android
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android.accessibilityservice
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android.accounts
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android.database.sqlite
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android.media
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ThumbnailUtils
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android.net
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android.os
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android.text
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android.util
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android.view.inputmethod
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android.widget
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dalvik.system
DexFile
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本文檔使用 PHP中文網(wǎng)手冊 發(fā)布
文字
AdapterView.OnItemSelectedListener
版本：Android 2.3 r1
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結構
繼承關系
public static interface AdapterView.OnItemSelectedListener
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類概述
定義了當選中視圖中的項目時調(diào)用的回調(diào)函數(shù)的接口。
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公有方法
public abstract void onItemSelected (AdapterView<?> parent, View view, int position, long id)
當選中視圖中的項目時執(zhí)行的回調(diào)函數(shù)。 實現(xiàn)時如果需要訪問與選中條目關聯(lián)的數(shù)據(jù)，可以調(diào)用 getItemAtPosition(position)。
參數(shù)
parent 發(fā)生選中事件的 AbsListView。
view ?? AbsListView 中被選中的視圖。
position ?? 視圖在一覽中的位置（索引）。
id 被點擊條目的行 ID。
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public abstract void onNothingSelected (AdapterView<?> parent)
當視圖中的處于選中狀態(tài)的條目全部消失時執(zhí)行的回調(diào)函數(shù)。 啟動觸控功能或適配器為空都可能導致選中條目消失。
參數(shù)
??? parent 沒有任何選中條目的 AdapterView。
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補充
?????? 本文由 Android中文在線文檔 轉(zhuǎn)換而成。
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