public class LeanbackListPreferenceDialogFragment.AdapterMulti extends RecyclerView.Adapter<LeanbackListPreferenceDialogFragment.ViewHolder> implements LeanbackListPreferenceDialogFragment.ViewHolder.OnItemClickListener
Constructor and Description |
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AdapterMulti(CharSequence[] entries,
CharSequence[] entryValues,
Set<String> initialSelections) |
Modifier and Type | Method and Description |
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int |
getItemCount()
Returns the total number of items in the data set held by the adapter.
|
void |
onBindViewHolder(LeanbackListPreferenceDialogFragment.ViewHolder holder,
int position)
Called by RecyclerView to display the data at the specified position.
|
LeanbackListPreferenceDialogFragment.ViewHolder |
onCreateViewHolder(ViewGroup parent,
int viewType)
Called when RecyclerView needs a new
RecyclerView.ViewHolder of the given type to represent
an item. |
void |
onItemClick(LeanbackListPreferenceDialogFragment.ViewHolder viewHolder) |
bindViewHolder, createViewHolder, getItemId, getItemViewType, hasObservers, hasStableIds, notifyDataSetChanged, notifyItemChanged, notifyItemChanged, notifyItemInserted, notifyItemMoved, notifyItemRangeChanged, notifyItemRangeChanged, notifyItemRangeInserted, notifyItemRangeRemoved, notifyItemRemoved, onAttachedToRecyclerView, onBindViewHolder, onDetachedFromRecyclerView, onFailedToRecycleView, onViewAttachedToWindow, onViewDetachedFromWindow, onViewRecycled, registerAdapterDataObserver, setHasStableIds, unregisterAdapterDataObserver
public AdapterMulti(CharSequence[] entries, CharSequence[] entryValues, Set<String> initialSelections)
public LeanbackListPreferenceDialogFragment.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType)
RecyclerView.Adapter
RecyclerView.ViewHolder
of the given type to represent
an item.
This new ViewHolder should be constructed with a new View that can represent the items of the given type. You can either create a new View manually or inflate it from an XML layout file.
The new ViewHolder will be used to display items of the adapter using
#onBindViewHolder(ViewHolder, int, List)
. Since it will be re-used to display
different items in the data set, it is a good idea to cache references to sub views of
the View to avoid unnecessary View.findViewById(int)
calls.
onCreateViewHolder
in class RecyclerView.Adapter<LeanbackListPreferenceDialogFragment.ViewHolder>
parent
- The ViewGroup into which the new View will be added after it is bound to
an adapter position.viewType
- The view type of the new View.RecyclerView.Adapter.getItemViewType(int)
,
#onBindViewHolder(ViewHolder, int)
public void onBindViewHolder(LeanbackListPreferenceDialogFragment.ViewHolder holder, int position)
RecyclerView.Adapter
RecyclerView.ViewHolder.itemView
to reflect the item at the given
position.
Note that unlike ListView
, RecyclerView will not call this method
again if the position of the item changes in the data set unless the item itself is
invalidated or the new position cannot be determined. For this reason, you should only
use the position
parameter while acquiring the related data item inside
this method and should not keep a copy of it. If you need the position of an item later
on (e.g. in a click listener), use RecyclerView.ViewHolder.getAdapterPosition()
which will
have the updated adapter position.
Override #onBindViewHolder(ViewHolder, int, List)
instead if Adapter can
handle efficient partial bind.
onBindViewHolder
in class RecyclerView.Adapter<LeanbackListPreferenceDialogFragment.ViewHolder>
holder
- The ViewHolder which should be updated to represent the contents of the
item at the given position in the data set.position
- The position of the item within the adapter's data set.public int getItemCount()
RecyclerView.Adapter
getItemCount
in class RecyclerView.Adapter<LeanbackListPreferenceDialogFragment.ViewHolder>
public void onItemClick(LeanbackListPreferenceDialogFragment.ViewHolder viewHolder)
onItemClick
in interface LeanbackListPreferenceDialogFragment.ViewHolder.OnItemClickListener