[Bug]: device_info_plus not compatible with AGP9+

[under3415]

Platform

Android

Plugin

device_info_plus

Version

12.3.0

Flutter SDK

3.38.9

Steps to reproduce

Upgrade project to Gradle 9 and AGP 9 (currently 9.3.1)

Code Sample

Example project

Logs

FAILURE: Build completed with 2 failures.

1: Task failed with an exception.
-----------
* Where:
Build file 'C:\Users\user\AppData\Local\Pub\Cache\hosted\pub.dev\device_info_plus-12.3.0\android\build.gradle' line: 25

* What went wrong:
A problem occurred evaluating project ':device_info_plus'.
> Failed to apply plugin 'kotlin-android'.
   > Failed to apply plugin 'org.jetbrains.kotlin.android'
     The 'org.jetbrains.kotlin.android' plugin is no longer required for Kotlin support since AGP 9.0.
     Solution: Remove the 'org.jetbrains.kotlin.android' plugin from this project's build file: ..\..\..\..\Users\user\AppData\Local\Pub\Cache\hosted\pub.dev\device_info_plus-12.3.0\android\build.gradle.
     See https://kotl.in/gradle/agp-built-in-kotlin for more details.
      > java.lang.Throwable (no error message)
==============================================================================

2: Task failed with an exception.
-----------
* What went wrong:
A problem occurred configuring project ':device_info_plus'.
> Failed to notify project evaluation listener.
   > java.lang.NullPointerException (no error message)
   > java.lang.NullPointerException (no error message)
   > Android Gradle Plugin: project ':device_info_plus' does not specify `compileSdk` in build.gradle (C:\Users\user\AppData\Local\Pub\Cache\hosted\pub.dev\device_info_plus-12.3.0\android\build.gradle).

==============================================================================

BUILD FAILED in 37s
Running Gradle task 'bundleRelease'...                             38.1s

┌─ Flutter Fix ────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ [!] Starting AGP 9+, the default has become built-in Kotlin. This results in a build failure when applying the kotlin-android plugin at                  │
│ C:\src\projects\workoutfromhome\android\app\build.gradle.                                                                                                │
│                                                                                                                                                          │
│ To resolve this, migrate to built-in Kotlin. For instructions on how to migrate, see: https://docs.flutter.dev/release/breaking-changes/migrate-to-agp-9 │
└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘

Flutter Doctor

[√] Flutter (Channel stable, 3.38.9, on Microsoft Windows [Version 10.0.26200.7705], locale en-NZ) [543ms]
    • Flutter version 3.38.9 on channel stable at C:\src\flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 67323de285 (8 days ago), 2026-01-28 13:43:12 -0800
    • Engine revision 587c18f873
    • Dart version 3.10.8
    • DevTools version 2.51.1
    • Feature flags: enable-web, enable-linux-desktop, enable-macos-desktop, enable-windows-desktop, enable-android, enable-ios, cli-animations, enable-native-assets,
      omit-legacy-version-file, enable-lldb-debugging

[√] Windows Version (11 Pro 64-bit, 25H2, 2009) [1,087ms]

[√] Android toolchain - develop for Android devices (Android SDK version 36.1.0) [2.6s]
    • Android SDK at C:\Users\user\AppData\Local\Android\sdk
    • Emulator version 36.3.10.0 (build_id 14472402) (CL:N/A)
    • Platform android-36.1, build-tools 36.1.0
    • Java binary at: C:\Program Files\Android\Android Studio\jbr\bin\java
      This is the JDK bundled with the latest Android Studio installation on this machine.
      To manually set the JDK path, use: `flutter config --jdk-dir="path/to/jdk"`.
    • Java version OpenJDK Runtime Environment (build 21.0.8+-14196175-b1038.72)
    • All Android licenses accepted.

[√] Chrome - develop for the web [255ms]
    • Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[!] Visual Studio - develop Windows apps (Visual Studio Community 2022 17.14.24) [254ms]
    • Visual Studio at C:\Program Files\Microsoft Visual Studio\2022\Community
    • Visual Studio Community 2022 version 17.14.36908.2
    • Windows 10 SDK version 10.0.26100.0
    X Visual Studio is missing necessary components. Please re-run the Visual Studio installer for the "Desktop development with C++" workload, and include these components:  
        MSVC v142 - VS 2019 C++ x64/x86 build tools
         - If there are multiple build tool versions available, install the latest
        C++ CMake tools for Windows
        Windows 10 SDK

[√] Connected device (3 available) [206ms]
    • Windows (desktop) • windows • windows-x64    • Microsoft Windows [Version 10.0.26200.7705]
    • Chrome (web)      • chrome  • web-javascript • Google Chrome 144.0.7559.110
    • Edge (web)        • edge    • web-javascript • Microsoft Edge 144.0.3719.104

[√] Network resources [605ms]
    • All expected network resources are available.

! Doctor found issues in 1 category.

Checklist before submitting a bug

• I searched issues in this repository and couldn't find such bug/problem
• I Google'd a solution and I couldn't find it
• I searched on StackOverflow for a solution and I couldn't find it
• I read the README.md file of the plugin
• I'm using the latest version of the plugin
• All dependencies are up to date with flutter pub upgrade
• I did a flutter clean
• I tried running the example project