error: SWIFT_VERSION '5.0' is unsupported, supported versions are: 3.0, 4.0, 4.2. (in target 'Starscream')

问题

Steps to recreate

$ vue init nativescript-vue/vue-cli-template transport
$ cd transport
$ npm install
$ tns run ios --bundle

Log error:

error: SWIFT_VERSION '5.0' is unsupported, supported versions are: 3.0, 4.0, 4.2. (in target 'Starscream')
note: Using new build systemnote: Planning buildnote: Constructing build description
** ARCHIVE FAILED **

Mac OS High Sierra 10.13.6 Darwin Aerosol.local 17.7.0 Darwin Kernel Version 17.7.0: Wed Feb 27 00:43:23 PST 2019; root:xnu-4570.71.35~1/RELEASE_X86_64 x86_64

node -v v11.7.0 npm -v 6.9.0 vue -v 3.6.3

I was able to create new apps and run them on my iOS devices but for some reason things have changed last 1-2 week. It looks like I can not develop NativeScript apps anymore. Any hints?

回答1:

if you have problems with SWIFT_VERSION on the build you can configure manually it adding a PodFile to your project (App_Resources/iOS) setting the version you want, something like this in the PodFile should solve your problem

pre_install 
do |installer|
    installer.analysis_result.specifications.each 
    do |s|
        if s.name == 'Starscream'
            s.swift_version = '4.2'
        end
    end
end

I wish this can help you

Sorry man, I make a mistake in... this is the correct PodFile

pre_install do |installer|
    installer.analysis_result.specifications.each do |s|
        if s.name == 'Starscream'
            s.swift_version = '4.2'
        end
    end
end

回答2:

The last time I had issues with Swift versions an Pods, downgrading cocoapodsfrom 1.6.x to 1.5 resolved the issue:

    sudo gem uninstall cocoapods
    sudo gem install cocoapods -v 1.5.3

Looking at the release notes for cocoapods1.6 back in march showed some changes regarding this.

The error messages were different, though but it might be worth a try.

回答3:

I just realized that I do not have to start native app creation using vue init, ie

$ vue init nativescript-vue/vue-cli-template transport

but with tns create there is no problem at all, I can choose Vuejs without downloading template via vue

$ tns create myapp

回答4:

I performed a very simple solution and it worked like wonder.

Click on the project you intend to build under Project Navigator.
Click on Build Settings -> Combined in General Setting pane.
Change to the desired version from drop down under 'Swift Language Version'
Build the project again. Voila !!!

Screen shot of the image

来源：https://stackoverflow.com/questions/56432520/error-swift-version-5-0-is-unsupported-supported-versions-are-3-0-4-0-4-2

标签

Vue.js

nativescript