IOS

[Study Notes] [C Language] Two-dimensional array, two-dimensional array of Study Notes1. What is a two-dimensional array? An array can represent the age of a class. What if I want to represent many classes? What is a two-dimensional array? Int ages [

Add admob ads with swift for iOS development Step 1: register an accountFirst, you need to register an account on the admob official website and get the ID number of your advertising agency.For example: Step 2: Download admob SDK1.:

Preliminary understanding of GCD and understanding of GCD // (1) use an asynchronous function to add tasks to the concurrent queue. // conclusion: Enable three subthreads at the same time-(void) test1 {// 1. obtain the global concurrent queue

Gesture and touch, gesture touch UIImageView * imgView = [[UIImageView alloc] initWithFrame: CGRectMake (100,100, 75, 75)]; ImgView. image = [UIImage imageNamed: @ "a"]; ImgView. tag= 200; [Self. view addSubview: imgView]; // Set to allow touch and

Xmpp is connected to the server and authenticated successfully. xmpp is used for authentication. * XMPP features that all requests are implemented through proxy** Because xmpp communicates data through the network server, all requests are submitted

IOS development-Stage 4-Implementation of the push server, and stage 4 of ios   After writing push notification to get device token and get device token, you need to send the token string to the application server, that is, the provider. The

Single-instance mode compatible with ARC and MRC, and compatible with arcmrc I. single-instance implementation under ARC Note: The method of user instantiation controls a single execution, while opening the initialization method of

IOS UINavigationController-navigation bar controller, ioscontroller jump The parent class of any controller is UIViewController, and the navigation bar controller is no exception. It is a subclass of UIViewController. 1. What is a navigation bar

IOS-Autolayout automatic layout, ios-autolayout1. preface • in iOS, most view Controllers contain a large amount of code to set the UI layout and set the horizontal or vertical positions of controls, to ensure that components can be reasonably laid

IOS Bluetooth and ios Bluetooth # Bluetooth ## GameKit ### introduction: * For 'communication' between bluetooth devices, you can only use the 'same application' connection between iOS devices * The connection has expired since 'ios7 '* But GameKit

IOS ----- use addressBook to manage the contact to modify the contact, iosaddressbookUse addressBook to manage contacts and modify contacts Modify a contact first loads an ABRecordRef record from the underlying address book, and then modifies the

Swift-teaches you how to implement UISearchController animation effects on navigation ., This code snippet shows that I found various materials from the internet this week and modified it to get the upper and lower animation effects of the

IOS Status Bar management and ios Status Bar management Before iOS 7: the status bar is managed by UIApplication 1. Hide the status bar: application. statusBarHidden = NO; 2. Set the status bar style: application. statusBarStyle =

UITableView editing and uitableview editing The process of adding, deleting, moving, and basic operations to UITableView. 1. perform the following steps to initialize UITableView: 1> comply with the Protocol 2> set proxy 3> the implementation

IOS UILabel text is automatically aligned in the upper left corner   In iOS, the default UILabel is vertically centered and aligned. If the height set by UILabel is large, the UILabel is automatically centered vertically when the content is

Some common attributes and methods of CoreAnimation core animation, coreanimation Core 1. common attributes: Frame bounds center alpha Transition transform animation effect 2. Common Methods: + (Void) setAnimationDelegate :( id) delegate; + (Void)

IOS-Safe Transmission of user passwords, ios-transmission of user passwords Correct practice: generate a pair of public and private keys for encryption in advance. When the client logs on, it uses the public key to encrypt the user's password and

IOS event mechanism (I), ios event mechanism This article describes how to learn and analyze events in iOS and their transmission mechanisms. In iOS, events are classified into three types: Touch events (single point, multi-touch, and various

ARC-circular reference-solution, arc-reference solution 1. The most common type of code for loop reference.   -(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. optional * firstArray

Tips for solving arc Memory leakage and arc Memory leakage Be sure to note that when running the app, We must care about the memory usage and try not to exceed20 M,Even if many images are to be displayed, they cannot exceed30 M. Therefore, it is a