activity_sign_up.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http:https://schemas.android.com/apk/res/android"
    xmlns:app="http:https://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <Button
        android:id="@+id/signUpButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="24dp"
        android:text="@string/sign_up"
        app:layout_constraintEnd_toEndOf="parent"
        android:fontFamily="@font/font"
        app:layout_constraintTop_toBottomOf="@id/passwordEditTextLayout" />

    <com.google.android.material.textfield.TextInputLayout
        android:id="@+id/emailEditTextLayout"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginHorizontal="24dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <com.google.android.material.textfield.TextInputEditText
            android:id="@+id/emailEditText"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:fontFamily="@font/font"
            android:hint="@string/email" />
    </com.google.android.material.textfield.TextInputLayout>

    <com.google.android.material.textfield.TextInputLayout
        android:id="@+id/passwordEditTextLayout"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginHorizontal="24dp"
        android:layout_marginTop="10dp"
        app:counterEnabled="true"
        app:counterMaxLength="15"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/emailEditTextLayout"
        app:passwordToggleEnabled="true">

        <com.google.android.material.textfield.TextInputEditText
            android:id="@+id/passwordEditText"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:fontFamily="@font/font"
            android:hint="@string/password"
            android:inputType="textPassword" />
    </com.google.android.material.textfield.TextInputLayout>

    <com.google.android.material.textfield.TextInputLayout
        android:id="@+id/nameEditTextLayout"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginHorizontal="24dp"
        android:layout_marginBottom="10dp"
        app:layout_constraintBottom_toTopOf="@id/emailEditTextLayout"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent">

        <com.google.android.material.textfield.TextInputEditText
            android:id="@+id/nameEditText"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:fontFamily="@font/font"
            android:hint="Name" />
    </com.google.android.material.textfield.TextInputLayout>

</androidx.constraintlayout.widget.ConstraintLayout>

    <!--    android:enabled="false" <- 를 통해서 보라색 색깔을 걷어낼 수있다-->
    <!--    -> 는 비활성화되서 색깔이 빠진거다. 입력을 아직 받지 않았다라는 것을 구현하기 위한-->