Flutter build failed after `flutter upgrade` to 2.10 - flutter

Question

What is causing the following build exception in an existing Flutter project after upgrading flutter to 2.10?
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:checkDebugAarMetadata'.
> Multiple task action failures occurred:
> A failure occurred while executing com.android.build.gradle.internal.tasks.CheckAarMetadataWorkAction
> The minCompileSdk (31) specified in a
dependency's AAR metadata (META-INF/com/android/build/gradle/aar-metadata.properties)
is greater than this module's compileSdkVersion (android-30).
Dependency: androidx.window:window-java:1.0.0-beta04.
AAR metadata file: C:\Users\Blah\.gradle\caches\transforms-2\files-2.1\602ce26881e3b92788ae83c190d3c36f\jetified-window-java-1.0.0-beta04\META-INF\com\android\build\gradle\aar-metadata.properties.
> A failure occurred while executing com.android.build.gradle.internal.tasks.CheckAarMetadataWorkAction
> The minCompileSdk (31) specified in a
dependency's AAR metadata (META-INF/com/android/build/gradle/aar-metadata.properties)
is greater than this module's compileSdkVersion (android-30).
Dependency: androidx.window:window:1.0.0-beta04.
AAR metadata file: C:\Users\Blah\.gradle\caches\transforms-2\files-2.1\9520e6f13992d2f4d96b17b856330597\jetified-window-1.0.0-beta04\META-INF\com\android\build\gradle\aar-metadata.properties.

Answer 1

Flutter 2.10 support for Foldable devices via AndroidX
Flutter 2.10 added support for foldable Android devices.
This relies on Android SDK API version 31's AndroidX library dependency of: androidx.window:window-java:1.0.0
The build failed because:
this new AndroidX dependency requires Android compileSdkVersion of 31 or higher.
It also requires kotlin_version of 1.5.31 or higher.
So existing Flutter/Android projects may need some gradle file changes:
android/build.gradle:
bump ext.kotlin_version to at least 1.5.31 (1.6.10 is available as of Feb 2022)
buildscript {
ext.kotlin_version = '1.5.31'
android/app/build.gradle
bump compileSdkVersion to 31 or higher
android {
compileSdkVersion 31
If you don't have Android 12 SDK (API level 31) installed...
Install & Use SDK API 31 (Android 12) in Android Studio
In Android Studio
go to Tools > SDK Manager > tick/check Android 12 (S) API Level 31 > click OK button > wait for download/install
Platform & Project Settings
Next we need to add Android SDK API 31 to our Project Structure under both Platform Settings and Project Settings
Android Studio > File > Project Structure
Under Platform Settings click SDKs
In the middle column click + icon button, select "Add Android SDK.."
You will be prompted to select an Android SDK directory
Select your Android Sdk root directory like C:\Android\Sdk
do not select the specific API version like C:\Android\Sdk\platforms\android-31. This will be rejected.
A "Create New Android SDK" window will pop up.
By default Java SDK 11 & Build target: Android API 31 will be preselected. If not, select them.
Click OK.
Android API 31 Platform is now available for your Project.
Now under Project Settings, click on Project
On the right under Project SDK:
Click the dropdown list
Select Android API 31 Platform
Click OK
We're done.
Android 12 SDK API 31 is now installed and ready to compile this project.

Answer 2

You should Set both compileSdkVersion and targetSdkVersion to 31 in your build.gradle(app) file.
android {
compileSdkVersion 31 // <-- This
defaultConfig {
applicationId "com.example.app"
targetSdkVersion 31 // <-- and this too
// ...
}
}

Answer 3

I hade the same issue, all those listed above did not for me, what worked for me is that i downgrade the geolocator from 9.0.1 to 7.7.0