如何创建定制的BlackBerryUIField作者：杨江http://www.yao99.comhttp://www.yao99.com目录如何创建定制的BlackBerryUIField...........................................................................................................1目录..........................................................................................................................................................2一概述......................................................................................................................................................3二BlackBerryUIField..............................................................................................................................3三创建定制的UIField的方法...............................................................................................................33.1HyperlinkButtonField......................................................................................................................43.2BitmapButtonField和MediaControlStyleField..............................................................................83.3ProgressAnimationField................................................................................................................10小结........................................................................................................................................................12参考........................................................................................................................................................12http://www.yao99.com一概述BlackBerry平台为开发人员提供了很多标准的UI组件，为程序员快速开发手机应用奠定了基础。但大量手机软件是消费类、娱乐类软件，这些软件的UI界面需要独特、于众不同，能抓住用户的眼球。标准的UI组件经常不能满足开发商和用户的独特要求，很多时候开发人员需要发挥其想象力去创造和定制出新的UI组件。所幸BlackBerry平台上面创建定制的UI组件是一件比较简单的事情。二BlackBerryUIField从BlackBerryAPIJavadoc中我们看到，我们常用的UI组件，即Field，比如文本框ButtonField、LabelField、TextField等等都是扩展net.rim.device.api.ui.Field而来。更高级的BlackBerryUI组件，比如管理器Manager和窗口Screen也是继承Field类。三创建定制的UIField的方法创建自定义字段，编写一个Field，通