Android build changes needed to use library in new project based on template

[Carl-CWX]

Trying to use the library with a new flutter project, flutter doctor output :

Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 2.5.3, on Microsoft Windows [Version 10.0.19042.1348], locale en-GB)
[√] Android toolchain - develop for Android devices (Android SDK version 32.0.0-rc1)
[√] Chrome - develop for the web
[√] Visual Studio - develop for Windows (Visual Studio Community 2019 16.9.6)
[√] Android Studio (version 2020.3)
[√] Connected device (4 available)

Importing V1.1.4 into a new project required the following changes to the project generated by Flutter to support a phone running Android 12 (Pixel 6) and another running Android 10.

• \android\build.gradle - "ext.kotlin_version = '1.3.50'" to "ext.kotlin_version = '1.4.32'"
• \android\build.gradle - "classpath 'com.android.tools.build:gradle:4.1.0'" to "classpath 'com.android.tools.build:gradle:4.1.3'"
• \android\app\build.gradle - "compileSdkVersion 30" to "compileSdkVersion 31"
• \android\app\build.gradle - "targetSdkVersion 30" to "targetSdkVersion 31"
• \android\app\build.gradle - "minSdkVersion 16" to "minSdkVersion 21" (Documented on pub.dev)
• \android\app\src\main\AndroidManifest.xml - add android:exported="true" to the application tag (Android 12 requirement)

[jhoogstraat]

Thanks for your suggested changes.

I am unable to put the changes into the code until next year, sadly..
If you like the changes to happen earlier, I am happy to accept PRs :)