Using Rows and Columns in Flutter

 📐 Row vs. Column Overview

Widget Layout Direction Example Use

Row Horizontal Buttons next to each other

Column Vertical Stack elements like title, subtitle, and button


🔹 Basic Syntax

🔸 Row Example

dart

Copy

Edit

Row(

  mainAxisAlignment: MainAxisAlignment.spaceBetween,

  children: <Widget>[

    Icon(Icons.menu),

    Text('Title'),

    Icon(Icons.search),

  ],

)

🔸 Column Example

dart

Copy

Edit

Column(

  mainAxisAlignment: MainAxisAlignment.center,

  crossAxisAlignment: CrossAxisAlignment.start,

  children: <Widget>[

    Text('Hello'),

    Text('World'),

    ElevatedButton(

      onPressed: () {},

      child: Text('Click me'),

    ),

  ],

)

🎯 Key Properties

🔹 mainAxisAlignment

Controls alignment along the main axis:


start, center, end, spaceBetween, spaceAround, spaceEvenly


🔹 crossAxisAlignment

Controls alignment perpendicular to the main axis:


start, center, end, stretch, baseline


📌 In a Row, the main axis is horizontal, and the cross axis is vertical. In a Column, it's the reverse.


⚠️ Common Gotchas

❗ Row or Column Takes Infinite Space

Wrap them in Expanded, Flexible, or give them size constraints using Container, SizedBox, etc.


dart

Copy

Edit

Row(

  children: [

    Expanded(child: Text("This text will expand to fill space")),

    Icon(Icons.more_vert),

  ],

)

🧱 Nesting Rows and Columns

You can nest them to build complex layouts:


dart

Copy

Edit

Column(

  children: [

    Row(

      children: [

        Icon(Icons.star),

        Text('Rating: 4.5'),

      ],

    ),

    Text('Review goes here...'),

  ],

)

🧰 Bonus Tips

Use Spacer() inside a Row or Column to push elements apart.


Use SizedBox(height: 10) for spacing in Columns, or width for Rows.


Wrap text-heavy widgets in Expanded or Flexible to avoid overflow.

Learn Flutter Training in Hyderabad

Read More

Creating Responsive Layouts in Flutter

🧩 UI & Layout in Flutter

Working with Text and Images in Flutter

How to Use the Flutter Debug Console

Visit Our IHUB Talent Training Institute in Hyderabad

Get Directions


Comments

Post a Comment

Popular posts from this blog

Handling Frames and Iframes Using Playwright

Handling Frames and Iframes Using Playwright When automating modern web applications, you’ll often come across frames or iframes—HTML elements used to embed another HTML document within the current page. If you're using Playwright for browser automation, knowing how to handle frames properly is crucial for interacting with elements inside them. In this blog, we’ll walk through how to identify, access, and interact with frames and iframes using Playwright with code examples in JavaScript and Python. 🧾 What Are Frames and Iframes? <frame>: Rarely used now; part of the outdated <frameset> HTML structure. <iframe> (inline frame): Embeds another HTML page inside the current one. Common for third-party content like ads, maps, or payment gateways. 🎯 Why Frames Matter in Automation Elements inside an iframe are not part of the main DOM, so trying to interact with them directly will result in errors unless you switch the context to the frame. 🔍 Locating an Iframe in Pla...
Read more

Tosca for API Testing: A Step-by-Step Tutorial

Tosca for API Testing: A Step-by-Step Tutorial Tricentis Tosca is a powerful and user-friendly test automation tool that supports a wide range of testing types — including API testing. With Tosca, you can easily design, automate, and execute API tests without writing any code. It supports REST, SOAP, and other service types, making it a great choice for end-to-end API validation. 🧰 What is Tosca API Testing? Tosca’s API testing allows testers to: Send requests (GET, POST, PUT, DELETE, etc.) Validate responses (status codes, body, headers) Chain requests and share data between them Perform security, load, and functional tests on APIs ✅ Step-by-Step Guide: Tosca API Testing 🔹 Step 1: Open Tosca and Create a Workspace Launch Tosca Commander Create a new workspace (or open an existing one) Choose the workspace type as Multi-user or Single-user based on your setup 🔹 Step 2: Add a New API Test Case Navigate to the Modules section. Right-click and choose Scan > API Scan. The API Scan wi...
Read more

Working with Tosca Parameters (Buffer, Dynamic Expressions)

🧪 Working with Tosca Parameters (Buffer, Dynamic Expressions) In Tricentis Tosca, parameters help you make your tests flexible, reusable, and data-driven. Two powerful types of parameters in Tosca are: Buffers Dynamic Expressions Let’s understand each one and how to use them effectively. 🟦 1. What is a Buffer in Tosca? A Buffer is a temporary in-memory storage used to store values during test execution. You can store a value in a buffer and then reuse it anywhere in your test case. 🔹 When to use: Save a value from one step and reuse it later Pass values between test steps or modules Dynamically build test data ✅ How to Create a Buffer In a Tosca TestStep, you use the syntax: text Copy Edit =>BufferName This saves a value to a buffer. Example: Capture an Order ID after placing an order: text Copy Edit ActionMode: Buffer Value: =>OrderID This stores the Order ID in a buffer named OrderID. ✅ How to Use a Buffer You can reuse the buffer value like this: text Copy Edit {B[OrderID]}...
Read more