update the build version to java 17 #310

	name: prepare

	on:
	workflow_dispatch:
	pull_request:
	branches: [master]

	jobs:
	main:
	name: Flutter ${{ matrix.flutter-version }}
	runs-on: ubuntu-latest

	strategy:
	fail-fast: false
	matrix:
	flutter-version: ["3.19.x"]

	steps:
	- name: Clone repository
	uses: actions/checkout@v4

	- name: Set up Flutter
	uses: subosito/flutter-action@v2
	with:
	channel: stable
	flutter-version: ${{ matrix.flutter-version }}

	- name: Set up Java
	uses: actions/setup-java@v4
	with:
	distribution: temurin
	java-version: 21

	- name: flutter pub get
	run: flutter pub get

	- name: Build example app
	working-directory: example
	run: flutter build apk --debug

	- name: dart format
	run: dart format --set-exit-if-changed .

	- name: flutter analyze
	run: flutter analyze --no-fatal-infos

	- name: flutter test
	run: flutter test

	- name: ktlint check
	working-directory: example/android
	run: ./gradlew flutter_downloader:ktlintCheck

	- name: flutter pub get (example app)
	working-directory: ./example
	run: flutter pub get

	- name: flutter format (example app)
	working-directory: ./example
	run: dart format --set-exit-if-changed .

	- name: flutter analyze (example app)
	working-directory: ./example
	run: flutter analyze --no-fatal-infos

	- name: flutter test (example app)
	working-directory: ./example
	run: flutter test

	- name: Dry run pub publish
	# We don't want it to fail the CI, it's just to see how would `pub publish` behave.
	run: dart pub publish --dry-run \|\| true

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