Compilation errors on iOS (new version of Swift compiler?)

[alexg313]

Hi,

I'm using 1.0.1 version of the plugin. After following the tutorial and trying to deploy it on an iPhone XR simulator, I get these errors: "cannot use optional chaining on non-optional value of type 'Branch'"

I'm unsure how nullability and optionals work between Obj-C and Swift, but Branch.getInstance returns a pointer (could be nullable), but obviously Swift thinks it's a non-optional. Any proposed solutions?

See below.

/Users/Mark/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_branch_io_plugin-1.0.1/ios/Classes/SwiftFlutterBranchIoPlugin.swift:103:29: error: cannot use optional chaining on non-optional value of type 'Branch' Branch.getInstance()?.setIdentity(userId) ~~~~~~~~~~~~~~~~~~~~^ /Users/Mark/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_branch_io_plugin-1.0.1/ios/Classes/SwiftFlutterBranchIoPlugin.swift:107:29: error: cannot use optional chaining on non-optional value of type 'Branch' Branch.getInstance()?.logout() ~~~~~~~~~~~~~~~~~~~~^ /Users/Mark/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_branch_io_plugin-1.0.1/ios/Classes/SwiftFlutterBranchIoPlugin.swift:111:48: error: cannot use optional chaining on non-optional value of type 'Branch' let latestParams = Branch.getInstance()?.getLatestReferringParams() ~~~~~~~~~~~~~~~~~~~~^ /Users/Mark/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_branch_io_plugin-1.0.1/ios/Classes/SwiftFlutterBranchIoPlugin.swift:116:47: error: cannot use optional chaining on non-optional value of type 'Branch' let firstParams = Branch.getInstance()?.getFirstReferringParams() ~~~~~~~~~~~~~~~~~~~~^ /Users/Mark/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_branch_io_plugin-1.0.1/ios/Classes/SwiftFlutterBranchIoPlugin.swift:148:29: error: cannot use optional chaining on non-optional value of type 'Branch' Branch.getInstance()?.initSession(launchOptions: launchOptions) { params, error in ~~~~~~~~~~~~~~~~~~~~^ /Users/Mark/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_branch_io_plugin-1.0.1/ios/Classes/SwiftFlutterBranchIoPlugin.swift:169:49: error: cannot use optional chaining on non-optional value of type 'Branch' let branchHandled = Branch.getInstance()?.application(app, open: url, options: options) ?? false ~~~~~~~~~~~~~~~~~~~~^ /Users/Mark/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_branch_io_plugin-1.0.1/ios/Classes/SwiftFlutterBranchIoPlugin.swift:175:29: error: cannot use optional chaining on non-optional value of type 'Branch' Branch.getInstance()?.handlePushNotification(userInfo) ~~~~~~~~~~~~~~~~~~~~^ /Users/Mark/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_branch_io_plugin-1.0.1/ios/Classes/SwiftFlutterBranchIoPlugin.swift:180:51: error: cannot use optional chaining on non-optional value of type 'Branch'

Thanks,

[bejavu]

made a quick fix: https://github.com/fuseio/flutter-branch-io/tree/optional_branch_bug_fix

[Morkos]

@bejavu Thanks! I did the same and added some logic for search ad/Facebook deep linking for Branch here:

https://github.com/alexg313/flutter-branch-io/commit/e5ba10438d51f73bd483cd0fe9ec4887bad21e33

Although it may not be the best because now flutter-branch-io depends on an external library like Facebook now.

[Morkos]

@blackmenthor feel free to close this. thank you