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<!-- start_original_pr_link --> Reverts: flutter/flutter#169276 <!-- end_original_pr_link --> <!-- start_initiating_author --> Initiated by: vashworth <!-- end_initiating_author --> <!-- start_revert_reason --> Reason for reverting: Causing google testing failures <!-- end_revert_reason --> <!-- start_original_pr_author --> Original PR Author: gaaclarke <!-- end_original_pr_author --> <!-- start_reviewers --> Reviewed By: {vashworth} <!-- end_reviewers --> <!-- start_revert_body --> This change reverts the following previous change: ## **BREAKING CHANGE** Adopting Apple's UISceneDelegate protocol shifts the initialization order of apps. For the common cases we've made sure they will work without change. The one case that will require a change is any app that in `-[UIApplicateDelegate didFinishLaunchingWithOptions:]` assumes that `UIApplicationDelegate.window.rootViewController` is a `FlutterViewController` instance. This is sometimes done to register platform channels directly on the `FlutterViewController`. Instead users should use the `FlutterPluginRegistry` API's to create platform channels in `-[UIApplicateDelegate didFinishLaunchingWithOptions:]`, like `FlutterPlugin`s do. An example can be seen here: https://github.com/flutter/flutter/pull/168914/files#diff-9f59c5248b58124beca7e290a57646023cda3ca024607092c6c6932606ce16ee In extreme cases, like bespoke test harnesses, the startup logic can be moved to `-[FlutterViewController awakeFromNib]` in a FlutterViewController subclass. An example can be seen here: https://github.com/flutter/flutter/pull/169276/files#diff-dbe39c23a0a380447b90b7559a878dae8564616e0875c4ef0d9e99e02b91adac ## Changes since revert I changed the init in `//dev/integration_tests/external_textures` from the UIApplicationDelegate to the FlutterViewController's awakeFromNib. This is a more appropriate place for initialization post-UISceneDelegate since it avoids the launch engine altogether. I tried avoiding to make the big change to prove we could do a small change to migrate that project. I don't think this big refactor is indicative of what users will experience. There was a timing assumption in the integration test that required not using the launch engine at all. ## Description fixes: https://github.com/flutter/flutter/issues/167267 design doc: https://docs.google.com/document/d/1ZfcQOs-UKRa9jsFG84-MTFeibZTLKCvPQLxF2eskx44/edit?tab=t.0 relands https://github.com/flutter/flutter/pull/168396 relands https://github.com/flutter/flutter/pull/168914 ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [x] I signed the [CLA]. - [x] I listed at least one issue that this PR fixes in the description above. - [x] I updated/added relevant documentation (doc comments with `///`). - [x] I added new tests to check the change I am making, or this PR is [test-exempt]. - [x] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [x] All existing and new tests are passing. <!-- end_revert_body --> Co-authored-by: auto-submit[bot] <flutter-engprod-team@google.com> |
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Example of calling platform services from Flutter
This project demonstrates how to connect a Flutter app to platform-specific services on iOS using Swift. The equivalent version of this project in Objective C is found in examples/platform_channel.
You can read more about accessing platform and third-party services in Flutter.
iOS
You can use the commands flutter build and flutter run from the app's root
directory to build/run the app or you can open ios/Runner.xcworkspace in Xcode
and build/run the project as usual.
Android
We refer to the platform_channel project.