swiftUI preview does not open

UI Frameworks SwiftUI
seiichi OP
Created Apr ’21
Replies 1
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Views 2.5k
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I was studying swiftUI at SwiftUI Tutorials.

On the way, the preview of swiftUI is in a state where the preview does not open with the error "cannot preview in this file --Failed to install".

open the Diagnostics

FailedToInstallAppError: Failed to install "appname.app"
Could not install the preview host "appname.app" on iphone8

I get the error

I created a new project and tried it, but I get the same error.

Did the settings change?

I would like advice on how to deal with it.
Replies  1
Boosts  0
Views  2.5k
Participants  2
seiichi OP
Apr ’21
The problem has been solved.

  1. Deleted the ”user name\Library\Developer\Xcode\ProductName...” folder.

  2. Launch the project file again.

2
swiftUI preview does not open
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