iOS - #NeedOne

Install specific iOS beta on simulator

Apple release the new iOS SDK every day, as the developer, we want to test our apps on those new SDK before they are officially released. For example, we want

Needone

16 Sep 2023 · 1 min read

How to do a deep cleaning for pod

If you are like me, the project is still using the pod to manage the libraries and frameworks. We need to clean the projects from time to time. The following

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19 Jul 2023 · 1 min read

Nested class in Swift

A nested class in Swift is a class that is defined within another class. Some key features: * Nested class have access to local variables or constants of the outer class

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17 Jul 2023 · 1 min read

2 hours to master RxSwift - Part 2

In this article we will dig a bit more depth in some core concepts on 2 hours to master RxSwift - Part 1. Section 1: Observable Like mentioned in the

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1 May 2023 · 6 min read

2 hours to master RxSwift - Part 3

Introduction In the previous post: 2 hours to master RxSwift - Part 1 (needone.app) and 2 hours to master RxSwift - Part 2 (needone.app), we get to know

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11 Apr 2023 · 3 min read

2 hours to master RxSwift - Part 1

a simple introudction on rxswift, including what is rxswift, how to use it and a quick example (with swift code) on demo that.

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14 Mar 2023 · 8 min read

Generic type vs. Any in Swift

Generic type In Swift, a generic type is a placeholder for a specific type that is specified when the generic type is used. A generic type allows you to write

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7 Mar 2023 · 2 min read

indirect enum in Swift

An indirect enum in Swift is an enum that can be used to define a recursive data structure. This means that one or more of its cases can refer to

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4 Mar 2023 · 1 min read

UITraitCollection

UITraitCollection is a class in the UIKit framework that defines a set of interface traits that specify the environment in which your app is running. These traits include the device’

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2 Mar 2023 · 2 min read

UIKit vs. SwiftUI - A general discussion

UIKit and SwiftUI are two different frameworks for building user interfaces on Apple platforms. UIKit UIKit is the older of the two frameworks, and has been around since the early

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28 Feb 2023 · 2 min read

Sort custom objects by property in Swift

Many of us have met the situation that we have an array/list of custom objects, and we want them can be sorted in a specific order. For example, we

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18 Feb 2023 · 1 min read

Format currency in Swift

Recently I have done quite an amount of work on formatting currency in Swift project, here are some tricks on how to format number in Swift: Format currency with auto

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14 Feb 2023 · 1 min read

Get the current week in Swift

To get the current week in Swift 5, you can use the Calendar and DateComponents classes to calculate the week number for the current date. Here's an example of how

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9 Feb 2023 · 1 min read

SceneDelegate

In iOS, the SceneDelegate is a class that is responsible for managing the scenes in your app. A scene is a discrete unit of your app's user interface, such as

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7 Feb 2023 · 2 min read

Data Racing in Swift

A data race in Swift occurs when two or more threads access the same memory location simultaneously and at least one of them is writing to it, without proper synchronization.

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4 Feb 2023 · 2 min read

@AppStorage vs. @UserDefault in SwiftUI

Both the @AppStorage and @UserDefault property wrappers in SwiftUI allow you to store and retrieve data using UserDefaults. However, there are a few key differences between the two: @AppStorage In

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31 Jan 2023 · 2 min read

Get location coordinates using CLLocationManager in Swift

To get the location (latitude and longitude) of a device in Swift, you can use the Core Location framework, which is an official library from Apple. Only 2 steps are

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28 Jan 2023 · 2 min read

Encode URL in Swift

It is quite common to see that we can correctly set up the HTTP header, token, body and POST/GET methods in our iOS code, but we still can't get

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26 Jan 2023 · 2 min read