Android SDK R17

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我是靠谱客的博主忐忑斑马，最近开发中收集的这篇文章主要介绍Android SDK R17 ，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

最近發現SDK 可以更新, 主要是改善虛擬機效能問題. 對於Android 平台來說是一個很重要的更新.

因為用戶的Android 種類太多囧rz 所以常常要用到虛擬機....

這邊是官方的資料 :

General notes:

Emulator
- Added support for hardware accelerated graphics rendering. This feature requires an API Level 15, Revision 3 or later system image. (more info)
  Note: As of the SDK Tools Revision 17 release, the API Level 15, Revision 3 system image is not yet available.
- Added support for running Android x86 system images in virtualization mode on Windows and Mac OS X. (more info)
- Added experimental support for multi-touch input by enabing the emulator to receive touch input from a USB-tethered physical Android device. (more info)
Added viewing of live detailed network usage of an app in DDMS. (more info)
ProGuard
- Updated the bundled ProGuard tool to version 4.7. In addition to many new features, this update fixes the Conversion to Dalvik format failed with error 1 error some users have experienced.
- Updated the default proguard.cfg file with better default flags for Android.
- Split the ProGuard configuration file has been in half, with project specific flags kept in project and the generic Android flags distributed (and updated) with the tools themselves.
Build
- Added a feature that allows you to run some code only in debug mode. Builds now generate a class called BuildConfig containing a DEBUGconstant that is automatically set according to your build type. You can check the (BuildConfig.DEBUG) constant in your code to run debug-only functions.
- Fixed issue when a project and its libraries include the same jar file in their libs folder. (more info)
- Added support for custom views with custom attributes in libraries. Layouts using custom attributes must use the namespace URIhttp://schemas.android.com/apk/res-auto instead of the URI that includes the app package name. This URI is replaced with the app specific one at build time.
Lint
- Updated Lint to check Android application code. Lint rules which previously performed pattern based searches in the application code (such as the unused resource check) have been rewritten to use the more accurate Java-style parse trees.
- Added support for checking library projects. This change means that rules such as the unused resource check properly handle resources declared in a library project and referenced in a downstream project.
- Added ability to suppress Lint warnings in Java code with the new @SuppressLint annotation, and in XML files with the new tools: namespace and ignore attribute. (more info)
- New Lint checks:
  - Added check for Android API calls that require a version of Android higher than the minimum supported version. You can use the new@TargetApi annotation to suppress warnings when the code is wrapped in a system version condition. (more info)
  - Added over 20 new Lint rules, including checks for performance, XML layouts, manifest and file handling.