activity_main.xml

<?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"
    android:background="@color/white"
    tools:context=".presentation.activity.MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        app:layout_constraintTop_toTopOf="parent"
        android:orientation="vertical"
        android:layout_marginStart="40dp"
        android:layout_marginEnd="40dp"
        app:layout_constraintBottom_toBottomOf="parent">

        <EditText
            android:id="@+id/textName"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:padding="12dp"
            android:importantForAutofill="no"
            android:hint="@string/name"
            android:inputType="text"
            android:textColorHint="#9E9E9E"
            android:textColor="@color/black"
            android:textSize="16sp"/>

        <EditText
            android:id="@+id/textAge"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textColor="@color/black"
            android:padding="12dp"
            android:hint="@string/age"
            android:textColorHint="#9E9E9E"
            android:importantForAutofill="no"
            android:inputType="number"
            android:textSize="14sp"/>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <Button
                android:id="@+id/buttonSave"
                android:layout_width="0dp"
                android:layout_weight="1"
                android:layout_height="wrap_content"
                android:text="@string/save_data"
                android:layout_marginTop="12dp"
                android:layout_gravity="start"
                android:textColor="@color/teal_200"
                style="?android:attr/buttonBarButtonStyle" />

            <Button
                android:id="@+id/buttonClear"
                android:layout_width="0dp"
                android:layout_weight="1"
                android:layout_height="wrap_content"
                android:text="@string/clear_data"
                android:layout_marginTop="12dp"
                android:layout_gravity="end"
                android:textColor="@color/teal_200"
                style="?android:attr/buttonBarButtonStyle" />

        </LinearLayout>

        <Button
            android:id="@+id/buttonGetData"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/get_data"
            android:textColor="@color/white"/>

    </LinearLayout>

</androidx.constraintlayout.widget.ConstraintLayout>