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1、ThedevelopmentandapplicationofAndroidIntroductionAndroidAndroid(pronounced:[the'ændrɔid])isaLinux-basedopensourceoperatingsystem,mainlyusedinportabledevices.HandhelddeviceUniondevelopedandledbyGoogleandopen.ThereisnounifiedChinesename,"Andrews"and"securitycausedby"isanothernamepopularinma
2、inlandChina.AndroidoperatingsystemwasoriginallyfoundedbyAndyRubin(AndyRubin),primarilysupportthephone.August17,2005GoogleInc.(Google)acquisitionofacapitalinjection.November5,2007,GoogleInc.and84hardwaremanufacturers,softwaredevelopersandtelecomoperatorscomposedoftheopenhandhelddeviceAllia
3、nce(OpenHandsetAlliance)tojointlydevelopimprovedAndroidoperatingsystemandtheproductionofsmartphonesequippedwithAndroid,andgraduallyextendedtotheTabletPCandotherareas.Subsequently,theAndroidhasaccesstotheApacheopensourcelicense,Googlehasreleaseditssourcecode.Atthesametime,theoneresponsible
4、forthefurtherdevelopmentandmaintenanceoftheAndroidoperatingsystemAndroidOpenSourceProjectalsobeenestablished(AOSP).AndroidkernelbasedonLinux,inadditiontooutsidethekernel,themiddletier,databasemetadata,andtheC/C++towritetheAPIandapplicationframework.AndroidapplicationsthatusuallyJavadataba
5、sepreparedonthebasis,runtheprogram,theapplicationcodewillbeimmediatelytransformedintotheDalvikdex-code(theDalviktheExecutable),thentheAndroidoperatingsystemthroughtheuseof-timecompilationoftheDalvikvirtualmachinetooperation.InadditiontotheopenhandhelddeviceAlliance,Androidalsohasmanyofthe
6、opensourcecommunityofdevelopersfromaroundtheworldresponsiblefordevelopingAndroidapplicationsandthird-partyAndroidoperatingsystemtoextendandexpandthefunctionalityandperformanceoftheAndroid.AsofOctober2011,withover300,000certifiedapplicationontheAndroidmarket,thee-marketapplicationdownloads
7、theamountisalsoinDecember2011toreach10billion.BecauseAndroidisopen,soitcanthroughathirdpartywebsitetodownloadandinstallapplicationsthatarenotintheelectronicmarket.Theendof2010,datashowthatonlytheformallaunchoftwoyearsoftheoperatingsystemAndroidmarketsharehassurpasse
