RecyclerView using SectionedRecyclerViewAdapter only shows first header - kotlin

Question

I'm using SectionedRecyclerViewAdapter from luizgrp/SectionedRecyclerViewAdapter as adapter for my RecyclerView. But only the first header is shown. No content is shown and neither is the second header. Any clue about what I'm doing wrong?
My RoundSection.kt looks as below
class RoundSection(private val title: String, private val items: List<Pair<RoundExercise, Exercise>>, sectionParameters: SectionParameters) : Section(sectionParameters) {
override fun getContentItemsTotal(): Int = items.size
override fun getItemViewHolder(view: View): RecyclerView.ViewHolder = ItemViewHolder(view)
override fun onBindItemViewHolder(holder: RecyclerView.ViewHolder?, position: Int) {
val itemViewHolder = holder as ItemViewHolder
itemViewHolder.exerciseName.text = items[position].second.name
}
override fun getHeaderViewHolder(view: View): RecyclerView.ViewHolder = HeaderViewHolder(view)
override fun onBindHeaderViewHolder(holder: RecyclerView.ViewHolder) {
val headerViewHolder = holder as HeaderViewHolder
headerViewHolder.roundHeader.text = title
}
internal class ItemViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
val exerciseName: TextView = itemView.exerciseName
}
internal class HeaderViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
val roundHeader: TextView = itemView.roundHeader
}
}
My fragment_workout_details.xml looks as below
class WorkoutDetailsFragment : Fragment(R.layout.fragment_workout_details) {
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
val sectionParameters = SectionParameters.builder()
.itemResourceId(R.layout.round_exercise_item)
.headerResourceId(R.layout.round_header)
.build()
val sectionAdapter = SectionedRecyclerViewAdapter()
roundRecyclerView.layoutManager = LinearLayoutManager(context)
roundRecyclerView.adapter = sectionAdapter
val exercise = Exercise("exercise name", "exercise desc", 0, 1)
val roundExercise = RoundExercise(0, 1, 5, 0, 0, 0)
sectionAdapter.addSection(RoundSection("Round 1", listOf(roundExercise to exercise), sectionParameters))
val exercise1 = Exercise("exercise name1", "exercise desc1", 0, 2)
val roundExercise1 = RoundExercise(0, 2, 5, 0, 0, 0)
sectionAdapter.addSection(RoundSection("Round 2", listOf(roundExercise1 to exercise1), sectionParameters))
}
}
My fragment_workout_details.xml looks as below
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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"
android:padding="16dp"
tools:context=".ui.WorkoutDetailsFragment">
<TextView
android:id="#+id/workoutName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/workout_name_workout_details_fragment"
android:textAppearance="#style/TextAppearance.AppCompat.Large" />
<TextView
android:id="#+id/workoutDescription"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/workout_description_workout_details_fragment"
app:layout_constraintTop_toBottomOf="#+id/workoutName" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/roundRecyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="#+id/workoutDescription" />
</androidx.constraintlayout.widget.ConstraintLayout>
My round_header.xml looks as below
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="8dp">
<TextView
android:id="#+id/roundHeader"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentStart="true"
android:text="Row Header Name"
android:textAppearance="#style/TextAppearance.AppCompat.Large" />
</RelativeLayout>
My round_exercise_item.xml looks as below
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="8dp">
<TextView
android:id="#+id/exerciseName"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentStart="true"
android:text="Exercise Name"
android:textAppearance="#style/TextAppearance.AppCompat.Large" />
</RelativeLayout>

Answer 1

Setting android:layout_height="match_parent" on both round_header.xml and round_exercise_item.xml solved the problem.