If you want to start by getting a quick look at some code, the Hello World tutorial walks you through a standard "Hello, World" application to introduce some basics of an Android application.
如果想以快速浏览一下代码为开始，简短的Hello World辅导将通过标准的“世界，你好！”应用程序，引导您了解Android平台程序的编制情况。
Take a quick look at the initialization code in init.rb, shown in Listing 3.
快速浏览一下init . rb中的初始化代码，如清单3所示。
We'll take a quick look at the code you just imported before proceeding.
在继续进行之前，我们将快速查看一下您刚刚导入的代码。
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