IOS

[Code Note] iOS-Add button on the right and code note ios-button 1. Engineering Drawing. Ii. Code. ViewController. m -(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. // Add the

NSDictionary initialization for iOS, iosnsdictionary Recently, when I was working on a project, I encountered a very bad crash because of the nil pointer crash during NSDictionary initialization. Assume that we want to initialize an NSDictionary of {

LoadView usage summary and loadView usage SummaryI,LoadView1.When Will loadView be called? The loadView method is called every time you access the view (such as controller. view and self. view) of UIViewController and the view is nil. 2. What is the

Touch detection for 3D models in iOS11 AR scenarios, ios11ar AR in the latest iOS11 is particularly popular. I also went to the Internet to find a few demos. The core code is nothing more than the following: // AR view: displays the 3D interface @

[Code Note] iOS-generate random number, note ios-Random Number I. Code. -(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. NSLog (@ "-- generate a random number --- % @", [self

NSThread and nsthread for iOS MultithreadingI. Basic concepts of NSThread NSThread is a lightweight multi-threaded programming method based on threads (compared with GCD and NSOperation). An NSThread object represents a thread and needs to manually

Let's take a look at a problem with IOS Memory leakage. Many iOS developers are concerned about memory leakage. In actual development work, we need to know whether the program has memory leakage, and then find out which line of code has leaked

There are several basic plotting methods and several plotting Methods 1. drawRect: Rewrite the UIView subclass 2. drawLayer: inContext: CALayer sets proxy (this is a proxy method) 3. drawInContext: CALayer subclass Rewriting 4. Use the image

[Code Note] iOS-removes spaces in NSString and ios-nsstring I. Code. -(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. NSString * string = @ "123 456 789"; NSLog (@ "-- string --- % @

The implementation principle of infinite carousel images and the principle of carousel Images Infinite carousel images are believed to be a common feature of many developers. Here we will summarize the implementation principles of the two commonly

Use iconfont in iOS and iconfont in iosHow to use custom FontsBefore talking about the icon font, Let's first look at how common custom fonts are used in ios. The two principles are the same. The following uses KaushanScript-Regular as an

How to publish an App to an Apple App Store or appstore Original Online transcription   Release ProcedureLog onto the apple Developer Center http://developer.apple.com ($99 account)Go to itunes connectChoose Manage Your AppsSelect Add New AppEnter

IOS-solve the problem that the iOS 10 App is scaled up when it is started, ios-ios100. Preface when the iOS10 App is started, the App icon is enlarged and filled with the iPad Application shows app icon as launch screen in iOS 10 After you click

[Code Note] iOS-converts the specific characters in the string to red, ios-string I ,. Ii. Code. ViewController. m -(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. UILabel *

IOS development ~ Creation of static libraries including armv7, armv7s, arm64, i386, and x86_64, a, and FrameWork, and armv7armv7s   Armv7, armv7s, arm64, i386, x86_64 I. Summary In normal project development, the static library. a provided by a

For iOS, modify weak, assign, and weakassign for proxy 1. for strong: delegate is strongly referenced by this object. The delegate object cannot be destroyed by the outside world, leading to Retain Cycles) Because we usually proxy the current

[Code Note] iOS-UIAlertView is automatically disabled, and uialertview is disabled. I ,. Ii. Code. RootViewController. h #import @interface RootViewController : UIViewController@end   RootViewController. m -(Void) viewDidLoad {[super viewDidLoad]; /

The webview Method for iOS to load webpages, files, and html, UIWebView is a box used to load webpage data. UIWebView can be used to load pdf, word, doc, and other files There are two ways to generate webview: 1. Drag and Drop through storyboard 2.

IOS development -- Differences Between objectForKey and valueForKey in NSDictionary, objectforkey The NSDictionary has two methods: objectForKey: And valueForKey:. What are the differences between the two methods? First, we can see the definitions

[Code note] the iOS-UIActionSheet font cannot be modified. I ,. Ii. Code. RootViewController. h #import @interface RootViewController : UIViewController@end   RootViewController. m -(Void) Authorization :( NSSet *) touches withEvent :( UIEvent *)