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

Syntax

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

Must contain

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

Can contain

Specifies a beginning or ending state for one or more of the nodes. The is not permitted to have children, since the 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.