使用较新布局使用Firebase验证的简单方法是什么？

Question

我已设置了用户注册活动。对于使用我的登录活动来检查用户数据以进行检查，这是一个简单但很好的做法。以下是我的注册活动。任何帮助我了解如何这样做甚至可能对我的SignUp活动进行改进/更正的事情将不胜感激

SignupActvity.java

package test.calendar;

import android.app.ProgressDialog;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import butterknife.Bind;
import butterknife.ButterKnife;

import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;


public class SignupActivity extends AppCompatActivity {
private static final String TAG = "SignupActivity";


//BIND VIEWS
@Bind(R.id.input_name) EditText _nameText;
@Bind(R.id.input_email) EditText _emailText;
@Bind(R.id.input_password) EditText _passwordText;
@Bind(R.id.btn_signup) Button _signupButton;
@Bind(R.id.link_login) TextView _loginLink;


// [START declare_auth]
private FirebaseAuth mAuth;
// [END declare_auth]

// [START declare_auth_listener]
private FirebaseAuth.AuthStateListener mAuthListener;
// [END declare_auth_listener]

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_signup);
    ButterKnife.bind(this);
    //BUTTERKNIFE
    _signupButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            signup();
        }
    });

    _loginLink.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            // Finish the registration screen and return to the Login activity
            finish();
        }
    });

    // [START initialize_auth]
    mAuth = FirebaseAuth.getInstance();
    // [END initialize_auth]

    // [START auth_state_listener]
    mAuthListener = new FirebaseAuth.AuthStateListener() {
        @Override
        public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
            FirebaseUser user = firebaseAuth.getCurrentUser();
            if (user != null) {
                // User is signed in
                Log.d(TAG, "onAuthStateChanged:signed_in:" + user.getUid());
            } else {
                // User is signed out
                Log.d(TAG, "onAuthStateChanged:signed_out");
            }
            // [START_EXCLUDE]
            //updateUI(user);
            // [END_EXCLUDE]
        }
    };
    // [END auth_state_listener]
}


// [START on_start_add_listener]
@Override
public void onStart() {
    super.onStart();
    mAuth.addAuthStateListener(mAuthListener);
}
// [END on_start_add_listener]

// [START on_stop_remove_listener]
@Override
public void onStop() {
    super.onStop();
    if (mAuthListener != null) {
        mAuth.removeAuthStateListener(mAuthListener);
    }
}
// [END on_stop_remove_listener]


public void signup() {
    Log.d(TAG, "Signup");

    if (!validate()) {
        onSignupFailed();
        return;
    }

    _signupButton.setEnabled(false);

    final ProgressDialog progressDialog = new ProgressDialog(SignupActivity.this,
            R.style.AppTheme_Dark_Dialog);
    progressDialog.setIndeterminate(true);
    progressDialog.setMessage("Creating Account...");
    progressDialog.show();

    String name = _nameText.getText().toString();
    String email = _emailText.getText().toString();
    String password = _passwordText.getText().toString();

    // TODO: Implement your own signup logic here.


    // [START sign_in_with_email]
    mAuth.signInWithEmailAndPassword(email, password)
            .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                @Override
                public void onComplete(@NonNull Task<AuthResult> task) {
                    Log.d(TAG, "signInWithEmail:onComplete:" + task.isSuccessful());

                    // If sign in fails, display a message to the user. If sign in succeeds
                    // the auth state listener will be notified and logic to handle the
                    // signed in user can be handled in the listener.
                    if (!task.isSuccessful()) {
                        Log.w(TAG, "signInWithEmail", task.getException());
                        Toast.makeText(getApplicationContext(), "Authentication failed.",
                                Toast.LENGTH_SHORT).show();  //TODO: Is this the right toast?
                    }

                    // [START_EXCLUDE]
                    progressDialog.dismiss();
                    // [END_EXCLUDE]
                }
            });
    // [END sign_in_with_email]
}


//        new android.os.Handler().postDelayed(
//                new Runnable() {
//                    public void run() {
//                        // On complete call either onSignupSuccess or onSignupFailed
//                        // depending on success
//                        onSignupSuccess();
//                        // onSignupFailed();
//                        progressDialog.dismiss();
//                    }
//                }, 3000);
//    }



public void onSignupSuccess() {
    _signupButton.setEnabled(true);
    setResult(RESULT_OK, null);
    finish();
}

public void onSignupFailed() {
    Toast.makeText(getBaseContext(), "Login failed", Toast.LENGTH_LONG).show();

    _signupButton.setEnabled(true);
}

public boolean validate() {
    boolean valid = true;

    String name = _nameText.getText().toString();
    String email = _emailText.getText().toString();
    String password = _passwordText.getText().toString();

    if (name.isEmpty() || name.length() < 3) {
        _nameText.setError("at least 3 characters");
        valid = false;
    } else {
        _nameText.setError(null);
    }

    if (email.isEmpty() || !android.util.Patterns.EMAIL_ADDRESS.matcher(email).matches()) {
        _emailText.setError("enter a valid email address");
        valid = false;
    } else {
        _emailText.setError(null);
    }

    if (password.isEmpty() || password.length() < 4 || password.length() > 10) {
        _passwordText.setError("between 4 and 10 alphanumeric characters");
        valid = false;
    } else {
        _passwordText.setError(null);
    }

    return valid;
}

}