Android SDK 4.0 發布下載

隨著 Android 4.0 的發布，4.0 的開發包也同時發布，下載地址：

http://developer.android.com/sdk/android-4.0.html

新的SDK支持移動數據控制、面部識別、高分辨率圖像、增強共享等功能。

Android是谷歌(Google)公司推出的手機開發平臺。

與iPhone相似，Android采用WebKit瀏覽器引擎，具備觸摸屏、高級圖形顯示和上網功能，用戶能夠在手機上查看電子郵件、搜索網址和觀看視頻節目等，比iPhone等其他手機更強調搜索功能，界面更強大，可以說是一種融入全部Web應用的單一平臺，下圖是 Android 手機平臺開發工具包說提供的模擬器界面截圖：

但其最震撼人心之處在于Android手機系統的開放性和服務免費。Android是一個對第三方軟件完全開放的平臺，開發者在為其開發程序時 擁有更大的自由度，突破了iPhone等只能添加為數不多的固定軟件的枷鎖；同時與Windows Mobile、Symbian等廠商不同，Android操作系統免費向開發人員提供，這樣可節省近三成成本。

Android項目目前正在從手機運營商、手機廠商、開發者和消費者那里獲得大力支持。谷歌移動平臺主管安迪·魯賓(Andy Rubin)表示，與軟件開發合作伙伴的密切接觸正在進行中。從去年11月開始，谷歌開始向服務提供商、芯片廠商和手機銷售商提供Android平臺，并 組建“開放手機聯盟”，其成員超過30家。

詳細信息請參看：

Android 4.0 is a major platform release that adds a variety of new features for users and app developers. Besides all the new features and APIs discussed below, Android 4.0 is an important platform release because it brings the extensive set of APIs and Holographic themes from Android 3.x to smaller screens. As an app developer, you now have a single platform and unified API framework that enables you to develop and publish your application with a single APK that provides an optimized user experience for handsets, tablets, and more, when running the same version of Android—Android 4.0 (API level 14) or greater.

The Android 4.0 platform is available as a downloadable component for the Android SDK so you can begin developing and testing your applications on Android 4.0 with the Android emulator. The downloadable platform includes an Android library and system image, as well as a set of emulator skins and more. The downloadable platform does not include any external libraries.

To start developing or testing against Android 4.0, use the Android SDK Manager to download the platform into your SDK. For more information, see Adding SDK Components. If you are new to Android, download the SDK Starter Package first.

Reminder: If you've already published an Android application, please test your application on Android 4.0 as soon as possible to be sure your application provides the best experience possible on the latest Android-powered devices.

For a high-level overview of the new user and developer features in Android 4.0, see the Platform Highlights.