There is a sample project file attached to this article, called ProgressBarSample.zip.

这篇文章附有一个范例项目文件，称作 ProgressBarSample.zip。

youdao

Edit: Here's a link to a sample project that demonstrates the problem.

编辑：这里有一个链接到一个示例项目，演示了这个问题。

youdao

Edit: Here's a link to a sample project that demonstrates the problem.

编辑：这里有一个链接到一个示例项目，演示了这个问题。

youdao