IOS application loading process analysis
In our daily development, we all know that the execution of an application depends on some underlying basic libraries, such as UIKit, Foundation, etc. So...
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Category: ios
After ios 13.0, the launch Image is deprecated as a launch image
December 17, 2023
by Ellie Taylor
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Delete the LaunchImage folder in images.xcassets. Delete all files with launchImages 2. In BuildSettings AssetCatalogLaunchImageSe
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KVO briefly
December 17, 2023
by Dale Cooke-Bishop
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The concept KVO is an objective-C implementation of the Observer Pattern. The observer object is notified when one of the properties of the observed object...
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The use of SDWebImage in the Cell, after the callback to refresh the tableView and prevent infinite loop
December 17, 2023
by Natalie Gonzalez
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Depending on whether the image URL link is valid, such as the wrong link, more or less characters, and so on, the image will fail...
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IOS WebView and JS interactive encapsulation
December 17, 2023
by Melissa Hunter
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IOS UIWebView was phased out and WKWebView became mainstream. This article encapsulates the WKJSWebView(see section 3 for the code), modifying and adding it to the...
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Analysis of low-level Bits in iOS OC Class (part 2)
December 17, 2023
by Melissa Wong
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In the previous article, we explored properties, instance variables, object methods, and class methods. We can obtain the class_ structure from the bits member variable...
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God operation! This section describes how to run commands to change the default format for saving MAC screenshots
December 17, 2023
by Anika Gill
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Some of my friends found that the default format of the screenshot is PNG, although the image is very clear but very large, so how...
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The nature of iOS OC objects and their ISA explorations
December 17, 2023
by Mary Roberts
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To understand the nature of the OC object and how its underlying structure is implemented, we first need to create a class and use the...
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IOS Exploration Low-level -KVO
December 17, 2023
by Reece Iqbal
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In the daily development process, we often use KVO to carry out some development, so that our development is more simple and direct. So what...
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IOS visual burial point design scheme
December 17, 2023
by Joshua Robinson
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Visual burial point, also known as circle selection burial point, is a data burial point mechanism based on full burial point technology. Through full-burial technology,...
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IOS Low-level – Structure pointer memory alignment
December 17, 2023
by Megan Barker
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In iOS development, we call everything an object. What is the essence of an object? We often talk about memory allocation in project development. How...
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IOS class data structure
December 17, 2023
by Ms. Sandra Henderson
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The internal structure is as follows. Note that objc_class inherits from objc_Object, so there should be an ISA inside. Now let's see what bucket_t is....
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Swift Daily Learning – Generics
December 17, 2023
by 梁信宏
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Generics are commonly used in classes, structs, functions, and enumerations. Their introduction serves as a placeholder, where the type is not known until the function...
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010- Dynamic Message Forwarding process (1)
December 17, 2023
by Martyn Williams
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I created an instance method likeGirls in the FFPerson class, but it wasn't implemented. Then I initialized the FFPerson class in the main.m file and...
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Ios went from OOP to POP object-oriented to protocol oriented
December 17, 2023
by Jonathan Harris-Watts
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In a subclass, the subclass overrides the method of the superclass, and the superclass pointer points to the subclass. Polymorphism adds an extension to a...
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Analysis of iOS Class Loading Process (part 1)
December 17, 2023
by Kaitlyn Bowden-Larsen
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In the previous article, we have analyzed the application loading process, which we are familiar with. We have clearly seen that the dyld library function...
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Probe into the Principle of 001-OC Object (Part I)
December 17, 2023
by Raewyn Buchanan
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What can be learned from this article: How does the alloc method open up memory, and how much memory? What is the relationship between memory...
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IOS – Explore the underlying alloc process
December 17, 2023
by Antonio Robertson PhD
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In iOS, when we want to use an object, we usually call [[NSObject alloc] init] to initialize the object, so what does alloc do?
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IOS project configuration Git ignore file (.gitignore). Gitignore invalid solution
December 17, 2023
by Michael Brown
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Open the terminal CD to your local repository, create the.gitignore file with the.git layer (view hidden files), type "I", see this one below, go into...
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008- Quick lookup of messages (Part 2)
December 17, 2023
by Hilary Reed
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What can be learned from this article about a simplified review of the objc_msgSend process Real machine Debugging (assembly analysis) Real machine Assembly Decomposition (diagram)...
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Custom KVO, automatic release, listening for multiple properties
December 17, 2023
by Ellen Christensen
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Custom KVO, support multi-attribute listening, support automatic release. System KVO needs to write a lot of code, it needs to be manually released, and we...
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GCD API (source.h, workloop.h, data.h
December 17, 2023
by Katy Foster
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The Dispatch Framework provides a set of interfaces for monitoring the activity of low-level system objects (File descriptors, Mach ports, signals, VFS Nodes, etc.), And...
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[iOS development] Block
December 17, 2023
by Jeremy Acevedo
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@[toc] Block Outline Specification What are Blocks? In a nutshell, anonymous functions with automatic variables (local variables) do what their names imply: Block has no...
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IOS class loading principle
December 17, 2023
by Darius Wood
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We introduced dyld in the iOS application loading process analysis, where the important thing dyld does during the loading process is to link to the...
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IOSAPP optimization – details
December 17, 2023
by Renee Nicholas
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Recently, I just saw the book "High performance iOS Application Development" and read the content of Dai Ming's "iOS Development Master class "(this is not...
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OC Underlying principle 7 of the cache insert process and objc_msgSend assembly fast cache lookup
December 17, 2023
by Faiyaz Dugar
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When does the content method start to insert in this chapter? Three ways to initiate Runtime call the underlying objc_msgSend assembler source code analysis Look...
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Analyze the structure of iOS4 classes
December 17, 2023
by Kathy Manning
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1, memory offset 1, normal pointer study a and b value 10 but a and B address is different, integer assignment is value copy a...
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OC underlying principle 12 and so on
December 17, 2023
by Jessica Morales
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In this chapter, we know when the class is loaded. It is also helpful for our startup optimization. We know the difference between RW,ro, rWE...
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006 – cache_t analysis
December 17, 2023
by Paula Eglinton
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What can we learn from this article what is cache_t? Why empty the oldBuckets instead of expanding the space and then append a new cache?...
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Analysis of iOS classification loading process
December 17, 2023
by 段雅芳
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In the previous article iOS Class Loading Process Analysis (Part 2), we have discussed the class loading process, but today we will discuss the classification...
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