[Bug] Android Gradle Plugin 8.x compatibility - package attribute in AndroidManifest.xml causes build failure

[omaralqaseer]

Bug Description

When using Android Gradle Plugin 8.0 or higher, the build fails due to the deprecated package attribute in the AndroidManifest.xml file.

Error Message

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':freerasp:processReleaseManifest'.
  A failure occurred while executing com.android.build.gradle.tasks.ProcessLibraryManifest$ProcessLibWorkAction
  Incorrect package="com.aheaditec.freerasp" found in source AndroidManifest.xml: /Users/[user]/.pub-cache/hosted/pub.dev/freerasp-[version]/android/src/main/AndroidManifest.xml.
  Setting the namespace via the package attribute in the source AndroidManifest.xml is no longer supported.
  Recommendation: remove package="com.aheaditec.freerasp" from the source AndroidManifest.xml

Environment

• Android Gradle Plugin: 8.0+
• Platform: Android
• Flutter: Any version using modern AGP

Root Cause

Android Gradle Plugin 8.0+ no longer supports the package attribute in AndroidManifest.xml. The namespace should be declared in the module's build.gradle file instead.

Current Problematic Code

File: android/src/main/AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.aheaditec.freerasp">
</manifest>

Proposed Solution

1. Remove the package attribute from AndroidManifest.xml:
<manifest xmlns:android="http://schemas.android.com/apk/res/android">
</manifest>

2. Update build.gradle to use unconditional namespace:
android {
    namespace "com.aheaditec.freerasp"
    // ... rest of config
}

Impact

This issue affects all Flutter projects using Android Gradle Plugin 8.0+ with freerasp, forcing developers to downgrade their build tools.

Current Workaround

Developers must downgrade to AGP 7.x, which prevents using modern Android development features and tooling.

References

- https://developer.android.com/studio/build/configure-app-module#set-namespace
- https://developer.android.com/build/releases/past-releases/agp-8-0-0-release-notes

[yardexx]

Hello.

I've checked the issue, but I was unable to replicate it (used the new version of Flutter, and it compiled just fine). From what I checked, other popular plugins kept it there, and it works just fine for them as well. Maybe it's caused by something else?