Flutter ios build fails in xcode 10.1 with swift_version

Question

I'm building a flutter app. everyting worked just fine. Then I think dart was upgraded and suddenly the build of the app fails with this error:

The “Swift Language Version” (SWIFT_VERSION) build setting must be set to a supported value for targets which use Swift. Supported values are: 3.0, 4.0, 4.2. This setting can be set in the build settings editor.

I don't see the setting in xcode and not sure what caused this error. Anyone else seen it?

Okay I figured out this appeared after adding this package geolocator: ^2.1.1 removing it also removes the error — Rasmus Christensen
– Rasmus Christensen, Commented Dec 6, 2018 at 9:51
This fixed the issue github.com/BaseflowIT/flutter-geolocator/issues/145 — Rasmus Christensen
– Rasmus Christensen, Commented Dec 6, 2018 at 10:52

score 5 · Accepted Answer · 2018-12-10 06:05:19Z

For anyone else looking for the solution. You need to have XCode version higher than 10.0 before you can use Swift 4.2.

Open your podfile and make the following changes

target 'Runner' do use_frameworks! # <---- // 1st add this right below above line ... end post_install do |installer| installer.pods_project.targets.each do |target| target.build_configurations.each do |config| config.build_settings['ENABLE_BITCODE'] = 'NO' config.build_settings['SWIFT_VERSION'] = '4.2' # <--- // 2nd add this end end end

After this, in terminal use flutter run. More info

Collectives™ on Stack Overflow

Flutter ios build fails in xcode 10.1 with swift_version

1 Answer 1

1 Comment

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Related