Read about what ‘addingPercentEncoding‘ is and why it’s important in URL handling. addingPercentEncoding(withAllowedCharacters:) is a String method in Swift that encodes special characters in a string to make it URL-safe. This is often called “URL encoding” or “percent encoding.” Let me break this down with examples: Why URL encoding is necessary? Common character encodings: Here’s… Read More »
What is Plist file? A Property List (Plist) file is a specialized file format used to store structured data. Plist files can contain various data types, including dictionaries, arrays, strings, numbers, dates, and binary data. They are widely used in Apple development for various purposes, such as app configuration, user preferences, and data serialization. Plist files have a .plist file extension and… Read More »
In our app this screen will show us a list of items from a menu, so we’re going to use a List view instead of Xcode’s default template code. Below given is the default text when we create a new app in iOS. So, replace the current text view with this: When the preview updates you’ll now… Read More »
Video Tutorial Here is the first part of best practices in Flutter… 1. Placeholder Widgets Use SizedBox instead of Container as Placeholder widgets. Take a look at the below use-case The SizedBox is a const constructor and creates a fixed-size box. The width and height parameters can be null to indicate that the size of the box should not… Read More »
Wrap widget is such a useful widget in many circumstances. Here we will learn about different types of Chip Widgets such as & Wrap Widgets Watch Video Tutorial First Let’s create a simple Chip Widget. Widget chip(String label, Color color) { return Chip( labelPadding: EdgeInsets.all(5.0), avatar: CircleAvatar( backgroundColor: Colors.grey.shade600, child: Text(label[0].toUpperCase()), ), label: Text( label, style:… Read More »
This post provides a step-by-step guide to implementing a carousel slider in Flutter using a custom CarouselView widget. The code demonstrates how to display a horizontal carousel of images with various customization options. Demo Full code Example import ‘package:flutter/material.dart’;List<String> images = [ “https://images.unsplash.com/photo-1503376780353-7e6692767b70”, “https://images.unsplash.com/photo-1577714141096-bf2b9e69500a”, “https://images.unsplash.com/photo-1542362567-b07e54358753”, “https://images.unsplash.com/photo-1511407397940-d57f68e81203”, “https://images.unsplash.com/photo-1659671026913-b7e632f17395”];class Home extends StatefulWidget { const Home({super.key}); @override State<Home>… Read More »
A ternary search tree is a trie-like data structure where each node may have up to three children. Here is an example which represents the words code, cob, be, ax, war, and we. c / | \ b o w / | | | a … Read More »
Feature OpenAI o1 Google Gemini 2.0 xAI Grok-2 Meta Llama 3.3 Nvidia Nemotron-4 340B Developer OpenAI Google xAI (Elon Musk’s startup) Meta Nvidia Release Date December 2024 December 2024 December 2024 December 2024 December 2024 Key Focus Problem-solving, STEM, competitive programming Efficiency, advanced reasoning Integration with X (formerly Twitter) Open research, accessible to developers Open… Read More »
Flutter 3.27, released in December 2024, introduces several enhancements across the framework, engine, and developer tools, aiming to improve performance, user interface components, and the overall development experience. Framework Enhancements: • Cupertino Widget Updates: Significant improvements have been made to Cupertino widgets to better align with iOS design standards: • CupertinoCheckbox and CupertinoRadio: Enhanced sizes,… Read More »
In Flutter, Streams are a powerful way to handle asynchronous data like file downloads. When downloading a file, streams can help you process chunks of data in real time, making it easy to show progress to the user. Here’s a step-by-step guide on how to download a file using streams in Flutter. Add Required Dependencies… Read More »
In this article you’ll learn what you need to start unit testing your Swift code in Xcode. It is supposed that the project is not having any test target created during it’s creation. Adding unit test target to your Xcode project To unit test your app, your Xcode project must have a unit test target.… Read More »
SwiftUI provides the symbolEffect() modifier to add built-in animation effects for SF Symbols and produce a real touch of delight with almost no effort. For example, we could animate a dog icon up and down with a gentle bounce whenever a button is pressed. You could also try .pulse to animate the opacity, but where things get really clever is when… Read More »
In latest iOS versions ( ios 17 onwards) we can directly put stroke and fill shapes just by adding modifiers one after another as shown below. It works with multiple strokes of various sizes as shown below. In older versions of iOS ( iOS 16 ) SwiftUI provides the fill(), stroke(), and strokeBorder() modifiers for adjusting the way we… Read More »
How to show alerts in swiftUI-Tutorial In our application we show alerts to users to provide some kind of information about the action they have taken. SwiftUI provides simple and direct way of showing alert to users. With iOS 15 it became even easier. In this tutorial we will show you how to setup alerts… Read More »
Sometimes we need to display basic shapes in our apps just to get more attractive UI or just to highlight something. SwiftUI has several build in shapes to help the user to ease the development. It has several built-in shapes such as rectangles, circles, and capsules, each of which can be created, color, and positioned… Read More »
In swiftUI, apple doesn’t provide any dedicated background image or color modifier. It lets us add any kind of background view using its background() modifier. For example, this creates a text view with a large font, then places a 100×100 image behind it. However, it doesn’t need to be an image all the time. For example, this… Read More »
Playing movie or videos from any source is important when it comes to application development. Apple provides some default frameworks to handle it. SwiftUI’s VideoPlayer view lets us playback movies from any URL, local or remote. It comes from the AVKit framework, this can be added to the framework by importing AVKit. The below example shows how… Read More »
In swiftUI we can render colors in different ways, one of them is gradient. In the latest versions of swiftUI it can be done easily. If you are targeting iOS 16 or later you can easily generate gradient simply by adding .gradient() to the color as shown below. To support iOS versions prior to 16,… Read More »
SFSymbols are one of the best feature provided by apple to the developers. It provides vast list of icons that can be scaled and modified as per our need. These images provides consistency across our all screens and apps without any additional effort. SwiftUI’s Image view helps us to load over 2500 SF symbols without… Read More »
In SwiftUI we can render images in different ways. SwiftUI can load images from bundle, from system icons, from a UIImage and many more. Among all these are the most common methods that we use. If you are using Xcode 15 or later, you can load image from application bundle and display it in an… Read More »
Swift’s Text views usually show static, unselectable text by default. Therefore quite often users cannot select the text and copy it, but now you can change that using the .textSelection() modifier with the .enable value. For example, this makes some text the user can select, and some the user cannot: Once the text got selected,… Read More »
Normally when user tap on url shown inside a SwiftUI Text or Link view, it opens in Safari by default. However we can customize that behavior by replacing the openURL environment key. We can either handle the link entirely or perhaps pass it back to the system to open once your custom action completes. In… Read More »
Quite often, while dealing with text contents, we come across questions like ‘how to render mark down content in text?’ SwiftUI has built-in support for rendering Markdown, including bold, italic, links, and more. It’s literally built right into SwiftUI’s Text view, so you can write code like this: The link is tappable and it will be ind… Read More »
There will be situations where you have to expose your Swift class to React Native. To do this, you need to use some Obj-C Macros available in React Native. To use these Obj-C Macros, you need a new Obj-C file: You have to import RCTBridgeModule, so that you can use the Macros to bridge the native… Read More »
A step word is formed by taking a given word, adding a letter, and anagramming the result. For example, starting with the word “APPLE”, you can add an “A” and anagram to get “APPEAL”. Given a dictionary of words and an input word, create a function that returns all valid step words. To solve the… Read More »