SpinnerAdapter

Kotlin |Java

interface SpinnerAdapter : Adapter

android.widget.SpinnerAdapter

Known Direct Subclasses

BaseAdapter, ThemedSpinnerAdapter

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).
ThemedSpinnerAdapter	An extension of SpinnerAdapter that is capable of inflating drop-down views against a different theme than normal views.

Known Indirect Subclasses

ArrayAdapter, ArrayAdapter, CursorAdapter, CursorAdapter, ResourceCursorAdapter, ResourceCursorAdapter, SimpleAdapter, SimpleAdapter, SimpleCursorAdapter SimpleCursorAdapter

ArrayAdapter	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`.
ArrayAdapter	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`.
CursorAdapter	Adapter that exposes data from a `Cursor` to a `ListView` widget.
CursorAdapter	Adapter that exposes data from a `Cursor` to a `ListView` widget.
ResourceCursorAdapter	An easy adapter that creates views defined in an XML file.
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.
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.
SimpleCursorAdapter	An easy adapter to map columns from a cursor to TextViews or ImageViews defined in an XML file.

Extended Adapter that is the bridge between a android.widget.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 class Adapter

Int

IGNORE_ITEM_VIEW_TYPE

An item view type that causes the AdapterView to ignore the item view. For example, this can be used if the client does not want a particular view to be given for conversion in getView(int,android.view.View,android.view.ViewGroup).

Int

NO_SELECTION

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

Inherited functions

From class Adapter

`Array<CharSequence!>?`	`getAutofillOptions()` Gets a string representation of the adapter data that can help `android.service.autofill.AutofillService` autofill the view backed by the adapter. It should only be set (i.e., non-`null` if the values do not represent PII (Personally Identifiable Information - sensitive data such as email addresses, credit card numbers, passwords, etc...). For example, it's ok to return a list of month names, but not a list of usernames. A good rule of thumb is that if the adapter data comes from static resources, such data is not PII - see `android.view.ViewStructure#setDataIsSensitive(boolean)` for more info.
`Int`	`getCount()` How many items are in the data set represented by this Adapter.
`Any!`	`getItem(position: Int)` Get the data item associated with the specified position in the data set.
`Long`	`getItemId(position: Int)` Get the row id associated with the specified position in the list.
`Int`	`getItemViewType(position: Int)` Get the type of View that will be created by `getView` for the specified item.
`View!`	`getView(position: Int, convertView: View!, parent: ViewGroup!)` Get a View that displays the data at the specified position in the data set. You can either create a View manually or inflate it from an XML layout file. When the View is inflated, the parent View (GridView, ListView...) will apply default layout parameters unless you use `android.view.LayoutInflater#inflate(int, android.view.ViewGroup, boolean)` to specify a root view and to prevent attachment to the root.
`Int`	`getViewTypeCount()` Returns the number of types of Views that will be created by `getView`. Each type represents a set of views that can be converted in `getView`. If the adapter always returns the same type of View for all items, this method should return 1. This method will only be called when the adapter is set on the `AdapterView`.
`Boolean`	`hasStableIds()` Indicates whether the item ids are stable across changes to the underlying data.
`Boolean`	`isEmpty()`
`Unit`	`registerDataSetObserver(observer: DataSetObserver!)` Register an observer that is called when changes happen to the data used by this adapter.
`Unit`	`unregisterDataSetObserver(observer: DataSetObserver!)` Unregister an observer that has previously been registered with this adapter via `registerDataSetObserver`.

Public methods

getDropDownView

Added in API level 1

abstract fun getDropDownView(
    position: Int, 
    convertView: View!, 
    parent: ViewGroup!
): View!

Gets a android.view.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

Return
`View!`	a `android.view.View` corresponding to the data at the specified position.