Assess your understanding of the key steps, requirements, and best practices for deploying Flutter apps on Android and iOS platforms. This quiz is designed to help you grasp essential deployment concepts, process prerequisites, and platform-specific considerations.
Which file is typically required to sign a Flutter Android app for release before uploading it to an app store?
Explanation: A keystore file is needed to digitally sign an Android app before publishing it, ensuring its authenticity and integrity. The 'sdkconfig file' is not used in the signing process. The 'pubspec.yaml' manages Flutter dependencies, and 'build.gradle' defines the build configuration, but does not contain the signing key itself.
When deploying a Flutter app to iOS devices, what is the minimum required iOS version typically set in the project configuration?
Explanation: The minimum iOS version is commonly set to 12.0 for Flutter apps to ensure compatibility and support for modern devices. Versions '10.0' and '8.0' are outdated and may not support recent Flutter features, while '14.0' is unnecessarily high and would restrict device compatibility.
Which build mode should be used when creating a Flutter app for distribution on Android or iOS stores?
Explanation: Release build mode optimizes the app for performance and removes debugging tools, making it suitable for distribution. 'Debug' builds are for development and testing, 'Profile' is for performance profiling, and 'Test' is not a standard Flutter build mode.
What is a key requirement when preparing your app icon for deploying a Flutter app to the iOS App Store?
Explanation: Multiple device icon sizes are required for iOS deployment to ensure proper appearance across all devices. Supplying only a single size like '1024x1024' is insufficient, while rounded corners are applied by the system, not pre-applied. Animated icons are not permitted for app icons.
Which configuration file is used to specify the app name, version, and build number for both Android and iOS in a Flutter project?
Explanation: pubspec.yaml allows you to set the app's name and version for use on both platforms. 'Manifest.xml' is only for Android and does not contain all necessary app information, 'Info.plist' is specific to iOS, and 'gradle.properties' manages build settings for Android builds only.
Which command is used to generate a release APK of your Flutter app for Android?
Explanation: The 'flutter build apk --release' command compiles the app in release mode and prepares it for store submission. 'flutter run debug' is for launching in debug mode, 'flutter install ios' is not a valid command, and 'flutter build ios' builds for iOS, not Android.
What is the main purpose of a provisioning profile when deploying a Flutter app to iOS devices?
Explanation: A provisioning profile links the app, developer, and devices for authorized installation and proper signing on iOS. It does not control screen layout or RAM requirements, and it is not intended to add debugging features.
Before submitting a Flutter app to the Android or iOS app store, which of the following is typically required for the store listing?
Explanation: Store listings require screenshots to show users the app interface. Database schemas and testing logs are not requested for public listings, and the source code archive is not typically submitted through the app store.
What format is commonly used for the unique package or bundle identifier in Flutter app deployment?
Explanation: The 'com.example.app' format follows a reverse domain style, which is the standard for both Android and iOS. The other options use incorrect delimiters or naming conventions that would not be accepted for deployment.
When preparing an update for your Flutter app, where should you increment the version and build number to ensure proper deployment?
Explanation: The 'pubspec.yaml' file contains fields for versioning, making it the correct place to update before release. Editing 'main.dart' does not affect deployment info, the 'assets folder' is for resources, and 'local.properties' is not related to app versioning.