An Android application may be launched to process a element of data or respond to an event, such as the receipt of a text message.

Android应用程序可用于处理一个数据元素，或者对一个事件(例如接收文本消息)做出响应。

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For example, say you have a search text box and a button that performs a search of your site using the XMLHttpRequest described in this section, with no element used in the process.

例如，假如您拥有一个文本框和一个按钮，它们使用本节中描述的XMLHttpRequest来搜索您的站点，搜索过程不会使用元素。

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