iOS - #NeedOne (Page 2)

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iOS

iOS section focuses on a range of development topics related to Swift, iOS, Xcode, macOS, SwiftUI, Cocoa Touch, App Development, Swift Package Manager, Swift Playgrounds, SourceKit-LSP, SwiftNIO, Swift Web Frameworks, and Swift on the Server.

Have you tried XCTUnwrap before?

Have you tried XCTUnwrap before?

What is XCTUnwrap and how to use it to help you effectively while you are doing the unit test? XCTUnwrap is a utility function that is used in unit tests to unwrap optional values. It is part of the XCTest framework, which is the default testing framework for iOS and

PLIST file in iOS

PLIST file in iOS

A Property List (PLIST) file is a file format used by macOS and iOS to store serialized data. It is often used to store data such as user preferences, settings, and other information that needs to be stored persistently. PLIST files can either be stored in a binary format and

Create Property Wrapper in Swift

Create Property Wrapper in Swift

What is Property Wrapper Property wrapper are a language feature that allows you to wrap a piece of code around a property in Swift world, which can help us to add additional behavior or functionality to that property. The benefits of it is to reduce the code repetition. Property wrapper

Workplace, Project, Scheme and Target in iOS development

Workplace, Project, Scheme and Target in iOS development

Many of us have seen workspace, project, target and scheme quite often while doing the iOS development, but what are they exactly and how are they related with each other? Workplace Workplace in Xcode is a tool for managing and organizing your project files. It allows you to easily navigate

Equatable and Comparable in Swift

Equatable and Comparable in Swift

It is quite common that we are required to compare two custom objects in Swift, luckily Swift has provided some built-in protocol allows us to do this in a "swift" way. Equatable In Swift, Equatable is a protocol that allows us to determine whether two reference objects are

Difference between layoutIfNeeded vs. setNeedsLayout

Difference between layoutIfNeeded vs. setNeedsLayout

As many of iOS developer known, layoutIfNeeded and setNeedsLayout are two methods that can be used to update the layout of a view and its subviews. But what are their differences? Today's article will help this out: LayoutIfNeeded layoutIfNeeded is a method that forces the view to immediately

Constructor Injection, Property Injection vs. Method Injection

Constructor Injection, Property Injection vs. Method Injection

Dependency Injection is a design pattern that is providing another object with its dependencies, instead of having the object created or managed themselves. There are three main types of dependency injection: constructor injection, property injection, and method injection. Constructor injection As the name indicated, constructor injection is passing the dependencies

ContentHugging vs. ContentCompressionResistance in UIStackView

ContentHugging vs. ContentCompressionResistance in UIStackView

In Swift, it is quite common to see ContentHugging and ContentCompressionResistance either when we are using the storyboard or code to render the user interfaces in UIStackView. Those 2 properties determine how a view can automatically adjust its size with the content give, such as dynamic & long text, images

A summary of use enum in Swift

A summary of use enum in Swift

Enumeration type is a common type in many programming languages, which normally presents a set of limited status for a program, such as list all the directions for a compass: enum CompassPoint { case north case south case east case west } However, enum provides more features than that: 1. Static values

Use Extension in Swift

Use Extension in Swift

Extension is a great feature in Swift, which can help us to create helper/utility variables and method, and etc. Use extension to conform protocols It is quite common to use protocols in any project, with extension, we can make the code more organized. extension CollectionViewController: UITableViewDelegate, UITableViewDataSource { // necessary methods

Property in Swift

Property in Swift

Unlike other programming languages, there are three types properties in Swift. Stored Properties They are constants or variables of a class, and part of the class instances that used to store values. One of the examples is the model class. class Car { var name: String var price: Float = 0.0

How to check whether a mobile device is muted or not on iPhone/iPad

How to check whether a mobile device is muted or not on iPhone/iPad

On iOS devices, there are mainly two types of sounds: * Ringtones and reminders: Including system sounds such as phone calls, text messages, notifications (also including key tones, lock sounds, which can be set in the settings to enable or disable), they are controlled by the physical mute switch key, that

Init vs Convenience init in Swift

Initializers, also known as constructors in other programming languages, have two types: Designated init and Convenience init. They are used to initialize properties or customize a variable or object for classes or structs. Designated init This type of the Initializer is frequently seen in Swift class, also named as primary

iPhone/iPad Redeem promo code to get free App in 2022

This will happen when developers decides to give out some free apps, which sometimes you will see the promo code like this EAJXJEXL7MJH. As many of you might know how to redeem that code on App store, but there still someone are pretty new to it. In order to redeem

Days Gone Widget

Dear time master, Thanks for downloading this app. Time travels fast, with days gone app we can put a nice-looking widget on your Home Screen so we would know where you are during the year. So displays the yearly progress as a widget. Features: * Support 10 color schemas * Super easy

Keyword Lazy in Swift

Keyword Lazy in Swift

lazy variables are variables will be computed until accessing. In other words, lazy variables won't have the real value until get called/used. As lazy variables can be re-assigned, so it can't be used on constants which normally defined by let. One example of using lazy

Constants in Objective-C

Constants in Objective-C

Recently I was working on a legacy project written in Objective-C, which reminded me of the early days when working on Objective-C projects. In the code I saw few things like the following which defines a constant: #define car_price 300 #define creates a macro which simply do the replacement

How to use Swift Package Manager

How to use Swift Package Manager

What is Swift Package? According to Apple's doc: * Swift packages are reusable components of Swift, Objective-C, Objective-C++, C, or C++ code that developers can use in their projects. They bundle source files, binaries, and resources in a way that’s easy to use in your app’s project.

VIP Architecture in Swift with easy explanation

VIP Architecture in Swift with easy explanation

Recently I joined a project where the architecture follows the Clean-Swift VIP Pattern. This article is an overview and some thoughts from a mobile developer’s perspective who have NEVER touched the VIP architecture before. This article will show the basic concepts of VIP Architecture and how are they work,

SwiftLint: Writing good quality code in Swift

SwiftLint: Writing good quality code in Swift

SwiftLint is a programming guide tool which can automatically check the code quality with certain rules such as https://github.com/github/swift-style-guide. The article will cover: * How to install and configure SwiftLint * How to use SwiftLint * Customise SwiftLint rules SwiftLint installation There are two ways of installations that we

What is Bitcode in iOS

What is Bitcode in iOS

You may compile and build iOS app using Swift and/or Objective-C every day, and you've probably you heard of Bitcode multiple times. So what exactly is the Bitcode, as some of you might see the configuration in the build phrase (Target -> Build Settings ->

iOS14: How to show all your photos on WhatsApp

iOS14: How to show all your photos on WhatsApp, instagram, facebook

What is Codable in Swift

What is Codable in Swift

codable in swift, and Decoeable, encodable example

Complete guide on custom class/struct comparison

Complete guide on custom class/struct comparison

swift compare custom class or custom struct

Extract the debug or crash log from iPhone/iPad

Extract the debug or crash log from iPhone/iPad

For Real devices 1. Open Settings app 2. Tap Privacy 3. Tap Analytics & Improvements 4. Tap Analytics Data 5. There might be quite a lot of Data, so try to pinpoint the possible one using date: 6. Tap the Share button at the top right corner, you can share