android API 版本升级差异归纳

一.============ 2.1API 新特性 ===================

1.Revisions:

Dependencies:

Requires SDK Tools r6 or higher.

Tools:

• Adds support for library projects in the Ant build system.
• Adds improved layout rendering in ADT’s visual layout editor

2.Framework API Changes

动态壁纸.

The following additions provide APIs for you to develop animated wallpapers:

• New android.service.wallpaper package.
• New WallpaperInfo class.
• Updated WallpaperManager.  

Add <uses-feature android:name="android.software.live_wallpaper" /> to appliction manifest.xml .

Telephony

• New SignalStrength class provides information about the device's current network signal. This can be acquired from the new onSignalStrengthsChanged(SignalStrength) callback.
• New onDataConnectionStateChanged(int, int) callback. 

Views

• New View methods isOpaque() and onDrawScrollBars(Canvas).
• New RemoteViews methods addView(int, RemoteViews) and removeAllViews(int).
• New ViewGroup methods isChildrenDrawingOrderEnabled() and setChildrenDrawingOrderEnabled(boolean).  

WebKit

• New WebStorage methods to manipulate web storage databases.
• New GeolocationPermissions methods to get Geolocation permissions from, and set them on the WebView.
• New WebSettings methods to manage settings for app cache, web storage, and zooming based on screen density.
• New WebChromeClient methods for handling video, browsing history, custom Views, app cache limits, and more

二: ================ android 2.2 新特性 ============================

1.软件安装位置添加属性 AUTO

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.control"
      android:versionCode="1"
      android:versionName="1.0"
      android:installLocation=["auto"|"interalOnly"|"preferExternal" ]>//interalOnly为安装到内存,preferExternal为安装到SD卡.fi

2.match_parent 属性取代  fill_parent.

3.新增程序数据备份至云端功能. extends BackupAgent