activity_log_in.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http:https://schemas.android.com/apk/res/android"
    xmlns:app="http:https://schemas.android.com/apk/res-auto"
    xmlns:tools="http:https://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="9"
        android:orientation="horizontal">

        <ImageView
            android:id="@+id/imageView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:scaleType="fitCenter"
            app:srcCompat="@drawable/app_logo" />

    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="4"
        android:orientation="vertical">

        <com.google.android.material.textfield.TextInputLayout
            android:id="@+id/emailEditTextLayout"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"
            android:layout_marginTop="12dp"
            android:layout_marginHorizontal="24dp"
            tools:ignore="NestedWeights">

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

        <com.google.android.material.textfield.TextInputLayout
            android:id="@+id/passwordEditTextLayout"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"
            android:layout_marginTop="12dp"
            android:layout_marginHorizontal="24dp"
            app:counterEnabled="true"
            app:counterMaxLength="15"
            app:passwordToggleEnabled="true">

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

    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="2"
        android:orientation="horizontal"
        android:padding="12dp">

        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="9" />

        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="11">

            <Button
                android:id="@+id/signUpButton"
                android:fontFamily="@font/font"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:text="@string/sign_up"
                android:textStyle="bold" />

            <Button
                android:id="@+id/loginButton"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:layout_marginStart="8dp"
                android:fontFamily="@font/font"
                android:layout_marginEnd="14dp"
                android:text="@string/log_in"
                android:textStyle="bold" />

        </LinearLayout>

    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="5"
        android:gravity="center"
        android:paddingBottom="30dp"
        android:orientation="vertical">

        <com.google.android.gms.common.SignInButton
            android:id="@+id/googleLoginButton"
            android:layout_width="200dp"
            android:layout_height="50dp"
            android:layout_gravity="center" />

        <com.facebook.login.widget.LoginButton
            android:id="@+id/facebookLoginButton"
            android:layout_width="200dp"
            android:layout_height="50dp"
            android:layout_gravity="center"/>

    </LinearLayout>

</LinearLayout>

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