chore: support flutter 3.29

[locandpad]

RTM 1 and RTM 2 is not fully compatible, therefore, developers stucked on RTM 1 cannot update to latest Flutter due to issues below:

• Fix: Deprecated imperative apply of Flutter's Gradle plugins
• Fix: Removal of v1 Android embedding Java APIs

Tested and run ok on Flutter 3.29.3

[locandpad]

@peilinok Please help me take a look

[peilinok]

Hi @locandpad ,

We greatly appreciate your contribution to this project. However, we regret to inform you that this Pull Request cannot be merged due to testing concerns. While we plan to address broader compatibility considerations in RTM version 2, for RTM version 1, we recommend maintaining a private fork where you can implement these changes as needed. The primary concern is that the proposed Android Gradle Plugin (AGP) and Gradle version upgrades are too substantial, which could cause compilation issues for clients who maintain older Flutter versions.

[Zazo032]

@peilinok this is also blocking us from upgrading our Flutter version, there's still no migration guide to RTM 2 for this Flutter package after 7 months since its release

[locandpad]

@peilinok this is also blocking us from upgrading our Flutter version, there's still no migration guide to RTM 2 for this Flutter package after 7 months since its release

You can refer to native doc for migration, it's pretty similar in Flutter https://docs.agora.io/en/signaling/overview/migration-guide?platform=android

What they don't tell you is that RTM 2.x is not fully backward compatible with 1.x. If you are using the description param from 1.x raw message, then messages sent from 2.x users to 1.x won't behave correctly, otherwise you are good to upgrade to 2.x

[Zazo032]

@locandpad could you rebase this on top of latest master? To catch up on latest changes/releases

[locandpad]

@peilinok Android 16k page sizes requirement coming November 1st, do you have any plan to support it on RTM1 or do we need to migrate to 2.x ?

[Zazo032]

@locandpad version 1.6.3 has 16KB support, since this is still not merged, can you rebase from latest master?

[Zazo032]

@peilinok version 1.6.3 from pub.dev doesn't compile as-is with Flutter 3.32.8, could you also check that?