【正文】 系統(tǒng) 版本的不同手機(jī)上不能正常運(yùn)行，在編程中如何對(duì)代碼進(jìn)行優(yōu)化，使我的浙江大學(xué)城市學(xué)院畢業(yè)論文 文獻(xiàn)綜述 17 程序能在更多的手機(jī)上正常運(yùn)行也是現(xiàn)在所面臨的重要問題之一。提高Android 游戲中動(dòng)畫展示的效果和效率，解決 Android 系統(tǒng)中動(dòng) 畫實(shí)現(xiàn)的問題。如何高效正確的進(jìn)行圖像的碰撞檢測(cè)將是我吃豆人游戲中解決的重點(diǎn)問題。在吃豆人游戲中，需要設(shè)計(jì)怪 物主動(dòng)跟蹤玩家的人工智能算法，并且可以通過參數(shù)對(duì)怪物的“聰明度”進(jìn)行調(diào)節(jié)。這些開放性的環(huán)境將會(huì)帶領(lǐng)這些新的應(yīng)用可能集成這些已經(jīng)存在的在線服務(wù)，當(dāng)然隨著日以具增的數(shù)據(jù)與服務(wù)在手機(jī)上的支持，手機(jī)上的安全缺陷也越發(fā)明顯。自從這時(shí)起谷歌開起了自己的時(shí)代， TMobile 的G1 的制造商臺(tái)灣 HTC 估算 G1 的發(fā)貨量在 2020 年底已經(jīng)超過 100 萬部。一個(gè) Android 的主要賣點(diǎn)是它使開發(fā)人員無縫把在線服務(wù)擴(kuò)展到手機(jī)。 Android 和許多企業(yè)尋找新途徑來整合他們的自己已有的業(yè)務(wù)到 android 上。 Android 沒有停在為其他平臺(tái)體用應(yīng)用支持：應(yīng)用的執(zhí)行依賴于頂層 JAVA 中間件，這個(gè)中間件運(yùn)行在嵌入式 Linux 內(nèi)核之上。Android 使用一個(gè)簡(jiǎn)單的許可標(biāo)簽分配模式限制訪問的資源，但其他應(yīng)用程序的原因必要性和便利，其 設(shè)計(jì)師們?cè)黾恿死Щ髮?duì)這個(gè)系統(tǒng)。 它沒有一個(gè) main（）函數(shù)功能或單一入口點(diǎn)執(zhí)行，相反，開發(fā)人員 必須在設(shè)計(jì)方面的應(yīng)用組件。我們進(jìn)行功能拆分，分成兩個(gè)應(yīng)用程序：一個(gè)用于跟蹤查看朋友和?？此麄儭Ｒ粋€(gè) Android 開發(fā)者選擇從根據(jù)不同的組件類型組件的目的決定 （如與一個(gè)用戶或存儲(chǔ)數(shù)據(jù)接口）。 Activity 提供一個(gè)用戶界面，Service 執(zhí)行后臺(tái)處理， Content 提供存儲(chǔ)， Broadcast receiver 接收機(jī)其他應(yīng)用程序的信息?！?Activity 可以自己開始，也可能通過傳遞和返回值。開發(fā)人員還可以在系統(tǒng)啟動(dòng)使用特殊的守護(hù)進(jìn)程， Service 通常定義一個(gè)遠(yuǎn)程過程調(diào)用（ RPC），其他系統(tǒng) 組件可以用來傳送接口命令和檢索數(shù)據(jù)，以及注冊(cè)一個(gè)回調(diào)函數(shù)。雖然 Content 供應(yīng)者通常存儲(chǔ)把數(shù)值放在數(shù)據(jù)庫記錄中，數(shù)據(jù)檢索是實(shí)現(xiàn)特殊的例子，文件也同時(shí)通過內(nèi)容提供商共享接口。應(yīng)用程序代碼也可以解決明確廣播接收機(jī)包括命名空間分配。通常情況下，這是作為在 FriendViewer activity 中進(jìn)行注冊(cè)。 25 在這種情況下，我們保留名稱“ FriendTracker”為服務(wù)執(zhí)行的核心組成部分的應(yīng)用程序邏輯。該 FriendProvider Content 提供保持最新的朋友地理坐標(biāo)， FriendTrackerControl 活動(dòng)用于啟動(dòng)和用戶界面停止跟蹤好友功能，該系統(tǒng)一旦啟動(dòng) BootReceiver 通知從廣播系統(tǒng)啟動(dòng)。盡管我們可以在這些組件內(nèi) 放置在 FriendTracker 應(yīng)用，但是我們?nèi)匀粍?chuàng)建了一個(gè)單獨(dú)的應(yīng)用程序來展示跨應(yīng)用的溝通。 Android 框架來通知這些方法的調(diào)用開始執(zhí)行在目標(biāo)應(yīng)用程序代碼。開發(fā)人員可以解決一個(gè)目標(biāo)組件使用其應(yīng)用的空間，他們也可以指定一個(gè)隱含的名稱。在接收端的接收者，開發(fā)者使用一 intent 過濾器來定制特殊的動(dòng)作字符串。為了簡(jiǎn)單起見，我們稱這個(gè)為件間通信（ ICC）。每個(gè)組件類型支持自己的類型 例如，當(dāng) FriendViewer 開始 FriendMap 的 FriendMap 活動(dòng)出現(xiàn)在屏幕上。 Understand android security the next generation of open operating systems won’t be on desktops or mainframes but on the small mobile devices we carry every day. The openness of these new environments will lead to new applications and markets and will enable greater integration with existing online services. However, as the importance of the data and services our cell phones support increases, so too do the opportunities for vulnerability. It’s essential that this next generation of platforms provide a prehensive and usable security by the Open Handset Alliance (visibly led by Google), Android is a widely anticipated open source operating system for mobile devices that provides a base operating system, an application middleware layer, a Java software 27 development kit (SDK), and a collection of system applications. Although the Android SDK has been available since late 2020, the frst publicly available Androidready “G1” phone debuted in late October 2020. Since then, Android’s growth has been phenomenal: TMobile’s G1 manufacturer HTC estimates shipment volumes of more than 1 million phones by the end of 2020, and industry insiders expect public adoption to increase steeply in 2020. Many other cell phone providers have either promised or plan to support it in the near future. A large munity of developers has organized around Android, and many new products and applications are now available for it. One of Android’s chief selling points is that it lets developers seamlessly . extend online services to phones. The most visible example of this feature is—unsurprisingly—the tight integration of Google’s Gmail, Calendar, and Contacts Web applications with system utilities. Android users simply supply a username and password, and their phones automatically synchronize with Google services. Other vendors are rapidly adapting their existing instant messaging, social works, and gaming services to Android, and many enterprises are looking for ways to integrate their own internal operations (such as inventory management, purchasing, receiving, and so forth) into it as desktop and server operating systems have struggled to securely integrate such personal and business applications and services on a single platform。 however, the specifc activity chosen on launch is marked by meta information in the manifest. In the FriendTracker application, for example, the FriendTrackerControl activity is marked as the main user interface entry point. In this case, we reserved the name “FriendTracker” for the service ponent performing the core application FriendTracker application contains each of the four ponent types. The FriendTracker service polls an external service to discover friends’ locations. In our example code, we generate locaFriendTracker application BootReceiver Broadcast receiver ActivityFriendTracker FriendProvider 30 Content provider Service FriendTracker control FriendViewer application FriendReceiver Broadcast receiver Activity FriendTracker Activity FriendViewer Figure 1. Example Android application. The FriendTracker and FriendViewer applications consist of multiple ponents of different types, each of which provides a different set of functionalities. Activities provide a user interface, services execute background processing, content providers are data storage facilities, and broadcast receivers act as mailboxes for messages from other randomly, but extending the ponent to interface with a Web service is straightforward. The FriendProvider content provider maintains the most recent geographic coordinates for friends, the FriendTrackerControl activity defnes a user interface for starting and stopping the tracking functionality, and the BootReceiver broadcast receiver obtains a notifcation from the system once it boots (the application uses this to utomatically start the FriendTracker service).The FriendViewer application bis primarily concerned with showing information about friends’ locations. The FriendViewer activity lists all friends and their geographic coordinates, and the FriendMap activity displays them on a map. The FriendReceiver broadcast receiver waits for messages t