視圖適配器簡介

虛類AdapterView

java.lang.Object

        android.view.View

              android.view.ViewGroup

                    android.widget.AdapterView<T extends android.widget.Adapter>

Class Overview
An AdapterView is a view whose children are determined by an Adapter.

子類有：

    AbsListView

        GridView

        ListView

            ExpandableListView

    AbsSpinner

        Gallery

        Spinner

常用子類是ListView, GridView, Spinner and Gallery
AdapterView類有很多方法，但請注意以下方法：

int	getCount()
View	getEmptyView()When the current adapter is empty, the AdapterView can display a special view call the empty view.

abstract void

setSelection(int position)Sets the currently selected item.

    結束！