Hi everyone, can someone help me with how to "override `layoutSubviews` of the interop `UIView` " as...

# ios

[patrickdelconte]

Hi everyone, can someone help me with how to "override layoutSubviews of the interop UIView " as written here?
https://www.jetbrains.com/help/kotlin-multiplatform-dev/compose-ios-migration.html#onresize-parameter-removed
I'm a bit at a loss here, something like object: UIView() { override fun layoutSubviews(){ /* */ } } just leads to a compiler error

[Andrei Salavei]

just create

class MyCustomView: UIView() {
    override fun layoutSubview() { ... }
}

[Andrei Salavei]

May I ask, why do you need to perform manual layout?

[patrickdelconte]

I don't specifically want to do manual layout. I just hoped it would solve this issue: https://youtrack.jetbrains.com/issue/CMP-7095/blank-camera-preview-screen-with-UIKitView-and-AVCaptureVideoPreviewLayer

[Andrei Salavei]

Yep, you need to create a custom view to manage the AVCaptureVideoPreviewLayer

[patrickdelconte]

should I create a bugreport for the compilation error with anonymous object subclassing? or is that expected?

[Andrei Salavei]

The error you're talking about is Unable to call non-designated initializer as super constructor is a limitation of Obj-C. You should always override all designated constructors. So the fix will be like:
object: UIView(frame = CGRectZero.readValue()) { override fun layoutSubviews(){ /* */ } }

[patrickdelconte]

yes, that worked 🚀 Thanks a lot for your help!

[patrickdelconte]

I created a MR to fix the example https://github.com/JetBrains/compose-multiplatform/pull/5166