Missing/Broken features in SwiftUI [List]

Question

Created Jun ’19

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Hi guys, as many of you (I think), I have been busy learning SwiftUI as fast as I can. In my case for a new app I want to develop for personal purposes and probably for an App Store release.

In my (small) learning journey I have found a few things that SwiftUI is missing or just not working, but since there is not too much information yet I wanted to make a simple thread with all the things I have found at the moment. This can be useful for anyone who is learning SwiftUI or wants to check current SwiftUI status.

I promise to add my findings here and update this post as fast as I can.

Feel free to mention every feature you think is important to have in the list, any features you think is not a bug or broken/missing feature, or any solution you may find to one of this mentioned problems.

Ps: I know we have Xcode release notes but many of the current bugs of SwiftUI are not mentioned there.

SwiftUI missing/broken features (as of beta 3):

Can’t remove rows separator from List
Can’t push or pop without navigationView
Can’t display a modal in full screen (only in the new style)
No dismiss modal programatically available (environment safe keypath maybe is the correct solution?)
Custom Fonts are sometimes not rendered correctly on Xcode Previews (A little bit fixed in Beta 3 but still buggy)
Code Completion in some places is not working (haven’t found a specific way to reproduce the bug consistently but definitely happens)
Pinch to Zoom is not working in Xcode Previews
Switching between files that have or not have a cambas may cause the cambas to remain open
No way to remove the accessory item of a navigationLink inside a List
Cant hide navigation bar from NavigationView (There is a new modifier called navigationBarHidden but when the next view is pushed, the navigationBar returns. The modifier only works for the first view not pushed ones)
Cant add a custom navigation bar to NavigationView
Colors in foregroundColor modifier are not updating in Previews correctly. Sometimes they work but most of the time is the same black color (Working better in beta 3 but some objects including navigationView are still having problems)
TextFields do not have a way of setting their keyboard type.
TextFields do not have the equivalent of UIKit beginFirstResponder and resignFirstResponder. That means there is no way of programatically setting or removing the focus from a text field.
SecureField does not have a way of knowing when the field became active, or inactive (TextField does have onEditChange, but SecureField does not).
Popovers as of beta3 seem to be broken.
Slider seems broken in Beta 3. No longer increment by Stride
.onAppear and .onDisappear are not firing during navigation transitions
TextFields are not resized properly when multiline text is used

Solved problems

Forms are not available (Now available in Beta 2)
Published property wrapper is not fully functional (Available since Beta 2 in Xcode projects. Playgrounds not working)
Colors added directly to the xcassets are not working in dark mode (Working in beta 3)
LaunchScreen is sometimes stuck with old layouts (happens to me only in SwiftUI projects sometimes) (Working in Beta 3)
There is no simple way to change the main view background color (Use background modifier, see answer 3)

Boost

Answer 1

fractal OP

Jul ’20

Looks like just about anything inside a sheet on macOS doesn't layout correctly. For example:

Code Block .sheet(...) {
		 NavigationView {
            Form {
                Section() {
                    TextField("Name", text: $name)
                }
                Section(header: Text("Title")) {
                        TextField("Address", text: $address)          
								}
       			}
      }.navigationTitle("New Item")
}

Looks great on iOS but on macOS has clipped controls, incorrect margines, sections running together with no/incorrect padding, etc.

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