【正文】 g as the users pay a small fee to the GPRS flow can be user location positioning, route planning etc. Function. In order to save the user of GPRS flow, design also developed offline map specific model, not connected to the Inter users can still for the GPS positioning.This paper will be divided into seven chapter was introduced. The first chapter the introduction, this paper introduces the background of the subject research, mobile GPS navigation development present situation and the main research topic in meaning and significance。 Chapter 3, 4, 5 in the key for this paper, this paper expounds the system demand, and the detailed design and the existing problem and so on。 This paper is the seventh rules summary.【Key Words】 J2ME，MIDP，GPS ，JSR179 ， Google Static Map III目錄摘要 .................................................................................................................................................................IABSTRACT.......................................................................................................................................................II目錄 ...............................................................................................................................................................III引言 ...............................................................................................................................................................V第一章　 緒論 .................................................................................................................................................1 課題研究背景 ............................................................................................................................................1 手機 GPS 導(dǎo)航發(fā)展現(xiàn)狀 ............................................................................................................................1 課題主要內(nèi)容和意義 ................................................................................................................................2第二章　 相關(guān)技術(shù)概覽 ..................................................................................................................................4 基于位置的服務(wù) ........................................................................................................................................4 基于位置服務(wù)的應(yīng)用范圍 ................................................................................................................4 基于位置服務(wù)的定位方法 ................................................................................................................4 移動地理信息系統(tǒng) ....................................................................................................................................6 J2ME 簡介 ...................................................................................................................................................7 J2ME 架構(gòu) ..........................................................................................................................................7 JVM ( 虛擬機 ) .................................................................................................................................8 MIDP( 移動信息設(shè)備簡表 ).............................................................................................................8 JSR179 開發(fā)包 ............................................................................................................................................9 GOOGLE API 簡介 .......................................................................................................................................10 路徑規(guī)劃的技術(shù)選擇 ..............................................................................................................................10 A 算法實現(xiàn)最短路徑搜索 ...............................................................................................................10 Google Directions API 提供服務(wù) ......................................................................................................11 路線規(guī)劃最終方法選擇 ..................................................................................................................12第三章　 軟件需求分析 ................................................................................................................................13 用戶需求 ..................................................................................................................................................13 功能模塊劃分 ..........................................................................................................................................13 功能模塊圖 ......................................................................................................................................14 功能要求 ..........................................................................................................................................14第四章　 詳細設(shè)計與開發(fā) ............................................................................................................................16 MIDLET 開發(fā)流程介紹 ..............................................................................................................................16 各功能模塊詳細設(shè)計 ..............................................................................................................................17IV 界面切換類 ......................................................................................................................................17 聯(lián)網(wǎng)地圖類 ......................................................................................................................................19 離線地圖類 ......................................................................................................................................24 各線程類 ..........................................................................................................................................26 實體類 ...........................