【正文】 tend to customize their own Android systems. These facts make Android lack of a general brand image, so people may feel confused and say ‘No’ to Android. iPhone OS focuses more on entertainment and it’s very friendly. But Apple is too cool to attract more customers: Diehard fans of Steve Jobs buy every product made by Apple, and people who dislike the style Apple do things may just sniffed at Apple.Besides, Android Froyo succeeds the features of open platforms well. It’s a ‘users only’ platform, because users of Froyo can almost customize everything they want. And members of Open HandsetAlliance tend to provide more choices for users. And iOS 4, typically closed platform member, manages everything ranging from OS development to device manufacturing. It’s a ‘consider for users’ some extent, users of Android canonizes ‘free’ and ‘open’, what they care is if they have 100% management of their handsets, no matter whether the OS is called ‘Android’ or ‘Another’. Apple users are loyal to the brand。 they would like to authorize Apple to make decisions for them. So although some iPhone users love physical keyboards, they bought iPhone. In other words, Android users think a lot of ‘open platform’ rather than the brand Google。 most iPhone users are follower of Apple, they love the ‘closed platforms’ created by Steve Jobs.Both Android and iPhone have their unique IDE, SDK and other characteristics. Believe it or not, no perfection exists in the world, so none of today’s mobile platforms fully meets the needs of users and researchers. The choice of platform boils down to the needs of users and researchers, this article should make the decision easier. Of course the content of this article is time sensitive。 platforms will gradually meet the demands of consumers as new technologies emerging.References[1] Dave Mark, Jeff LaMarche. “Beginning iPhone 3 Development: Exploring the iPhone SDK”. 2009.[2] Erica Sadun. “The iPhone Developer’s Cookbook: Building Application with the iPhone SDK”, 2009.[3] Ed Burnette. “Hello, Android: Introducing Google’s Mobile Development Platform”, 2009.[4] Ableson, Charlie Collins, Robi Sen. “Unlocking Android: A Developer’s Guide”, 2010.[5] Hee Yeon Cho, Choon Sung Nam, Dong Ryeol Shin. “A Comparison of Open and Closed Mobile Platforms”.International Conference on Electronics and Information Engineering, 2010.[6] Ryan C. McKeen, Finis R. Price III. “DROID v iPHONE”. ABA Journal, 2010.[7] Mies Ginny, Sullivan Mark. “iPhone 4 vs. Droid X: A HeadtoHead Comparison”. PC World, 2010.[8] Fleishman, Glenn. “More Options With Tomorrow39。s Cell Phones”. PC World, 2008.[9] Keller, Mike. “Jailbreaking Your iPhone: The Pros and Cons”. PC World, 2010.分析和比較開放和封閉的移動(dòng)平臺(tái)摘　　要隨著Android Froyo和iPhone 4版本的發(fā)布，開放式和封閉式的移動(dòng)平臺(tái)之間的戰(zhàn)爭(zhēng)愈演愈烈。作為雙方代表，F(xiàn)royo和iOS4在制度的框架，新功能，應(yīng)用市場(chǎng)和一體化模式有很大的不同。據(jù)谷歌和蘋果的公司精神，我們做上述各點(diǎn)的一些分析和比較，說明Android的差異，從iPhone淺向更深，然后得出結(jié)論開放式和封閉式的移動(dòng)平臺(tái)的特點(diǎn)，目的是為移動(dòng)平臺(tái)的研究人員提供客觀的參考，幫助他們對(duì)移動(dòng)行業(yè)有更清晰的認(rèn)識(shí)。當(dāng)然，F(xiàn)royo和iOS4都具有自己的優(yōu)勢(shì)和劣勢(shì)，他們距離完美還有很大的距離，依然有進(jìn)一步改善的空間。關(guān)鍵詞：Android；iPhone；Froyo；OS 4；智能手機(jī)；移動(dòng)平臺(tái)1 介紹近年來，智能手機(jī)的普及率不斷攀升。越來越多的智能手機(jī)被賣出和很多人都更加青睞于它們。智能手機(jī)給用戶帶來了極大方便，并為智能手機(jī)研究者創(chuàng)建了機(jī)會(huì)。這就是說，智能手機(jī)的廣泛普及，對(duì)雙方都有利雙方。同時(shí)，智能手機(jī)操作系統(tǒng)發(fā)展成為最智能的行業(yè)之一。要成為一個(gè)智能手機(jī)操作系統(tǒng)，該系統(tǒng)應(yīng)：。顯然，它們也有一些弱點(diǎn)：1，電池的限制。2。較電腦CPU來說，手機(jī)CPU性能差。，RAM的使用可能會(huì)導(dǎo)致數(shù)據(jù)丟失?，F(xiàn)在智能手機(jī)操作系統(tǒng)的兩巨頭是Android和iPhoneOS。一方面，Android是基于Linux內(nèi)核，Dalvik虛擬機(jī)，它是開源的。上層的Android是基于Java的，允許開發(fā)者使用谷歌SDK開發(fā)Android應(yīng)用程序和在Android 市場(chǎng)銷售他們的軟件。另一方面，iPhone操作系統(tǒng)基于Unix內(nèi)核和達(dá)爾文模型，但它是封源的，是從Mac OS X繼承而來，是iPhone，iPod Touch和iPad默認(rèn)的操作系統(tǒng)?；贑語言的軟件可以在iPhone OS上運(yùn)行，就像Android，你可以開發(fā)自己的iPhone應(yīng)用程序，并上傳到蘋果的App Store進(jìn)行銷售。通過比較Android和iPhone OS的最新系統(tǒng)：Android Froyo和iOS4，我們可以了解下開放式和封閉式的智能手機(jī)操作系統(tǒng)的主要特點(diǎn)。雖然兩個(gè)操作系統(tǒng)的整體思路和功能設(shè)計(jì)有很大的不同，它初略分辨出哪一個(gè)更好一點(diǎn)。2 智能手機(jī) AndroidAndroid系統(tǒng)的體系結(jié)構(gòu)由5層，從底部到頂部分別是Linux內(nèi)核，Android運(yùn)行庫，應(yīng)用框架和應(yīng)用程序。Android提供的核心服務(wù)，如安全，內(nèi)存管理，進(jìn)程管理，網(wǎng)絡(luò)堆棧和驅(qū)動(dòng)器。作為軟件和硬件層之間的抽象層，Linux內(nèi)核隱藏硬件執(zhí)行的細(xì)節(jié)，并為上層提供綜合服務(wù)。Dalvik虛擬機(jī)和Java核心庫都包含在Android運(yùn)行層，提供Java核心庫的大多數(shù)功能。這些庫包含了應(yīng)用于Android組件的一系列C/C++庫。這些庫集成了應(yīng)用框架層，然后提供給開發(fā)人員。應(yīng)用程序框架層為程序的初始化提供了各種模塊，以簡(jiǎn)化元件的使用，讓開發(fā)商為所欲為，并提供其他服務(wù)軟件，當(dāng)然，在安全性上有所限制。主流應(yīng)用程序位于應(yīng)用層，包括電子郵件，短信，日歷，谷歌地圖，網(wǎng)頁瀏覽器和接觸。用戶可以直接與此層交互。Android的最新版本的Android Froyo，提出一些新的特點(diǎn)。它們是：，使用戶可以在手機(jī)上觀看Flash。 JavaScript引擎使得互聯(lián)網(wǎng)數(shù)據(jù)傳輸更加迅速。你可以將手機(jī)作為3G網(wǎng)卡或?qū)?G信號(hào)轉(zhuǎn)換為WiFi信號(hào)。 iPhoneiPhone OS是由4個(gè)抽象層組成：核心OS，核心服務(wù)，媒體和Cocoa Touch。核心操作系統(tǒng)和核心服務(wù)層使用C語言設(shè)計(jì)，來處理核心系統(tǒng)服務(wù)，使開發(fā)人員能夠執(zhí)行文件訪問，socket請(qǐng)求和數(shù)據(jù)處理。CFNetwork和SQLite同樣是這2層一部分。媒體層，根據(jù)其名稱，是用來控制視頻和音頻，以及處理二維和三維圖像。這一層中的Open GLES Quratz部分是用C語言編碼，而音頻核心和動(dòng)