<MotionScene>

Root element of a motion scene file. The <MotionScene> contains one or more <Transition> elements, each of which defines the start and end state of a motion sequence and the transition between the two.

Syntax

<MotionScene xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:android="http://schemas.android.com/apk/res/android">
    ...
</MotionScene>

Must contain

<Transition>

Specifies the motion sequence to perform. If the <MotionScene> contains multiple <Transition> elements, the MotionLayout chooses the most appropriate <Transition> based on the user's interaction. For example, a <MotionScene> might have four <Transition> children, each with an <OnSwipe> for a user swipe in a different direction. When the user swipes on the screen, the MotionLayout uses the appropriate <Transition> for a swipe in that direction.

Can contain

<ConstraintSet>

Specifies a beginning or ending state for one or more of the <Transition> nodes. The <MotionLayout> is not permitted to have <ConstraintSet> children, since the <Transition> can point to XML layouts instead of pointing to constraint sets.

Attributes

defaultDuration

Default duration for all transitions in milliseconds. The default duration is used for motion sequences that don't specify their own duration. For example, if you set defaultDuration="300", all motion sequences default to 300 milliseconds in length if they don't explicitly specify their own duration.