Generate flutter apps with Azure DevOps

generate-app-android.yml

parameters:
- name: appFolder # ex : ./src/MyApp
  type: string
- name: flutterVersion # ex : 1.17.5
  type: string
- name: appVersion # ex : 1.10.1
  type: string
- name: appBuildNumer # ex : 303 (/!\ the build number must be incremental when the package is published on the store)
  type: string

steps:
- task: FlutterInstall@0
  displayName: 'install flutter ${{ parameters.flutterVersion }}'
  inputs:
    channel: 'stable'
    version: 'custom'
    customVersion: '${{ parameters.flutterVersion }}'

- task: FlutterBuild@0
  displayName: 'build android aab'
  inputs:
    target: 'aab'
    projectDirectory: '${{ parameters.appFolder }}'
    buildName: '${{ parameters.appVersion }}'
    buildNumber: '${{ parameters.appBuildNumber }}'

- task: CopyFiles@2
  displayName: 'copy android aab'
  inputs:
    Contents: '${{ parameters.appFolder }}/**/app.aab'
    TargetFolder: '$(Build.ArtifactStagingDirectory)/${{ parameters.appFolder }}/android'
    flattenFolders: true

- task: PublishBuildArtifacts@1
  displayName: 'publish packages'
  inputs:
    PathtoPublish: '$(Build.ArtifactStagingDirectory)'
    ArtifactName: 'packages'
    publishLocation: 'Container'