SpinnerAdapter

Kotlin |Java

public interface SpinnerAdapter
implements Adapter

android.widget.SpinnerAdapter

Known indirect subclasses

ArrayAdapter<T>, BaseAdapter, CursorAdapter, ResourceCursorAdapter, SimpleAdapter, SimpleCursorAdapter, ThemedSpinnerAdapter

ArrayAdapter<T>	You can use this adapter to provide views for an `AdapterView`, Returns a view for each object in a collection of data objects you provide, and can be used with list-based user interface widgets such as `ListView` or `Spinner`.
BaseAdapter	Common base class of common implementation for an `Adapter` that can be used in both `ListView` (by implementing the specialized `ListAdapter` interface) and `Spinner` (by implementing the specialized `SpinnerAdapter` interface).
CursorAdapter	Adapter that exposes data from a `Cursor` to a `ListView` widget.
ResourceCursorAdapter	An easy adapter that creates views defined in an XML file.
SimpleAdapter	An easy adapter to map static data to views defined in an XML file.
SimpleCursorAdapter	An easy adapter to map columns from a cursor to TextViews or ImageViews defined in an XML file.
ThemedSpinnerAdapter	An extension of SpinnerAdapter that is capable of inflating drop-down views against a different theme than normal views.

Extended Adapter that is the bridge between a Spinner and its data. A spinner adapter allows to define two different views: one that shows the data in the spinner itself and one that shows the data in the drop down list when the spinner is pressed.

Summary

Inherited constants

From interface android.widget.Adapter

`int`	`IGNORE_ITEM_VIEW_TYPE` An item view type that causes the `AdapterView` to ignore the item view.
`int`	`NO_SELECTION`

Public methods
`abstract View`	`getDropDownView(int position, View convertView, ViewGroup parent)` Gets a `View` that displays in the drop down popup the data at the specified position in the data set.

Inherited methods

From interface


        
          android.widget.Adapter

`default CharSequence[]`	`getAutofillOptions()` Gets a string representation of the adapter data that can help `AutofillService` autofill the view backed by the adapter.
`abstract int`	`getCount()` How many items are in the data set represented by this Adapter.
`abstract Object`	`getItem(int position)` Get the data item associated with the specified position in the data set.
`abstract long`	`getItemId(int position)` Get the row id associated with the specified position in the list.
`abstract int`	`getItemViewType(int position)` Get the type of View that will be created by `getView(int, View, ViewGroup)` for the specified item.
`abstract View`	`getView(int position, View convertView, ViewGroup parent)` Get a View that displays the data at the specified position in the data set.
`abstract int`	`getViewTypeCount()` Returns the number of types of Views that will be created by `getView(int, View, ViewGroup)`.
`abstract boolean`	`hasStableIds()` Indicates whether the item ids are stable across changes to the underlying data.
`abstract boolean`	`isEmpty()`
`abstract void`	`registerDataSetObserver(DataSetObserver observer)` Register an observer that is called when changes happen to the data used by this adapter.
`abstract void`	`unregisterDataSetObserver(DataSetObserver observer)` Unregister an observer that has previously been registered with this adapter via `registerDataSetObserver(DataSetObserver)`.

Public methods

getDropDownView

Added in API level 1

public abstract View getDropDownView (int position, 
                View convertView, 
                ViewGroup parent)

Gets a View that displays in the drop down popup the data at the specified position in the data set.

Parameters
`position`	`int`: index of the item whose view we want.
`convertView`	`View`: the old view to reuse, if possible. Note: You should check that this view is non-null and of an appropriate type before using. If it is not possible to convert this view to display the correct data, this method can create a new view.
`parent`	`ViewGroup`: the parent that this view will eventually be attached to

Returns
`View`	a `View` corresponding to the data at the specified position.