KanbanCloneAndroid/app/src/main/res/layout/activity_project_detail.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/main"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".ui.ProjectDetailActivity">

    <com.google.android.material.floatingactionbutton.FloatingActionButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:clickable="true"
            app:srcCompat="@android:drawable/ic_menu_revert"
            android:id="@+id/returnActionButton"
            app:layout_constraintBottom_toBottomOf="parent"
            android:layout_marginBottom="16dp"
            android:layout_marginEnd="16dp"
            app:layout_constraintEnd_toEndOf="parent" />

    <TextView
            android:text="Project Name"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/projectTitleText"
            android:padding="12dp"
            app:layout_constraintTop_toTopOf="parent"
            android:layout_marginTop="4dp"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintHorizontal_bias="0.5"
            app:layout_constraintEnd_toEndOf="parent"
            android:textSize="24sp" />

    <TextView
            android:text="Completed: 100%"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/completedPercentageText"
            app:layout_constraintTop_toBottomOf="@+id/projectTitleText"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintHorizontal_bias="0.0"
            app:layout_constraintEnd_toEndOf="parent"
            android:paddingRight="12dp"
            android:paddingLeft="12dp"
            android:layout_marginTop="16dp"
            android:textSize="18dp" />

    <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/projectDescriptionText"
            app:layout_constraintTop_toBottomOf="@+id/projectDescriptionLabel"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintHorizontal_bias="0.0"
            app:layout_constraintEnd_toEndOf="parent"
            android:text="Project description"
            android:padding="12dp"
            android:gravity="start|top" />

    <TextView
            android:text="Project description:"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/projectDescriptionLabel"
            tools:layout_editor_absoluteX="0dp"
            app:layout_constraintTop_toBottomOf="@+id/completedPercentageText"
            android:layout_marginTop="16dp"
            android:paddingLeft="12dp"
            android:paddingRight="12dp"
            android:labelFor="@id/projectDescriptionText"
            android:textSize="18dp" />

    <LinearLayout
            android:orientation="vertical"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:layout_constraintTop_toBottomOf="@+id/projectDescriptionText"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintHorizontal_bias="0.0"
            app:layout_constraintEnd_toEndOf="parent"
            android:layout_marginTop="24dp"
            android:id="@+id/taskLinearLayout">

        <TextView
                android:text="Tasks:"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/taskListTitle"
                android:paddingLeft="12dp"
                android:textSize="18dp" />

        <Button
                android:text="Add a task..."
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/addTaskButton"
                android:layout_marginLeft="12dp"
                android:layout_marginRight="12dp" />
    </LinearLayout>

    <LinearLayout
            android:orientation="vertical"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            tools:layout_editor_absoluteX="0dp"
            android:id="@+id/collaboratorsLinearLayout"
            android:gravity="top|center_vertical"
            app:layout_constraintTop_toBottomOf="@+id/taskLinearLayout"
            android:layout_marginTop="24dp">

        <TextView
                android:text="Collaborators:"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/collaboratorListTitle"
                android:paddingLeft="12dp"
                android:textSize="18dp" />

        <androidx.recyclerview.widget.RecyclerView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/collaboratorListRecycler" />

        <Button
                android:text="Add a new collaborator..."
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/addCollaboratorButton"
                android:layout_marginLeft="12dp"
                android:layout_marginRight="12dp" />
    </LinearLayout>

</androidx.constraintlayout.widget.ConstraintLayout>