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基于android系统的即时通信系统研究学士.doc 57页
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基于android系统的即时通信系统研究学士.doc
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摘要即时通信IM(InstantMessaging)是目前Internet上最为流行的通讯方式,而各种各样的即时通信软件也层出不穷,服务上也提供了越来越丰富的通信服务功能。随着互联网的发展,即时通信的运用日益广泛,即时通信软件业方兴未艾。本设计构建了一个基于Android平台的即时通信系统,包括即时通信系统的客户端和服务器。其中服务器采用Java语言开发的,客户端是基于Android平台采用Java语言,利用了TCP/IP协议,Socket套接字进行研究开发。设计实现了客户端之间的文本、图片与语音信息的实时数据通信等功能。本设计采用了常见的MVC设计模式,对系统进行了分层建模,对客户端的各个模块部分都进行分析设计,提出了系统的体系结构和整体构架设计方案,阐述了系统实现应用的关键技术,建立了可扩展的会话模型,采用松散耦合的方式设计,实现了Android平台上的移动即时通信系统。关键字:即时通信;Android;TCP/IP;J***A;MVC AbstractIM(InstantMessaging)arethemostpopularwayofcommunication,theInternetandallkindsofInstantmessagingsoftwarealsoemergeinendlessly,Servicealsoprovidesmoreandmorerichcommunicationservicefunctions.AlongwiththedevelopmentoftheInternet,theuseofinstantcommunicationisbecomingmoreandmorewidely,ininstantmessagingsoftware.Thisdesigntobuildareal-timecommunicationsystembasedonAndroidplatform,includinginstantcommunicationsystemoftheclientandtheserver.TheserverusingJavalanguagedevelopment,theclientisbasedontheAndroidplatformusingtheJavalanguage,usingtheTCP/IP,Socketforresearchanddevelopment.Designandimplementationoftext,images,andbetweentheclientvoiceinformationofreal-timedatacommunicationfunctions.ThisdesignadoptscommonMVCdesignpattern,systemforthehierarchicalmodeling,analyzeseverymodulepartclientdesign,proposesthearchitectureofsystemandtheoverallarchitecturedesign,expoundsthekeytechnologyofsystemimplementation,extensiblesessionmodelisestablished,thedesignUSEStheloosecouplingway,realizedtheAndroidplatformofmobileinstantmessagingsystem.Keywords:IMATCP/IP;JTheMVC 目录1绪论 11.1课题背景 11.2研究的目的和意义 11.3论文的主要内容和组织结构 22开发环境及相关技术的介绍 42.1开发环境 42.2开发软件介绍 42.2.1关于Eclipse 42.2.2JavaJDK与AndroidSDK 42.2.3ADT介绍 52.2.4MySQL简介 52.3相关开发技术介绍 62.3.1Java基础介绍 62.3.2Android平台 82.3.3TCP/IP协议 123系统需求分析 163.1可行性分析 163.2系统功能需求 163.3数据流图 173.3.1顶层数据流图 173.3.2一层数据流图 184系统设计 194.1系统总体架构设计 194.2移动客户端设计 194.2.1客户端基本通信流程设计 204.2.2客户端功能模块设计 214.3服务器端设计 235系统测试 245.1服务器测试 245.2客户端测试 275.2.1登陆模块测试 275.2.2注册模块测试 295.2.3找朋友与设置模块测试 305.2.4即时聊天模块测试 345.3数据库测试 375.3.1数据库的建立 375.3.2数据库
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2012年中考英语冲刺 八U6T3SC.ppt 47页
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Topic3Bicyclesarepopular.执教:陈惠莉UNIT6EnjoyCyclingTopic3Bicyclesarepopular.clapgroanstampGuessthemeaningofthefollowingwords:Classactivity拍呻吟跺脚WordsandphrasesinSectionC:courage[,k?rid?] 勇气lead[li:d] 带领(过去式led[led]) smooth[smu:?] 平坦的success[s?k'ses] 成功cyclist['saiklist] 骑自行车的人achievement[?'t?i:vm?nt] 成就middle['midl] 中间的path[p?:θ] 道路challenge['t?aelind?]挑战head-on['hed'?n] 面对面地WordsandphrasesinSectionC:comeback['k?m,baek] 复出TourdeFrance环法自行车赛goondoingsth继续做某事till[til] 直到onceagain再一次WordsandphrasesinSectionC:certain['s?:tn] 确定的superstar['sju:p?st?:] 超级明星final['fainl]最后的result[ri'z?lt]结果broken弄坏了的WordsandphrasesinSectionC:courage[,k?rid?] 勇气lead[li:d] 带领(过去式led[led]) smooth[smu:?] 平坦的success[s?k'ses] 成功cyclist['saiklist] 骑自行车的人WordsandphrasesinSectionC:achievement[?'t?i:vm?nt] 成就middle['midl] 中间的path[p?:θ] 道路challenge['t?aelind?]挑战head-on['hed'?n] 面对面地WordsandphrasesinSectionC:comeback['k?m,baek] 复出TourdeFrance环法自行车赛goondoingsth继续做某事till[til] 直到onceagain再一次WordsandphrasesinSectionC:certain['s?:tn] 确定的superstar['sju:p?st?:] 超级明星final['fainl]最后的result[ri'z?lt]结果broken弄坏了的WordsandphrasesinSectionC:LanceArmstrong(兰斯?阿姆斯特朗)cyclist['saiklist] TourdeFranceRead1a,circlethefollowingwordsandguesstheirmeaningsinthepassage.couragebeatfaceleadracerecordsmoothsuccesstopRead1a,circlethefollowingwordsandguesstheirmeaningsinthepassage.courage勇气beat打败face面对lead带领race比赛record记录smooth顺利的success成功top顶尖的1.WhoisLanceArmstrong?2.Washispathtosuccesssmooth?3.Howdidhedealwiththechallengesinhislife?4.HowmanytimesdidhewintheTourdeFrance?5.Whatdoyouthinkofhim?Why?1bWorkaloneRead1aagainandanswerthefollowingquestions.1.WhoisLanceArmstrong?2.Washispathtosuccesssmooth?3.Howdidhedealwiththechallengesinhislife?Heisacyclist.No,itwasn’t.Hefacedthemhead-on.4.HowmanytimesdidhewintheTourdeFrance?5.Whatdoyouthinkofhim?Why?He’sthegreatestcyclistintheworldbecausehehasastrongwill.HewontheTourdeFranceseventimes.Read1aanothertimeandfindoutthephrases.by1996begintodomakeacomebackgoondoingsth.from…tillrideintoby1996直到1996年make
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人教版2016年秋季八年级英语上册《Unit 5 Do you want to watch a game show》同步练习.doc 8页
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Unit5Doyouwanttowatchagameshow一、单项选择(共15小题;共15分)1. It'scold,sowedecide?out. A.go B.togo C.nottogo D.went2. Iexpected?yourfriend,butmycarbrokedownontheway. A.meet B.meeting C.tomeeting D.tomeet3. Goldilocksdecided?forawalkintheforest. A.go B.togo C.going D.goes4. Hepromised?hisoldfriendduringhisstayinTianjin. A.see B.seeing C.saw D.tosee5. Weneed?ourteetheveryday. A.brush B.tobrush C.brushes D.tobrushes6. ---?doyou?thisnewclub? ---It'sniceandbig. A.Wthinkof B.Hthinkof C.Wlike D.Hthink7. ---WhatdoyouthinkoftheTalkShow,Paul? ---Ican't?it.It'stooboring. A.walk B.stand C.climb D.jump8. Canyou?whattimethetrainleaves? A.findout B.find C.lookfor D.lookat9. Allthestudentsaregettingready?theirhomework. A.do B.todo C.doing D.does10. ---YanHuiwasillyesterday.Ithinkyoucan?today. ---OK.Iwilltrytofinishthework. A.takeherplace B.takeplace C.intheplaceof D.inthefirstplace11. Thechildrendecide?theirschoolyardthisFridayafternoon. A.clean B.toclean C.cleaning D.cleaned12. Hisfatherexpects?himtovisitthemuseum. A.take B.takes C.taking D.totake13. NowmanyforeignersstarttolearnChinese.Butsomeofthemfounditdifficult?Chinesewell. A.learning B.learn C.tolearn D.learned14. Attimes,parentsfinditdifficult?withtheirchildren. A.talk B.talked C.talking D.totalk15. Manyoldmenprefer?inacountryside. A.tolive B.living C.live D.lived二、单词拼写(单句首字母填空)(共15小题;共15分)16.Wehadad?aboutTVshowsinclasstoday.17.Doyouliketowatcha?movies?18.H7N9ishorrible.Itissaidthatithasmademorethan40peoplel?theirlives.19.TheTVplayINHERITORS(继承者们)isverys?andmostpeopleinChinaknowit.20.ChineseandJapanesehavemanythingsinc?.21.Ih?you'refeelingbettersoon.22.Whatwillh?ifIdon'thavemyIDcard?23.Everyonee?hertopasstheexam,butshedidn'tintheend.24.Congratulations(恭喜)!It'saverys?performance.25.Evenchildrencanunderstandthestorybecauseit'swritteninverys?English.26.Wehadad?aboutTVshowinclassmeetingtoday.27.JackChenisagreata?moviestar.28.Ifyoul?thebook,youmustpayforit.29.AlmosteverybodythinksthatBillGatesisaverys?person.30.Thetwinshavema
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