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EpicenterCallback

abstract class EpicenterCallback
kotlin.Any
   ↳ androidx.transition.Transition.EpicenterCallback

Class to get the epicenter of Transition. Use setEpicenterCallback(EpicenterCallback) to set the callback used to calculate the epicenter of the Transition. Override getEpicenter() to return the rectangular region in screen coordinates of the epicenter of the transition.

Summary

Public constructors

Class to get the epicenter of Transition.

Public methods

abstract Rect!
onGetEpicenter(@NonNull transition: Transition)

Implementers must override to return the epicenter of the Transition in screen coordinates.

Public constructors

<init>

EpicenterCallback()

Class to get the epicenter of Transition. Use setEpicenterCallback(EpicenterCallback) to set the callback used to calculate the epicenter of the Transition. Override getEpicenter() to return the rectangular region in screen coordinates of the epicenter of the transition.

Public methods

onGetEpicenter

abstract fun onGetEpicenter(@NonNull transition: Transition): Rect!

Implementers must override to return the epicenter of the Transition in screen coordinates. Transitions like android.transition.Explode depend upon an epicenter for the Transition. In Explode, Views move toward or away from the center of the epicenter Rect along the vector between the epicenter and the center of the View appearing and disappearing. Some Transitions, such as android.transition.Fade pay no attention to the epicenter.

Parameters
transition Transition: The transition for which the epicenter applies.
Return
Rect!: The Rect region of the epicenter of transition or null if there is no epicenter.