I want to create a plugin using biometric authentication (Biometric) provided by Google and implement it in Unity - unity3d

Question

I would like to implement biometric authentication using the biometrics provided by Googole, but I am having trouble getting it to work.
The following is a reference site on biometrics.
https://developer.android.com/jetpack/androidx/releases/biometric
I've never made an Android plugin before, and I'm having a hard time finding information on how to integrate with Unity.
I'm testing it with the following code
java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/activity/ComponentActivity;
java.lang.ClassNotFoundException: androidx.activity.ComponentActivity
I'm getting an error and don't know how to fix it.
Please help me. Please help me.
◇MainActivity.java
package com.example.biometricslibs;
import android.content.Context;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.biometric.BiometricPrompt;
import androidx.fragment.app.FragmentActivity;
import java.util.concurrent.Executor;
public class MainActivity {
public static MainActivity instance() {
return new MainActivity();
}
private Executor executor = new MainThreadExecutor();
private BiometricPrompt biometricPrompt;
private BiometricPrompt.AuthenticationCallback callback = new BiometricPrompt.AuthenticationCallback() {
#Override
public void onAuthenticationError(int errorCode, #NonNull CharSequence errString) {
super.onAuthenticationError(errorCode, errString);
if (errorCode == 13 && biometricPrompt != null)
biometricPrompt.cancelAuthentication();
}
#Override
public void onAuthenticationSucceeded(#NonNull BiometricPrompt.AuthenticationResult result) {
super.onAuthenticationSucceeded(result);
}
#Override
public void onAuthenticationFailed() {
super.onAuthenticationFailed();
}
};
public void BiometricCheck(Context context) {
Toast.makeText(context, "call", Toast.LENGTH_SHORT).show();
biometricPrompt = new BiometricPrompt((FragmentActivity) context, executor, callback);
BiometricPrompt.PromptInfo promptInfo = new BiometricPrompt.PromptInfo.Builder()
.setTitle("title")
.setSubtitle("subTitle")
.setDescription("description")
.setNegativeButtonText("cancel")
.build();
biometricPrompt.authenticate(promptInfo);
}
}
◇MainThreadExecutor.java
package com.example.biometricslibs;
import android.os.Handler;
import android.os.Looper;
import java.util.concurrent.Executor;
public class MainThreadExecutor implements Executor {
private final Handler handler = new Handler(Looper.getMainLooper());
#Override
public void execute(Runnable r) {
handler.post(r);
}
}
◇UnityC#
using(var nativeDialog = new AndroidJavaClass("com.example.biometricslibs.MainActivity"))
{
using(var unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
{
using(var currentUnityActivity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity"))
{
using(var instance = nativeDialog.CallStatic<AndroidJavaObject>("instance"))
{
instance.Call(
"BiometricCheck",
currentUnityActivity
);
}
}
}
}