IOS

IOS-ASIHTTPRequest cache mechanism, ios-asihttprequestThird-party network request library * For network requests, we can use the NSURLRequest and NSURLConnection provided by the system to implement our basic functions. * However, sometimes we use

Double pointer in iOS   Second-level pointer: it is also called a double pointer. the pointer is used as a parameter. It is mostly used after the setPeople method is executed when the function needs to change the pointer, the people Pointer Points

IOS animation and drawingDirectory: UIView animation sub-view flip animation UIImageView animation CATransition animation Core Graphics drawing: (line, rectangle, curve, text, image) CALayer Core Animation: (Key Frame Animation, single animation,

IOS coredata avoid adding duplicate data, ioscoredata First, you need to know that the item in your data is unique, and then process the unique query and insert order. During the query, the first time the array is null, the array content is 0.

Json data parsing and json Parsing Json file: { "count":"3", "friend": [ { "name": "zhangsan", "pwd": "12345", "nickName": "zs", "sex": "nan" }, {

IOS-resumable upload and ios-resumable upload * Mobile clients are widely used for uploading and downloading when interacting with servers. * When we download an object, we can pause the download when we click pause. When we click Download, we can

Network start --- multithreading --- thread security (understanding) (4), --- Multithreading 1 // 2/** 3 * pay attention to thread 4 1. do not enable too many threads at the same time. (1-3 threads can be used. A maximum of 5 threads can be used.)

Company project adaptation IOS9 summary, adaptation ios9 Summary 1. JSONKit The project reports an error in the xcode7 IOS9 development environment. JSONSring and JSONData cannot be used. There is no problem on the real machine. put and post data on

How to Write Objective-C language elegantly ?, Compile objective-c① Reduce abbreviations The abbreviation is used only for general technical terms, suchURLYou cannot create your own name abbreviations, suchCtr,Msg. The name should be longer than

UIButton + Block, uibuttonblock A UIButton Category that uses block to process UIControlEvent events, such as commonly used TouchUpInside.The code is not original and can be seen on the Internet. It is used in actual projects and no problems have

IOS-Http: GET: POST, ios-httpgetpostI. Overview * The HTTP/1.1 protocol defines the eight request methods: OPTIONS, HEAD, GET, POST, PUT, DELETE, TRACE, and CONNECT. * The GET method and POST method are the most frequently used network request

Determine the iOS device modelNSString * clientModel () {NSString * model = [[UIDevice currentDevice] model]; if ([model isEqualToString: @ "iPhone1, 1"]) return @ "iPhone 1G "; if ([model isEqualToString: @ "iPhone1, 2"]) return @ "iPhone 3G"; if ([

System sound & warning sound & vibration, menghua system sound In order to attract the user's attention when issuing a warning, it is often accompanied by a prompt sound vibration. the system audio service provides an interface for playing audio

"Get verification code" and "get verification code" When it comes to the user registration function, many apps now use mobile phone numbers as the basis for registration, which naturally cannot be separated from mobile phone verification codes. To

Explanation of NSCharacterSet and explanation of nscharacterset     The meanings of various enumeration types in NSCharacterSet are as follows: 1 controlCharacterSet // controller 2 whitespaceCharacterSet 3 character // space newline 4

[Reading Notes] iOS-memory management, ios-memory management Cocoa memory management: retain, release and autorelease. Each object maintains a reserved counter. When an object is created, its reserved counter value is 1; when the object is

What does copy mean? 1) For non-container objects such as NSString and NSNumber NSString * str1 = @ "abc ";NSString * str2 = [str1 copy]; // The address is the same as that of Str1.NSString * str3 = [str1 mutableCopy]; // The address is different

IOS study notes, ios notes 1. Sqlite3 database creation sequence: 2. Sqlite3 database table creation sequence: 3. The update and delete operation sequence of the Sqlite3 database is similar to that of the table creation. You only need to change

Third-party map of iOS-AMAP (navigation sdk Path Planning), ios AMAP AMapNaviManager class is used to obtain travel information through Path Planning of amapapnavimanager. Then, call the following method: /*! @ Brief: calculates the coordinates of

There is no NavigationBar to a pitfall when there is a NavigationBar view switch, navigationbar View NavigationController is the most common in iOS apps. It can be said that it is essential for every App. Since iOS7, the system's built-in