The FloatingActionButton can be aligned to all corners of the parent ConstraintLayout:
| FAB constraint relation | XML markup |
|---|---|
| top & start | app:layout_constraintTop_toTopOf="parent"app:layout_constraintStart_toStartOf="parent" |
| top & end | app:layout_constraintTop_toTopOf="parent"app:layout_constraintEnd_toEndOf="parent" |
| bottom & start | app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintStart_toStartOf="parent" |
| bottom & end | app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintEnd_toEndOf="parent" |
To evenly position it, use layout_margin:
android:layout_margin=”24dp”
