主题也是一套包含一个或多个格式化属性的整体,但却应用于一个应用程序中的所有Activity,或单独一个Activity。
A theme is a set of one or more formatting attributes that you can apply as a unit to all activities in an application, or just a single activity.
文本元素与标签很相似,不过具有更多的属性:可以显示多行,格式化良好的HTML。
Text elements are similar to Labels, with the additional benefit of being able to display multi-line, highly formatted HTML.
XML描述和格式化数据,主要通过元素和属性达到此目的。
XML describes and formats data, mainly through elements and attributes.
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