ios development tutorial swift

Li Hongqiang iOS Development Swift Chapter -06_ Process ControlI. Process Control in SwiftThe process structure supported by Swift is as follows:Loop structure: For, for-in, while, do-whileSelect structure: If, switchNote: These statements must be followed by curly braces {}, which are not required in the C languageDes

iOS Development Swift Chapter-(vi) Process ControlI. Process Control in SwiftThe process structure supported by Swift is as follows:Loop structure: For, for-in, while, do-whileSelect structure: If, switchNote : These statements must be followed by curly braces {}, which are not required in the C languagedescription : I

Li Hongqiang iOS Development Swift post -04_ operatorOne, operatorSome of the operators supported by 1.Swift have the followingAssignment operator: =Compound Assignment operators: + =,-=Arithmetic operators: + 、-、 *,/Remainder Operator:%Self-increment, decrement operator: + + 、--Comparison operators: = =,! =, >, Logica

Li Hongqiang iOS Development Swift article -09_ propertiesFirst, definition of ClassThe difference between swift and objective-c definition classesOBJECTIVE-C: typically requires 2 files, 1. h Declaration files and 1. m implementation filesSwift: only 1. Swift files required

iOS development language Swift Getting started serial-destruction processDestructors are called immediately before an instance of a class is freed. The destructor is labeled with the keyword Deinit, similar to the initialization function, which is marked with init. Destructors apply only to class types.　　Principle of the process of destructionSwift frees up resou

Li Hongqiang iOS Development Swift Chapter -08_ function (2)First, the function typeA function type is also a type of data that consists of a formal parameter type and a return value type, in the formreturn value type (List of parameter types)1 func sum (num1:int, num2:int), Int {2 return NUM1 + num23}The function type of the SUM function is (int, int), int1

iOS Development Swift Chapter-(vii) functionDefinition of a function(1) The definition format of the function1 func function name (formal parameter list)-- return value type {2 // function Body ... 3 4 }(2) format of formal parameter listFormal parameter name 1: Parameter type 1, parameter name 2: Parameter Type 2, ...(3) Example: Calculates the number of 2

iOS Development Swift Chapter-(ix) PropertiesFirst, definition of ClassThe difference between swift and objective-c definition classesOBJECTIVE-C: typically requires 2 files, 1. h Declaration files and 1. m implementation filesSwift: only 1. Swift files requiredDefinition fo

to create a new type, should you choose a value type or a reference type? When you use the Cocoa Framework, many NSObject of the APIs are subclasses, then you have to use reference types, that is class . In other cases, here are some guidance suggestions you can refer to:Cases where value types are used: ==when using an operator to compare instance data. When you want to copy an instance data separately. When working with data in a multithreaded environment. Use a referenc

. The specific code looks like this:　　Iv. control handling for interchangeable themesTheme and theme managers are finished, and then it's time to use them. When a theme is toggled, the control that needs to modify the property we need to process it to listen to the notification of the subject switch and modify the control's properties based on the notification content. In this section we will take Superviewcontroller as an example. First we will add the Superviewcontroller as the subject Switch

iOS Development Swift-(four) operatorOne, operatorSome of the operators supported by 1.Swift have the followingAssignment operator: =Compound Assignment operators: + =,-=Arithmetic operators: + 、-、 *,/Remainder Operator:%Self-increment, decrement operator: + + 、--Comparison operators: = =,! =, >, Logical operators:, |

iOS Development Swift Chapter-(ix) PropertiesFirst, definition of ClassThe difference between swift and objective-c definition classesOBJECTIVE-C: typically requires 2 files, 1. h Declaration files and 1. m implementation filesSwift: only 1. Swift files requiredDefinition fo

iOS Development Swift Chapter-(10) methodA simple explanationAs with other object-oriented languages, the methods in swift can be divided into 2 categories:(1) Example method (Instance Methods)In OC, the instance method starts with a minus sign (-)(2) Type method (Type Methods)In OC, the type method starts with a plus

"/>Book Description Amazing games for the IPhone, IPad, and IPod touch? With Apple ' s Swift programming language, it's never been easier. This updated cookbook provides detailed recipes for a managing wide range of common IOS game-development issues, ranging F Rom 2D and 3D math to SpriteKit and OpenGL to Performance-all revised for Swift.You get simple, d

Uitabbaritem in the development of a very common use it can be used to set the font color and picture settings, and so on, let's take a look at the iOS development of the Swift tab bar button Uitabbaritem style modification (icon text size, color, etc.) example, the details are as follows.Recommended dimensions and max

directly add to window is no use, you can set Inputaccessoryview = UIView () directly.6, afnetworking 3.0 output Log Let Networklogger = Afnetworkactivitylogger.sharedlogger () networklogger.startlogging () = Afnetworkactivityconsolelogger () = afhttprequestloggerlevel.afloggerleveldebug Networklogger.addlogger (console)7, Avcapturedevice.requestaccessformediatype authorization failure bomb uialertview need to put on the Dispatch_async (Di

a structure ' s stored properties does not have default values. struct-type member-by-construct method default exists Can be used directly regardless of whether the structure's properties have an initial value Updated to .. rather than for the .. half-closed Range Operator. Left closed right open interval representation, using: 1.. This writing method is easier to understand and use Added An example of extending

; Pagecontrol.currentpage=0Startbtn.settitle ("Immediate experience", ForState:UIControlState.Normal) startbtn.setbackgroundimage (UIImage (named:"Startbutton"), ForState:UIControlState.Normal) Startbtn.settitlecolor (Uicolor.whitecolor (), ForState:UIControlState.Norma L) Startbtn.addtarget (Self, Action:"Guideover", forControlEvents:UIControlEvents.TouchUpInside) Startbtn.hidden=truescrollview.bounces=falsescrollview.delegate=Self self.view.addSubview (scrollView) Self.view.addSubview (Pagecon

Int64 (Time * Double (nsec_per_sec)))4Dispatch_ After (delay, dispatch_get_main_queue ()) {5 println ("output after 2 seconds " )6 }Wrap it up.1 Import Foundation2 3Typealias Task = (cancel:bool) ()4 5Func Delay (Time:nstimeinterval, Task: ()), task? {6 7Func Dispatch_later (Block: ()()) {8 Dispatch_after (9 Dispatch_time (Ten Dispatch_time_now, OneInt64 (Time *Double (NSEC_PER_SEC))), A dispatch_get_main_queue (), - block) - } the -var closure:dispatch_block_t

; Homepagescrollview.addsubview (image2) Homepagescrollview.addsubview (image3) Homepagescrollview.Addsubview (image4) homepagescrollview.contentsize=cgsize (Width:image1.bounds.size.width, height:image1.bounds.si ZE.HEIGHT+IMAGE2.BOUNDS.SIZE.HEIGHT+IMAGE3.BOUNDS.SIZE.HEIGHT+IMAGE4.BOUNDS.SIZE.HEIGHT+500)// Note To add the height of all controls to ScrollView, you can also customize the length and width;} override func didreceivememorywarning () {Super.didreceivememor Ywarning ()//Dispose