42.7 Arc Motion

By default, a movement of view position will travel in a straight-line between the start and end points. To change the motion to an arc path, simply use the pathMotionArc attribute as follows within the start constraint, configured with either a startHorizontal or startVertical setting to define whether arc is to be concave or convex:

<ConstraintSet android:id="@+id/start">

    <Constraint

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        motion:layout_editor_absoluteX="21dp"

        android:id="@+id/button"

        motion:layout_constraintTop_toTopOf="parent"

        motion...