ios programming for dummies

IOS Programming Camera 1, iosprogramming IOS Programming Camera 1 1 Displaying Images and UIImageView 1.1 put an instance of UIImageView on the screen. Then drag an instance of UIImageView onto the view and position it below the label. A UIImageView displays an image according to its contentMode property. UIImageView d

Network Programming for iOS development-2. Download The NSURLSessionDownloadTask file and nsurlsessiondatatask Content outline: 1. Review NSURLSessionTask 2. NSURLSessionDownloadTask large file block download 3. Download The NSURLSessionDownloadTask large file using a proxy method 4. The NSURLSessionDownloadTask large file proxy method for resumable download If the reader is reading or learning about the

SolutionIOS CodingProcessMemoryThe issue of allocation and release is described in this article.MemoryHow to allocate and release data. InIos ProgrammingMemory operations are not required. When I first came into contact with ios programming, the program crash is always caused by such memory problems. In fact, the release of memory in ios

Network Programming for iOS development-using NSURLConnection for large file downloads and iosnsurlconnectionMain Idea (implement multipart Writing of downloaded data into the cache) 1. Use NSURLConnectionDataDelegate and the proxy method.2. In the proxy method for successfully obtaining the response, obtain the full sandbox path and create an empty file and file handle under the path.3. In the proxy method

Multi-thread programming in Ios development-NSThread and iosnsthread The IOS program updates the UI view and responds to the screen touch event through the main thread during running. However, there will be some time-consuming work during view update, in this case, the system gets stuck. This is caused by the blockage of the main thread. This will make the user e

Recently in the jailbreak state of the iOS background monitoring software, the background daemon will get the data via TCP to send to the server, through the data learned that Iossocket programming recommended to use the public class library Asyncsocket, the use of such a library greatly facilitates the operation of the socket, Let's start with the introduction.1, Socket IntroductionA socket is an intermedi

IOS concurrent programming-eight locking methods and Comparison In iOS development, it is inevitable that you will encounter locking. Today we will compare various locking methods. Currently, I know the following locking methods:1. @ synchronized keyword locking2. NSLock object lock3. NSCondition4. NSConditionLock condition lock5. NSRecursiveLock recursive lock6.

IOS development: Eight attempts to bring you into lean Programming Opening Today, we will start with a small feature and implement it without thinking about it. Product Repository: Filtering Operation Code start There is a product library that we want to filter. The first requirement is not complex. Requirement 1: search for all products in red in the repository First Attempt: Hard Code We first implement i

NSURLConnection for iOS network development and programming Well-known third-party libraries at the iOS network layer, such as ASIHTTPRequest, AFNetworking, and MKNetworkKit. As the ASI is no longer updated, the landlord has basically followed the large army to use AF. AF uses the Cocoa-layer API-NSURLConnection. I used NSURLConnection in the past. I am not very

proxy methods * Set block Iv. Ease of use in file downloads and file uploads1> AFN * Not easy to listen to download progress and upload progress * Not easy to implement a breakpoint continuation * Generally only used to download a small file 2> ASI * Very easy to download and upload * Very easy to listen to download progress and upload progress * Very easy to implement the breakpoint continued to pass * Download or large or small files are OK

1, application in the Iphone6plus system iOS9.1 installation did not encounter problems, in Iphone4s system iOS 7 o'clock Bulid success But installation failure prompt there is an internal API errorProblem Reason: 1, product name is changed to ChineseHow to modify: Double-click the project name in the project navigation interface at a slower speed, and change the project name to an editable state.When you press ENTER, Xcode automatically pops out of t

IOS animation programming 1-affine transformation In essence, affine transformation is a matrix transformation that can be used for operations such as translation, scaling, and rotation. These operations can be encapsulated into animations. 1. Definition of apple's official documentation: CGAffineTransform CGAffineTransformMake ( CGFloat a, CGFloat b, CGFloat c, CGFloat d, CGFloat tx, CGFloat ty );Parame

untrusted certificates are allowed to pass validation, default to No BOOL Validatesdomainname; Verify host name, default is Yes ?重要: 2, "Afsslpinningmode" enumeration type has three values, respectively, is Afsslpinningmodenone, Afsslpinningmodepublickey, Afsslpinningmodecertificate. "Afsslpinningmodenone" means that Afsecuritypolicy does not do more rigorous validation, "as long as the system trusts the certificate" can be verified, however, It is affected by allowinval

First look at the four-tier architecture of the iOS system1. Core OS cores OS Layer2. Core Services Tier3. Media Layer4. Cocoa Touch LayerMedia layer is to support multimedia playbackiOS9 after the official recommended use of Avkit and avfoundtion framework to achieve video playback-(Ibaction) Click: (ID) sender{Creating a player ControllerAvplayerviewcontroller * PLAYERVC = [[Avplayerviewcontroller alloc] init];A range of features that need to be set

, it is necessary to install one.And suppose you want to send a blog so the main P-chart is also needed. Not necessary.: http://www.jb51.net/softs/176072.htmlPS: Baidu Software Center address: http://rj.baidu.com/index.htmlIn my opinion, the deployment of the development environment is complete only when your computer installs the necessary software. If you are a small white words do not let the old staff in the guidance you can not find the tools he wants to use and all kinds of dislike to you.

; [item release]; } return self;} Implement the required delegate methods so that Uitabbarcontroller can trigger these callback methods normally.Tabbarcontroller:didselectviewcontroller: is when the user selects a new tab, the Controller sends the message.-(void) Tabbarcontroller: (Uitabbarcontroller *) Tabbarcontroller Didselectviewcontroller: (Uiviewcontroller *) viewcontroller{ //snap SelectedIndex to determine the currently selected tab nsnumber *tabnumber = [NSNumber

This appendix describes some of the key advanced thread security frameworks for Mac OS X and iOS. The information in this appendix may be changed. Cocoa The guidelines for using multithreading on cocoa include the following: Immutable objects are generally thread-safe. Once you create them, you can transfer these objects securely between threads. On the other hand, mutable objects are usually not thread-safe. In order to use mutable objects in multi-t

Mainly to find work, get started quickly, heard the Peking University Jade Bird and so on training institutions Reply content:1, if there is no interest in the IT industry, what institutions are not. 2, if not work hard, they applying, only look at the programmer pay high, yearning for it, encountered difficulties on the retreat. 3, high school education, English, academic qualifications are flawed, but as long as there is interest and effort are not problems. Tell a story: A lad graduated from

Preface: The main content about Nsurlsession is coming to an end, here is to say file upload. About file upload of course to use Nsurlsessionuploadtask, here directly to explain the common will and agent nsurlsessiondatadelegate together to achieve file upload function. In addition, the following use of the file upload idea is and nsurlconnection in my previous essay "IOS Development Network programming-usi

, and then we'll choose yes here's what we're going to create.2.3. bridge FilesHere and Swift call OC different focus, need attentionThis is what Swift is actively using to invoke the OC language.Here we are OC invoke Swift language, so do not import the Swift file in this bridge file_____________for what ?because it was created, Xcode also created a hidden fileand this hidden file is the imperative for our OC to invoke Swift language.So what's his name?"Project Engineering name" + "-" + "Swift"