*BindingImpl class : cannot inherit from final *Binding

Question

I got this error in the generated BindingImpl class but the binding class is not final, it is abstract...

BindingImpl class :

public class FragmentImageBindingImpl extends FragmentImageBinding implements com.example.memoriserlesnombres.generated.callback.OnClickListener.Listener {
...
}

Binding class:

public abstract class FragmentImageBinding extends ViewDataBinding {
...
}

Any ideas ?

I already try to clean/rebuilt project, invalidate caches/restart and reinstall android studio without success. I saw another post saying to delete plugin files but they don't exist.

I'm new to android, but it seems very buggy to me :/

EDIT : I still have the error (in the class) but my app works fine, so I think I can ignore it, this is just an Android Studio issue.

Here is the xml :

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools">

    <data>

        <variable
            name="view"
            type="com.example.memoriserlesnombres.image.ImageViewModel" />
    </data>

    <androidx.coordinatorlayout.widget.CoordinatorLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            tools:context=".image.ImageFragment">

            <TextView
                android:id="@+id/current_number"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@{Integer.toString(view.currentNumber)}"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent" />

            <com.google.android.material.textfield.TextInputLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/current_number">

                <com.google.android.material.textfield.TextInputEditText
                    android:id="@+id/associated_image"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:hint="@string/hint"
                    android:text="@={view.image}" />
            </com.google.android.material.textfield.TextInputLayout>

        </androidx.constraintlayout.widget.ConstraintLayout>

        <com.google.android.material.floatingactionbutton.FloatingActionButton
            android:id="@+id/fab"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="end|bottom"
            android:layout_margin="16dp"
            android:contentDescription="@string/save_image"
            android:onClick="@{() -> view.saveImage()}"
            app:srcCompat="@drawable/ic_done_black_24dp" />

    </androidx.coordinatorlayout.widget.CoordinatorLayout>
</layout>

Answer 1

In one of your layout xml files, remove the <layout> tag and add it back.

This solved a similar issue in my project.