将数据写入 Firebase 数据库

Question

通过 Android Studio 编写超级克隆，第一次使用 Firebase。但是，每次我点击注册用户时，我都会收到一个错误，并且没有输入任何内容。

当我在模拟器上时，我转到 DriverLoginActivity，输入我的详细信息进行注册，无论输入什么，我都会收到请检查用户名和密码要求。但他们都匹配，电子邮件格式和密码超过 6 位。无论我做什么，我都无法将新用户注册到数据库

Firebase 已连接，所有依赖项均已设置。 JSON 已导入并更正 SHA1 密钥。我已经在模拟器和我的 phone 上试过了，所以我知道它不是互联网。我这辈子都想不通。

Firebase 设置为实时数据库，具有电子邮件和密码身份验证。读写规则也设置为true。

如有任何见解，我们将不胜感激。

MainActivity.java

public class MainActivity extends AppCompatActivity {
private Button mDriver, mCustomer;


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

    //Call Buttons
    mDriver = findViewById(R.id.driver);
    mCustomer = findViewById(R.id.customer);

   mDriver.setOnClickListener(new View.OnClickListener()
    {
        @Override
        public void onClick(View v)
        {
            Intent intent = new Intent(MainActivity.this, DriverLoginActivity.class);
            startActivity(intent);
            finish();
            return;
        }
    });

    mCustomer.setOnClickListener(new View.OnClickListener()
    {
        @Override
        public void onClick(View v)
        {
            Intent intent = new Intent(MainActivity.this, CustomerLoginActivity.class);
            startActivity(intent);
            finish();
            return;
        }
    });





}

}

DriverLoginActivity.java

public class DriverLoginActivity extends AppCompatActivity {
private EditText mEmail, mPassword;
private Button mLogin, mRegister;

private FirebaseAuth mAuth;
private FirebaseAuth.AuthStateListener firebaseAuthListener;

@Override
protected void onCreate(Bundle savedInstanceState) {
    FirebaseDatabase database = FirebaseDatabase.getInstance();



    FirebaseDatabase.getInstance().getReference("Users").child("Drivers");;

    mAuth = FirebaseAuth.getInstance();
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_driver_login);
    getSupportActionBar().setTitle("Hippo Drivers");
    mAuth = FirebaseAuth.getInstance();
    firebaseAuthListener = new FirebaseAuth.AuthStateListener() {
        @Override
        public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
            FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
            if (user != null) {
                Intent intent = new Intent(DriverLoginActivity.this, MapActivity.class);
                startActivity(intent);
                finish();
                return;
            }
        }
    };

    mEmail = findViewById(R.id.email);
    mPassword = findViewById(R.id.password);

    mLogin = findViewById(R.id.login);
    mRegister = findViewById(R.id.register);

    mRegister.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            final String email = mEmail.getText().toString();
            final String password = mPassword.getText().toString();
            Log.d("Done","Email and password to string");
            mAuth.createUserWithEmailAndPassword(email, password).addOnCompleteListener(DriverLoginActivity.this, new OnCompleteListener<AuthResult>() {
                @Override
                public void onComplete(@NonNull Task<AuthResult> task) {
                    if(!task.isSuccessful())
                    {

                        Toast.makeText(DriverLoginActivity.this, "Error - Please check username and password requirements", Toast.LENGTH_SHORT).show();
                    }
                    else
                    {
                        String user_id = mAuth.getCurrentUser().getUid();
                        DatabaseReference current_user_db = FirebaseDatabase.getInstance().getReference().child("Users").child("Drivers").child(user_id);
                        current_user_db.setValue(true);
                    }
                }
            });
        }
    });

    mRegister.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            final String email = mEmail.getText().toString();
            final String password = mPassword.getText().toString();
            mAuth.signInWithEmailAndPassword(email, password).addOnCompleteListener(DriverLoginActivity.this, new OnCompleteListener<AuthResult>() {
                @Override
                public void onComplete(@NonNull Task<AuthResult> task) {
                    if(!task.isSuccessful())
                    {
                        Toast.makeText(DriverLoginActivity.this, "Error - Please check username and/or password", Toast.LENGTH_SHORT).show();
                    }
                    else
                    {
                        //REGISTERED
                    }
                }

            });
        }
    });
}

@Override
protected void onStart()
{
    super.onStart();
    mAuth.addAuthStateListener(firebaseAuthListener);
    FirebaseUser currentUser = mAuth.getCurrentUser();

}

@Override
protected void onStop()
{
    super.onStop();
    mAuth.removeAuthStateListener(firebaseAuthListener);
}

Answer 1

当任务失败时，它包含一个异常，其中包含有关出错原因的更多信息。您应该始终记录该异常以了解问题的原因：

public void onComplete(@NonNull Task<AuthResult> task) {
    if(!task.isSuccessful())
    {
        Log.e("Auth", "Creating user failed", task.getException()); // 
        Toast.makeText(DriverLoginActivity.this, "Error - Please check username and password requirements", Toast.LENGTH_SHORT).show();
    }
    else
        ...

将数据写入 Firebase 数据库

Writing data to Firebase database

java

android

firebase

firebase-realtime-database