轉載於:http://www.jacken.com.cn/android-os.yy/
Android－－－什麼玩意？
是Google的玩意，Google拿它來玩什麼？Is An Open Handset Alliance Project—-手機操作系統.
Android比其他手機操作系統有什麼更牛的地方？
Android Architecture:
- 一、Android是開源的.Android allows you to access core mobile device functionality through standard API calls.
- 二、Android不單純只是操作系統. Linux Kernel:Android relies on Linux version 2.6 for core system services such as security, memory management, process management, network stack, and driver model. The kernel also acts as an abstraction layer between the hardware and the rest of the software stack. Android Runtime:The Dalvik VM,有了Java虛擬機,大部分Java核心類庫都已經可以直接運行. Libraries:Android includes a set of C/C++ libraries used by various components of the Android system. These capabilities are exposed to developers through the Android application framework. Some of the core libraries are listed below:System C library ,Media Libraries ,Surface Manager ,LibWebCore ,SGL , ,3D libraries ,FreeType ,SQLite. Fast & easy development:The SDK contains what you need to build and run Android applications, including a true device emulator and advanced debugging tools.Google提供了基於Eclipse的完整開發環境,模擬器,文檔,幫助,示例.
- 三、圍繞Android形成了一個移動手機聯盟 .
一些問題值得思考：
- Android是用Java來開發應用的.
- Java ME前景如何?
- 應該現在開始學習Android嗎?
視頻: