Can't show custom ProgressDialog

[hacksoldier98]

I have had this problem for several days.
I can't see my custom progress dialog optimally.

custom progress dialog layout:

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.cardview.widget.CardView
        android:layout_width="0dp"
        android:layout_height="183dp"
        android:layout_marginStart="16dp"
        android:layout_marginEnd="16dp"
        app:cardCornerRadius="8dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <ProgressBar
                android:id="@+id/progressLoading"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="16dp"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintHorizontal_bias="0.498"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/txtProgress" />

            <TextView
                android:id="@+id/txtProgress"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="16dp"
                android:text="Test..."
                android:textAlignment="center"
                android:textColor="@color/black"
                android:textSize="18sp"
                android:textStyle="bold"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintHorizontal_bias="0.495"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent" />

            <TextView
                android:id="@+id/txtProgressCount"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginBottom="16dp"
                android:text="TextView"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintHorizontal_bias="0.501"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/progressBarCount"
                app:layout_constraintVertical_bias="1.0" />

            <ProgressBar
                android:id="@+id/progressBarCount"
                style="?android:attr/progressBarStyleHorizontal"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginTop="12dp"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintHorizontal_bias="0.487"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/progressLoading" />


        </androidx.constraintlayout.widget.ConstraintLayout>


    </androidx.cardview.widget.CardView>

</androidx.constraintlayout.widget.ConstraintLayout>

class:

public class LoadingDialog{

    Context context;
    private Dialog dialog = null;
    public LoadingDialog(Context context) {
        this.context = context;
    }

    public void startLoadingDialog(String title) {
        dialog = new Dialog(context);
        dialog.setContentView(R.layout.custom_progressbar);
        dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        dialog.setCanceledOnTouchOutside(false);
        dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
        TextView txtTitleCount = dialog.findViewById(R.id.txtProgressCount);
        TextView txtTitle = dialog.findViewById(R.id.txtProgress);
        ProgressBar barCount = dialog.findViewById(R.id.progressBarCount);
        txtTitle.setText(title);
        txtTitleCount.setVisibility(View.GONE);
        barCount.setVisibility(View.GONE);
        dialog.setCancelable(false);
        dialog.create();
        dialog.show();


    }

    public void dismissDialog() {
        dialog.dismiss();
    }


}

Main (where I call the progress dialog):

final LoadingDialog loadingDialog = new LoadingDialog(this);

                ExecutorService service = Executors.newFixedThreadPool(10);
                service.execute(() -> {
                    runOnUiThread(() -> loadingDialog.startLoadingDialog("prova"));
                    SystemClock.sleep(1000);

                    runOnUiThread(loadingDialog::dismissDialog);

                });

the screen remains dark but is not presented in front of the dialog