By the client making a request.
由客户端发出请求。
It abstracts out the creation of a thread and a handler for making a request off of the main UI thread.
它抽象出线程和处理程序的创建,用于请求主ui线程。
Much like the client from the previous example, the client from Figure 2 starts the process by making a request.
与前一个示例中的客户机一样,图2中的客户机首先发出一个请求。
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