飛信symbian客戶端接口規(guī)范

1、Chaptter 119: MMobille ApppliccatioonsObjjectiives DDefinne a mobiile aappliicatiion. UUnderrstannd coomponnentss fouund iin a mobiile aappliicatiion. LLearnn thee keyy sceenariios wwheree mobbile appllicattionss wouuld bbe ussed. LLearnn thee dessign conssiderratioons ffor mmobille apppliccatioons.

2、 IIdenttify speccificc sceenariios ffor mmobille apppliccatioons, suchh as deplloymeent, poweer ussage, andd synnchroonizaationn. LLearnn thee keyy pattternns annd teechnoologyy connsideeratiions for desiigninng moobilee appplicaationns.目標定義個個移動應。理解建建立個移動動應素。學習移移動應重戶場景。學習移移動應設計計考慮因素素。鑒別特特定移動應應場景，如如部

3、署，電電量同步等等。學習移移動應關(guān)鍵鍵模型技術(shù)術(shù)因素。OveervieewA mmobille apppliccatioon wiill nnormaally be sstrucctureed ass a mmultii-layyeredd appplicaationn connsistting of uuser expeeriennce, busiinesss, annd daata llayerrs. WWhen deveelopiing aa mobbile appllicattion, youu mayy chooose to ddevellop aa thiin Weeb-baase

4、d clieent oor a richh cliient. If you are builldingg a rrich clieent, the busiinesss andd datta seervicces llayerrs arre liikelyy to be llocatted oon thhe deevicee itsself. If you are builldingg a tthin clieent, the busiinesss andd datta laayerss willl bee loccatedd on the servver. Figuure 11 illlus

5、trratess commmon richh cliient mobiile aappliicatiion aarchiitectture withh commponeents grouuped by aareass of conccern.概述通常，移移動應由個層應結(jié)構(gòu)，包包括戶體驗驗、業(yè)務數(shù)數(shù)據(jù)等。移移動應時，以選擇擇做個基于于網(wǎng)絡瘦客客戶端或個個富客戶端端。如果選選擇富客戶戶端，那么么業(yè)務數(shù)據(jù)據(jù)服務層般般位于設備備本身。如如果選擇瘦瘦客戶端，那那么業(yè)務數(shù)數(shù)據(jù)層則位位于服務器器端。圖1，根據(jù)組組成素關(guān)系，描描述個富客客戶端移動動應架構(gòu)。圖1：常富客戶戶端應架構(gòu)構(gòu)Dessign Conssi

6、derratioonsThee folllowiing ddesiggn guuidelliness proovidee infformaationn aboout ddiffeerentt asppectss youu shoould conssiderr wheen deesignning a moobilee appplicaationn. Foolloww theese gguideelinees too enssure thatt youur apppliccatioon meeets yourr reqquireementts annd peerforrms eefficcient

7、tly iin sccenarrios commmon tto moobilee appplicaationns:設計考考慮當設計計個移動應應時，面設計方針針提供應該考考慮不同方方面信息。遵循這些些指能夠確確保應能夠滿足足需求，同同時，于般移動應能夠夠有效。 DDecidde iff youu willl buuild a riich ccliennt, aa thiin Weeb cllientt, orr ricch Innternnet aappliicatiion (RIA). Iff youur apppliccatioon reequirres llocall proocesssi

8、ng and mustt worrk inn an occaasionnallyy connnectted sscenaario, connsideer deesignning a riich ccliennt. KKeep in mmind thatt a rrich clieent aappliicatiion wwill conssume moree devvice resoourcees annd wiill bbe moore ccompllex tto innstalll annd maaintaain. If yyour appllicattion can depeend oon

9、 seerverr proocesssing and willl alwways be ffullyy connnectted, conssiderr dessigniing aa thiin cllientt. Iff youur apppliccatioon reequirres aa ricch usser iinterrfacee (UII), oonly limiited acceess tto loocal resoourcees, aand mmust be pportaable to ootherr plaatforrms, desiign aan RIIA cllientt.

10、決定建建立個富客客戶端、基基于網(wǎng)絡瘦瘦客戶端或或富Inteernett應(RIAA)。如果果應需本地處理理，偶爾聯(lián)聯(lián)網(wǎng)必須工工作，那么么就考慮設設計成個富富客戶端。記住，個個富客戶端端應消耗更更設備資源源，按照維維護工作比比較責。如如果應能夠依靠靠服務器處處理，并且且直保持聯(lián)聯(lián)網(wǎng)，那么么就考慮設設計瘦客戶戶端。如果果應需豐富戶體驗驗，使本地地資源受限限，并且必必須能夠移移植其，那么就就設計成RRIA客戶戶端。 DDeterrminee thee devvice typees yoou wiill ssuppoort. Whenn chooosinng whhich deviice ttypes

11、s to suppport, connsideer sccreenn sizze, rresollutioon (DDPI), CPUU perrformmancee chaaractterissticss, meemoryy andd stooragee spaace, and deveelopmment tooll envvironnmentt avaailabbilitty. IIn addditiion, facttor iin usser rrequiiremeents and orgaanizaationnal cconsttrainnts.決定支支持設備類類型。選擇擇支持設備備類

12、型時，考慮屏幕、分辨率（DPI）、CPU特性、主存、擴展存儲工具環(huán)境。另，還考慮戶需求組織限制因素。 DDesiggn thhe apppliccatioon wiith ooccassionaally connnecteed liimiteed-baandwiidth scennarioos inn minnd. MMost mobiile aappliicatiions mustt worrk whhen aa nettworkk connnecttion is iinterrmitttent or nnot aavaillablee. Itt is vitaal inn thiis si

13、ituattion to ddesiggn yoour ccachiing, statte maanageementt, annd daata aaccesss meechannismss witth inntermmitteent nnetwoork cconneectivvity in mmind. Battch ccommuunicaationns foor tiimes of cconneectivvity. Chooose harddwaree andd sofftwarre prrotoccols baseed onn speeed, poweer coonsummptioon,

14、aand “chatttineess,” andd nott jusst onn easse off proogrammmingg設計偶偶爾聯(lián)網(wǎng)，并并且?guī)捠苁芟迲?shù)移動應應必須間歇性性地連接網(wǎng)網(wǎng)絡或網(wǎng)絡絡不都能工工作。這種種間歇性網(wǎng)網(wǎng)絡連接，設設計存、狀狀態(tài)管理數(shù)數(shù)據(jù)獲機制制重。有網(wǎng)絡連連接，就進進行通信批批處理。基基于速度、功耗“繁瑣”程度選擇硬硬軟協(xié)議，而而并不從編編程難易程程度做。 DDesiggn a UI aapproopriaate ffor mmobille deevicees, ttakinng innto aaccouunt pplatfform consstraiint

15、s. Mobbile deviices requuire a siimpleer arrchittectuure, simppler UI, and otheer sppeciffic ddesiggn deecisiions in oorderr to workk witthin the consstraiints impoosed by tthe ddevicce haardwaare. Keepp theese cconsttrainnts iin miind aand ddesiggn sppecifficallly ffor tthe ddevicce innsteaad off t

16、ryying to rreusee thee arcchiteecturre orr UI fromm a ddeskttop oor Weeb apppliccatioon. TThe mmain consstraiints are memoory, batttery lifee, abbilitty too adaapt tto diifferrencee scrreen sizees annd orrienttatioons, secuurityy, annd neetworrk baandwiidth.考慮約約束，設計計適合移動動設備UII。移動設設備需簡單單架構(gòu)、簡簡潔UI其特定設計

17、滿足設設備硬所帶帶資源受限限。牢記這這些限制設設計適合設設備程序，而而非嘗試著著重桌面或或網(wǎng)絡應架構(gòu)構(gòu)。最主限限制包括存存容量、電電池壽命、適應不同同屏幕分辨辨率能力、安全網(wǎng)絡絡帶寬。 DDesiggn a layeered archhiteccturee appproprriatee forr mobbile deviices thatt impprovees reeuse and mainntainnabillity. Deppendiing oon thhe apppliccatioon tyype, multtiplee layyers may be llocatted oon thh

18、e deevicee itsself. Usee thee connceptt of layeers tto maaximiize sseparratioon off conncernns, aand tto immprovve reeuse and mainntainnabillity for yourr mobbile appllicattion. Howweverr, aiim too achhievee thee smaallesst foootprrint on tthe ddevicce byy simmpliffyingg youur deesignn commpareed to

19、o a ddeskttop oor Weeb apppliccatioon.設計分分層架構(gòu)，適適應移動設設備，提重重性維護性?；趹愵愋?，不同同層位于設設備本身部部。利層概念最化地分離離考慮因素素，并且提提移動應重性維護性。但，桌面或網(wǎng)絡絡應相比，通通過簡化設設計實現(xiàn)這這個最覆蓋蓋區(qū)。 DDesiggn coonsidderinng deevicee ressourcce coonstrraintts suuch aas baatterry liife, memoory ssize, andd proocesssor sspeedd. Evvery desiign ddecission sh

20、ouuld ttake intoo acccountt thee limmitedd CPUU, meemoryy, sttoragge caapaciity, and batttery lifee of mobiile ddevicces. Batttery lifee is usuaally the mostt limmitinng faactorr in mobiile ddevicces. Backklighhtingg, reeadinng annd wrritinng too memmory, wirrelesss coonnecctionns, sspeciializzed hh

21、ardwware, andd proocesssor sspeedd alll havve ann imppact on tthe ooveraall ppowerr usaage. Whenn thee amoount of mmemorry avvailaable is llow, the Micrrosofft Winndowss Mobbile opeeratiing ssysteem maay assk yoour aappliicatiion tto shhut ddown or ssacriificee cacched dataa, sllowinng prrograam exx

22、ecuttion. Opttimizze yoour aappliicatiion tto miinimiize iits ppowerr andd memmory foottprinnt whhile conssiderring perfformaance duriing tthis proccess.考慮設設備資源受受限因素，如如電池壽命命、存處理器速速度等。每每個設計應應該考慮移移動設備CCPU受限限、存/存儲容量量電池壽命命。般說，電池池壽命移動動設備最受受限因素。背景燈、讀存、無無線連接、特殊硬處理器速速度，所有有這些總體體功耗產(chǎn)生生重影響。存少，Micrrosofft Winndo

23、wss Mobbile操作系統(tǒng)統(tǒng)提醒關(guān)閉應應程序或丟失失緩存數(shù)據(jù)據(jù)、降程序序執(zhí)行速度度等等?？伎紤]性能表表現(xiàn)，優(yōu)化化應程序，功耗耗存使降最。Mobbile Clieent FFrameeTheere aare sseverral ccommoon isssuess thaat yoou muust cconsiider as yyour deveelop yourr dessign. Theese iissuees caan bee cattegorrizedd intto sppeciffic aareass of the desiign. The folllowinng taable li

24、stts thhe coommonn isssues for eachh cattegorry whhere misttakess aree mosst offten madee.移動客客戶端框架架應程序序時候，有有些問題必須須考慮。這些些問題以分分成不同類類型。面表格列出出通常容易易出問題。表1 移動客戶戶端框架類型主問題認證授權(quán)l(xiāng)偶爾連連接網(wǎng)絡，未未使認證。 l偶偶爾連接網(wǎng)網(wǎng)絡，未使使授權(quán)。lVVPN網(wǎng)絡絡，未使認證證授權(quán)。l使使空接口同步步時，未使使認證。l主主機同步時時，未使認認證。l有有連接，比比如空接口口、插座、藍牙SDD卡，未使使認證。l不不能辨別不不同設備間間安全模式式差異。緩

25、存l資源受受限設備緩存不不必數(shù)據(jù)。 l間間歇性網(wǎng)絡絡連接，依依靠能無法法獲得緩存存數(shù)據(jù)。l選選擇不合理理緩存地址址數(shù)據(jù)格式式l使使未加密格式式存放敏感感數(shù)據(jù)l未未使合適緩存技技術(shù)通信l未能保保護空接口口敏感數(shù)據(jù)據(jù)。 l未未網(wǎng)絡服務務通信進行行加密。l未未VPN通信信進行加密密。l帶帶寬受限網(wǎng)網(wǎng)絡連接，未未通信進行行加密。l未未受限帶寬寬連接進行行有效管理理。l未未個網(wǎng)絡服服務進行有有效管理。l未未考慮間歇歇性網(wǎng)絡連連接工作。l未未考慮連接接成本，并并讓戶管理連接接。l使使電池，未考考慮最化功功耗。l未未使合適通信協(xié)協(xié)議。配置管理l設備重重啟，未恢恢復配置狀狀態(tài)。 l未未考慮通過過空接口進進行配

26、置管管理同步。l未未考慮通過過主機進行行配置管理理同步。l采采不合適數(shù)據(jù)據(jù)格式存儲儲配置信息息。l未未保護敏感感配置信息息。l未未考慮不同同設備制造造商于重載載配置參數(shù)數(shù)差異。數(shù)據(jù)獲l未考慮慮間歇性網(wǎng)網(wǎng)絡連接數(shù)數(shù)據(jù)獲機制制。 l未未考慮數(shù)據(jù)據(jù)庫接入性性能。lddatasset進行行查詢。l未未考慮合適適復制技術(shù)。l未未考慮使設設備數(shù)據(jù)庫庫服務，如如Micrrosofft SQQL Seerverr Commpactt Ediitionn。調(diào)試l選擇支支持種設備備時候，未未考慮調(diào)試試成本。 l設設計時，未未考慮調(diào)試試，例如，使使模擬器而而不真實設設備。l未未考慮所有有連接調(diào)試試。設備l未考慮慮設

27、備差異異性，如屏屏幕CPUU能力。 l給給戶展示不不友好出信息。l未未保護敏感感信息。l未未考慮設備備處理能力力。異常管理l拋出異異常以，未未恢復應程程序狀態(tài)。 l暴暴露敏感信信息給戶。l未未記錄詳盡盡異常信息息。l使使異?？刂茟獞鞒?。日志l未考慮慮遠端日志志記錄，而而只考慮設設備。 l未未考慮獲設備日志志。l未未考慮記錄錄日志時，資資源受限。l未未保護日志志文敏感信信息。移植l未重現(xiàn)現(xiàn)存富客戶戶端UI適合設設備。 l未未探究移植植工具。同步l通信過過程，未同步進進行安全保保護。 l未未管理空接接口同步，而而不插座同同步。l未未管理同步步斷。l未未處理同步步?jīng)_突。l未未考慮合適適合并復制制。

28、戶界面l未考慮慮受限UII因素。 l未未考慮單窗窗口環(huán)境。l未未考慮單戶戶程序運行行。l未未設計觸摸摸屏或觸筆筆UI。l未未包含不同同屏幕方向向支持。l未未管理設備備重啟恢復復。l桌桌面應相比比，未考慮慮受限APPIUI控。驗證l主機通通信過程，未未輸入數(shù)據(jù)進進行驗證。 l空空接口通信信過程，未未輸入數(shù)據(jù)進進行驗證。l未未保護硬資資源，例如如攝像頭電電話始化。l設設計時，未未考慮受限限資源性能。本文翻譯“Authhentiicatiion aand AAuthoorizaationn”、“Cachhing”、“Commmuniccatioon”“Conffigurratioon Maanage

29、ementt”部分。Autthentticattion and AuthhorizzatioonDessigniing aan efffecttive authhentiicatiion aand aauthoorizaationn strrateggy iss impportaant ffor tthe ssecurrity and reliiabillity of yyour appllicattion. Weaak auuthennticaationn cann leaave yyour appllicattion vulnnerabble tto unnauthhorizzed uus

30、e. Mobiile ddevicces aare uusuallly ddesiggned to bbe siinglee-useer deevicees annd noormallly llack basiic usser pprofiile aand ssecurrity tracckingg beyyond justt a ssimplle paasswoord. Otheer coommonn dessktopp mecchaniisms are alsoo likkely to bbe miissinng. TThe ddiscooveraabiliity oof moobilee

31、 devvicess oveer prrotoccols suchh as Blueetootth caan prresennt ussers withh uneexpeccted scennarioos. MMobille apppliccatioons ccan aalso be eespecciallly chhalleenginng duue too connnecttivitty innterrruptiions. Connsideer alll poossibble cconneectivvity scennarioos, wwhethher oover-the-air or hh

32、ard-wireed.認證授授權(quán)于應程程序安全性性靠性說，設設計個有效效認證授權(quán)策策略非常重重。相說較弱弱認證以讓您您應程序容易易受未經(jīng)授授權(quán)使。移動設設備般設計單個戶使，除個簡單單密碼以，經(jīng)經(jīng)常缺少基基本戶配置置文安全追追蹤策略。同時，移移動設備，其其通桌面安全全機制容易易被忽略。通過諸如如藍牙等協(xié)協(xié)議，移動動設備容易易被，這就就給戶帶意料不不。連接斷能性給移動動應帶極挑戰(zhàn)。無無論通過無無線或有線線，們必須須考慮所有有能連接場景景。Consiider the folllowinng guuidelliness wheen deesignning authhentiicatiion aand

33、aauthoorizaationn: DDesiggn auuthennticaationn forr oveer-thhe-aiir, ccradlled ssynchhroniizatiion, Blueetootth diiscovvery, andd loccal SSD caard sscenaarioss. CConsiider thatt difffereent ddevicces mmightt havve vaariattionss in theiir prrograamminng seecuriity mmodells, wwhichh cann afffect authh

34、orizzatioon too acccess resoourcees DDo noot asssumee thaat seecuriity mmechaanismms avvailaable on llargeer pllatfoorms willl be avaiilablle onn a mmobille pllatfoorm, evenn if you are usinng thhe saame ttoolss. Foor exxamplle, aaccesss coontrool liists(ACLss) arre noot avvailaable in WWindoows MMo

35、bille, aand cconseequenntly therre iss no operratinng syystemmlevvel ffile secuurityy. EEnsurre thhat yyou rrequiire aautheenticcatioon foor acccesss by Blueetootth deevicees. IIdenttify trusst booundaariess witthin yourr mobbile appllicattion layeers; for insttancee, beetweeen thhe cllientt andd th

36、ee serrver or tthe sserveer annd thhe daatabaase. Thiss willl heelp yyou tto deetermmine wherre annd hoow too autthentticatte.設計認認證授權(quán)時時，考慮以以幾點指方針針：無線線連接、插插座同步、藍牙本機機SD卡設計計認證。編程程安全模式式，不同設備備能有所差差異，這就就影響資源源獲認證。即使使相相同工具，不認安全機制制就以移動。例如如，Winndowss Mobbile，訪訪問控制表表不，因此就就沒有操作作系統(tǒng)級文文安全機制制。通過過藍牙接入入設備時，確確保使認證證機制。

37、明確確您移動應應層信任界限限。例如，客戶端服務器間，還服務器數(shù)據(jù)庫間。這有助于確定何處以何種方式進行認證。CachiingUsee cacchingg to imprrove the perfformaance and respponsiiveneess oof yoour aappliicatiion, and to ssuppoort ooperaationn wheen thhere is nno neetworrk coonnecctionn. Usse caachinng too opttimizze reefereence dataa loookupss, too avooid n

38、netwoork rroundd triips, and to aavoidd unnnecesssariily ddupliicateed prrocesssingg. Whhen ddecidding whatt datta too cacche, conssiderr thee limmitedd ressourcces oof thhe deevicee; yoou wiill hhave lesss stooragee spaace aavaillablee thaan onn a PPC.緩存利緩存存提應程序性能響應，并并且沒有網(wǎng)網(wǎng)絡連接，支支持程序操操作。使緩緩存優(yōu)化參參考數(shù)據(jù)查

39、查詢，避免免網(wǎng)絡往返返時延影響響，減少不不必重復操操作。決定定緩存哪些些數(shù)據(jù)時，必必須考慮設設備有限資資源；PCC機相比，移移動設備具具有更少存存儲空間。Connsideer thhe foollowwing guiddelinnes wwhen desiigninng caachinng: IIdenttify yourr perrformmancee objjectiives. Forr exaamplee, deetermmine yourr minnimumm ressponsse tiime aand bbatteery llife. Tesst thhe peerforrmancc

40、e off thee speecifiic deevicees yoou wiill bbe ussing. Mosst moobilee devvicess usee onlly fllash memoory, whicch iss likkely to bbe sllowerr thaan thhe meemoryy useed inn dessktopp macchinees. CCachee staatic dataa thaat iss useeful, andd avooid ccachiing vvolattile dataa. CConsiider cachhing the d

41、ataa thaat thhe apppliccatioon iss mosst liikelyy to needd in an ooccassionaally connnecteed sccenarrio. CChoosse thhe appproppriatte caache locaationn, suuch aas onn thee devvice, at the mobiile ggatewway, or iin thhe daatabaase sserveer. DDesiggn foor miinimuum meemoryy foootpriint. Cachhe onnly d

42、data thatt is absooluteely nnecesssaryy forr thee appplicaationn to funcctionn, orr exppensiive tto trransfform intoo a rreadyy-to-use formmat. If ddesiggningg a mmemorry-inntenssive appllicattion, dettect low-memoory sscenaarioss andd dessign a meechannism for priooritiizingg thee datta too disscar

43、dd as avaiilablle meemoryy deccreasses.設計緩存時時，考慮以以指方針：明確確性能目標標。例如，制制定最響應應時間電池池壽命，使特定設備備進行測試試。數(shù)移動動設備只使使閃存，桌面面機器相比比，讀速度更慢慢。緩存存有靜態(tài)數(shù)數(shù)據(jù)，而非非易失性數(shù)數(shù)據(jù)。間歇歇性網(wǎng)絡連連接場景，考慮慮緩存那些些應程序需需數(shù)據(jù)。選擇擇合適緩存存地點，例例如設備、移動動網(wǎng)關(guān)或數(shù)數(shù)據(jù)庫服務務器。設計計所需存最最程序。緩緩存那些實實現(xiàn)程序功功能所必須須數(shù)據(jù)，或或轉(zhuǎn)變成格式式數(shù)據(jù)。如如果設計個個存密集型型程序，就就需檢測存，并設計計個機制，存存減，決定定數(shù)據(jù)丟棄棄優(yōu)先級。Commmuniica

44、tiionDevvice commmuniccatioon inncluddes wwirelless commmuniccatioon (oover the air) andd wirred ccommuunicaationn witth a hostt PC, as welll as moree speeciallizedd commmuniicatiion ssuch as BBluettoothh or Infrraredd Datta Asssociiatioon (IIrDA). Whhen ccommuunicaatingg oveer thhe aiir, cconsiider

45、 dataa seccuritty too prootectt sennsitiive ddata fromm theeft oor taamperring. If you are commmuniccatinng thhrouggh Weeb seervicce innterffacess, usse meechannismss succh ass thee WS-Secuure sstanddardss to secuure tthe ddata. Keeep inn minnd thhat wwirelless deviice ccommuunicaationn is moree lik

46、kely to bbe innterrrupteed thhan ccommuunicaationn froom a PC, and thatt youur apppliccatioon miight be rrequiired to ooperaate ffor llong periiods in aa dissconnnecteed sttate.通信設備通通信包括無無線通信，主機有線通信，更加特殊諸如藍牙或紅線通信。使無線通信，必須考慮數(shù)據(jù)安全性，防止敏感數(shù)據(jù)被盜或被篡改。如果通過網(wǎng)絡接口進行通信，那么就使諸如WS安全標準機制保護數(shù)據(jù)。牢記設備無線通信PC機相比，被斷能性更。那樣，應程序

47、必須長時間沒有網(wǎng)絡連接常工作Consiider the folllowinng guuidelliness wheen deesignning yourr commmuniicatiion sstrattegy: DDesiggn assynchhronoous, threeadedd commmuniicatiion tto immprovve ussabillity in ooccassionaally connnecteed sccenarrios. IIf yoou arre deesignning an aappliicatiion tthat willl runn on a moo

48、bilee phoone, conssiderr thee efffectss of receeivinng a phonne caall ddurinng coommunnicattion or pprogrram eexecuutionn. Deesignn thee appplicaationn to alloow itt to susppend and resuume, or eeven exitt thee appplicaationn. PProteect ccommuunicaationn oveer unntrussted connnectiions, succh ass We

49、bb serrvicees annd otther overr-thee- aiir meethodds. IIf yoou muust aaccesss daata ffrom multtiplee souurcess, innterooperaate wwith otheer apppliccatioons, or wwork whille diisconnnectted, conssiderr usiing WWeb sserviices for commmuniccatioon. IIf yoou arre ussing WCF for commmuniccatioon annd ne

50、eed tto immplemment messsage queuuing, connsideer ussing WCF storre annd foorwarrd.設計通通信策略時時，考慮以以指方針：設計計異步線程程通信提間歇性網(wǎng)網(wǎng)絡連接場場景性。如果果設計個運運行于移動動電話應程序，考考慮通信或或程序執(zhí)行行期間接電電話影響。應程序設計計暫停，繼繼續(xù)，或退退出。防止止設備不靠連接進行通通信，例如如網(wǎng)絡服務務其無線方式式服務。如果果必須從個源源獲數(shù)據(jù)，其應程序協(xié)作作，或未聯(lián)聯(lián)網(wǎng)工作，那那么就考慮慮使網(wǎng)絡服服務進行通通信。如果果使WCF進行行通信，同同時需實現(xiàn)現(xiàn)消息隊列列，那么就就考慮使WWCF

51、存儲儲轉(zhuǎn)發(fā)Confiiguraationn MannagemmentWheen deesignning deviice cconfiiguraationn mannagemment, connsideer hoow too hanndle deviice rresetts, aas weell aas whhetheer yoou waant tto alllow conffigurratioon off youur apppliccatioon ovver tthe aair oor frrom aa hosst PCC.Connsideer thhe foollowwing guiddel

52、innes wwhen desiigninng yoour cconfiiguraationn-mannagemment straategyy:配置管管理設計設設備配置管管理時，考考慮處理設設備復位，否通過無線方式或主機方式配置應程序。設計配置管理策略時，考慮以指方針： DDesiggn foor thhe reestorratioon off connfiguuratiion aafterr a ddevicce reeset. IIf yoou haave yyou eenterrprisse daata iin Miicrossoft SQL Servver 22005 or 22008

53、 and desiire aan accceleerateed tiime tto maarkett, coonsidder uusingg merrge rrepliicatiion wwith a “buy and conffigurre” appplicaationn froom a thirrd paarty. Merrge rrepliicatiion ccan ssynchhroniize ddata in aa sinngle operratioon reegarddlesss of netwwork banddwidtth orr datta siize. DDue tto m

54、eemoryy limmitattionss, chhoosee binnary formmat oover Exteensibble MMarkuup Laanguaage (XML) forr connfiguuratiion ffiless PProteect ssensiitivee datta inn devvice conffigurratioon fiiles. CConsiider usinng coompreessioon liibrarry rooutinnes tto reeducee thee memmory requuiremmentss forr connfiguu

55、ratiion aand sstatee infformaationn. IIf yoou haave aa Miccrosooft AActivve Diirecttory dirrectoory sserviice iinfraastruucturre, cconsiider usinng thhe Syystemm Cennter Mobiile DDevicce Maanageer innterfface to mmanagge grroup conffigurratioon, aautheenticcatioon, aand aauthoorizaationn of deviices

56、. Seee thee Tecchnollogy Conssiderratioons ssectiion ffor rrequiiremeents for the Mobiile DDevicce Maanageer.考慮慮設備復位位配置參數(shù)數(shù)恢復。如果果Micrrosofft SQQL Seerverr 20005 或20088擁有企業(yè)業(yè)級數(shù)據(jù)，同同時期望縮縮短市時間間，那么就就考慮使第第三方“buy and conffigurre”應進行合并并復制。合合并復制以以通過單步步操作同步步數(shù)據(jù)，而而不管網(wǎng)絡絡帶寬或數(shù)數(shù)據(jù)。從配配置文存儲儲所需看，選選擇二進制制格式，而而非XMLL格式。保護護設備

57、配置置文敏感數(shù)數(shù)據(jù)?？紤]慮使壓縮文文減配置狀態(tài)信信息存儲空空間需求。如果果擁有Miccrosooft AActivve Diirecttory服務基礎礎設施，那那么就考慮慮使Sysstem Centter MMobille Deevicee Mannagerr接口管理設設備群組配配置、認證證授權(quán)信息息。參考Tecchnollogy Conssiderratioons節(jié)關(guān)于Mobbile Deviice MManagger需求求部分。本文翻譯”Dataa Acccess”、” Debbuggiing”、” Devvice”、” Excceptiion MManaggemennt” Logggin

58、gg”部分。Datta AcccesssDatta acccesss on a moobilee devvice is cconsttrainned bby unnreliiablee nettworkk connnecttionss andd thee harrdwarre coonstrraintts off thee devvice itseelf. Whenn dessigniing ddata acceess, conssiderr howw loww banndwiddth, highh lattencyy, annd inntermmitteent cconneectivvity

59、 willl imppact yourr dessign.數(shù)據(jù)存存移動設設備數(shù)據(jù)存存受不靠網(wǎng)絡連接接設備本身身硬限制。因此，設設計數(shù)據(jù)存存策略時候，考慮慮帶寬、延時時間歇性網(wǎng)網(wǎng)絡連接影影響。Connsideer thhe foollowwing guiddelinnes wwhen desiigninng daata aaccesss: PProgrram ffor ddata inteegritty. FFiless lefft oppen ddurinng deevicee susspendd andd powwer ffailuures may causse daata-iinteggr

60、ityy isssues, esppeciaally whenn datta iss stoored on aa remmovabble sstoraage ddevicce. IIncluude eexcepptionn hanndlinng annd reetry logiic too enssure thatt fille opperattionss succceedd. DDo noot asssumee thaat reemovaable storrage willl alwways be aavaillablee, ass a uuser can remoove iit att a