podspec should specify a spec.swift_version

[xster]

Otherwise, installing into objective-c projects might make wild version guesses and not build.

[alamboley]

Hey, got the problem here The “Swift Language Version” (SWIFT_VERSION) build setting must be set to a supported value for targets which use Swift. This setting can be set in the build settings editor.
How did you fix it?

[alamboley]

I fixed it this way:
Press the + button in Build Settings and select Add User-Defined Setting.
Then in the new row created add SWIFT_VERSION as key and 3.2 as value.

[JackAppDev]

I added something to the podspec for the plugin. Let me know if that fixes it.

[alamboley]

@JackAppDev having this issue now:

Could not build the precompiled application for the device.
=== BUILD TARGET firebase_database OF PROJECT Pods WITH CONFIGURATION Debug ===
:1:9: note: in file included from :1:
#import "flutter_iap-umbrella.h"
^
/Users/aymeric/Documents/Workspace/Flutter/InstaBoost/insta_boost/ios/Pods/Headers/Public/flutter_iap/flutter_iap-umbrella.h:13:9: note: in file included from /Users/aymeric/Documents/Workspace/Flutter/InstaBoost/insta_boost/ios/Pods/Headers/Public/flutter_iap/flutter_iap-umbrella.h:13:
#import "FlutterIapPlugin.h"
^
/Users/aymeric/Documents/Workspace/Flutter/InstaBoost/insta_boost/ios/Pods/Headers/Public/flutter_iap/FlutterIapPlugin.h:1:9: error: 'Flutter/Flutter.h' file not found
#import <Flutter/Flutter.h>
^
:0: error: could not build Objective-C module 'flutter_iap'
:1:9: note: in file included from :1:
#import "flutter_iap-umbrella.h"
^
/Users/aymeric/Documents/Workspace/Flutter/InstaBoost/insta_boost/ios/Pods/Headers/Public/flutter_iap/flutter_iap-umbrella.h:13:9: note: in file included from /Users/aymeric/Documents/Workspace/Flutter/InstaBoost/insta_boost/ios/Pods/Headers/Public/flutter_iap/flutter_iap-umbrella.h:13:
#import "FlutterIapPlugin.h"
^
/Users/aymeric/Documents/Workspace/Flutter/InstaBoost/insta_boost/ios/Pods/Headers/Public/flutter_iap/FlutterIapPlugin.h:1:9: error: 'Flutter/Flutter.h' file not found
#import <Flutter/Flutter.h>
^
:0: error: could not build Objective-C module 'flutter_iap'

Error launching application on Aymeric’s iPhone 6S.