app/src/main/res/layout/activity_calendar_export.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto">
<Button
android:id="@+id/calendarSyncActivitySyncButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:text="Export to calendar"/>
<Button
android:visibility="gone"
android:id="@+id/calendarSyncActivityCopyButton"
android:text="Copy to clipboard"
android:layout_marginEnd="10dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="@id/calendarSyncActivityCalendarIdText"
app:layout_constraintVertical_bias="0.9"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toEndOf="@id/calendarSyncActivityDeleteButton"
app:layout_constraintEnd_toEndOf="parent" />
<TextView
android:id="@+id/calendarSyncActivityCalendarIdText"
android:visibility="gone"
android:layout_margin="10dp"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Calendar id"
android:textSize="14sp"
android:gravity="center"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/calendarSyncActivityDeleteButton"
android:visibility="gone"
android:text="Delete"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="@id/calendarSyncActivityCalendarIdText"
app:layout_constraintVertical_bias="0.9"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toStartOf="@id/calendarSyncActivityCopyButton"/>
</androidx.constraintlayout.widget.ConstraintLayout>