iOS Audio Unit Preferences

Media Technologies Audio
Brambos OP
Created May ’16
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Question about iOS AU design best practices...


Does Apple recommend using the standard iOS Preference Settings design pattern for Audio Units?

Example: if I'd want to implement a global setting "ignore midi velocity" for my plugin extension, can and should I use the preferences section of iOS for this?


Thanks!

Answered by Brambos in 139044022

It seems (upon actually trying) that using a Settings Bundle with an Audio Unit Extension doesn't work in the first place.

I guess that answers the question, unless I'm missing something.


EDIT: scratch that. It *is* possible, but the way to do it is exceedingly obscure and virtually undocumented.


- Access to the settings.bundle needs to be initialized using App Groups, with [[NSUserDefaults alloc] initWithSuiteName:] rather than [NSUserDefaults standardUserDefaults]

- Here's the part that no tutorial mentions: you MUST add the key "ApplicationGroupContainerIdentifier" to the root.plist of your settings bundle for this to work.


I hope this helps someone.

Replies  1
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Views  501
Participants  1
Brambos OP
May ’16
Accepted Answer

It seems (upon actually trying) that using a Settings Bundle with an Audio Unit Extension doesn't work in the first place.

I guess that answers the question, unless I'm missing something.


EDIT: scratch that. It *is* possible, but the way to do it is exceedingly obscure and virtually undocumented.


- Access to the settings.bundle needs to be initialized using App Groups, with [[NSUserDefaults alloc] initWithSuiteName:] rather than [NSUserDefaults standardUserDefaults]

- Here's the part that no tutorial mentions: you MUST add the key "ApplicationGroupContainerIdentifier" to the root.plist of your settings bundle for this to work.


I hope this helps someone.

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