activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout 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=".MainActivity">

    <com.google.android.material.appbar.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/Theme.WeatherTest.AppBarOverlay">

        <androidx.appcompat.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/Theme.WeatherTest.PopupOverlay" />

    </com.google.android.material.appbar.AppBarLayout>

    <ProgressBar
        android:id="@+id/progress_bar"
        android:visibility="gone"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center" />

    <androidx.constraintlayout.widget.ConstraintLayout
        android:id="@+id/container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="70dp"
        android:orientation="vertical"
        android:padding="16dp">

        <TextView
            android:id="@+id/temperature_label"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:text="@string/temperature_en"
            android:textSize="20sp"
            app:layout_constraintEnd_toStartOf="@id/temperature_value"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <TextView
            android:id="@+id/temperature_value"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="8dp"
            android:text="..."
            android:textSize="20sp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toEndOf="@id/temperature_label"
            app:layout_constraintTop_toTopOf="parent" />


        <TextView
            android:id="@+id/city_label"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginTop="24dp"
            android:text="@string/city_en"
            android:textSize="20sp"
            app:layout_constraintEnd_toStartOf="@id/city_value"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/temperature_label" />

        <TextView
            android:id="@+id/city_value"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="8dp"
            android:text="..."
            android:textSize="20sp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toEndOf="@id/city_label"
            app:layout_constraintTop_toTopOf="@id/city_label" />

        <TextView
            android:id="@+id/last_updated_label"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginTop="24dp"
            android:text="@string/last_updated_en"
            android:textSize="20sp"
            app:layout_constraintEnd_toStartOf="@id/last_updated_value"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/city_label" />

        <TextView
            android:id="@+id/last_updated_value"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="8dp"
            android:text="..."
            android:textSize="20sp"
            app:layout_constraintBottom_toBottomOf="@+id/last_updated_label"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toEndOf="@id/last_updated_label"
            app:layout_constraintTop_toTopOf="@id/last_updated_label" />

        <ImageView
            android:id="@+id/weather_icon"
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:layout_marginStart="16dp"
            android:layout_marginTop="24dp"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/last_updated_label"
            tools:src="@drawable/ic_cloud" />

        <TextView
            android:id="@+id/weather_desc"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="24dp"
            android:textSize="20sp"
            app:layout_constraintBottom_toBottomOf="@+id/weather_icon"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toEndOf="@+id/weather_icon"
            app:layout_constraintTop_toTopOf="@+id/weather_icon"
            tools:text="Rain" />


    </androidx.constraintlayout.widget.ConstraintLayout>

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/update"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_marginEnd="@dimen/fab_margin"
        android:layout_marginBottom="16dp"
        app:backgroundTint="@color/white"
        app:srcCompat="@drawable/ic_refresh" />

</androidx.coordinatorlayout.widget.CoordinatorLayout>