Firebase用戶身份驗證無法正常作業

我對此還是很陌生，所以為我犯的任何小錯誤道歉

我正在嘗試學習如何使用 Firebase 制作帶有電子郵件和密碼的登錄系統，但它似乎沒有按預期作業。檢查電子郵件是否為空、格式錯誤、密碼長度與引數不匹配的代碼也不起作用。我在運行之前仔細檢查了我的代碼，但沒有得到任何結果。

我已經將此應用連接到 Firebase 并添加 Firebase 身份驗證 SDK

單擊登錄按鈕不會按預期出現任何錯誤

登錄頁面.kt

class loginPage : AppCompatActivity() {

lateinit var binding : LoginPageBinding
lateinit var auth: FirebaseAuth
override fun onCreate(savedInstanceState: Bundle?) {
    binding = LoginPageBinding.inflate(layoutInflater)
    super.onCreate(savedInstanceState)
    window.setFlags(
        WindowManager.LayoutParams.FLAG_FULLSCREEN,
        WindowManager.LayoutParams.FLAG_FULLSCREEN);
    window.decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
    setContentView(R.layout.login_page)

    auth = FirebaseAuth.getInstance()

    login_back_button.setOnClickListener{
        val intent = Intent(this, MainActivity::class.java)
        startActivity(intent)
    }
    binding.loginButton.setOnClickListener{
        val email = binding.emailField.text.toString()
        val password = binding.passwordField.text.toString()

        if (email.isEmpty()){
            binding.emailField.error = "Email cannot be empty"
            binding.emailField.requestFocus()
            return@setOnClickListener
        }

        if (!Patterns.EMAIL_ADDRESS.matcher(email).matches()){
            binding.emailField.error = "Email not valid"
            binding.emailField.requestFocus()
            return@setOnClickListener
        }

        if (password.length > 6){
            binding.passwordField.error = "Minimal password length is 6"
            binding.passwordField.requestFocus()
            return@setOnClickListener
        }
        RegisterFirebase(email,password)
    }
}

private fun RegisterFirebase(email: String, password: String) {
    auth.createUserWithEmailAndPassword(email,password)
        .addOnCompleteListener(this){
            if (it.isSuccessful){
                Toast.makeText(this, "Register Successful", Toast.LENGTH_SHORT).show()
                val intent = Intent(this, homePage::class.java)
                startActivity(intent)
            } else {
                Toast.makeText(this, "${it.exception?.message}", Toast.LENGTH_SHORT).show()
            }
        }
}

}

主頁.kt

class homePage : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    window.setFlags(
        WindowManager.LayoutParams.FLAG_FULLSCREEN,
        WindowManager.LayoutParams.FLAG_FULLSCREEN);
    window.decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
    setContentView(R.layout.home_page)
}

}

用于輸入電子郵件的 EditText（在 login_page.xml 中）

<EditText
    android:id="@ id/email_field"
    android:layout_width="272dp"
    android:layout_height="31dp"
    android:background="@drawable/email_password_filler"
    android:hint="@string/enter_your_email"
    android:paddingStart="20sp"
    android:paddingTop="5sp"
    android:paddingBottom="5sp"
    android:textSize="13sp"
    android:maxLines="1"
    android:lines="1"
    android:singleLine="true"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.504"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintVertical_bias="0.126"
    tools:ignore="Autofill,RtlSymmetry,TextFields" />

用于輸入密碼（在 login_page.xml 中）

<EditText
    android:id="@ id/password_field"
    android:layout_width="272dp"
    android:layout_height="31dp"
    android:background="@drawable/email_password_filler"
    android:hint="@string/enter_your_password"
    android:paddingStart="20sp"
    android:paddingTop="5sp"
    android:paddingBottom="5sp"
    android:textSize="13sp"
    android:maxLines="1"
    android:lines="1"
    android:singleLine="true"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.504"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintVertical_bias="0.208"
    tools:ignore="Autofill,RtlSymmetry,TextFields" />

uj5u.com熱心網友回復：

密碼應始終大于或等于 6，在您的情況下，情況正好相反。像這樣修復它：

if (password.length < 6) {
    binding.passwordField.error = "Minimal password length is 6"
    binding.passwordField.requestFocus()
    return@setOnClickListener
}

login_back_button缺少binding參考以及如果它是一個后退按鈕，那么您應該只使用finish回傳到以前的活動而不是再次創建新實體。像這樣：

binding.loginBackButton.setOnClickListener { finish() }

更新：

問題是您正在使用binding但未將其傳遞給setContentView. 像這樣修復它：

setContentView(binding.root)

標籤：安卓 火力基地 firebase 身份验证

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