ComunicAndroid/app/src/main/res/layout/fragment_user_access_denied.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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">

    <!-- Basic account information -->
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:layout_marginTop="16dp">

        <ImageView
            android:id="@+id/user_account_image"
            android:layout_width="@dimen/account_image_default_width"
            android:layout_height="@dimen/account_image_default_height"
            android:src="@drawable/default_account_image"
            android:contentDescription="@string/user_image_description"
            android:layout_marginEnd="10dp"/>

        <TextView
            android:id="@+id/user_account_name"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            tools:text="User account name"
            android:layout_gravity="center_vertical"/>

    </LinearLayout>



    <!-- Available actions -->
    <LinearLayout
        android:id="@+id/buttons_list"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        android:layout_marginTop="0dp">

        <Button
            android:id="@+id/button_send_request"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/button_send_friend_request"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintRight_toRightOf="parent" />

        <Button
            android:id="@+id/button_cancel_request"
            style="@style/Widget.AppCompat.Button.Colored"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/button_cancel_friend_request"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/button_send_request" />

        <Button
            android:id="@+id/button_accept_request"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/button_accept_friend_request"
            app:layout_constraintTop_toBottomOf="@+id/button_cancel_request"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintLeft_toLeftOf="parent" />

        <Button
            android:id="@+id/button_reject_request"
            style="@style/Widget.AppCompat.Button.Colored"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/button_reject_friend_request"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/button_accept_request" />
    </LinearLayout>

    <!-- Account private notice -->
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="0dp"
        android:text="@string/notice_user_page_private"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintBottom_toTopOf="@id/buttons_list"
        android:layout_marginBottom="8dp" />

</android.support.constraint.ConstraintLayout>