由于云firestore和firebase验证错误，我的Flatter应用程序不再编译

我花了好几天时间试图用Firebase调试我的应用程序。 以前它工作的很好，直到上周我更新了很多东西；android studio、Flatter、插件等。 编译后，这始终是我的结果

import android.support.annotation.NonNull;
                                 ^
/home/baw/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java:538: error: cannot find symbol
    public void onComplete(@NonNull Task<AuthResult> task) {
                            ^
  symbol:   class NonNull
  location: class FirebaseAuthPlugin.SignInCompleteListener
/home/baw/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java:558: error: cannot find symbol
    public void onComplete(@NonNull Task<Void> task) {
                            ^
  symbol:   class NonNull
  location: class FirebaseAuthPlugin.TaskVoidCompleteListener
/home/baw/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java:576: error: cannot find symbol
    public void onComplete(@NonNull Task<ProviderQueryResult> task) {
                            ^
  symbol:   class NonNull
  location: class FirebaseAuthPlugin.ProvidersCompleteListener
/home/baw/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java:175: error: cannot find symbol
                      public void onComplete(@NonNull Task<AuthResult> task) {
                                              ^
  symbol: class NonNull
/home/baw/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java:270: error: cannot find symbol
          public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
                                          ^
  symbol: class NonNull
/home/baw/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java:435: error: cannot find symbol
              public void onComplete(@NonNull Task<GetTokenResult> task) {
                                      ^
  symbol: class NonNull
/home/baw/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java:487: error: cannot find symbol
          public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
                                          ^
  symbol: class NonNull
Note: /home/baw/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.6.2+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
8 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':firebase_auth:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 2m 48s
The built failed likely due to AndroidX incompatibilities in a plugin. The tool is about to try using Jetfier to solve the incompatibility.
Building plugin cloud_firestore...
Running Gradle task 'assembleAarRelease'...
Exception: The plugin cloud_firestore could not be built due to the issue above.

找到解决方案

这确实是由AndroidX问题引起的，但迁移毫无帮助。 所以我用来解决这个问题的步骤是

打开android文件夹，使用android Studio进行编辑。 2.运行梯度同步。 3.运行应用程序。 （这显然会失败！但请转到使用Android支持库导入的文件。）

删除android支持导入（

import android.support.annotations.NonNull

）并用AndroidX导入替换它

导入androidx.annotations.NonNull

（我想不起确切的进口声明，但你可以通过谷歌搜索得到）

就这样，祝你一切顺利

找到解决方案

这确实是由AndroidX问题引起的，但迁移毫无帮助。 所以我用来解决这个问题的步骤是

打开android文件夹，使用android Studio进行编辑。 2.运行梯度同步。 3.运行应用程序。 （这显然会失败！但请转到使用Android支持库导入的文件。）

删除android支持导入（

import android.support.annotations.NonNull

）并用AndroidX导入替换它

导入androidx.annotations.NonNull

（我想不起确切的进口声明，但你可以通过谷歌搜索得到）

---

就这样，祝你一切顺利

这回答了你的问题吗？不，那还不行。同样的错误这能回答你的问题吗？不，那还不行。同样的错误

[✓] Flutter (Channel beta, 1.24.0-10.2.pre, on Linux, locale en_US.UTF-8)
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
[✓] Android Studio
[✓] Connected device (1 available)

• No issues found!```