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【正文】 and realization of the application . Android is an open source system, it is based on the Linux operating system, the music player of the paper adopt the Android opensource system technology and take advantage of the Java language and editing tools to Eclipse players. Simultaneously, it gives the detailed design process, the part of the system and the main functions of operation interface diagram of height, the paper has detailed discussions about problems and solving methods in flow process, the music player covers episode, pause, stop, up, next, volume adjustment and lyrics display functions etc, because of good performance, it can operate independently in the Android system. This player has access to the file browser phone functions, songs and played pattern, open and close condition of friendly words. The full name of MP3 is MPEG Audio Layer 3 and a kind of sound files pressed format. Because the players is only limited to the exploration of applied program, it doesn’t study the specific pression algorithm. Key Words： Android 。 Open source system 。 music player III 目 錄 摘要 ............................................................................................................................................. I 術 語 表 ....................................................................................................................................V 1 概述 ........................................................................................................................................ 1 課題的背景和意義 ...................................................................................................... 1 課題的研究歷史和發(fā)展現狀 ...................................................................................... 1 課題研究的主要內容 .................................................................................................. 2 方案的原理、特點與選擇依據 ................................................................................. 3 2 系統(tǒng)需求分析 ........................................................................................................................ 3 可行性分析 .................................................................................................................. 3 經濟可行性分析 .............................................................................................. 3 技術可行性分析 .............................................................................................. 3 社會可行性分析 .............................................................................................. 3 系統(tǒng)需求分析 .............................................................................................................. 4 功能需求 ........................................................................................................... 4 界面需求 ........................................................................................................... 4 性能需求 ........................................................................................................... 4 可靠性要求 ...................................................................................................... 4 運行環(huán)境需求 ................................................................................................... 4 3 總體設計 ................................................................................................................................ 5 系統(tǒng)結構設計和流程設計 ......................................................................................... 5 音樂播放器的系統(tǒng)流程設計 ........................................................................... 5 系統(tǒng)功能設計和系統(tǒng)功能結構設計 ............................................................... 6 Android 數據庫設計 .................................................................................................... 7 字段設計 .......................................................................................................... 8 SQLiteDatabase 數據庫 .................................................................................... 9 4 Android 項目 ......................................................................................................................... 10 Android 簡介 .............................................................................................................. 10 Android Features 特性 .................................................................................... 10 Android 基本框架 ........................................................................................... 11 Android 系統(tǒng)的四大組件 ............................................................................... 12 搭建 Android 開發(fā)環(huán)境 ............................................................................................ 13 安裝 Java JDK................................................................................................. 13 安裝 SDK 模擬器 .......................................................................................... 14 手機模擬器安裝軟件 .................................................................................... 15 管理 SD 卡文件 ............................................................................................. 16 Android 音樂播放器的工程 ..................................................................................... 17 Android 項目 ................................................................................................... 17 Android 工程程序結構 ................................................................................... 17 文件 ............................................................................. 19 5 播放器系統(tǒng)功能詳細設計 .................................................................................................. 21 音樂播放器主界面功能實現 .................................................................................... 21 播放器主界面 ................................................................................................ 21 IV 播放界面音軌的實現 .................................................................................... 22 播放器播放、暫停、停止等功能 ................................................................ 24