如何自定义Android Facebook登录按钮？

implementation 'com.facebook.android:facebook-android-sdk:12.1.0'

<uses-permission android:name="android.permission.INTERNET" />

<meta-data
    android:name="com.facebook.sdk.ApplicationId"
    android:value="@string/facebook_app_id" />

<Button
    android:id="@+id/facebook_login_button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Facebook登录" />

import com.facebook.CallbackManager;
import com.facebook.FacebookCallback;
import com.facebook.FacebookException;
import com.facebook.login.LoginManager;
import com.facebook.login.LoginResult;

public class MainActivity extends AppCompatActivity {

    private CallbackManager callbackManager;

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

        // 初始化Facebook SDK
        FacebookSdk.sdkInitialize(getApplicationContext());
        callbackManager = CallbackManager.Factory.create();

        Button facebookLoginButton = findViewById(R.id.facebook_login_button);
        facebookLoginButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // 设置Facebook登录权限
                LoginManager.getInstance().logInWithReadPermissions(MainActivity.this, Arrays.asList("public_profile", "email"));

                // 注册登录回调
                LoginManager.getInstance().registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
                    @Override
                    public void onSuccess(LoginResult loginResult) {
                        // 登录成功回调
                        // 处理登录成功逻辑
                    }

                    @Override
                    public void onCancel() {
                        // 用户取消登录回调
                        // 处理用户取消登录逻辑
                    }

                    @Override
                    public void onError(FacebookException error) {
                        // 登录错误回调
                        // 处理登录错误逻辑
                    }
                });
            }
        });
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        callbackManager.onActivityResult(requestCode, resultCode, data);
    }
}