@@ -0,0 +1,134 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".SignInActivity">
+
+    <!--
+    text size -> sp
+    hardcoded text -> @values 폴더로 text 옮기기
+    @values 에다가 color 옮기기
+    amulator 에 action bar 제거
+    스테이더스바 색깔 변경해야함 -> @themas-->
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="70dp"
+        android:text="@string/sopthub"
+        android:textColor="@color/pink"
+        android:textSize="40sp"
+        android:textStyle="bold"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <TextView
+        android:id="@+id/textView2"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="40dp"
+        android:layout_marginTop="40dp"
+        android:text="@string/id"
+        android:textColor="@color/black"
+        android:textSize="20sp"
+        android:textStyle="bold"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/textView4" />
+
+    <EditText
+        android:id="@+id/et_id"
+        android:layout_width="0dp"
+        android:layout_height="50dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="40dp"
+        android:background="@drawable/round_blank_edge"
+        android:ems="10"
+        android:inputType="textPersonName"
+        android:paddingStart="15dp"
+        android:hint="@string/input_id"
+        android:textColor="@color/gray"
+        android:textSize="15sp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.0"
+        app:layout_constraintStart_toStartOf="@+id/textView2"
+        app:layout_constraintTop_toBottomOf="@+id/textView2" />
+
+    <TextView
+        android:id="@+id/textView3"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp"
+        android:text="@string/password"
+        android:textColor="@color/black"
+        android:textSize="20sp"
+        android:textStyle="bold"
+        app:layout_constraintStart_toStartOf="@+id/et_id"
+        app:layout_constraintTop_toBottomOf="@+id/et_id" />
+
+    <EditText
+        android:id="@+id/et_pw"
+        android:layout_width="0dp"
+        android:layout_height="50dp"
+        android:layout_marginTop="10dp"
+        android:layout_marginEnd="40dp"
+        android:background="@drawable/round_blank_edge"
+        android:ems="10"
+        android:inputType="textPassword"
+        android:minHeight="48dp"
+        android:paddingStart="15dp"
+        android:hint="@string/input_password"
+        android:textColor="@color/gray"
+        android:textSize="15sp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="@+id/textView3"
+        app:layout_constraintTop_toBottomOf="@+id/textView3" />
+
+    <Button
+        android:id="@+id/btn_login"
+        android:layout_width="0dp"
+        android:layout_height="50dp"
+        android:layout_marginBottom="120dp"
+        android:background="@drawable/round_full_edge"
+        android:text="@string/login"
+        android:textColor="@color/white"
+        android:textSize="15sp"
+        android:textStyle="bold"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="@+id/et_pw"
+        app:layout_constraintHorizontal_bias="1.0"
+        app:layout_constraintStart_toStartOf="@+id/et_pw"
+        app:layout_constraintTop_toBottomOf="@+id/et_pw" />
+
+
+    <Button
+        android:id="@+id/btn_signup"
+        android:layout_width="0dp"
+        android:layout_height="50dp"
+        android:background="@color/white"
+        android:text="@string/signup"
+        android:textColor="@color/gray"
+        android:textSize="15sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="@+id/btn_login"
+        app:layout_constraintStart_toStartOf="@+id/btn_login"
+        app:layout_constraintTop_toBottomOf="@+id/btn_login"
+        app:layout_constraintVertical_bias="0.0" />
+
+    <TextView
+        android:id="@+id/textView4"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="10dp"
+        android:text="@string/login"
+        android:textColor="@color/black"
+        android:textSize="25sp"
+        android:textStyle="bold"
+        app:layout_constraintEnd_toEndOf="@+id/textView"
+        app:layout_constraintHorizontal_bias="0.486"
+        app:layout_constraintStart_toStartOf="@+id/textView"
+        app:layout_constraintTop_toBottomOf="@+id/textView" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file

리뷰: 고정 dp를 높이나 너비값으로 줄 경우 휴대폰 기종에 따라 내용이 잘릴수도있고, 모양이 이상하게 나올 수도 있습니다~ 혹시 고정 dp를 높이 값으로 주신 특별한 이유가 있을까요~👀👀