The new captureTextFromCamera API allow device to use OCR in UIResponder,but how can I know this device support OCR or not ? eg: iPhoneX:NO, iPhone13:YES

I want to get animation interpolation during animation running. just like code below: Animator(begin:100,end:200).addListener({value in //here will be called when animation updates. print(value) }) But I can't find any API like the code above in iOS SDK.And I don't want to use any UIView or CALayer to get presentationLayer to get this value. So How can I do that?🤔🤔🤔

The GarageBand app can import both midi and recorded audio file into a single player to play. Just like this: My App have the same feature but I don't know how to implement it. I have tried the AVAudioSequencer,but it only can load and play MIDI file. I have tried the AVPlayer and AVPlayerItem,but it seems that it can't load the MIDI file. So How to combine MIDI file and audio file into a single AVPlayerItem or anything else to play?

As title desc. Before iOS 16.6 is smooth. But iOS 16.6 is lagging. Seems iOS 17 beta4 is ok.. Maybe Apple should post a hotfix for iOS 16.6