firebase_auth: ^0.8.0+1 crashes on Android

[BitKnitting]

firebase_auth: ^0.6.2+1 worked.

firebase_auth: ^0.8.0+1  errors during build.  Output from DEBUG CONSOLE:

Running "flutter packages get" in login_demo...                  0.7s
Launching lib/main.dart on Android SDK built for x86 in debug mode...
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
/Users/margaret 1/Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.8.0+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java:9: error: cannot find symbol
import androidx.annotation.NonNull;
                          ^
  symbol:   class NonNull
  location: package androidx.annotation
/Users/margaret 1/Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.8.0+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java:10: error: cannot find symbol
import androidx.annotation.Nullable;
                          ^
  symbol:   class Nullable
  location: package androidx.annotation
/Users/margaret 1/Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.8.0+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java:638: error: cannot find symbol
  private void reportException(Result result, @Nullable Exception exception) {
                                               ^
  symbol:   class Nullable
  location: class FirebaseAuthPlugin
/Users/margaret 1/Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.8.0+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java:550: error: cannot find symbol
    public void onComplete(@NonNull Task<AuthResult> task) {
                            ^
  symbol:   class NonNull
  location: class FirebaseAuthPlugin.SignInCompleteListener
/Users/margaret 1/Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.8.0+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java:569: error: cannot find symbol
    public void onComplete(@NonNull Task<Void> task) {
                            ^
  symbol:   class NonNull
  location: class FirebaseAuthPlugin.TaskVoidCompleteListener
/Users/margaret 1/Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.8.0+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java:587: error: cannot find symbol
    public void onComplete(@NonNull Task<SignInMethodQueryResult> task) {
                            ^
  symbol:   class NonNull
  location: class FirebaseAuthPlugin.GetSignInMethodsCompleteListener
/Users/margaret 1/Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.8.0+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java:186: error: cannot find symbol
                      public void onComplete(@NonNull Task<AuthResult> task) {
                                              ^
  symbol: class NonNull
/Users/margaret 1/Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.8.0+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java:445: error: cannot find symbol
              public void onComplete(@NonNull Task<GetTokenResult> task) {
                                      ^
  symbol: class NonNull
/Users/margaret 1/Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.8.0+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java:499: error: cannot find symbol
          public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
                                          ^
  symbol: class NonNull
Note: /Users/margaret 1/Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.8.0+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
9 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 9s
Gradle task assembleDebug failed with exit code 1
Exited (sigterm)

[wouterhardeman]

This is caused by: #27106 You will need to downgrade to 0.6.7 or update the compileSdkVersion in android/app/build.gradle to 28.

[BitKnitting]

Thank you. I updated compleSdkVersion to 28 (android/app/build.gradle) get same error.

[wouterhardeman]

I would downgrade for now while the Flutter team is working on a solution.

[dev-vinicius]

Here i put this in file: android/gradle.properties:

android.useAndroidX=true
android.enableJetifier=true

and changed targetSdkVersion to 28 and it worked.

[BitKnitting]

Thank you. Putting these two properties in gradle.properties worked for me also. I still get: registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection) which I am ignoring. It does look messy.

[yuryeuceda]

You can visit my answer to solve it.

https://stackoverflow.com/questions/52409592/flutter-build-failed-with-an-exception/54394055#54394055

[zoechi]

Duplicate of #27106

[alexandranb]

This is caused by: #27106 You will need to downgrade to 0.6.7 or update the compileSdkVersion in android/app/build.gradle to 28.

Do you mean to downgrade firebase_auth: 0.8.0+1 to 0.6.0+1?
If so, what is the point of the new firebase_auth plugin update if it doesn't work?

Thanks

Here i put this in file: android/gradle.properties:

android.useAndroidX=true
android.enableJetifier=true

and changed targetSdkVersion to 28 and it worked.

I added

android.useAndroidX=true
android.enableJetifier=true

to android/gradle.properties and changed targetSdkVersion to 28 and it didn't work for me.

[krngd2]

Here i put this in file: android/gradle.properties:

android.useAndroidX=true
android.enableJetifier=true

and changed targetSdkVersion to 28 and it worked.

I added

android.useAndroidX=true
android.enableJetifier=true

to android/gradle.properties and changed targetSdkVersion to 28 and it didn't work for me.

Yep, this isnt working for me too

[mb-mb]

isn't for me too

[zoechi]

You need to set minSdkVersion to 21 or add a dependency (don't remember) it's mentioned in the migration docs.