[패스트캠퍼스 챌린지 26일차] Android Tinder 앱 UI 및 로그인 기능

기본 UI와 Firebase를 이용한 이메일 로그인 기능을 구현하였습니다.

<EditText
        android:id="@+id/emailEditText"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:layout_width="0dp"
        android:layout_height="wrap_content"/>
    <EditText
        android:id="@+id/passwordEditText"
        app:layout_constraintStart_toStartOf="parent"
        android:inputType="textPassword"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/emailEditText"
        android:layout_width="0dp"
        android:layout_height="wrap_content"/>

    <Button
        android:id="@+id/loginButton"
        android:text="로그인"
        app:layout_constraintTop_toBottomOf="@+id/passwordEditText"
        app:layout_constraintEnd_toEndOf="parent"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

    <Button
        android:id="@+id/signUpButton"
        android:text="회원가입"
        android:layout_marginEnd="4dp"
        app:layout_constraintTop_toBottomOf="@+id/passwordEditText"
        app:layout_constraintEnd_toStartOf="@+id/loginButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

private fun initEmailAndPasswordEditText() {
        val emailEditText =findViewById<EditText>(R.id.emailEditText)
        val passwordEditText = findViewById<EditText>(R.id.passwordEditText)
        val loginButton = findViewById<Button>(R.id.loginButton)
        val signUpButton = findViewById<Button>(R.id.signUpButton)

        emailEditText.addTextChangedListener {
            val enable = emailEditText.text.isNotEmpty() && passwordEditText.text.isNotEmpty()
            loginButton.isEnabled = enable
            signUpButton.isEnabled = enable
        }
    }

    private fun initLoginButton() {
        val loginButton = findViewById<Button>(R.id.loginButton)
        loginButton.setOnClickListener {
            val email = getInputEmail()
            val password = getInputPassword()

            auth.signInWithEmailAndPassword(email, password)
                .addOnCompleteListener(this) { task ->
                    if(task.isSuccessful){
                        finish()
                    }else{
                        Toast.makeText(this, "로그인에 실패했습니다. 이메일 또는 비밀번호를 확인해주세요.",Toast.LENGTH_SHORT).show()
                    }
                }
        }
    }
    private fun initSignUpButton() {
        val signUpButton = findViewById<Button>(R.id.signUpButton)
        signUpButton.setOnClickListener {
            val email = getInputEmail()
            val password = getInputPassword()

            auth.createUserWithEmailAndPassword(email, password)
                .addOnCompleteListener(this) { task->
                    if(task.isSuccessful){
                        Toast.makeText(this,"회원가입에 성공했습니다.", Toast.LENGTH_SHORT).show()
                    }else{
                        Toast.makeText(this,"이미 가입한 이메일이거나, 회원가입에 실패했습니다.", Toast.LENGTH_SHORT).show()
                    }
                }
        }
    }

    private fun getInputEmail(): String{
        return findViewById<EditText>(R.id.emailEditText).text.toString()
    }
    private fun getInputPassword(): String{
        return findViewById<EditText>(R.id.passwordEditText).text.toString()
    }

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