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Enzo Lizama Paredes GDG Open @enzoftware Flutter Flavors Flavors / Schemes for Flutter apps.

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What is Flutter? Again?

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Let's get started!

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https://kinbiko.com/software-engineering/why-how-what/

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What the #@&% is a flavor? No, it is not food!

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Why I should use flavors? It could save your life.

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● We can bring order into testing environments. Sometimes, our application use API, and it has different versions. Thanks to multi flavor apps, we can have separate builds for each server, so any team member can always download correct files and start testing ● We can offer version of application with no ads inside for premium users Why Multi Flavor Apps

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How to implement flavors? As easy as it could be.

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// Build types buildTypes { debug { applicationIdSuffix ".debug" debuggable true minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } }

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// Flavors android { flavorDimensions "version" productFlavors { freeVersion { //select the dimension of flavor dimension "version" //configure applicationId for app published to Play store applicationId "com.pcc.flavors.free" //Configure this flavor specific app name published in Play Store resValue "string", "flavored_app_name", "Free Great App" } paidVersion { dimension "version" applicationId "com.pcc.flavors.paid" resValue "string", "flavored_app_name", "Paid Great App" } } }

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iOS Schemas

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Flutter build modes Debug: flutter run Profile: flutter run --profile Release: flutter run --release / flutter build

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// flavor_config.dart enum Flavor { DEV, QA, PRODUCTION, DEMO, }

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// flavor_config.dart class FlavorConfig { final Flavor flavor; final String name; final Color color; final FlavorValues values; static FlavorConfig _instance; }

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//main_dev.dart void main() { FlavorConfig( flavor: Flavor.DEV, color: Colors.green, values: FlavorValues( apiUrl: '/bins/k0p5n', ), ); runApp(MyApp()); }

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// repository.dart final String _url = FlavorConfig.instance.values.apiUrl; final String _baseUrl = FlavorConfig.isProduction() ? 'jsonplaceholder.typicode.com' : 'api.myjson.com';

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// app.dart body: Center( child: Column( mainAxisAlignment: MainAxisAlignment.center, children: [ Text( 'You are in :', ), Text( '${FlavorConfig.instance.name} flavor', style: Theme.of(context).textTheme.display1, ), Text('Api url : ${FlavorConfig.instance.values.apiUrl}'), ], ), ),

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How to run flavors Run dev flavor : flutter run -t lib/main_dev.dart Run qa flavor : flutter run -t lib/main_qa.dart Run demo flavor : flutter run -t lib/main_demo.dart Run production flavor : flutter run -t lib/main_prod.dart

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Live Demo enzoftware/flutter_flavors

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https://github.com/enzoftware/flutter_flavors

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How to go further with Flutter? Always be curious.

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Enzo Lizama Paredes GDG Open @enzoftware Thank You!