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基于android的導(dǎo)航系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)畢業(yè)論文-wenkub.com

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【正文】 為達(dá)到這個(gè)目的,系統(tǒng)必須能夠在一個(gè)應(yīng)用程序的任何一部分被需要時(shí)啟動(dòng)一個(gè)此應(yīng)用程序的進(jìn)程,并將那個(gè)部分的Java對(duì)象實(shí)例化。1 應(yīng)用程序組件Android的一個(gè)核心特性就是一個(gè)應(yīng)用程序可以使用其它應(yīng)用程序的元素(如果那個(gè)應(yīng)用程序允許的話)。當(dāng)應(yīng)用程序中的任何代碼需要被執(zhí)行時(shí),Android啟動(dòng)此進(jìn)程,而當(dāng)不再需要此進(jìn)程并且其它應(yīng)用程序又請(qǐng)求系統(tǒng)資源時(shí),則關(guān)閉這個(gè)進(jìn)程。s created and registered in code, the intent filter is instantiated directly as anIntentFilter object. All other filters are set up in the manifest.For more on intent filters, see a separate document, Intents and Intent Filters.漢語(yǔ)譯文應(yīng)用程序基礎(chǔ)Android應(yīng)用程序使用Java編程語(yǔ)言開(kāi)發(fā)。s intent filters inform Android of the kinds of intents the ponent is able to handle. Like other essential information about the ponent, they39。s bundled into the Android package, the .apk file that also holds the application39。s responding to a request from a ContentResolver. And a broadcast receiver is active only while it39。s starting, it calls startActivityForResult() instead of startActivity(). For example, if it starts an activity that lets the user pick a photo, it might expect to be returned the chosen photo. The result is returned in an Intent object that39。s involved.See the separate Content Providers document for more information on using content providers.Whenever there39。t block other ponents or the user interface, they often spawn another thread for timeconsuming tasks (like music playback). See Processes and Threads, later.Broadcast receiversA broadcast receiver is a ponent that does nothing but receive and react to broadcast announcements. Many broadcasts originate in system code — for example, announcements that the timezone has changed, that the battery is low, that a picture has been taken, or that the user changed a language preference. Applications can also initiate broadcasts — for example, to let other applications know that some data has been downloaded to the device and is available for them to use.An application can have any number of broadcast receivers to respond to any announcements it considers important. All receivers extend the BroadcastReceiver base class.Broadcast receivers do not display a user interface. However, they may start an activity in response to the information they receive, or they may use the NotificationManager to alert the user. Notifications can get the user39。s window by the () method. The content view is the View object at the root of the hierarchy. (See the separate User Interface document for more information on views and the hierarchy.)ServicesA service doesn39。s files. To conserve system resources, applications with the same ID can also arrange to run in the same Linux process, sharing the same VM.Application ComponentsA central feature of Android is that one application can make use of elements of other applications (provided those applications permit it). For example, if your application needs to display a scrolling list of images and another application has developed a suitable scroller and made it available to others, you can call upon that scroller to do the work, rather than develop your own. Your application doesn39。s code needs to be executed, and shuts down the process when it39。最后,我要感謝父親和母親。我想說(shuō),雷老師、潘老師真的謝謝您們了。首先,我要感謝我的指導(dǎo)老師_____和_____老師。GOSLING,DAVIDOFSOFTWARE數(shù)據(jù)庫(kù)原理與應(yīng)用教程[M].[13] 亢勇,陳自力,李鵬,路平.計(jì)算機(jī)系統(tǒng)應(yīng)用2001.[6] [J].西安財(cái)經(jīng)學(xué)院[4] (美),GaryA得益于Android是一個(gè)開(kāi)放的多功能開(kāi)源平臺(tái),對(duì)網(wǎng)絡(luò)等技術(shù)有很好的支持。這些問(wèn)題,在今后需要引起重視。從一開(kāi)始對(duì)于如何著手這個(gè)課題的無(wú)從下手,到自己不斷地摸索和向老師同學(xué)請(qǐng)教學(xué)習(xí),到最后熟悉Android的整個(gè)開(kāi)發(fā)流程和環(huán)境并完成這個(gè)系統(tǒng),一路走來(lái),感覺(jué)自己收獲頗多。 } value = ()。 }獲取訊飛語(yǔ)音識(shí)別結(jié)果:protected Dialog onCreateDialog(int id) { RecognizerDialog recognizerDialog = new RecognizerDialog( , appid=51b1ad4e)。 strInfo += ,。 String strInfo = 在。 ().add(poiOverlay)。 // 將地圖移動(dòng)到第一個(gè)POI中心點(diǎn) if (() 0) { (onGetPoiResult, the onGetPoiResult res 2)。 (, 抱歉,未找到結(jié)果, ).show()。一切都像是從頭開(kāi)始,從剛開(kāi)始摸索搭建Android開(kāi)發(fā)環(huán)境平臺(tái)到熟悉Android系統(tǒng)架構(gòu),到API的引入,再到完成這個(gè)系統(tǒng)的開(kāi)發(fā),最后簽名打包發(fā)布,這個(gè)過(guò)程設(shè)計(jì)多個(gè)領(lǐng)域的知識(shí)相結(jié)合:Android、Java、xml、百度API,科大訊飛API等,我通過(guò)上網(wǎng)上去查資料,逛論壇,研究DEMO,向別人請(qǐng)教等各種方式,在不斷實(shí)踐中吸取經(jīng)驗(yàn)和教訓(xùn),最終終于在我的堅(jiān)持不懈的努力下解決了這個(gè)難題。此外由于Android平臺(tái)的碎片化問(wèn)題日趨嚴(yán)重,同一時(shí)間多種版本的存在給用戶以及開(kāi)發(fā)者帶來(lái)了不小的麻煩,不同手機(jī)的分辨率不盡相同,這也是碎片化問(wèn)題存在的根本原因所在,該問(wèn)題的存在可能導(dǎo)致應(yīng)用程序無(wú)法在相關(guān)安卓設(shè)備上運(yùn)行。同時(shí)POI顯示也被略加修改,以適應(yīng)客戶對(duì)界面效果的需求。兩種方式來(lái)實(shí)現(xiàn)放大縮小操作,每次放大或縮小后,系統(tǒng)都會(huì)獲取新的地圖數(shù)據(jù)并刷新界面。在右圖中能顯示用戶的所在位置,單擊satellite按鈕后,界面會(huì)顯示衛(wèi)星視圖,再次單擊又會(huì)回到普通地圖視圖模式??梢詥⒂脙?nèi)置的縮放控件。 用戶界面設(shè)計(jì)圖37地圖導(dǎo)航系統(tǒng)主界面,使用了相對(duì)布局(RelativeLayout)來(lái)進(jìn)行布局,包括:城市搜索、經(jīng)緯縱橫、公交搜索、景點(diǎn)概覽、路線規(guī)劃、地圖定位、周邊搜索七個(gè)功能。(5)RouteOverlay:公交、步行、駕車導(dǎo)航線路圖層,將公交、步行、駕車出行方案的路線及關(guān)鍵點(diǎn)顯示在地圖上。 主要類的設(shè)計(jì)和接口(1)Overlay:覆蓋物的抽象基類,所有的覆蓋物均繼承此類的方法,實(shí)現(xiàn)用戶自定義圖層顯示。(true)。交通圖: (true)。例如您所看到包括:馬路街道、建筑、公園、學(xué)校、湖泊等內(nèi)容就是在一個(gè)圖層上,它屬于基本的地圖圖層。點(diǎn)擊Menu菜單的相應(yīng)按鈕,則會(huì)調(diào)出退出系統(tǒng)和關(guān)于系統(tǒng)選項(xiàng),退出系統(tǒng)的同時(shí)將清楚圖層信息。:usespermission android:name= /usespermission android:name= /usespermission android:name= /usespermission android:name= /usespermissionandroid:name= /usespermission android:name= /usespermission android:name= /usespermission android:name= /usespermission android:name= /usespermission android:name=/以下為地圖導(dǎo)航系統(tǒng)的運(yùn)行流程:否是開(kāi)始顯示地圖圖層用戶位置有無(wú)改變?采集更新的位置信息定位用戶位置偵聽(tīng)用戶點(diǎn)擊事件判斷命令類型顯示各類圖層清除圖層退出結(jié)束圖35系統(tǒng)運(yùn)行流程用戶界面為地圖模式下的地圖圖層,界面最上方標(biāo)明實(shí)時(shí)衛(wèi)星數(shù)據(jù),包括用戶當(dāng)前所在位置的經(jīng)度、緯度、衛(wèi)星視圖等信息。用戶可以到百度官方網(wǎng)站去獲取授權(quán)。第3章 系統(tǒng)設(shè)計(jì)與實(shí)現(xiàn)本系統(tǒng)為C/S架構(gòu)模式,系統(tǒng)主要通過(guò)在系統(tǒng)客戶端完成一系列操作。(7)附近搜索該地圖導(dǎo)航系統(tǒng)能提供附近的一些生活信息查詢,如餐飲點(diǎn)、娛樂(lè)場(chǎng)所、銀行、大型超市、商場(chǎng)百貨、交通設(shè)施、汽車服務(wù)點(diǎn)、政府部門(mén)機(jī)構(gòu)等定制信息查詢,然后在手機(jī)屏幕上羅列出來(lái)。(3)地圖定位地圖導(dǎo)航系統(tǒng)在用戶打開(kāi)GPS之后能通過(guò)GPS模塊和網(wǎng)絡(luò)獲取當(dāng)前用戶所在的經(jīng)緯度,同時(shí)還能根據(jù)相關(guān)算法,在地圖上精確地標(biāo)注用戶當(dāng)前所在的地理位置的經(jīng)緯度,并顯示用戶當(dāng)前所在位置。(6) 公交查詢:能夠查詢?nèi)珖?guó)各大中小城市的聯(lián)網(wǎng)公交路線并在地圖上顯示路線。(2) 定位操作:用戶打開(kāi)GPS之后,地圖導(dǎo)航系統(tǒng)能通過(guò)GPS模塊和網(wǎng)絡(luò)獲取當(dāng)前用戶所在的經(jīng)緯度。因此,在需求分析階段一定要嚴(yán)謹(jǐn)對(duì)待,不能馬虎求成。(3)系統(tǒng)管理可行性“基于android的導(dǎo)航系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)”對(duì)硬件的要求不高,以當(dāng)前的智能手機(jī)硬件水平來(lái)看,完全能夠支持把該系統(tǒng)部署在手機(jī)上。由于本系統(tǒng)采用Java語(yǔ)言環(huán)境和Eclipse開(kāi)發(fā)環(huán)境 ,Java語(yǔ)言本身所具有的面向?qū)ο蟮奶攸c(diǎn)以及強(qiáng)大的類庫(kù)支持,加上谷歌公司提供的Android SDK和ADT功能已經(jīng)相對(duì)完善,開(kāi)發(fā)該系統(tǒng)所需的技術(shù)問(wèn)題已經(jīng)得到解決。系統(tǒng)的可行性分析在基于android的導(dǎo)航系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)的整個(gè)建設(shè)過(guò)程中占有十分重要的地位,系統(tǒng)的可行性分析會(huì)決定基于android的導(dǎo)航系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)是否可能實(shí)現(xiàn)或是否值得去實(shí)現(xiàn)。2. 在地圖界面通過(guò)氣泡模式展示出來(lái)三、出行導(dǎo)航選擇路徑1. 已知經(jīng)緯度查詢2. 輸入地址的反編譯3. 提供公交、駕車、步行三種方式的出行路線規(guī)劃4.提供路線中各個(gè)站點(diǎn)的信息查詢四、景點(diǎn)概覽1. 查詢?nèi)珖?guó)各地的景點(diǎn)信息2. 對(duì)附近出名的景點(diǎn)進(jìn)行推薦3.展示景點(diǎn)當(dāng)?shù)氐奶厣〕?、住宿、娛?lè)設(shè)施等信息??偟膩?lái)說(shuō),地圖服務(wù)功能是在手機(jī)用戶接入網(wǎng)絡(luò)后,能實(shí)現(xiàn)顯示電子地圖、實(shí)現(xiàn)自我定位、城市搜索、路線規(guī)劃等綜合功能。其強(qiáng)大、快速的處理能力吸引了很多手機(jī)廠商如HTC、三星、MTORALA、華為、魅族、聯(lián)想、酷派、中興、小米、華碩
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