Performance of SwiftUI List

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Created Aug ’24

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Hello, I'am new to SwiftUI development and have a question about performance improvements for using the SwiftUI List. I basically have a NavigationSplitView, on the left side is a list with around 17.000 entries and on the right side is a detail view showing a chart. While scrolling through the list is ok, when I select an item to show the details I have a hang around 1-2 seconds. I don't know how to exactly improve performance so that the detail data appears instantly. Any help is welcome, here's the UI code:

Bildschirmfoto 2024-08-05 um 09.40.12.png

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Answer 1

Claude31 OP

Aug ’24

Could you show the exact code of LogDetail(log:)

To check if it is the issue, test with the following change:

1og in
  NavigationLink(destination: Text("same destination"))

I found this article that shows the problem is common with large listes: https://fatbobman.com/en/posts/optimize_the_response_efficiency_of_list/

Hope you will find solution in it.

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Answer 2

ErichK OP

Aug ’24

Hello @Claude31 Thanks for the reply! I replaced the NavigationLink as you suggested, but I still have the 1-2 seconds hang. Also replacing the LogRow with a simple Text rending does not help. It always happens when I select something in the list. I'll check the link that you posted :-)

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