Android API Chinese (50) -- SpinnerAdapter

Preface

This chapter content is android. widget. SpinnerAdapter, version for Android 2.2 r1, translated from "de rod", welcome to visit his blog: http://sparkrico.javaeye.com, thank you again "de rod "! I look forward to your participation in Android Chinese API translation, contact me over140@gmail.com.

 

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Body

I. Structure

　　　　Public interface SpinnerAdapter extends Adapter

 

Direct subclass

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

Ii. Overview

　　　　

The Adapter that extends the self-Adapter is a bridge between the Spinner and the data. One Spinner Adapter allows two different views: one is to display data on the Spinner, and the other is to display data in the drop-down list when the Spinner is pressed.

　　　　

Iii. Public Methods

Public abstract ViewGetDropDownView (Int position, View convertView, ViewGroup parent)

Obtain a view that displays data from the drop-down list at a specified position.

Parameters

Index of position Project View

ConvertView if the old view may be used again. Note: before use, check that the view is not empty and the type is appropriate. It is impossible to display correct data in the conversion view. This method can create a new view.

The parent view will eventually attach the parent object

Return Value

A view of data at the specified position

 

4. Related Articles

Android Chinese API (46) -- SimpleAdapter

 

End

 

Thanks for your attention. This weekend we will start to prepare a collection, which is expected to be released next week.