IOS

IOS development class forward reference In addition to class extension, category also has powerful forward reference capabilities. For some private methods (not in. methods declared in the H file) if we want to use them, some of them use

React Native Communication Mechanism details, reactnative Source: Bang blog (@ bang) Welcome to share Original Articles with bole headlines React Native is the just-open-source framework of facebook. It can be used to develop Native apps directly

Jsonj parses network data and jsonj parses the network // Load network data locally NSString * strUrl = @ "http: // 10.0.8.8/sns/my/user_list.php? Page = 1 & number = 5 "; NSURL * url = [NSURL URLWithString: strUrl]; NSData * data = [[NSData

Custom Singleton for iOS development: custom for iOS development Custom Singleton for iOS development Here I use macros: //. H# Define single_interface (class) + (class *) shared # class;//. M// \ Indicates that the next row also belongs to a macro./

CoreLocation --- location information in iOS In iOS, you can use CoreLocation to obtain the user's current location and device mobile information.Basic Steps: import CoreLocation. ViewController inherits the CLLocationManagerDelegate Protocol to

IOS deep replication and light Replication Sample Code for copying:   NSMutableArray *mArray = [NSMutableArray arrayWithObjects: [NSMutableString stringWithString: @"origionA"],

Weak OC syntax and oc syntax The OC checks whether the object implements the corresponding method during the running process. Only warning is given for all compilation processes: the corresponding method may not be found;If a program encounters an

IOS --- UITableViewCell adaptive Row Height (non-AutoLayout) As shown in the question, this program uses the UITableView self-adaptive Row Height written by non-AutoLayout, and then I will write a small demo of self-adaptive Row Height Based on

Use the titleEdgeInsets attribute of UIButton and imageEdgeInsets attribute to arrange the image text as required,The button can set the titleEdgeInsets attribute and imageEdgeInsets attribute to adjust the relative positions of the image and label.

Common Xcode shortcuts and xcode shortcuts New Shift + cmd + n create a project Cmd + n create a file   View Option + cmd + press enter to open the assistant editor Cmd + press enter to display the Main Window Cmd + 0 navigation window Option + cmd +

Supports horizontal screen rotation for iOS devices Ios devices support rotation methods: 1. Modify the info of the project. the value of "Supported interface orientations" in plist (generally, you can check the Taget-> General-> Deployment Info->

Singleton design mode in IOS The Singleton design mode is a very important and common design mode in IOS development. It is designed to always return an instance regardless of the number of requests, that is, a class has only one instance. The

Solve the Click Event and UIScrollView event of uiscrollview There are currently two methods The first method is to use Category to extend the UIScrollView object and add a touch event. (It is not recommended that the extension be inconvenient in

Runloopautorelease and runloopautorelease Is there any problem with the code below for such an ios interview question? If yes? How can this problem be solved? for (int i = 0 ; i Concept of local release pool and RunLoop release pool: The RunLoop of

Objetive-C learning _ GCD learning notes, objetive-c_gcd GCD: Apple's solution for multi-core parallel operations GCD automatically manages the thread lifecycle (creating threads, scheduling tasks, and destroying threads) Queue: used to store tasks (

Custom Control Development set for iOS development series-custom status bar message prompt control development In actual development, message prompts are common requirements. In order to personalize and have simple UI status bar prompts, it is a

Custom Control Development set for iOS development series-custom UITableViewCell slide Menu Control Development In many apps, UITableViewCell slides left and displays menus such as the system delete button. However, the system can only have one menu,

IOS project-debut and ios project debut I have been reading about IOS projects all the time recently. Today, I finally ushered in my first IOS project. Unfortunately, this project is not developed from the beginning, but is maintained and added with

UIButton sets the layer according to different States, and uibutton sets the layer In this case, KVO is used to listen for changes to the highlighted attribute of the button. In the listener callback, the layer is set according to the property value

Objective-C learner _ memory management learning notes, objectivec Memory Management   Memory leakage: the discarded objects continue to exist after the lifecycle is exceeded. Memory Management: adhere to the pairing principle. When