[PDF] [PDF] Building MVP with Flutter - Tomasz Szulc

_ Android/iOS app - for my girlfriend _ To be released on Google Play and App Store after adding more features that in app _ Read only server = github :) 



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Beginning App Development with Flutter

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[PDF] Building MVP with Flutter - Tomasz Szulc

_ Android/iOS app - for my girlfriend _ To be released on Google Play and App Store after adding more features that in app _ Read only server = github :) 



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Building MVP with FlutterTOMASZ SZULC

Never settle intive.comProject!2_Android/iOS app - for my girlfriend ! _Available for Android " _Main features: calculation of glycemic index, glycemic load and carbohydrates exchanges of a meal _To be released on Google Play and App Store after adding more features that integrates the app with her bussiness.

Never settle intive.com!3

Never settle intive.comTrelloboard for tracking progress of MVP and ideas !4

Never settle intive.comDesign !5_Handcrafted with Sketch :) _Few iterations and review - even with yourself only, or show it to someone _Neither iOS nor Android design - custom components for faster development on both plaforms - later you can always change the designs. _The only platform specific component is AppBar.

Never settle intive.com!6Design - iterations

Never settle intive.com!7

Never settle intive.comApp Development!8_No plan for MVP at the beginning - Bad But specified later (Trello) _No in app storage in the beginning - No Firebase or other modern data storage solutions. App only cached downloaded data in the memory at the beginning. _Download CSV and persist on disk _Download SQLite database and persist on disk _Keep own SQLite database and download other one from server to have default data from the server and be able to add and store other products and meals in app. _Read only server = github :)

Never settle intive.comWhat's next?!9_Github still serves as a server :) _Configuration file on the server downloaded on launch. _Curated list of in-app notifications (messages, new posts on instagram, new articles on the blog, etc.) stored on the github and downloaded from time to time by the app while foregrounded. _Basic analytics _New products in database

Never settle intive.comFlutter!10_Great for prototyping! No need to spend a lot of time polishing UI _You can have a common UI for both platforms _No need to know Android specific things to create an app if you know iOS. Lots of available packages that supports files storage, preferences and stuff. _You can later go native with UI and project when your product get a traction and there is future for it. Might lower a cost of development and design at the beginning.

Never settle intive.comFlutter!11_Everything is a widget. Components consists of widgets, App consists of components, and app is a widget too :) _Button is a widget, padding is a widget, gesture detector is a widget. _Some time needed to learn about all the widget classes but easy to start and see effects immediately. Complex classess hierarchy. _Many small releases to the framework. _350 new and 905 closed issues on flutter/flutter since I started working on app. _41k+ stars.

Never settle intive.com!12Flutter

Never settle intive.comFlutter!13_Dart language; Easy to understand and start with; similar to Swift. _Many libs available for Dart. I had no issue to find libs for my project, but my project is rather very simple case. _My app utilizes following libs: csv, flutter_launcher_icons, http, path_provider, shared_preferences, sqflite, uuid.

Never settle intive.comGood practices!14_Start coding new widget as a StatelessWidget and go with StatefulWidget later when needed. Great for prototyping a view to see if it fits and to play with. _Prototype in one file, later you can extract code to separate file and import it. Think locally.

Never settle intive.comGood practices!15_Use async/await at the beginning of coding. Speeds up prototyping. Later convert to futures and async code where necessary.

Never settle intive.comAsync/await!16

Never settle intive.comGood practices!17_Define callbacks as a instance methods to keep the code clean.

Never settle intive.comGood practices!18_DO NOT build widgets like in Flutter Cookbook on flutter webpage.

Never settle intive.comGood practices!19_Separate code in smaller pieces and add one widget to another.

Never settle intive.comGood practices!20_"flutter run" starts in debug mode by default. It slows the app a lot! Launch the app with "release" option to see it working full speed. _When you have multiple devices available in your network you must type identifier of a device to launch the app on it. _"flutter emulators", "flutter devices" _"flutter run -d 3020fcc47e009e817d2b4be2c631fa6992d90b18 _Visual Studio Code with Flutter extension is good IDE. Programming on Mac using Microsoft IDE to make app for Android ¯\_(quotesdbs_dbs14.pdfusesText_20