Flutter Starter

Intro

This is a starter project for Flutter based mobile applications. Some of the code is useful for desktop apps too. This is an example of a simple mobile app with API integration and how to set it up with some dependency injection and predictable testing of API integrations.

• See AppDependencies for some simple dependency injection using a Provider.
• See TestDepdendencies for injection of test dependencies.
• See result.dart for functional handling of errors.
• See json_decoder.dart for simple json decoding (careful it can throw exception).
• See http.dart for exception free API integrations including safe json parsing.
• See location_search_api.dart for a usage example of all the above.
• See location_search_page_test.dart for an example test with API integration.
• See main.dart for the main app scaffolding.
• See app_pages for the UI.

Dev Environment setup

• Install Flutter
• Install Android Studio with Flutter and Dart plugins
• Install XCode for iOS dev

Running checks

This checks formatting, runs tests and checks for dependency cycles

make check

Running the app

On Android Emulator

• In Android Studio, setup an emulator in the Device Manager.
• Run it using the play button in Device Manager
• It switches to the Running Devices view.
• Select the emulator from the device list next to the run configuration.
• Run main.dart

On iOS Simulator (MacOS+XCode required)

• Start the iOS Simulator app
• Install and Run the iPhone Simulator of your choice.
• In Android Studio, select the simulator from the device list next to the run configuration.
• Run main.dart

On Android or iOS Device

• Configure device for developer mode (see Android/iOS documentation for that)
• Connect to your computer
• Select in Android Studio's device list
• Run main.dart

Formatting

We use a line length of 100 characters, which is good enough to show two files side by side on a modern 27 inch screen. Line length can be set in Android Studio Preferences > Editor > Code Style > Dart.

If your prefer a different line length, feel free to update the Tasks.mk to your team's liking and have developers configure their IDE as well.

Cyclic dependencies

Make sure your imports are relative only for files in the same folder, otherwise use package: imports.