Remove references to deprecated v1 Android embedding

[reidbaker]

Remove references to deprecated v1 Android embedding

To ensure this plugin will work with users running the next stable version of Flutter remove references to the v1 embedding.

The v1 embedding was deprecated around 6 and a half years ago. In Flutter 3.22, the Flutter tool dropped support for building v1 apps entirely. Flutter plans to delete version one of it's Android embedding in the next stable release, per https://medium.com/flutter/whats-new-in-flutter-3-22-fbde6c164fe3 (in the "Removal of v1 Android embedding" section).

When that deletion happens, any apps using plugins that still have references to the removed classes will fail to build when updating to the next stable version (probably Flutter 3.26).

As a part of this deprecation, the Flutter Android team is doing community outreach by filing bugs and submitting some pull requests to update plugins to minimize the impact this removal has on the community.

Some example PRs:

• Flutter team maintained plugins: [many] Remove references to v1 embedding flutter/packages#6494
• android_alarm_manager_plus fix(android_alarm_manager_plus): Remove references to v1 embedding fluttercommunity/plus_plugins#2864

Consequences:

• This change should have no impact on users of this plugin that are building apps using the v2 embedding (we don't have a percentage to share, but this is the vast majority of users).
• It will remove support for users that are still using the v1 embedding on versions of Flutter older than 3.22.

If this change doesn't land, this plugin will instead be broken for all apps building on the next stable version of Flutter and beyond.

Is there a way to support both v1 and v2 embedding apps in the next stable version of Flutter?

No.

This is the PR where we are removing the deprecated engine classes: flutter/engine#52022

[sowens-csd]

Thanks for pointing this out, I'd missed it. I'll have a look at removing it now.

[reidbaker]

You didn't miss anything in the original depreciation we told plugin developers to @ignore the deprecration in order to support both v1 and v2 android embedding apps and the api has had very view changes. Thanks for being responsive :)

[sowens-csd]

If the plugin builds and runs on Android in the latest beta branch would that prove the change has been made successfully? So far I've removed the registerWith method and the import statement for registrar and it works on 3.24 as expected.

[reidbaker]

We have not actually landed the pr that removes the classes so building against the beta branch wouldn't catch this issue.

This code search https://github.com/search?q=repo%3Acsdcorp%2Fspeech_to_text+%28%22io.flutter.view.FlutterMain%22+OR+%22io.flutter.view.FlutterNativeView%22+OR+%22io.flutter.view.FlutterView%22+OR+%22io.flutter.embedding.engine.plugins.shim%22+OR+%22io.flutter.app%22+OR+%22PluginRegistry.Registrar%22%29+&type=code looks for the removed classes and it appears after 859feae you have removed the classes I would expect to be impacted.

[reidbaker]

I think this issue is safe to close when you next push to pub but am not closing because I am not sure of your release process or if reporters close issues.

[sowens-csd]

Thanks!

There's a beta now with this change. 7.0.0-beta.1