以下步骤假定您已经进行了本文中前一部分中的步骤，创建了此应用程序，或已经导入了已经完成的项目交换文件。
The following steps assume you have either followed the steps in this article to create the application in the previous section or imported the completed project interchange file.
该系列文章中包含的项目交换文件，允许您在准备好应用程序进行迭代开发之前，先熟悉环境配置。
A project interchange file is included with this article series will to allow you to become familiar with the environment configuration before your application is ready for iterative development.
在开始练习之前，您需要下载并导入包含示例应用程序的项目交换文件。
Before you start the exercise, you need to download and import the project interchange file that contains the sample application.
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