isolaatti-android/app/src/main/res/layout/activity_profile.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">


    <com.google.android.material.appbar.AppBarLayout
        android:id="@+id/topAppBar_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <com.google.android.material.appbar.CollapsingToolbarLayout
            android:id="@+id/collapsing_toolbar_layout"
            android:layout_width="match_parent"
            android:layout_height="410dp"
            app:layout_scrollFlags="scroll|exitUntilCollapsed|snap"
            app:contentScrim="@color/purple">

            <androidx.constraintlayout.widget.ConstraintLayout
                android:layout_width="match_parent"
                android:layout_height="350dp"
                android:orientation="vertical"
                android:layout_marginTop="56dp">

                <com.google.android.material.imageview.ShapeableImageView
                    android:id="@+id/profile_image_view"
                    android:layout_width="120dp"
                    android:layout_height="120dp"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintTop_toTopOf="parent"
                    app:shapeAppearance="@style/ShapeAppearanceOverlay.Avatar"
                    tools:srcCompat="@tools:sample/avatars" />

                <TextView
                    android:id="@+id/text_view_username"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="20dp"
                    android:layout_weight="1"
                    android:textSize="20sp"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintTop_toBottomOf="@id/profile_image_view"
                    tools:text="Erik Cavazos" />

                <TextView
                    android:id="@+id/text_view_description"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginHorizontal="20dp"
                    android:maxLines="4"
                    android:textAlignment="center"
                    app:layout_constraintTop_toBottomOf="@id/text_view_username"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintEnd_toEndOf="parent"
                    tools:text="Hi there, I am software developer!" />

                <TextView
                    android:id="@+id/text_view_following_state"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="20dp"
                    android:textAlignment="center"
                    android:textStyle="bold"
                    app:layout_constraintTop_toBottomOf="@id/text_view_description"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintEnd_toEndOf="parent"
                    tools:text="Following this profile" />

                <com.google.android.material.button.MaterialButton
                    style="?attr/materialIconButtonFilledTonalStyle"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="16dp"
                    android:layout_marginEnd="8dp"

                    app:layout_constraintEnd_toStartOf="@id/profile_options_button"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@id/text_view_following_state" />

                <com.google.android.material.button.MaterialButton
                    android:id="@+id/profile_options_button"
                    style="?attr/materialIconButtonFilledTonalStyle"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginEnd="16dp"
                    app:icon="@drawable/baseline_more_horiz_24"

                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintTop_toBottomOf="@id/text_view_following_state"/>

            </androidx.constraintlayout.widget.ConstraintLayout>

            <com.google.android.material.appbar.MaterialToolbar
                android:id="@+id/top_app_bar"
                style="@style/Theme.Isolaatti"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                app:navigationIcon="@drawable/baseline_arrow_back_24"
                app:navigationIconTint="@color/on_surface"
                app:layout_collapseMode="pin" />

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





    </com.google.android.material.appbar.AppBarLayout>
    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/feed_recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior"/>



</androidx.coordinatorlayout.widget.CoordinatorLayout>