SwiftUI - Debug Preview not working in Xcode 12 beta 2?

UI Frameworks SwiftUI
mprogers OP
Created Jul ’20
Replies 22
Boosts 0
Views 7.9k
Participants 22
Nothing prints to the console when I tap on a button, although the debugger will break on the print() lines. I've chosen Debug Preview rather than just Live Preview in the Canvas, and I've tried restarting Xcode. Before I file feedback, is anyone else seeing this?

Code Block struct ContentView: View {
    var body: some View {
        VStack(alignment: .leading){
            Button("One Fish"){
                print("One")
            }
            Button("Two fish"){
                print("Two")
            }
        }
    }
}



Replies  22
Boosts  0
Views  7.9k
Participants  22
Beanstalk OP
Jul ’20
Yes, I've noticed the same issue with Xcode 12 beta 2.
The break point works, but when I query objects using po, no response is returned.

Code Block 
(lldb) po self 
(lldb) po datePickerView
(lldb) 


0
CypherPoet OP
Aug ’20
Similar issue in Xcode 12 Beta 5 on MacOS 10.15.5: Breakpoints get hit, po returns responses, but print never seems to output anything.
1
roberto147 OP
Oct ’20
I'm seeing the same problem
0
matan_zoog OP
Oct ’20
same issue in Xcode 12.0.1 . breakpoint hits but nothing is printed to console
0
Cifer OP
Oct ’20
Same issue to me. Xcode 12.1 , macOS 10.15.5
0
proxima OP
Oct ’20
More or less the same thing, except the actions fail completely from the playground, but with preview on the device, I can hit breakpoints in the action, print out stuff to the console. Somewhat the same on the simulator, but not in the standard Preview pane.
0
jcsesia OP
Oct ’20
Same issue
Xcode 12.1 , macOS 10.15.7
0
klongmitre OP
Oct ’20
Same issue for me with 12.1 (12A7403)
0
FrogLegg OP
Nov ’20
Same issue as well, Xcode 12.1, Mac OS 10.15.6
0
VyomDev OP
Nov ’20
Did anyone got the solution of this? Seems it is issue with Xcode 12 or may be there is some setting. Please reply if anyone has a solution for this. In my case preview of po print() at console is not working & also the breakpoints are also not working smoothly.
0
CuriaDamiano OP
Dec ’20
I have the same issue with XCode 12.3
1
v_gorlov OP
Jan ’21
Same issue with XCode 12.3 (12C33). At last I can "print" with debugger breakpoints.
1
chaimp OP
Jan ’21
happening for me too
0
Boulomiel OP
Jan ’21
Same issue here xCode 12.3, mac os 11.1, M1
0
Hzen OP
Feb ’21
This bug seems still to exist.

  • xcode 12.4,

  • mac os 11.2.1,

does anyone has a solution?
0
SwiftUI - Debug Preview not working in Xcode 12 beta 2?
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