All Views double loading in List/NavigationLink on iOS14, MAJOR BUG

Question

Created Jul ’20

Replies 4

Boosts 0

Views 1.8k

Participants 5

Why is the following code causing views to load twice on iOS 14? This does not happen on iOS 13.6.

The same code compiled on either Xcode 12 Beta 3 or Xcode 11.6 runs differently on iOS 14.

iOS 14 is causing all Views to load twice when placed in a List with NavigationLink.

This issue is doubling our network traffic.

The following code example will demonstrate:

Code Block import SwiftUI
struct ContentView: View {
		var body: some View {
				NavigationView {
						List(){
								NavigationLink( destination: DetailView()){
										Text("DetailView")
								}
						}
				}
		}
}
struct DetailView: View {
		 var body: some View {
					 VStack {
							 logView("View loaded")
							 Text("Hello, world!")
					 }
			 }
			 
			 func logView( _ message: String) -> AnyView {
					 print("\(message)")
					 return AnyView(EmptyView())
			 }
}

Boost

Answer 1

WunDaii OP

Aug ’20

I’m seeing the same issue, still present on beta 4.

0

Answer 2

tapitapps OP

Aug ’20

I don't know if this is any help, but I had a similar issue with double log messages and my List highlighting the wrong rows.

It worked fine on-device and it turned out it was a simulator issue. I deleted the simulator I was using and re-created it, worked fine ever since.

I don't know if this is the same issue you are having, it would be worth running it up on device to see if you have the same issue.

0

Answer 3

tuuky OP

Aug ’20

I'm seeing this same issue (List in NavigationView) with iOS 13.6 devices as well

0

Answer 4

Orsai OP

Oct ’20

Same problem here. Any ideas why this is going on?

0