C:\flutter.pub-cache\hosted\pub.dartlang.org\firebase_auth-0.11.1+12\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
C:\flutter.pub-cache\hosted\pub.dartlang.org\firebase_auth-0.11.1+12\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
C:\flutter.pub-cache\hosted\pub.dartlang.org\firebase_auth-0.11.1+12\android\src\main\java\io\flutter\plugins\firebaseauth\FirebaseAuthPlugin.java:759: error: cannot find symbol
private void reportException(Result result, @Nullable Exception exception) {
^
symbol: class Nullable
location: class FirebaseAuthPlugin
C:\flutter.pub-cache\hosted\pub.dartlang.org\firebase_auth-0.11.1+12\android\src\main\java\io\flutter\plugins\firebaseauth\FirebaseAuthPlugin.java:668: error: cannot find symbol
public void onComplete(@NonNull Task task) {
^
symbol: class NonNull
location: class FirebaseAuthPlugin.SignInCompleteListener
C:\flutter.pub-cache\hosted\pub.dartlang.org\firebase_auth-0.11.1+12\android\src\main\java\io\flutter\plugins\firebaseauth\FirebaseAuthPlugin.java:687: error: cannot find symbol
public void onComplete(@NonNull Task task) {
^
symbol: class NonNull
location: class FirebaseAuthPlugin.TaskVoidCompleteListener
C:\flutter.pub-cache\hosted\pub.dartlang.org\firebase_auth-0.11.1+12\android\src\main\java\io\flutter\plugins\firebaseauth\FirebaseAuthPlugin.java:705: error: cannot find symbol
public void onComplete(@NonNull Task task) {
^
symbol: class NonNull
location: class FirebaseAuthPlugin.GetSignInMethodsCompleteListener
C:\flutter.pub-cache\hosted\pub.dartlang.org\firebase_auth-0.11.1+12\android\src\main\java\io\flutter\plugins\firebaseauth\FirebaseAuthPlugin.java:540: error: cannot find symbol
public void onComplete(@NonNull Task task) {
^
symbol: class NonNull
C:\flutter.pub-cache\hosted\pub.dartlang.org\firebase_auth-0.11.1+12\android\src\main\java\io\flutter\plugins\firebaseauth\FirebaseAuthPlugin.java:617: error: cannot find symbol
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
^
symbol: class NonNull
8 errors
The Gradle failure may have been because of AndroidX incompatibilities in this Flutter app.
See https://goo.gl/CP92wY for more information on the problem and how to fix it.
Finished with error: Gradle task assembleDebug failed with exit code 1
C:\flutter.pub-cache\hosted\pub.dartlang.org\firebase_auth-0.11.1+12\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 C:\flutter.pub-cache\hosted\pub.dartlang.org\firebase_auth-0.11.1+12\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 C:\flutter.pub-cache\hosted\pub.dartlang.org\firebase_auth-0.11.1+12\android\src\main\java\io\flutter\plugins\firebaseauth\FirebaseAuthPlugin.java:759: error: cannot find symbol private void reportException(Result result, @Nullable Exception exception) { ^ symbol: class Nullable location: class FirebaseAuthPlugin C:\flutter.pub-cache\hosted\pub.dartlang.org\firebase_auth-0.11.1+12\android\src\main\java\io\flutter\plugins\firebaseauth\FirebaseAuthPlugin.java:668: error: cannot find symbol public void onComplete(@NonNull Task task) {
^
symbol: class NonNull
location: class FirebaseAuthPlugin.SignInCompleteListener
C:\flutter.pub-cache\hosted\pub.dartlang.org\firebase_auth-0.11.1+12\android\src\main\java\io\flutter\plugins\firebaseauth\FirebaseAuthPlugin.java:687: error: cannot find symbol
public void onComplete(@NonNull Task task) {
^
symbol: class NonNull
location: class FirebaseAuthPlugin.TaskVoidCompleteListener
C:\flutter.pub-cache\hosted\pub.dartlang.org\firebase_auth-0.11.1+12\android\src\main\java\io\flutter\plugins\firebaseauth\FirebaseAuthPlugin.java:705: error: cannot find symbol
public void onComplete(@NonNull Task task) {
^
symbol: class NonNull
location: class FirebaseAuthPlugin.GetSignInMethodsCompleteListener
C:\flutter.pub-cache\hosted\pub.dartlang.org\firebase_auth-0.11.1+12\android\src\main\java\io\flutter\plugins\firebaseauth\FirebaseAuthPlugin.java:540: error: cannot find symbol
public void onComplete(@NonNull Task task) {
^
symbol: class NonNull
C:\flutter.pub-cache\hosted\pub.dartlang.org\firebase_auth-0.11.1+12\android\src\main\java\io\flutter\plugins\firebaseauth\FirebaseAuthPlugin.java:617: error: cannot find symbol
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
^
symbol: class NonNull
8 errors
The Gradle failure may have been because of AndroidX incompatibilities in this Flutter app. See https://goo.gl/CP92wY for more information on the problem and how to fix it.
Finished with error: Gradle task assembleDebug failed with exit code 1