SwiftUI is well-known for its user-friendliness and high development efficiency, which are its main attractions. However, its inherent opacity presents significant challenges for developers in terms of optimization and effective debugging when issues arise.
Principles of SwiftUI
- Lifecycle of SwiftUI Views
This article introduces the author's understanding and research on SwiftUI views and the lifecycle of SwiftUI views for discussion.
- ViewBuilder Research: Mastering Result Builders
This article explains the use of result builders in Swift, including custom container creation, modifier implementation, version compatibility, limitations, and best practices.
- ViewBuilder Research: Creating a ViewBuilder Imitation
This article is a guide to using ViewBuilder in SwiftUI. Topics include creating a ViewBuilder imitation, checking API availability, using AnyView, and implementing view modifiers. Code examples and explanations are provided throughout.
- Building Stable Preview Views: How SwiftUI Previews Work
This article will explain the SwiftUI preview function's implementation mechanism and its limitations.
Optimization
- How to Avoid Repeating SwiftUI View Updates
This article will guide you in optimizing view calculations in SwiftUI. The methods include optimizing construction parameters, breaking down views, implementing Equatable, and controlling event sources. Understanding these principles is crucial for excelling in SwiftUI development.
- Demystifying SwiftUI List Responsiveness: Best Practices for Large Datasets
This article will demonstrate the approach to identifying and resolving issues in SwiftUI through a case study of optimizing a list view.
- Memory Optimization Journey for a SwiftUI + Core Data App
This article guides readers on enhancing memory performance for SwiftUI + Core Data apps using a sample.
- A Deep Dive Into Observation: A New Way to Boost SwiftUI Performance
This article will comprehensively and thoroughly explore the Observation framework in a Q&A format, including its reasons for creation, usage methods, workings, and precautions.
- Tips and Considerations for Using Lazy Containers in SwiftUI
In the SwiftUI framework, lazy layout containers such as List and LazyVStack provide a method for efficiently displaying large datasets. These containers are ingeniously designed to dynamically build and load views only when necessary, thereby significantly optimizing the app's performance and memory efficiency. This article will explore some practical tips and important considerations aimed at enhancing developers' ability to leverage SwiftUI's lazy containers for improved app responsiveness and resource management.
Debugging
- Cracking the Code: The Mysterious @State Injection Mechanism
This article will explore State injection optimization mechanism, the generation timing of modal views (Sheet, FullScreenCover), and data coordination between different contexts (mutually independent view trees) through a reproducible piece of "mysterious code".
- Common Pitfalls Caused by Delayed State Updates in SwiftUI
This article will explore two serious issues in SwiftUI caused by the failure to implement reactive programming principles, and provide corresponding solutions. Include after canceling the Sheet by gesture, quickly swiping right on the navigation container causes the application to lock up; and returning to the upper-level view while scrolling causes the application to crash.
- The @State Specter: Analyzing a Bug in Multi-Window SwiftUI Applications
In this article, we will delve into a bug affecting SwiftUI applications in multi-window mode and propose effective temporary solutions. We will not only detail the manifestation of this issue but also share the entire process from discovery to diagnosis, and finally, resolution. Through this exploration, our aim is to offer guidance to developers facing similar challenges, helping them better navigate the complexities of SwiftUI development.
- SwiftUI geometryGroup() Guide: From Theory to Practice
This article will introduce the concept and usage of geometryGroup(), as well as how to handle anomalies in older versions of SwiftUI without using geometryGroup().
- How to Preview a SwiftUI View with Core Data Elements in Xcode
This article will explore some of the reasons behind SwiftUI preview crashes, how to avoid similar crashes in future development, and how to safely and reliably preview SwiftUI views that contain Core Data elements in Xcode.
