Tag: objective-c

ios

IOS project startup and startup time optimization:

December 13, 2023

by Dawn Becker

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3. PrincipalClassName: default to nil, it is represented as UIApplication. Passing nil has the same effect as passing UIApplication; The argument passed in here must...

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ios

Exploring the Runtime principle (5) — The nature of Super

December 13, 2023

by Neil Evans

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Runtime Principles (1) -- An in-depth understanding of ISA (2) -- an in-depth analysis of the Class structure of the Runtime principles (3) -- OC...

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ios

IOS explore | 6 Equality (= =, isEqual, isEqualToString) explore in detail

December 13, 2023

by Joshua Collins

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During development, we often need to determine whether an object is the object we need to work with and whether it meets our requirements for...

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ios

IOS a set of user behavior collection implementation scheme

December 13, 2023

by Jessica Morales

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This solution can realize behavior statistics, combined with crash statistics, can quickly find the root cause of online problems. CocoaLumberjack is a very useful logging...

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ios

Elegant encapsulation of custom buttons – Swift

December 13, 2023

by Kiaan Dhawan

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Contents 1. What problem does the custom button solve 2. Encapsulate ideas and step on the pit 3. What problem does the customization button solve?...

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ios

[iOS Features]- Jump to other system Settings

December 13, 2023

by 袁惠如

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Add URL Schemes for prefs urlhttps://www.jianshu.com/p/71064763bbef

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ios

Message mechanism

December 13, 2023

by Luis Bishop

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OC method calls are converted to objc_msgSend function calls. The objc_msgSend execution process is roughly divided into three steps: message sending dynamic method parsing Message...

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ios

OC- Underlying Principle -38- componentization (1) Scheme

December 13, 2023

by 金郁婷

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When the project is coming due to various requirements, if the various modules at this time are called each other, that is, there is a...

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ios

Start with reference counting in iOS

December 13, 2023

by 洪冠霖

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Isa is explained in detail in the iOS Runtime article. Starting with the ARM64 architecture, Apple has optimized ISA to become a common (Union) architecture,...

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ios

Xcode 9 is a new feature in iOS 11.

December 13, 2023

by 丁雅筑

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With the release of iOS 11, Xcode 9 has been released. This time, Xcode 9 has a whole bunch of updates, which is great news...

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ios

UIScrollView inserts a TableView or CollectionView to implement a drop-down refresh

December 12, 2023

by Tara Kale

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The main requirements are shown above. 2. Implement - (void) SC of outermost ScrollView and inner CollectionView respectively

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ios

You can spot your cat on your iPhone

December 12, 2023

by Nicole Jones

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Suck the cat with code! How to deal with a cat who can't pronounce her name? In order to facilitate the vast number of defecators...

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ios

The realization of the AutoreleasePool

December 12, 2023

by Barbara Thomas

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In MRC, call [obj autoRelease] to delay memory release; In ARC, objects that call the autoRelease method are automatically added to the nearest autorelease pool...

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ios

Make your project support WebP images

December 12, 2023

by Jessica Bridges

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Because libwebp(0.5.1) is a Google library, downloading requires climbing walls. Libwebp (0.5.1) is a Google library, so you need to download libwebp manually. The configuration...

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ios

Have you encountered these experiences in iOS development (part 2)

December 12, 2023

by 段雅芳

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Preface: there is no original permission in the nuggets community before, so this article was shared through the link before, now there is original permission...

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ios

Swift calls objective-C’s mutable argument function

December 12, 2023

by Jeremy Acevedo

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This question is a friend asked me how to write, at first I refused. I think this kind of thing can be found on the...

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ios

Analyze the memory structure of the OC object and its creation process

December 12, 2023

by Dr. Russell Brown

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Oc object pointer is actually a structure pointer, that is, oc object into c++ code is actually a structure. Struct Person_IMPL (struct Person_IMPL, struct Person_IMPL,...

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ios

Loading principle of Category method

December 12, 2023

by Joseph Young

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Category is a language feature added after Objective-C 2.0. The main purpose of a category is to add methods to existing classes. Mach -O analysis...

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ios

Writing high quality Objective-C code for iOS

December 12, 2023

by Robert Martin

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These articles are part of an effort to delve into Effective Objective-C 2.0. They include opinions from the author and from the editor, as well...

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ios

Basic Principles of iOS (1) Objective-C nature

December 12, 2023

by Leslie Robertson

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An OC object is laid out in such a way that the system creates a space in the heap to hold the object, which also...

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ios

[iOS features]- Summary 2

December 12, 2023

by Louise Evans

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1, set the UILabel line spacing 2, when using the performSelector: withObject: withObject: afterDelay: method, need to incoming multi-parameter problem 3, UILabel display font 4...

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ios

Old Driver iOS Weekly #7

December 12, 2023

by Juan Barber Jr.

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This week is the Spring Festival, the weekly newspaper will not be updated during the Spring Festival, wish you all have a good year. Swift...

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ios

multithreading

December 12, 2023

by Amira Goda

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There are many common multithreading apis: NSThread, GCD, NSOperation, especially GCD and NSOperation, which have very powerful functions. When referring to threads, it will refer...

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ios

IOS limits UITextView length, emoji input

December 12, 2023

by Alyssa Mendoza

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```OC - (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText

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ios

IOS Basic Analysis – Block (3)

December 12, 2023

by Gerald Watkins

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This is the 30th day of my participation in The August Wen Challenge. We have analyzed the underlying structure of the block. Next, we will...

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ios

WKWebView details (two) – WebKit framework understanding

December 12, 2023

by 王家銘

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WKWebView provides far more classes than UIWebView and can achieve richer functions. It has its own framework, WebKit, which contains all related classes. This article...

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ios

ObjC low-level exploration – Struct memory alignment

December 12, 2023

by Nigel Booth

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So let's start with an interesting example, think about his size problem where we have two structure variables p1,p2, and the members are the same,...

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ios

IOS – Circular reference

December 11, 2023

by Jeffery Pineda

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A circular reference occurs when two objects, A and B, strongly reference each other. When A is released, B must be released, and WHEN B...

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ios

Alloc && init

December 11, 2023

by James Ball

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NSObject Class, objc_object, and ID are all defined based on objc_class. An NSObject object is a structure pointer of type objc_Object *all

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ios

Efficient transfer of camera data using cache queue design in C++

December 11, 2023

by Aniruddh Sule

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Doing live function, for example, sometimes we may have to the camera to capture the image data to do some additional operations (such as Crop,...

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