OnChildViewHolderSelectedListener
abstract class OnChildViewHolderSelectedListener
kotlin.Any | |
↳ | androidx.leanback.widget.OnChildViewHolderSelectedListener |
Interface for receiving notification when a child of this ViewGroup has been selected. There are two methods:
onChildViewHolderSelected(RecyclerView, RecyclerView.ViewHolder, int, int)
} is called when the view holder is about to be selected. The listener could change size of the view holder in this callback. onChildViewHolderSelectedAndPositioned(RecyclerView, RecyclerView.ViewHolder, * int, int)
is called when view holder has been selected and laid out in RecyclerView. Summary
Public constructors | |
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<init>() Interface for receiving notification when a child of this ViewGroup has been selected. |
Public methods | |
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open Unit |
onChildViewHolderSelected(parent: RecyclerView!, child: RecyclerView.ViewHolder!, position: Int, subposition: Int) Callback method to be invoked when a child of this ViewGroup has been selected. |
open Unit |
onChildViewHolderSelectedAndPositioned(parent: RecyclerView!, child: RecyclerView.ViewHolder!, position: Int, subposition: Int) Callback method to be invoked when a child of this ViewGroup has been selected and positioned. |
Public constructors
<init>
OnChildViewHolderSelectedListener()
Interface for receiving notification when a child of this ViewGroup has been selected. There are two methods:
onChildViewHolderSelected(RecyclerView, RecyclerView.ViewHolder, int, int)
} is called when the view holder is about to be selected. The listener could change size of the view holder in this callback. onChildViewHolderSelectedAndPositioned(RecyclerView, RecyclerView.ViewHolder, * int, int)
is called when view holder has been selected and laid out in RecyclerView. Public methods
onChildViewHolderSelected
open fun onChildViewHolderSelected(
parent: RecyclerView!,
child: RecyclerView.ViewHolder!,
position: Int,
subposition: Int
): Unit
Callback method to be invoked when a child of this ViewGroup has been selected. Listener might change the size of the child and the position of the child is not finalized. To get the final layout position of child, overide onChildViewHolderSelectedAndPositioned( * RecyclerView, RecyclerView.ViewHolder, int, int)
.
Parameters | |
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parent |
RecyclerView!: The RecyclerView where the selection happened. |
child |
RecyclerView.ViewHolder!: The ViewHolder within the RecyclerView that is selected, or null if no view is selected. |
position |
Int: The position of the view in the adapter, or NO_POSITION if no view is selected. |
subposition |
Int: The index of which ItemAlignmentDef being used, 0 if there is no ItemAlignmentDef defined for the item. |
onChildViewHolderSelectedAndPositioned
open fun onChildViewHolderSelectedAndPositioned(
parent: RecyclerView!,
child: RecyclerView.ViewHolder!,
position: Int,
subposition: Int
): Unit
Callback method to be invoked when a child of this ViewGroup has been selected and positioned.
Parameters | |
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parent |
RecyclerView!: The RecyclerView where the selection happened. |
child |
RecyclerView.ViewHolder!: The ViewHolder within the RecyclerView that is selected, or null if no view is selected. |
position |
Int: The position of the view in the adapter, or NO_POSITION if no view is selected. |
subposition |
Int: The index of which ItemAlignmentDef being used, 0 if there is no ItemAlignmentDef defined for the item. |