How to print into the console in SwiftUI?

Luko · January 15, 2021, 8:04pm

Hi guys! Can you help me about this? Thanks

amritpan · January 15, 2021, 9:02pm

You'll need to turn on Debug Preview: right-click on the live preview play button and select "Debug Preview" from the popup.

Luko · January 16, 2021, 1:50pm

Thanks Amritpan, I have Xcode 12.1 and this feature don´t work. It seems is a Xcode bug.
https://developer.apple.com/forums/thread/654334

Luko · January 18, 2021, 4:49pm

There are a Xcode bug when I try this...

young · January 18, 2021, 5:29pm

Debug preview doesn't show print in console. I run in the simulator or device.

ratranqu · January 18, 2021, 5:49pm

This might be helpful: Building SwiftUI debugging utilities | Swift by Sundell

Luko · January 18, 2021, 6:42pm

Thanks!

DandyLyons · April 10, 2021, 2:53am

I have the same problem as @Luko . My Xcode 12 still won't print, even in Debug Preview mode, and even when I use the tips from Building SwiftUI debugging utilities | Swift by Sundell

Print isn't even working for me when I'm running from the simulator, which is weird because it used to work before for me.

BrentM · October 13, 2021, 11:02pm

Has anyone ever got this feature working? I’ve never been able to debug previews.

Jon_Shier · October 13, 2021, 11:07pm

They seem to have removed easy preview debugging in Xcode 13 for some reason. Now they say to attach to the preview process manually from Xcode. Haven’t tried it but it worked in Xcode 12, usually.

young · October 14, 2021, 12:02am

Debug preview is gone: Debug Previews | Apple Developer Forums

How to do this?

I just run in simulator or device

BrentM · October 14, 2021, 12:30am

Yea every time I tried in Xcode 12 it just fails to attach.

Same thing happens with the view debugger in storyboards.