java - 在我的手机上使用 android studio 时，创建帐户不适用于 firebase

Question

所以，我刚刚开始使用 Firebase，当我使用手机或模拟器时，似乎无法创建帐户。我不确定问题是什么，但是当我单击创建帐户按钮时，它只向我显示“用户已存在”toast，但没有具有相同电子邮件地址的用户，并且下一个 Activity 不会打开。

开始 Activity

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;

public class StartActivity extends AppCompatActivity {

    private Button mRegBtn;
    private ImageView imageView;
    private Button mLogInBtn;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_start);
        imageView= (ImageView)findViewById(R.id.imageView);
        imageView.setImageResource(R.drawable.mocha);
        mRegBtn= (Button)findViewById(R.id.start_reg_btn);
        mLogInBtn=(Button)findViewById(R.id.start_login_btn);


        mRegBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent reg_intent= new Intent(StartActivity.this, RegisterActivity.class);
                startActivity(reg_intent);
            }
        });

        mLogInBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent login_intent= new Intent(StartActivity.this, LoginActivity.class);
                startActivity(login_intent);
            }
        });

    }
}

登录 Activity

import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.design.widget.TextInputLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
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;

public class LoginActivity extends AppCompatActivity {

    private Button login_btn;
    private TextInputLayout login_email;
    private TextInputLayout login_password;
    private FirebaseAuth mAuth;
    private Toolbar mToolbar;
    private Button create_acct_btn;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        login_email=(TextInputLayout)findViewById(R.id.login_email);
        login_password=(TextInputLayout)findViewById(R.id.login_password);
        login_btn= (Button)findViewById(R.id.login_btn);
        mToolbar=(Toolbar)findViewById(R.id.login_toolbar);
        setSupportActionBar(mToolbar);
        getSupportActionBar().setTitle("Login");
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        mAuth = FirebaseAuth.getInstance();
        create_acct_btn=(Button)findViewById(R.id.create_acct_btn);

        login_btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String displayName = login_email.getEditText().getText().toString();
                String loginPassword = login_password.getEditText().getText().toString();

                if (displayName.equals("") || loginPassword.equals("")) {
                    Toast.makeText(LoginActivity.this, "Complete fields", Toast.LENGTH_LONG).show();
                }
                else{
                    signIn(displayName, loginPassword);
                }
            }
        });

        create_acct_btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent createAcc= new Intent(LoginActivity.this, RegisterActivity.class);
                startActivity(createAcc);

            }
        });

    }

    private void signIn(String email, String password) {
        mAuth.signInWithEmailAndPassword(email, password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
            @Override
            public void onComplete(@NonNull Task<AuthResult> task) {
                if (task.isSuccessful()) {
                    Intent loginHome= new Intent(LoginActivity.this, MainActivity.class);
                    startActivity(loginHome);
                    finish();
                }
                else{
                    Toast.makeText(LoginActivity.this, "User does not exist", Toast.LENGTH_LONG).show();
                }
            }
        });
    }
}

注册 Activity

import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.design.widget.TextInputLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import android.support.v7.widget.Toolbar;

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;


public class RegisterActivity extends AppCompatActivity {

    private TextInputLayout mDisplayName;
    private TextInputLayout mEmail;
    private TextInputLayout mPassword;
    private Button mCreateBtn;
    private FirebaseAuth mAuth;
    private Toolbar mToolbar;
    private Button login_acct_btn;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        mAuth = FirebaseAuth.getInstance();
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);
        mDisplayName = (TextInputLayout) findViewById(R.id.reg_display_name);
        mEmail = (TextInputLayout) findViewById(R.id.reg_email);
        mPassword = (TextInputLayout) findViewById(R.id.reg_password);
        mCreateBtn = (Button) findViewById(R.id.reg_create_btn);
        mToolbar = (Toolbar) findViewById(R.id.register_toolbar);
        setSupportActionBar(mToolbar);
        getSupportActionBar().setTitle("Create Account");
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        login_acct_btn= (Button)findViewById(R.id.login_acct_btn);

        mCreateBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String display_name = mDisplayName.getEditText().getText().toString();
                String email = mEmail.getEditText().getText().toString();
                String password = mPassword.getEditText().getText().toString();
                if (email.equals("") || password.equals("") || display_name.equals("")) {
                    Toast.makeText(RegisterActivity.this, "Complete Fields", Toast.LENGTH_LONG).show();
                } else {
                    registerUser(display_name, email, password);
                }

            }
        });

        login_acct_btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent loginAcc= new Intent(RegisterActivity.this, LoginActivity.class);
                startActivity(loginAcc);
            }
        });

    }

    private void registerUser(final String display_name, final String email, final String password) {
        mAuth.createUserWithEmailAndPassword(email, password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
            @Override
            public void onComplete(@NonNull Task<AuthResult> task) {
                if (task.isSuccessful() && email.length() > 5) {
                    Intent mainIntent = new Intent(RegisterActivity.this, MainActivity.class);
                    startActivity(mainIntent);
                    finish();
                }
                else if(email.length() < 5){
                    Toast.makeText(RegisterActivity.this, "Make email longer", Toast.LENGTH_LONG).show();
                }
                else if(password.length() < 5){
                    Toast.makeText(RegisterActivity.this, "Password must be 5 or more characters", Toast.LENGTH_LONG).show();
                }
                else {
                    Toast.makeText(RegisterActivity.this, "User already exists", Toast.LENGTH_LONG).show();
                }
            }
        });

    }
}

主要 Activity

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;

public class MainActivity extends AppCompatActivity {

    private FirebaseAuth mAuth;
    private Toolbar mToolbar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mAuth = FirebaseAuth.getInstance();
        mToolbar=(Toolbar)findViewById(R.id.main_page_toolbar);
        setSupportActionBar(mToolbar);
        getSupportActionBar().setTitle("Mocha");

    }

    public void onStart() {
        super.onStart();
        // Check if user is signed in (non-null) and update UI accordingly.
        FirebaseUser currentUser = mAuth.getCurrentUser();

        if(currentUser == null){
           sendToStart();
        }
    }

    private void sendToStart(){
        Intent startIntent= new Intent(MainActivity.this, StartActivity.class);
        startActivity(startIntent);
        finish();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);
        getMenuInflater().inflate(R.menu.main_menu, menu);


        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        super.onOptionsItemSelected(item);

        if(item.getItemId() == R.id.main_logout_btn){
            FirebaseAuth.getInstance().signOut();
            sendToStart();
        }


        return true;


    }
}

list

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".StartActivity" />
        <activity
            android:name=".RegisterActivity"
            android:parentActivityName=".StartActivity" />
        <activity android:name=".LoginActivity"
            android:parentActivityName=".StartActivity"/>
    </application>

</manifest>

如有任何帮助，我们将不胜感激!

Answer 1

问题可能是 -

private void registerUser(final String display_name, final String email, final String password) {
        mAuth.createUserWithEmailAndPassword(email, password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
            @Override
            public void onComplete(@NonNull Task<AuthResult> task) {
                if (task.isSuccessful() && email.length() > 5) {
                    Intent mainIntent = new Intent(RegisterActivity.this, MainActivity.class);
                    startActivity(mainIntent);
                    finish();
                }
                else if(email.length() < 5){
                    Toast.makeText(RegisterActivity.this, "Make email longer", Toast.LENGTH_LONG).show();
                }
                else if(password.length() < 5){
                    Toast.makeText(RegisterActivity.this, "Password must be 5 or more characters", Toast.LENGTH_LONG).show();
                }
                else {
                    Toast.makeText(RegisterActivity.this, "User already exists", Toast.LENGTH_LONG).show();
                }
            }
        });

    }

当用户成功创建并且电子邮件长度大于 5 时，才会进入主要 Activity 。但是当任何一个条件为假时，它就会转移到 else if。

我认为email.length()>5条件不能为假。所以 task.isSuccessful() 似乎是错误的。这意味着用户尚未创建。因此，身份验证规则(即登录方法)似乎存在问题。所以检查一次。

此外，您可以使用 task.getException() 准确检查错误所在，请参阅下面的代码 -

mAuth.createUserWithEmailAndPassword(email, password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
    @Override
    public void onComplete(@NonNull Task<AuthResult> task) {
        if (task.isSuccessful()) {
            Intent mainIntent = new Intent(RegisterActivity.this, MainActivity.class);
            startActivity(mainIntent);
            finish();
        }
        else {
            Log.i("Error is ", task.getException().toString());
        }
    }
});