你如何实现MPVolumeView？ [英] How do you implement an MPVolumeView?

问题描述

我希望用户能够使用滑块更改系统音量，我意识到执行此操作的唯一方法是使用MPVolumeView。

I want the user to be able to change the system volume with a slider, and I realized the only way to do this is with an MPVolumeView.

但是我找不到任何示例代码，我尝试实现的每个方法都不会显示出来。

But I can't find any example code for it, and every method I try to implement won't show up.

那么最简单，最正确的工作方式是什么？ MPVolumeView？

So what is the easiest and correct, working way of implementing a MPVolumeView?

推荐答案

将其作为常规滑块放置，然后使用检查器将类设置为 MPVolumeView 。它仍将在IB中显示为常规滑块，但在运行时，它将是 MPVolumeView 的实例，并且将具有必要的样式和行为。

Place it as a regular slider, then use the inspector to set the class to MPVolumeView. It'll still be shown as a regular slider in IB, but at runtime, it will be an instance of MPVolumeView and will have the necessary styles and behavior.

这篇关于你如何实现MPVolumeView？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！