因此，作为一个作业，从拼贴我必须使一个简单的登录应用程序使用指纹，我跟随这个视频：How to Make a FingerPrint Authentication System in Android Studio and Java
但我得到一些错误，没有解释，我找不到答案的形式，这是我的代码：

package com.example.actividad14;

import androidx.annotation.NonNull;
import androidx.annotation.RequiresApi;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.content.ContextCompat;

import android.graphics.Color;
import android.hardware.biometrics.BiometricManager;
import android.hardware.biometrics.BiometricPrompt;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import java.util.concurrent.Executor;

public class MainActivity extends AppCompatActivity {

    @RequiresApi(api = Build.VERSION_CODES.Q)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TextView msg_txt = findViewById(R.id.txt_msg);
        Button login_btn = findViewById(R.id.login_btn);

        BiometricManager biometricManager = BiometricManager.from(this);
        switch (biometricManager.canAuthenticate()){
            case BiometricManager.BIOMETRIC_SUCCESS:
                msg_txt.setText("You can use the fingerprint sensor to login");
                msg_txt.setTextColor(Color.parseColor("#Fafafa"));
                break;
            case BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE:
                msg_txt.setText("The device doesn't have a fingerprint sensor");
                login_btn.setVisibility(View.GONE);
                break;
            case BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE:
                msg_txt.setText("The biometric sensor is currently unavailable");
                login_btn.setVisibility(View.GONE);
                break;
            case BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED:
                msg_txt.setText("Your device doesn't have any fingerprint saved, please check your security settings");
                login_btn.setVisibility(View.GONE);
                break;

        }

        Executor executor = ContextCompat.getMainExecutor(this);

        BiometricPrompt biometricPrompt = new BiometricPrompt(MainActivity.this, executor, new androidx.biometric.BiometricPrompt.AuthenticationCallback() {
            @Override
            public void onAuthenticationError(int errorCode, @NonNull CharSequence errString) {
                super.onAuthenticationError(errorCode, errString);
            }

            @Override
            public void onAuthenticationSucceeded(@NonNull androidx.biometric.BiometricPrompt.AuthenticationResult result) {
                super.onAuthenticationSucceeded(result);
                Toast.makeText(getApplicationContext(),"Login Succes!", Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onAuthenticationFailed() {
                super.onAuthenticationFailed();
            }
        });

        final BiometricPrompt.PrompInfo prompInfo = BiometricPrompt.PrompInfo.Builder()
                .setTitle("Login")
                .setDescription("Use your fingerprint to login in your app")
                .setNegativeButtonText("Cancel")
                .build();

        login_btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                biometricPrompt.authenticate(prompInfo);

            }
        });

    }
}

在BiometricManager biometricManager = BiometricManager.from(this);，我得到了“无法解析”biometricmanager“中的方法”from“”，但是我看到的每个视频都说你是这样创建你的BiometricManager的。
在BiometricPrompt biometricPrompt = new BiometricPrompt(MainActivity.this, executor, new androidx.biometric.BiometricPrompt.AuthenticationCallback() {我得到“'生物统计提示'有私人访问'android.硬件.生物统计.生物统计提示'”。
在final BiometricPrompt.PrompInfo prompInfo = BiometricPrompt.PrompInfo.Builder()时，im得到“无法解析提示信息”
最后，在biometricPrompt.authenticate(prompInfo);处，我得到“无法解析方法'（authenticate（BiometricPrompt. PromInfo））'”