IOS

During project development, a big map can be dragged by pressing and sliding with one finger. The two fingers can be opened or closed to zoom in and out the map. To achieve this function, you need to use the cocos2d-x multi-touch function. The multi-

At the apple Developer Conference WWDC 2014, Apple announced the brand new iOS and OS X platform development language Swift, and released the official documentation. Nine days later, chinese fans have completed the translation of official Swift

1. Introduction 1>The whole application symbolizes that an application is a UIApplication object and uses the singleton design mode. 2>Access this singleton object through [UIApplication sharedApplication] 2. Common usage 1>Set the red number in the

Since the use of Objective C to develop Native iOS applications, many alternative iOS applications have been developed in other languages. For example, the following lists some of them: PhoneGap, developed using HTML/JS RubyMotion, using Ruby

 1. A new project is created in the prefix program. The following lines of code can be implemented in the master controller file to easily tile images in the view. Copy code 1 # import "YYViewController. h "2 3 @ interface YYViewController () 4 5 @

IOS is an operating system running on iPhone, iPod Touch, or iPad. It is called iPhone OS. iOS and Mac OS X share the same infrastructure and underlying technology. However, iOS is designed based on the characteristics of mobile devices, so it is

1. preface what is UDP protocol broadcast mechanism? For example, if a person in a group of people is looking for Michael Jacob, then you shout (broadcast) to the group: "Who is James?" If it is James, it will respond to you, and the same is true in

If you don't talk much about it, go directly to the Code: Header file: # Import @ Class NSString; @ interface NSData (Encryption)-(NSData *) AES256ParmEncryptWithKey :( NSString *) key; // Encryption-(NSData *) AES256ParmDecryptWithKey :(

    1. tuples Format variable or constant keyword tuples variable = (variable, variable ,...) Note: 1: The tuple variable is still a variable, but the expression is different from other variables.2: () The brackets can contain N

A few days ago, whimsy made a very watery application called "chinese 800" (800 sentences in spoken chinese). Now, it has been passed on by others (ongoing ). Today, I changed it to 800 oral English sentences. Advertisement bar added The ui is not

Source code of an iPad travel scenery display application and an iPad travel scenic area display application. The effect is dazzling. You can flip pages based on the effect of books on the left and right. Double-click the information of the Scenic

Note Inject unexecutable text into your code through annotations as your own notes or tips. Notes are ignored when the Swift compiler is running. Swift comments are very similar to C. A single line comment starts with two backslashes: // This is

Function Swift uses the func keyword to declare a function. The function is called through the parameter list in the function name and parentheses. Use-> to distinguish between parameter names and return value types: 1 func greet(name: String, day:

A powerful iphone shopping application source code. This application source code is relatively complete and also supports credit card payment services and other functions, basically implementing our commonly used shopping application features, it

How long has swift been around? I saw a variety of screaming parties, translation parties, black apple parties, and video teaching parties spring up and burst out ...... I would like to say that people with a little development foundation can simply

1) apple Swift programming documentation-http://gashero.iteye.com/blog/2075324The introduction and simple use of Swift, written by a great god, describes the distinction between Swift and other languages and some new features and usage methods.2)

Each application has an nsicationicationcenter instance to facilitate communication between different objects. Any object can publish a notification (NSNotication) to the notification center to describe what it does. Other interested objects can

KVO usage Registration [object addObserver:observer forKeyPath:@"text" options:NSKeyValueObservingOptionNew context:nil];Implementation callback Method -(void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary

[UIDevice currentDevice].batteryMonitoringEnabled = YES;double deviceLevel = [UIDevice currentDevice].batteryLevel; To obtain the remaining power, we usually use the above method. This is also provided in Apple's official documentation. It returns

The C language is a static language, which works through function calls, so that we have determined how the program runs during compilation. Objective-C is a dynamic language. It does not call class methods to execute functions, but sends messages