PackageIndex-AndroidSDKThesearetheAndroidAPIs.Seeall

APIclasses.androidContainsresourceclassesusedbyapplicationsincludedintheplatformanddefinesapplicationpermissionsforsystemfeatures.包含平臺內置類和定義系統功能的應用權限android.accessibilityserviceTheclassesinthispackageareusedfordevelopmentofaccessibilityservicethatprovidealternativeoraugmentedfeedbacktotheuser.這個包中的類是用于開發的可訪問性服務，提供替代或增強反饋給用戶android.accountsandroid.animationTheseclassesprovidefunctionalityforthepropertyanimationsystem,whichallowsyoutoanimateobjectpropertiesofanytype.

int,

float,andhexadecimalcolorvaluesaresupportedbydefault.Youcananimateanyothertypebytellingthesystemhowtocalculatethevaluesforthatgiventypewithacustom

TypeEvaluator.Formoreinformation,seethe

Animation

guide.這些類為屬性動畫系統提供功能，它允許您對任何類型的對象屬性進行動畫繪制。int，float，和十六進制的顏色值是默認支持的。你可以通過告訴系統怎樣計算所給定的TypeEvalor類型值進行任何類型的動畫繪制。更多信息，見動畫指南android.annotationandroid.appContainshigh-levelclassesencapsulatingtheoverallAndroidapplicationmodel.包含了高層類，這些類封裝了所有的安裝程序模型。android.app.adminProvidesdeviceadministrationfeaturesatthesystemlevel,allowingyoutocreatesecurity-awareapplicationsthatareusefulinenterprisesettings,inwhichITprofessionalsrequirerichcontroloveremployeedevices.在系統層提供了管理設備功能，允許你創建安全意識的程序，這對企業的設置是有用的，這樣IT專業人員可以更多的管理職工的設備。Formoreinformation,seethe

DeviceAdministration

guide.android.app.assistandroid.app.backupContainsthebackupandrestorefunctionalityavailabletoapplications.IfauserwipesthedataontheirdeviceorupgradestoanewAndroid-powereddevice,allapplicationsthathaveenabledbackupcanrestoretheuser'spreviousdatawhentheapplicationisreinstalled.包含可供應用程序備份和恢復的功能。如果一個用戶要在他們的設備擦除數據或者升級到一個新的基于安卓的設備時，當程序重新安裝時所有的應用程序都可以備份恢復用戶的先前數據。Formoreinformation,seethe

DataBackup

guide.android.app.jobandroid.app.usageandroid.appwidgetContainsthecomponentsnecessarytocreate"appwidgets",whichuserscanembedinotherapplications(suchasthehomescreen)toquicklyaccessapplicationdataandserviceswithoutlaunchinganewactivity.包含創建“應用程序部件”所必需的組件，用戶可以在其他應用程序（如主屏幕）中嵌入到快速訪問應用程序數據和服務，而不需要啟動新的活動。Formoreinformation,seethe

AppWidgets

guide.android.bluetoothProvidesclassesthatmanageBluetoothfunctionality,suchasscanningfordevices,connectingwithdevices,andmanagingdatatransferbetweendevices.TheBluetoothAPIsupportsboth"ClassicBluetooth"andBluetoothLowEnergy.FormoreinformationaboutClassicBluetooth,seethe

Bluetooth

guide.FormoreinformationaboutBluetoothLowEnergy,seethe

BluetoothLowEnergy

(BLE)guide.提供管理藍牙功能的類，例如掃描設備、連接設備和管理設備之間的數據傳輸。藍牙接口支持“經典的藍牙”和藍牙低能量。android.bluetooth.leandroid.contentContainsclassesforaccessingandpublishingdataonadevice.包含訪問和發布設備上的數據的類。android.content.pmContainsclassesforaccessinginformationaboutanapplicationpackage,includinginformationaboutitsactivities,permissions,services,signatures,andproviders.包含用于訪問應用程序包的信息的類，包括其活動、權限、服務、簽名和提供器。android.content.resContainsclassesforaccessingapplicationresources,suchasrawassetfiles,colors,drawables,mediaorotherotherfilesinthepackage,plusimportantdeviceconfigurationdetails(orientation,inputtypes,etc.)thataffecthowtheapplicationmaybehave.包含用于訪問應用程序資源的類，列如在包中原資產文件、顏色、Drawable，媒體或其他文件包，加上重要的設備配置細節（定向、輸入類型等），這些影響著程序的表現。Formoreinformation,seethe

ApplicationResources

guide.android.databaseContainsclassestoexploredatareturnedthroughacontentprovider.包含用于瀏覽通過內容提供器返回的數據的類。android.database.sqliteContainstheSQLitedatabasemanagementclassesthatanapplicationwouldusetomanageitsownprivatedatabase.包含SQLite數據庫管理類，應用程序可以用這個類來管理自己的私人數據庫android.databindingandroid.drmProvidesclassesformanagingDRMcontentanddeterminingthecapabilitiesofDRMplugins(agents).提供的類用來管理DRM內容和確定DRM插件（代理人）的能力。android.gestureProvidesclassestocreate,recognize,loadandsavegestures.提供類來創建、識別、加載和保存手勢。android.graphicsProvideslowlevelgraphicstoolssuchascanvases,colorfilters,points,andrectanglesthatletyouhandledrawingtothescreendirectly.提供低級別的圖形工具，如畫布，彩色濾光片，點，矩形，直接讓你繪制到屏幕上。android.graphics.drawableProvidesclassestomanageavarietyofvisualelementsthatareintendedfordisplayonly,suchasbitmapsandgradients.提供的類用于管理各種各樣的打算僅為了顯示的視覺元素,如位圖和梯度。android.graphics.drawable.shapesContainsclassesfordrawinggeometricshapes.包含用于畫幾何圖形的類。android.graphics.pdfContainsclassesformanipulationofPDFcontent.包含了用于處理pdf內容的類android.hardwareProvidessupportforhardwarefeatures,suchasthecameraandothersensors.提供支持硬件功能，如攝像頭和其他傳感器。android.hardware.camera2Theandroid.hardware.camera2packageprovidesaninterfacetoindividualcameradevicesconnectedtoanAndroiddevice.android.hardware.camera2包提供了一個個人的攝像設備連接到一個Android設備接口。android.hardware.camera2.paramsandroid.hardware.displayandroid.hardware.fingerprintandroid.hardware.inputandroid.hardware.usbProvidessupporttocommunicatewithUSBhardwareperipheralsthatareconnectedtoAndroid-powereddevices.提供用來交互外部設備和連接安卓設備的支持Formoreinformation,seethe

USB

guide.android.inputmethodserviceBaseclassesforwritinginputmethods(suchassoftwarekeyboards).編寫輸入法的基本類（如軟件鍵盤）android.locationContainstheframeworkAPIclassesthatdefineAndroidlocation-basedandrelatedservices.包含了定義安卓位置和相關服務的框架類。android.mediaProvidesclassesthatmanagevariousmediainterfacesinaudioandvideo.提供在音頻和視頻中管理各種媒體接口的類。android.media.audiofxProvidesclassesthatmanageaudioeffectsimplementedinthemediaframework.提供在媒體框架中實現管理音頻效果的類。android.media.browseandroid.media.effectProvidesclassesthatallowyoutoapplyavarietyofvisualeffectstoimagesandvideos.提供允許您應用到圖像和視頻各種視覺效果的類。android.media.midiAndroidMIDIUserGuideThisdocumentdescribeshowtousetheAndroidMIDIAPIinJava.這個文檔描述了如何在java中使用安卓MIDIjectionandroid.media.sessionandroid.media.tvandroid.mtpProvidesAPIsthatletyouinteractdirectlywithconnectedcamerasandotherdevices,usingthePTP(PictureTransferProtocol)subsetoftheMTP(MediaTransferProtocol)specification.提供API，讓你直接連接攝像機和其他設備，使用MTP（媒體傳輸協議）的PTP（圖像傳輸協議）的子集規范說明書。Classesthathelpwithnetworkaccess,beyondthenormal.*APIs.用來幫助網絡訪問，超過了.http.nsd.rtpProvidesAPIsforRTP(Real-timeTransportProtocol),allowingapplicationstomanageon-demandorinteractivedatastreaming.提供API用于RTP（實時傳輸協議），允許應用程序管理立即應求的或交互式數據流。.sipProvidesaccesstoSessionInitiationProtocol(SIP)functionality,suchasmakingandansweringVOIPcallsusingSIP.提供訪問會話初始化協議（SIP）功能，如制作和回答使用SIP的VoIP呼叫。Formoreinformation,seethe

SessionInitiationProtocol

developerguide..wifiProvidesclassestomanageWi-Fifunctionalityonthedevice.提供類來管理設備上的Wi-Fi功能。.wifi.p2pProvidesclassestocreatepeer-to-peer(P2P)connectionswithWi-FiDirect.提供類來創建對等（點對點）直接連接的Wi-Fi.wifi.p2p.nsdandroid.nfcProvidesaccesstoNearFieldCommunication(NFC)functionality,allowingapplicationstoreadNDEFmessageinNFCtags.A"tag"mayactuallybeanotherdevicethatappearsasatag.提供了近場通信（NFC）功能，允許應用程序在NFC標簽讀取NDEF消息。“標簽”實際上可能是另一個出現在標簽的設備。Formoreinformation,seethe

NearFieldCommunication

guide.android.nfc.cardemulationandroid.nfc.techTheseclassesprovideaccesstoatagtechnology'sfeatures,whichvarybythetypeoftagthatisscanned.這些類提供了一個訪問標簽技術的功能，它隨掃描的標記類型的不同而不同android.openglProvidesanOpenGLESstaticinterfaceandutilities.提供一個OpenGLES靜態接口和公用程式android.osProvidesbasicoperatingsystemservices,messagepassing,andinter-processcommunicationonthedevice.在設備上提供基本操作系統服務、消息傳遞和進程間的通信在。android.os.storageContainsclassesforthesystemstorageservice,whichmanagesbinaryassetfilesystemsknownasOpaqueBinaryBlobs(OBBs).包含的類用于系統存儲服務，用來管理二進制資產系統文件被稱為不透明的二進制blob（OBBs）。android.preferenceProvidesclassesthatmanageapplicationpreferencesandimplementthepreferencesUI.提供管理應用程序的優先權和實現用戶界面的優先權的類。android.printProvidesclassesforimplementingprintsupportinapplicationsandalsocontainsallbaseclassesandabstractionsinvolvedinprinting.提供用于在應用程序中實現打印支持的類，并且還包含涉及印刷的所有基類和抽象的類android.print.pdfandroid.printserviceProvidesclassesforimplementingprintservices.提供打印服務的類。viderProvidesconvenienceclassestoaccessthecontentproviderssuppliedbyAndroid.提供方便類去訪問由安卓提供的內容提供器。android.renderscriptRenderScriptprovidessupportforhigh-performancecomputationacrossheterogeneousprocessors.Renderscript為高性能計算跨異構處理器提供支持。Formoreinformation,seethe

RenderScript

developerguide.android.saxAframeworkthatmakesiteasytowriteefficientandrobustSAXhandlers.一個框架，使得它易于編寫高效和強大的SAX處理程序。android.securityProvidesaccesstoafewfacilitiesoftheAndroidsecuritysubsystems.提供訪問安卓安全系統的幾個設施。android.security.keystoreandroid.service.carrierandroid.service.chooserandroid.service.dreamsandroid.service.mediaandroid.service.notificationandroid.service.restrictionsandroid.service.textserviceProvidesclassesthatallowyoutocreatespellcheckersinamannersimilartotheinputmethodframework(forIMEs).提供的類允許您在一個類似的輸入法框架創建的拼寫檢查器（的時代）android.service.voiceandroid.service.wallpaperandroid.speechandroid.speech.ttsandroid.support.annotationandroid.support.app.recommendationandroid.support.customtabsandroid.support.designandroid.support.design.widgetandroid.support.multidexandroid.support.percentandroid.support.v13.appSupportclassestoaccesssomeoftheandroid.apppackagefeaturesintroducedafterAPIlevel13inabackwardscompatiblefashion.支持類訪問的一些android.app包功能API級別13的向后兼容的方式引入。android.support.v14.preferenceandroid.support.v17.leanbackSupportclassesforbuildingLeanbackuserexperiences.創建leanback用戶體驗支持類。android.support.v17.leanback.appSupportclassesprovidinghighlevelLeanbackuserinterfacebuildingblocks:fragmentsandhelpers.支持類提供高水平leanback用戶界面積木：碎片和助手。android.support.v17.leanback.databaseandroid.support.v17.leanback.graphicsandroid.support.v17.leanback.systemandroid.support.v17.leanback.widgetSupportclassesprovidinglowlevelLeanbackuserinterfacebuildingblocks:widgetsandhelpers.支持類提供低水平leanback用戶界面積木：小工具和助手。android.support.v17.preferenceandroid.support.v4.accessibilityserviceSupportandroid.accessibilityserviceclassestoassistwithdevelopmentofapplicationsforandroidAPIlevel4orlater.支持android.accessibilityservice類協助開發發應用Android用于API級別4或更高版本。android.support.v4.animationandroid.support.v4.appSupportandroid.appclassestoassistwithdevelopmentofapplicationsforandroidAPIlevel4orlater.支持android.app類協助開發發應用Android用于API級別4或更高版本。android.support.v4.contentSupportandroid.contentclassestoassistwithdevelopmentofapplicationsforandroidAPIlevel4orlater.支持android.content類協助發展應用Android用于API級別4或更高版本。android.support.v4.content.pmSupportandroid.content.pmclassestoassistwithdevelopmentofapplicationsforandroidAPIlevel4orlater.支持android.content.pm類協助發展應用Android用于API級別4或更高版本。android.support.v4.content.resandroid.support.v4.databaseSupportandroid.databaseclassestoassistwithdevelopmentofapplicationsforandroidAPIlevel4orlater.支持android.database類協助發展應用AndroidAPI級別4或更高版本。android.support.v4.graphicsandroid.support.v4.graphics.drawableandroid.support.v4.hardware.displayandroid.support.v4.hardware.fingerprintandroid.support.v4.mediaandroid.support.v4.media.sessionandroid.support.v4.osSupportandroid.osclassestoassistwithdevelopmentofapplicationsforandroidAPIlevel4orlater.支持android.os類協助發展應用AndroidAPI級別4或更高版本。android.support.v4.printviderandroid.support.v4.textandroid.support.v4.utilSupportandroid.utilclassestoassistwithdevelopmentofapplicationsforandroidAPIlevel4orlater.支持android.util類協助發展應用AndroidAPI級別4或更高版本。android.support.v4.viewSupportandroid.utilclassestoassistwithdevelopmentofapplicationsforandroidAPIlevel4orlater.支持android.util班協助AndroidAPI級別4或更高版本的應用程序開發。android.support.v4.view.accessibilitySupportclassestoaccesssomeoftheandroid.view.accessibilitypackage