The timeline view in Swift is a bit different, because it doesn’t have a display of its own. The main idea behind timeline view is that you can provide some kind of schedule and based on the schedule the view is going to get date and you can pass it to analog view or digital… Read More »
There are two main approaches to implementing pull-to-refresh functionality in SwiftUI, depending on your SwiftUI version and desired level of customization: 1. Using the built-in refreshable modifier (iOS 16+) If you’re targeting iOS 16 and above, SwiftUI offers a built-in refreshable modifier that simplifies pull-to-refresh functionality for List and ScrollView. Here’s how to use it:… Read More »
AsyncImage is a component introduced in SwiftUI to handle the loading and displaying of remote images asynchronously. It simplifies the process of fetching images from the web, handling the loading state, and displaying a placeholder until the image is ready. Here’s a detailed breakdown of how AsyncImage works, its customisation options, and usage examples. Basic… Read More »
In Swift, Core Data is a powerful framework provided by Apple for managing the model layer objects in an application. A Core Data stack refers to the set of objects and configurations used to interact with the Core Data framework. The Core Data stack typically consists of three main components: 2. Persistent Store Coordinator (PSC):… Read More »
Higher-order functions in Swift are functions that take other functions as parameters or return functions as output. They enable a functional programming style by allowing you to compose functions, pass behavior as arguments, and manipulate collections with concise and expressive code. Here are some common higher-order functions in Swift with examples: map(_:): filter(_:): reduce(_:combine:): sorted(by:):… Read More »
Setting up a Core Data stack in Swift involves several steps, including creating a managed object model, setting up a persistent store coordinator, managed object context, and other components. Here’s a basic guide to setting up a Core Data stack in Swift: Create a Data Model: Generate NSManagedObject Subclasses: Initialize the Persistent Store Coordinator: Managed… Read More »
In Swift, enumerations (enums) are powerful constructs that allow you to define a group of related values. Associated values in Swift enums enhance their flexibility by enabling each enum case to carry additional data of varying types. This feature allows you to model more complex data structures and behaviors with enums. Here’s how you can… Read More »
Protocol-oriented programming (POP) is an approach to software development in Swift that emphasizes the use of protocols to define interfaces and behavior, promoting code reuse, flexibility, and composability. POP encourages structuring code around protocols rather than classes, focusing on what types can do rather than what they are. Key concepts of protocol-oriented programming in Swift… Read More »
The XCTest framework is the testing framework provided by Apple for writing and running unit tests in iOS and macOS applications. It is part of the broader XCTest framework available in the Apple ecosystem. XCTest is commonly used with Swift and Objective-C to test various aspects of your code, ensuring its correctness, reliability, and maintainability.… Read More »
In iOS development using UIKit, a UIView is a fundamental building block for constructing the user interface. Two important properties of a UIView are its frame and bounds. These properties define the size and location of the view within its superview. frame: In this example, myView is positioned at (50, 50) within its superview, and… Read More »
In this article, we will see how we can use BLoc to Theme your app in Flutter. To understand BLoC with a real world example, you can refer to my previous post on BLoC here. Part 1 Part 1 For this demo also we will need the below plugins If you follow my previous tutorial,… Read More »
Whenever you want to show a webpage in your iOS App, use WKWebview instead of UIWebview. You have to supply an url that is complete. ie. with “http” or “https”. If you are using “http”, make sure you enable the “App Transport Security Settings” and add “Allow Arbitrary Loads” to yes. Our Final… Read More »
In this article, I will tell you a simple way to theme a flutter app. Here is a simple code that illustrates that. We use the theme property of each widget to theme it. For example, to theme the whole application, we would do something like this. Take a look at the theme property of… Read More »
Apple has introduced a new API to allow developers to prompt users with rate their apps directly from the app. Old way In the old way, we used to redirect users to the Appstore with the app’s link to rate the app. This makes users to navigate out of the app. This was not an… Read More »
Once you have different Google-Services.json for different targets for your firebase applications, you may be wondering how all can have same filenames and configure for different targets. However the solution is simple. Initial Steps * Create new directory for each directory inside for project folder. Make sure the folder name is different from the target… Read More »
Hi friends, This is essentially a continuation of this post http://www.coderzheaven.com/2018/08/10/how-to-create-a-custom-native-imageview-in-android-for-reactnative/ Now we will listen to a click event from the image we just created. For that we have to add the ClickListener to the image in Android. Add below methods to the java class On the React Native Side The whole java class will… Read More »
Many times we need custom components from native. Here is a simple example on how to create a custom imageview in Android for react native. First we will start with the Android Version Android Create a class that extends SimpleViewManager. Write a setSrc method which accepts the source url from React Native. Implement ‘createViewInstance’ method… Read More »
Image Loading and caching had been a little bit pain in react native. In-fact react native didn’t had native support for caching. But after the recent release, there is now support for caching in iOS only. Still not for Android. You can read more about this from here https://facebook.github.io/react-native/docs/images.html#cache-control-ios-only Now these are the variety of… Read More »
Typically when an device is connected to WiFi, it will be assigned an IP. Here we will see how we can extract the IP of an iOS device. Below is the sample code for that
Apple has introduced a new API in iOS 11 where you can directly connect to a Wi-Fi from with-in the app. For this code to work 1. you need to enable the networking capabilities in your provisioning profile. 2. Once you enable the networking profile in the provisioning profile, you need to regenerate and sign… Read More »
Special characters can be included in string literals using the following escape sequences: The following example shows how to use a few string literals: Swift 4 Escape sequence Meaning \0 Null Character \\ \character \b Backspace \f Form feed \n Newline \r Carriage return \t Horizontal tab \v Vertical tab \’ Single Quote \” Double… Read More »
To retrieve a count of the characters in a string, call the global countElements function and pass in a string as the function’s sole parameter: prints “sampleString has 32 characters” Note : Different Unicode characters and different representations of the same Unicode character can require different amounts of memory to store. Because of this, characters… Read More »
Swift 4 is a type-safe language which means if a part of your code expects a String, you can’t pass it an Int by mistake. As Swift 4 is type-safe, it performs type-checks when compiling your code and flags any mismatched types as errors. Playground execution failed: error: :6:6: error: cannot assign to ‘let’ value… Read More »
Dear Friends, In Today’s post I will show you how to convert a simple hex color string to UIColor in Swift 3. Code