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iOS fails with SWIFT_VERSION build setting must be set even after running flutter create -i swift #15

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alsocalledchris opened this issue Nov 14, 2018 · 17 comments

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@alsocalledchris
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Can't build the iOS app after adding this package to my project. Fails with SWIFT_VERSION error even though I have run the 'flutter create -i swift' command on the directory the project is in.

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.

Using Flutter 0.11.3 with latest XCode.

@ChiefRed
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Hi! I have here: Flutter 0.11.3 and XCode 10.1 (10B61)

Just have tried to create new project with -i swift and run code from InAppBrowser example: https://github.com/pichillilorenzo/flutter_inappbrowser#inappbrowser-class

And it's compiling! But fails at run browser - just killing app.

Then I'v removed all extra code from example:

import 'package:flutter/material.dart';
import 'package:flutter_inappbrowser/flutter_inappbrowser.dart';

class MyInAppBrowser extends InAppBrowser {}

MyInAppBrowser inAppBrowser = new MyInAppBrowser();

void main() => runApp(new MyApp());

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => new _MyAppState();
}

class _MyAppState extends State<MyApp> {

  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      home: new Scaffold(
        appBar: new AppBar(
          title: const Text('Flutter InAppBrowser Plugin example app'),
        ),
        body: new Center(
          child: new RaisedButton(onPressed: () async {
            await inAppBrowser.open(url: "https://flutter.io/", options: {
            });
          },
              child: Text("Open InAppBrowser")
          ),
        ),
      ),
    );
  }
}

Now it's running. And for Android too.

But my main project crying about tons of errors... Looks like I need recreate it from zero.

@alsocalledchris
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@ChiefRed interesting - I just get the swift version error unfortunately when adding to existing project - no other errors. Any ideas if there is a swift version file somewhere that I need to add/update?

@ChiefRed
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@alsocalledchris , already have tried this. But without success.

@alsocalledchris
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So, running a brand-new fresh app from scratch using the create -i swift works and compiles fine for iOS - so odd how trying to do that to an existing app fails. However I'm seeing the same crash as you @ChiefRed when trying to view a website in inAppBrowser on iOS. @pichillilorenzo any ideas - at the moment all webview flutter plugins I've tried seem to crash with the latest flutter SDK so I don't think this is an isolated problem unfortunately.

@pichillilorenzo
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flutter create -i swift is used when you create a new fresh app and not for updating one.
@ChiefRed @alsocalledchris can you post here logs/screenshots of the errors you get? Thanks!

@ChiefRed
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@pichillilorenzo, I have recreated my main project. Now it's working.
IMHO, SWIFT_VERSION error may be just unstable environment result. Then flutter clear & relaunch IDE may help.

@chuongtrh
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Try to edit Pod file. More clear at here

target 'Runner' do
  use_frameworks!  # required by simple_permission
  ...
end

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings['SWIFT_VERSION'] = '4.0'  # required by simple_permission
      config.build_settings['ENABLE_BITCODE'] = 'NO'
    end
  end
end

@ChenArno
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Me too, my xcode version is also 10.1

@Winner28
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Same problem

1 similar comment
@Sagi363
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Sagi363 commented Jan 14, 2019

Same problem

@pichillilorenzo
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@ChenArno @Winner28 @Sagi363 did you try the solution of @chuongtrh?

Try to edit Pod file. More clear at here

target 'Runner' do
  use_frameworks!  # required by simple_permission
  ...
end

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings['SWIFT_VERSION'] = '4.0'  # required by simple_permission
      config.build_settings['ENABLE_BITCODE'] = 'NO'
    end
  end
end

@Sagi363
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Sagi363 commented Jan 17, 2019

@ChenArno @Winner28 @Sagi363 did you try the solution of @chuongtrh?

Try to edit Pod file. More clear at here

target 'Runner' do
  use_frameworks!  # required by simple_permission
  ...
end

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings['SWIFT_VERSION'] = '4.0'  # required by simple_permission
      config.build_settings['ENABLE_BITCODE'] = 'NO'
    end
  end
end

It worked finally, Thank you very much!

@pichillilorenzo
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Ok! I will add this solution in the README.md file!

@alsocalledchris
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The above solution works for me - thanks everyone!

@franzejr
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I think this solution only works if you have Swift as a default language, no @pichillilorenzo @alsocalledchris ?

@horgag1
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horgag1 commented Jan 25, 2019

What worked for me was the above and then I

changed the configuration in "ios/Runner.xcodeproj/project.pbxproj":
from
VERSIONING_SYSTEM = "apple-generic";
to

SWIFT_SWIFT3_OBJC_INFERENCE=On;
SWIFT_VERSION=4.0;

There are 3 instances

@devraj-kumar devraj-kumar mentioned this issue Jul 6, 2020
5 tasks
plateaukao pushed a commit to plateaukao/flutter_inappwebview that referenced this issue Jul 27, 2020
…sign_applicationNameForUserAgent_to_WKWebViewConfiguration

TWECACAPP-709 assign applicationNameForUserAgent to WKWebViewConfiguration
@Nabouste Nabouste mentioned this issue Jul 23, 2021
5 tasks
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9 participants