IOS

How to create multiple sub-projects in iOS Here, we will record how to create multiple sub-projects in iOS. First, create two static databases. Add the static library to the project:   Add static library If the header file of the

IOS-Use of AVAudioSession-playing music in the background, ios-avaudiosession1. Preface • AVAudioSession is a singleton that can be directly used without instantiation. AVAudioSession plays an important role in various audio environments. •

Ios development-KVO analysis, ios-kvo Analysis Target: Listen to what is added to the NSMutableArray object   The Code is as follows:C code -(Void) viewDidLoad { [Super viewDidLoad]; Self. dataArray = [NSMutableArray arrayWithObject: @ "1"]; [Self

IOS. OC.03 KVO-key-value observer, ios. oc.03kvo- KVO Key, Value, Observing, that is, Key-Value observer. It provides such a mechanism that when the attributes of a specified object change, KVO automatically notifies the corresponding

Implementation of the OC Singleton mode and the OC Mode SingleClass. m # Import @ class SingleClass; static SingleClass * instance = nil; @ interface SingleClass: NSObject + (instancetype) using instance; @ end @ implementation SingleClass //

IOS physical Engine Currently, the well-known 2D physical engines include Box2d and Chipmunk, which are cross-platform. However, Apple also encapsulates a physical engine. UIDynamic is a new technology introduced from iOS 7 and belongs to the UIKit

Common iOS time methods // Date before the current day NSDate * today = [NSDate date];   // Time Zone NSTimeZone * zone = [NSTimeZone systemTimeZone];   // Set the interval _ Interval = [zone secondsFromGMTForDate: today];   // Today + 8 hours

Imitating the application source code of Renren client, Renren source code Imitating the app source code of Renren client, this iPhone (ios) Renren client source code is based on Renren open platform. There are many implementations, including

IOS development-Email sendingDuring Web development, email registration and logon are essential, and mobile phone numbers can be changed. However, email addresses are used only when they are important, such as the required email address when looking

Ios application multi-language free switch implementation The first time you enter the application to obtain the local language. 1. if the local language is in the software implementation language list. the local language is selected by default, but

One of IOS design patterns (MVC and Singleton)IOS design patterns-you may have heard of this term, but do you really understand what it means? Although most developers may think that design patterns are very important, there are not many articles on

Determines whether textField is empty and textField is empty.   :   Code: -(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. // TextField UITextField * textField = [[UITextField

Your MacBook is out of date overnight On April 9, March 10, Apple held a press conference. In addition to the much-watched Apple Watch, Apple also brought the latest Mac new product, the brand new MacBook 12 of 12 inch. The thinner body, Retina

Swift Optional (Optional) Type basis, swiftoptional Can be empty type, it is certainly not unfamiliar to those who are familiar with C. In C #, the nominal value type cannot be blank. For example, the int type defaults to 0, and the bool type

IOS Performance Tuning series: use Zombies to dynamically analyze zombie objects in the memory and optimize zombies Hardware wide: The fourth article in the IOS Performance Tuning series, which is expected to be updated continuously over 20 articles.

Xmpp sort notes: Send image information and sound information, xmpp Image Information The basic idea of sending images and audio files is: First, convert the image into a binary file, and then encode the binary file with base64 encoding, and then

Common structures in IOS-Foundation: ios-foundation structure Many common struct types are defined in Foundation to simplify our daily development. Nsange (location length) is used to indicate the range. NSPoint \ CGPoint (the latter is often used

Analyze the call sequence and call sequence of all methods when the application starts. The Startup Process of an application should include the creation of a proxy, the loading of the controller, and the loading of the controller view. There are

Swift, OC, C ++ hybrid programming, swiftoc OC calls C ++: 1. Create an oc project: 　　 2. Main steps: Change the suffix of A. m file to. mm, 3. Create a c ++ File  # Ifndef _ Test _ CPPHello __# define _ Test _ CPPHello __# include class CPPHello

IOS programming-Network Monitoring   In network applications, You need to monitor the network status of your devices in real time for two purposes: (1) let users know their network status and prevent misunderstandings (for example, the application