Dart & Flutter Code Snippets

Are you a Flutter developer? If so, you’ll know that code snippets can be a life-saver. They’re perfect for when you need to quickly prototype an idea, or when you want to dive into someone else’s code. In this post, we’ve collected some of our favorite Flutter code snippets. Whether you’re just getting started with Flutter or you’re looking for new ways to improve your development process, we hope you find these snippets helpful!

Array & List

Iterate Through a Map
Use await Inside A Loop


Circular Button
Rounded Button

Class & Object

Use the Super Argument
Create Getters and Setters


Add Shadow to a Widget
Glassmorphism Card
Set Min Width and Min Height of a Container

Debug & Profiling

Evaluate a Variable’s Data Type


Get Device Info


Create and Use Enum


Read and Write a Text File


Create Genetic Extension
Create Extension Methods
Pass a Method as A Parameter


Add Launcher Icon
Display Counter Badge above an Icon


Add Grayed Out Effect
The argument type 'ImageNetwork' can't be assigned to the parameter type 'ImageProvider<Object>?'
Set CircleAvatar Size
Image with Bezier Curves
Create a Circular Image
Convert BASE64 String into Image


Hide Soft Keyboard


Set Widget Center at Middle of Screen
Set Gradient Background Color for a Screen
Responsive Layout
Stack Page with ClipPath Wave
Tik Tok-like Video Player
Desktop Skype-like Chat Box


FutureBuilder with ListView

Menu & Navigation

Wave-shaped AppBar
Animated Stack Menu
Gmail Sidebar
Notched Bottom Bar
AppBar with Round Bottom
Override the Back Button in AppBar
Pass Data To Previous Screen
Create a Dropdown
Refresh Currently Active Page


Ectract Number from String

Operating System

Detect Running Platform and Web

Progress Indicator

Progress Indicator with Animation


Rounded Input TextField without Border
Text’s Default Font Size


Change Background Color of a Screen


Execute a Function After Delay
Call a Function Repeatedly


Fix flutter upgrade Command Failed
Fix Unhandled Exception: This widget has been unmounted, so the State no longer has a context
Fix setState() or markNeedsBuild() called during build


Change Page Title Dynamically

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