getSupportFragmentManager () non è accessibile

Question

Sto creando un esempio di base e ottengo questi 2 errori.

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.net.Uri;
import android.view.Gravity;
import android.view.MotionEvent;
import android.widget.ImageButton;
import android.widget.Toast;
import com.google.ar.core.Anchor;
import com.google.ar.core.HitResult;
import com.google.ar.core.Plane;
import com.google.ar.sceneform.AnchorNode;
import com.google.ar.sceneform.rendering.ModelRenderable;
import com.google.ar.sceneform.ux.ArFragment;
import com.google.ar.sceneform.ux.BaseArFragment;
import com.google.ar.sceneform.ux.TransformableNode;
import com.google.ar.sceneform.math.Quaternion;
import com.google.ar.sceneform.math.Vector3;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    private ArFragment arFragment;
    private ModelRenderable modelRenderable;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        arFragment = (ArFragment) getSupportFragmentManager().findFragmentById(R.id.fragment);

Ottenere un errore:

Inconvertible types; cannot cast 'androidx.fragment.app.Fragment' to 'com.google.ar.sceneform.ux.ArFragment'

Ho aggiunto l'importazione per il frammento?

1. Fornendo anche questo errore durante la compilazione.

   sceneformsrc \ sceneform \ src \ main \ java \ com \ google \ ar \ sceneform \ AnchorNode.java: 3: errore: pacchetto android.support.annotation non esiste import android.support.annotation.Nullable;

manca qualcosa che ricevo questi errori?

Sto usando Sceneform 1.16 e Andriod Studio 4.1

Answer 1

<fragment
        android:id="@+id/face_fragment"
        android:name="com.google.ar.sceneform.ux.ArFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

Hai menzionato il tag android: name?