将Google、Facebook和LinkedIn的Firebase登录概括为一个Java文件

这是我的

FirebaseAuthentication类

，它包含所有身份验证方法，如

registerUserWithEmailandPassword

，

loginUserWithEmailandPassword

，

getCurrentUser

，

signOutUser

，

getUserProfile

，

updateUserName

，

updateProfilePhoto

，

更新邮件地址

，

发送验证邮件

，

更改密码

，

发送重置链接

，

删除账户

。它们都工作正常

现在我想包括允许用户登录Google和Facebook的方法。但我无法做到这一点

我想使这个类泛化，以便在我未来的项目中使用它

我怎样才能做到这一点

请参考下面的代码

public class FirebaseAuthentication {

private Activity mContext;
private FirebaseAuth mAuth;
private OnComplete mOnComplete;

public FirebaseAuthentication(Activity context) {
    mContext = context;
    mAuth = FirebaseAuth.getInstance();
}

public void registerUserWithEmailandPassword(String username, String password) {
    mAuth.createUserWithEmailAndPassword(username, password).addOnCompleteListener(mContext, new MyCompleteListener());
}

public void loginUserWithEmailandPassword(String username, String password) {
    mAuth.signInWithEmailAndPassword(username, password).addOnCompleteListener(mContext, new MyCompleteListener());
}

public FirebaseUser getCurrentUser() {
    FirebaseUser user = mAuth.getCurrentUser();
    return user;
}

public void signOutUser() {
    mAuth.signOut();
    mContext.startActivity(new Intent(mContext, LoginActivity.class));
}

public User getUserProfile() {
    FirebaseUser firebaseUser = getCurrentUser();
    User user = new User();
    if (firebaseUser != null) {
        user.setName(firebaseUser.getDisplayName());
        user.setEmail(firebaseUser.getEmail());
        user.setPhotoUrl(firebaseUser.getPhotoUrl());
        user.setUid(firebaseUser.getUid());
        user.setVerifiedEmail(firebaseUser.isEmailVerified());
    }
    return user;
}

public void updateUserName(String name) {
    FirebaseUser firebaseUser = getCurrentUser();
    if (firebaseUser != null) {
        UserProfileChangeRequest profileUpdates = new UserProfileChangeRequest.Builder()
                .setDisplayName(name)
                .build();
        firebaseUser.updateProfile(profileUpdates).addOnCompleteListener(new MyCompleteListener());
    }
}

public void updateProfilePhoto(String uri) {
    FirebaseUser firebaseUser = getCurrentUser();
    if (firebaseUser != null) {
        UserProfileChangeRequest profileUpdates = new UserProfileChangeRequest.Builder()
                .setPhotoUri(Uri.parse(uri))
                .build();
        firebaseUser.updateProfile(profileUpdates).addOnCompleteListener(new MyCompleteListener());
    }
}

public void updateEmailAddress(String email) {
    FirebaseUser firebaseUser = getCurrentUser();
    if (firebaseUser != null) {
        firebaseUser.updateEmail(email).addOnCompleteListener(new MyCompleteListener());
    }
}

public void sendVerificationMail() {
    FirebaseUser firebaseUser = getCurrentUser();
    firebaseUser.sendEmailVerification().addOnCompleteListener(new MyCompleteListener());
}

public void changePassword(String password) {
    FirebaseUser user = getCurrentUser();
    if (user != null) {
        String newPassword = password;
        user.updatePassword(newPassword).addOnCompleteListener(new MyCompleteListener());
    }
}

public void sendResetLink(String email) {
    FirebaseAuth auth = FirebaseAuth.getInstance();
    String emailAddress = email;
    auth.sendPasswordResetEmail(emailAddress).addOnCompleteListener(new MyCompleteListener());
}

public void deleteAccount() {
    FirebaseUser user = getCurrentUser();
    if (user != null) {
        user.delete().addOnCompleteListener(new MyCompleteListener());
    }
}

public interface OnComplete {
    void onSuccessListner();
    void onFailureListner(String message);
}

public void setOnCompleteListener(OnComplete onCompleteListener) {
    mOnComplete = onCompleteListener;
}

private class MyCompleteListener implements OnCompleteListener {

    @Override
    public void onComplete(@NonNull Task task) {
        if (task.isSuccessful()) {
            mOnComplete.onSuccessListner();
        }else {
            mOnComplete.onFailureListner(task.getException().getLocalizedMessage());
        }
      }
   }
}

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您为什么/如何才能做到这一点？你有什么错误吗？这个代码怎么了？您有任何错误吗？上面的代码工作正常。我只是想知道如何在这个类中添加登录Facebook和Google的方法。由于Google SignIn调用startActivityForResult（）方法，我不知道如何在FirebaseAuthentication类中重写onActivityResult方法。