Runtime in iOS development

Runtime in iOS development1. Introduction to runtime RunTime is short for RunTime. OC isRuntime MechanismThat is, some mechanisms at runtime, the most important of which is the message mechanism. For C language,Function calling determines which

Core animation-animation group and core Animation

Core animation-animation group and core Animation I have introduced spring animation for core animation. Do you still remember the structure of the core animation? Therefore, an animation group is a core animation, and its initialization method is

Core animation-transfer animation, core animation Transfer

Core animation-transfer animation, core animation Transfer Transfer Animation: CATransition Attribute introduction: ① Type: animation effect of transition Animation KCATransitionFade cross fade transition The new kCATransitionMoveIn view is moved to

Generate a test push certificate for iOS real machine

Generate a test push certificate for iOS real machine 1. First, you want to create a push certificate, which is the same as the previous real machine test certificate. You need to prepare a 99 $ payment account and then log on to the Apple developer

IOS development-use Storyboard for page Jump and value passing

IOS development-use Storyboard for page Jump and value passingTopic StoryBoard Apple officially recommends that we build all the UIS using Storyboard, which is also a mature tool. Using Storyboard to build all interfaces, we can quickly build

IOS study notes 16-database SQLite

IOS study notes 16-database SQLiteI. Databases In project development, data is usually cached offline, for example, offline cache of news data. Offline cache generally stores data in the project sandbox. There are several methods:1.

IosiPhone screen size, resolution, and adaptation

IosiPhone screen size, resolution, and adaptation1. iPhone size DeviceIPhone WidthWidth HighHeight Diagonal LineDiagonal Logical resolution (point) Scale Factor Device resolution (pixel) PPI 3GS 2.4 inches (6

IOS platform Cocos2d-x Project access third-party SDK (is the problem of static library access)

IOS platform Cocos2d-x Project access third-party SDK (is the problem of static library access)Solution: -Force_load path/to/your/libWeiboSDK. a instead of the-ObjC and-all_load provided by him. The following describes in detail   Here is a special

IOS app sharing Extension

IOS app sharing Extension There are several common methods to share content between different apps on the iOS platform:The first is to use AirDrop to share documents and data between apps of different devices;The second type is to define a URL

Animation in iOS

Animation in iOS This article mainly introduces Core iOS Animation: Core Animation, UIView Animation, Block Animation, UIImageView Frame Animation. Core Animation CoreAnimationUIView Animation Block Animation UIImageView Frame Animation Directory [-]

FAQs about the use of AFNetworking 3.0 in iOS development

FAQs about the use of AFNetworking 3.0 in iOS development1. Many beginners directly request requests from afn instances where network requests are used, which makes it difficult to maintain code in the future. [[AFHTTPSessionManager manager]

Introduction to iOS instruments

Introduction to iOS instrumentsIntroduction to iOS instruments When writing code, we often need some tools to help us analyze and locate problems to adapt and optimize the code. In terms of iOS development, XCode provides a series of tools to help

Summary of iOS primary errors and warnings

Summary of iOS primary errors and warnings This is an article suitable for beginners to learn and summarizes some very elementary errors and warnings.Error Message 1. error: 'xxx' undeclared (first use in this function) Not Defined yet (used for the

IOS UIimage stretching Methods

IOS UIimage stretching MethodsMethod 1   //-(UIImage *) stretchableImageWithLeftCapWidth :( NSInteger) leftCapWidth topCapHeight :( NSInteger) topCapHeight _ TVOS_PROHIBITED; // leftCapWidth: no stretch area on the left // topCapHeight: UIImage *

IOS database SQLite

IOS database SQLiteSQLite is a lightweight embedded database. Android and iOS use SQLite databases. Its features: it occupies very low resources. In embedded devices, it may only require several hundred KB of memory. It processes faster than MySQL

Objective-C coding specification for iOS development

Objective-C coding specification for iOS development Abstract: The Objective-C encoding style of each user is inconsistent, so it is difficult to maintain Code consistency and Code Review. To ensure the elegance, consistency, and ease of coding of

IOS development practice tutorial (3) upload an AppStore

IOS development practice tutorial (3) upload an AppStore The previous blog introduced how to debug a real machine. After debugging a real machine without any bugs, you can submit it to the AppStore for review.Go to the Developer Center ID of the App

IOS-UIView Coordinate System Conversion-convertRect toview

IOS-UIView Coordinate System Conversion-convertRect toview Coordinate Transformation in iOS -- UIView // convert the pixel point from the view where the point is located to the target view, and return the pixel value-(CGPoint) convertPoint (CGPoint)

Build a local svn server with SVN built in Xcode

Build a local svn server with SVN built in Xcode 1. Open the terminal and create the svn resource library   Svnadmin create/Users/huton2/Desktop/SVNserver The SVNserver here is the name of the SVN repository, so I am too lazy to create an empty

IOS Quartz2D uses UIColor to generate images,

IOS Quartz2D uses UIColor to generate images, Normal generation Sample Code: // Here we implement the normal Image Generation Method-(void) drawRect :( CGRect) rect {CGRect cxRect = CGRectMake (0, 0,100,100); uigraphicsbeginimagecontextwitexceptions

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