Mobile_development/weather/app/src/main/res/layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<layout 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">

    <data>
        <import type="android.view.View"/>
        <!-- Ссылка на наш Data Class внизу файла MainActivity.kt -->
        <variable name="weather" type="com.example.weather.WeatherInfo" />
        <variable name="isLoading" type="Boolean" />
    </data>

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:padding="16dp">

        <EditText
            android:id="@+id/etCity"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:hint="City (e.g. Paris)"
            android:text="London"
            app:layout_constraintEnd_toStartOf="@+id/btnSearch"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <Button
            android:id="@+id/btnSearch"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Search"
            android:onClick="onGetWeatherClick"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <!-- Прогресс бар, виден если isLoading == true -->
        <ProgressBar
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:visibility="@{isLoading ? View.VISIBLE : View.GONE}"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/etCity" />

        <!-- Контейнер погоды, виден если данные есть и не грузимся -->
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:gravity="center"
            android:visibility="@{!isLoading &amp;&amp; weather != null ? View.VISIBLE : View.GONE}"
            app:layout_constraintTop_toBottomOf="@+id/etCity"
            app:layout_constraintBottom_toBottomOf="parent">

            <TextView
                android:text="@{weather.temperature}"
                android:textSize="60sp"
                android:textStyle="bold"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                tools:text="20°C"/>

            <ImageView
                android:layout_width="120dp"
                android:layout_height="120dp"
                app:imageUrl="@{weather.iconUrl}"
                tools:src="@android:drawable/ic_menu_camera"/>

            <TextView
                android:text="@{weather.description}"
                android:textSize="24sp"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                tools:text="Sunny"/>

            <TextView
                android:text="@{weather.humidity}"
                android:layout_marginTop="10dp"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"/>

            <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:orientation="horizontal"
                android:gravity="center_vertical"
                android:layout_marginTop="10dp">

                <TextView
                    android:text="@{weather.windInfo}"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    tools:text="Wind: 5 m/s"/>

                <!-- Стрелка ветра -->
                <ImageView
                    android:layout_width="30dp"
                    android:layout_height="30dp"
                    android:src="@android:drawable/arrow_up_float"
                    app:tint="#555"
                    app:rotationAngle="@{weather.windRotation}"
                    android:layout_marginStart="8dp"/>
            </LinearLayout>

        </LinearLayout>

    </androidx.constraintlayout.widget.ConstraintLayout>
</layout>