_multiselect: #already UP TO DATE update checked on 28/12/2020
  flutter_local_notifications: #already UP TO DATE update checked on 28/12/2020
  flutter_picker: #already UP TO DATE update checked on 28/12/2020
  f_logs: #old-1.3.0-alpha-01 UP TO DATE update checked on 28/12/2020
  image_picker: #old-^0.6.5-alpha-01 UP TO DATE update checked on 28/12/2020
  image_cropper: #already UP TO DATE update checked on 28/12/2020
  flutter_uploader: #old-^1.2.0 UP TO DATE update checked on 28/12/2020
  flutter_downloader: #old-^1.4.1 UP TO DATE update checked on 28/12/2020
  provider: #old-^3.1.0+1 UP TO DATE update checked on 28/12/2020
  flutter_email_sender: #old-^3.0.1 UP TO DATE update checked on 28/12/2020
  path_provider: #^2.0.1 #^1.6.24 #old-^1.6.7 UP TO DATE update checked on 28/12/2020
  flutter_full_pdf_viewer: #already UP TO DATE update checked on 28/12/2020
  flutter_archive: #old-1.0.2 UP TO DATE update checked on 28/12/2020
  webview_flutter: #old-0.3.14 UP TO DATE update checked on 28/12/2020
  platform_action_sheet: #already UP TO DATE update checked on 28/12/2020
  get_it: #old- UP TO DATE update checked on 28/12/2020
  url_launcher: #6.0.2 #old- 5.0.3 UP TO DATE update checked on 28/12/2020
  filesize: #already UP TO DATE update checked on 28/12/2020
  contacts_service: #old- 0.3.10 UP TO DATE update checked on 28/12/2020
  permission_handler: #old-4.0.0 UP TO DATE update checked on 28/12/2020
  photo_view: #old-0.9.2 UP TO DATE update checked on 28/12/2020
  flutter_share: #old- 1.0.2+1 UP TO DATE update checked on 28/12/2020
  cached_network_image: #old- 2.3.3 UP TO DATE update checked on 28/12/2020
  flutter_cache_manager: #old-2.0.0 UP TO DATE update checked on 28/12/2020
  flushbar: #old- 1.10.4 UP TO DATE update checked on 28/12/2020
  get: #old- 2.13.0 UP TO DATE update checked on 28/12/2020
  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: #old-0.1.2 UP TO DATE update checked on 28/12/2020
  material_design_icons_flutter: #old-3.4.5045 UP TO DATE update checked on 29/12/2020
  firebase_messaging: #^6.0.16 #6.0.16 alternate version
  firebase_analytics: #old-6.3.0 UP TO DATE update checked on 29/12/2020
  firebase_crashlytics: #^1.0.0 #old-0.1.3+3 UP TO DATE update checked on 29/12/2020
  firebase_auth: #^1.0.1 #^0.16.1 #old-0.18.4+1 UP TO DATE update checked on 29/12/2020
  firebase_core: #^1.0.1 #^0.4.4 #0.5.3
  google_sign_in: #old-4.5.1 UP TO DATE update checked on 29/12/2020
  pull_to_refresh:
  shimmer:
  archive:  #already UP TO DATE update checked on 29/12/2020
  flutter_slidable: #already UP TO DATE update checked on 29/12/2020
  flutter_launcher_icons:
  file_picker: #old-1.9.0 UP TO DATE update checked on 29/12/2020
  percent_indicator: #old-2.1.7+4 UP TO DATE update checked on 29/12/2020
  flutter_section_table_view: #already UP TO DATE update checked on 29/12/2020
  international_phone_input: #already UP TO DATE update checked on 29/12/2020for formating mobile number
  firebase_dynamic_links: #old- 0.6.3 UP TO DATE update checked on 29/12/2020 #for creating dynamic link
  intl_phone_number_input: #old-0.4.6+2 UP TO DATE update checked on 29/12/2020 #for international number input
  flutter_open_whatsapp: #already UP TO DATE update checked on 29/12/2020

错误

Running Xcode build...                                                  
Xcode build done.                                           29.3s
Failed to build iOS app
Error output from Xcode build:
↳
    ** BUILD FAILED **


Xcode's output:
↳
    /Users/siddhant/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/ios/Classes/FirebaseAuthPlugin.m:80:42: error:
    incompatible block pointer types sending 'void (^)(FIRUser *__strong, NSError *__strong)' to parameter of type 'void (^
    _Nullable)(FIRAuthDataResult * _Nullable __strong, NSError * _Nullable __strong)'
                                  completion:^(FIRUser *user, NSError *error) {
                                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    In module 'FirebaseAuth' imported from
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/Headers/Public/Firebase/Firebase.h:30:
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuth.h:573:
    75: note: passing argument to parameter 'completion' here
                                                    NSError *_Nullable error))completion;
                                                                              ^
    /Users/siddhant/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/ios/Classes/FirebaseAuthPlugin.m:87:42: error:
    incompatible block pointer types sending 'void (^)(FIRUser *__strong, NSError *__strong)' to parameter of type 'void (^
    _Nullable)(FIRAuthDataResult * _Nullable __strong, NSError * _Nullable __strong)'
                                  completion:^(FIRUser *user, NSError *error) {
                                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    In module 'FirebaseAuth' imported from
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/Headers/Public/Firebase/Firebase.h:30:
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuth.h:573:
    75: note: passing argument to parameter 'completion' here
                                                    NSError *_Nullable error))completion;
                                                                              ^
    /Users/siddhant/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/ios/Classes/FirebaseAuthPlugin.m:96:42: error:
    incompatible block pointer types sending 'void (^)(FIRUser *__strong, NSError *__strong)' to parameter of type 'void (^
    _Nullable)(FIRAuthDataResult * _Nullable __strong, NSError * _Nullable __strong)'
                                  completion:^(FIRUser *user, NSError *error) {
                                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    In module 'FirebaseAuth' imported from
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/Headers/Public/Firebase/Firebase.h:30:
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuth.h:573:
    75: note: passing argument to parameter 'completion' here
                                                    NSError *_Nullable error))completion;
                                                                              ^
    /Users/siddhant/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/ios/Classes/FirebaseAuthPlugin.m:109:21:
    warning: 'fetchProvidersForEmail:completion:' is deprecated: Please use fetchSignInMethodsForEmail:completion: for Objective-C or
    fetchSignInMethods(forEmail:completion:) for Swift instead. [-Wdeprecated-declarations]
        [[FIRAuth auth] fetchProvidersForEmail:email
                        ^
    In module 'FirebaseAuth' imported from
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/Headers/Public/Firebase/Firebase.h:30:
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuth.h:398:
    5: note: 'fetchProvidersForEmail:completion:' has been explicitly marked deprecated here
        DEPRECATED_MSG_ATTRIBUTE("Please use fetchSignInMethodsForEmail:completion: for Objective-C or "
        ^
    In module 'UIKit' imported from /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/Target Support
    Files/firebase_auth/firebase_auth-prefix.pch:2:
    In module 'Foundation' imported from
    /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.1.sdk/System/Library/Frame
    works/UIKit.framework/Headers/UIKit.h:8:
    In module 'CoreFoundation' imported from
    /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.1.sdk/System/Library/Frame
    works/Foundation.framework/Headers/Foundation.h:6:
    In module 'Darwin' imported from
    /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.1.sdk/System/Library/Frame
    works/CoreFoundation.framework/Headers/CoreFoundation.h:16:
    /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.1.sdk/usr/include/Availabi
    lityMacros.h:181:64: note: expanded from macro 'DEPRECATED_MSG_ATTRIBUTE'
                #define DEPRECATED_MSG_ATTRIBUTE(s) __attribute__((deprecated(s)))
                                                                   ^
    /Users/siddhant/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/ios/Classes/FirebaseAuthPlugin.m:160:52:
    error: incompatible block pointer types sending 'void (^)(FIRUser *__strong, NSError *__strong)' to parameter of type 'void (^
    _Nullable)(FIRAuthDataResult * _Nullable __strong, NSError * _Nullable __strong)'
                                            completion:^(FIRUser *user, NSError *error) {
                                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    In module 'FirebaseAuth' imported from
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/Headers/Public/Firebase/Firebase.h:30:
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRUser.h:401:
    73: note: passing argument to parameter 'completion' here
                                                  NSError *_Nullable error))completion;
                                                                            ^
    /Users/siddhant/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/ios/Classes/FirebaseAuthPlugin.m:169:52:
    error: incompatible block pointer types sending 'void (^)(FIRUser *__strong, NSError *__strong)' to parameter of type 'void (^
    _Nullable)(FIRAuthDataResult * _Nullable __strong, NSError * _Nullable __strong)'
                                            completion:^(FIRUser *user, NSError *error) {
                                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    In module 'FirebaseAuth' imported from
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/Headers/Public/Firebase/Firebase.h:30:
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRUser.h:401:
    73: note: passing argument to parameter 'completion' here
                                                  NSError *_Nullable error))completion;
                                                                            ^
    /Users/siddhant/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/ios/Classes/FirebaseAuthPlugin.m:176:52:
    error: incompatible block pointer types sending 'void (^)(FIRUser *__strong, NSError *__strong)' to parameter of type 'void (^
    _Nullable)(FIRAuthDataResult * _Nullable __strong, NSError * _Nullable __strong)'
                                            completion:^(FIRUser *user, NSError *error) {
                                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    In module 'FirebaseAuth' imported from
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/Headers/Public/Firebase/Firebase.h:30:
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRUser.h:401:
    73: note: passing argument to parameter 'completion' here
                                                  NSError *_Nullable error))completion;
                                                                            ^
    /Users/siddhant/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/ios/Classes/FirebaseAuthPlugin.m:185:52:
    error: incompatible block pointer types sending 'void (^)(FIRUser *__strong, NSError *__strong)' to parameter of type 'void (^
    _Nullable)(FIRAuthDataResult * _Nullable __strong, NSError * _Nullable __strong)'
                                            completion:^(FIRUser *user, NSError *error) {
                                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    In module 'FirebaseAuth' imported from
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/Headers/Public/Firebase/Firebase.h:30:
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRUser.h:401:
    73: note: passing argument to parameter 'completion' here
                                                  NSError *_Nullable error))completion;
                                                                            ^
    /Users/siddhant/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/ios/Classes/FirebaseAuthPlugin.m:276:42:
    error: incompatible block pointer types sending 'void (^)(FIRUser *__strong, NSError *__strong)' to parameter of type 'void (^
    _Nullable)(FIRAuthDataResult * _Nullable __strong, NSError * _Nullable __strong)'
                                  completion:^(FIRUser *user, NSError *error) {
                                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    In module 'FirebaseAuth' imported from
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/Headers/Public/Firebase/Firebase.h:30:
    /Users/siddhant/Siddhant_WorkSpace/Speridian_Work/TC_Latest/ios/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuth.h:573:
    75: note: passing argument to parameter 'completion' here
                                                    NSError *_Nullable error))completion;
                                                                              ^
    /Users/siddhant/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/ios/Classes/FirebaseAuthPlugin.m:300:62:
    warning: implicit conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32]
      userData[@"lastSignInTimestamp"] = [NSNumber numberWithInt:lastSignInDate];
                                         ~                       ^~~~~~~~~~~~~~
    2 warnings and 8 errors generated.
    note: Using new build system
    note: Building targets in parallel
    note: Planning build
    note: Constructing build description

Could not build the application for the simulator.
Error launching application on iPhone 12 Pro Max.

我已经尝试删除podFile、Podlock、Pod和.symlinks。甚至升级了cocapods。跑得扑腾的医生也给了我所有的扁虫。如有任何建议，请提前告诉我，谢谢你的帮助。

Answer 1

回滚到1.22并等待Flutter 2上的稳定版本。Flutter 2引入了Null Safety，这可能会导致基于Flutter 1.22的项目出现问题。

Answer 2

请使用firebase相关的所有版本兼容。如果使用firebase_auth: ^0.20.0+1，则使用firebase_dynamic_links: ^0.7.0+1 firebase_messaging: ^8.0.0-dev.12 firebase_storage: ^7.0.0 firebase_core : ^0.7.0