How do you implement an MPVolumeView?

I want the user to be able to change the system vo开发者_高级运维lume with a slider, and I realized the only way to do this is with an MPVolumeView.

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

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

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Place it as a generic UIView, then use the inspector to set the class to MPVolumeView (ensuring that you also link the MediaPlayer framework). 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. Note that this may not work as expected in the iOS Simulator, which doesn't permit volume control.

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Use this it will automatically get it

mpVolumeViewParentView.backgroundColor = [UIColor clearColor];
MPVolumeView *myVolumeView = [[MPVolumeView alloc] initWithFrame: mpVolumeViewParentView.bounds];
[mpVolumeViewParentView addSubview: myVolumeView];
[myVolumeView release];

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In iOS 13 this has changed. Adding a slider in IB with its class set to MPVolumeView doesn't work anymore. So the accepted answer no longer works. The right way, as outlined in the Apple docs, is to use a UIView in IB and then in code add the MPVolumeView as a subview. Here's how in Swift:

// myVolumeViewParentView is the UIView you put in IB
let myVolumeView = MPVolumeView(frame: myVolumeViewParentView.bounds)
myVolumeViewParentView.addSubview(myVolumeView)

This method works in iOS 12 too.