ios development classes nyc

IOS development diary 53-ARC and memory management, ios diary 53-arc Today, the blogger has a requirement for memory management and has encountered some difficulties. I would like to share with you the hope to make common progress. Because the memory of mobile devices is limited, we need to strictly manage the memory to avoid wasting resources due to memory leaka

IOS Development notes series-basics 3 (polymorphism, dynamic type, and dynamic binding), ios Polymorphism Polymorphism: the same name and different classes Make the ability of different classes to share the same method name become polymorphism. It allows you to develop a gro

Simple underlying Basement for iOS-agile development and underlying basement for ios-IOS simple bottom layer My own Basement is simple and customizable at the underlying level. 1. Nothing: Network request data storage-ASI secondary development af mk has its own merits, so d

IOS development-OC language (2) design, ios-oc 1. Objective-C (OC) 2. Create a project in XCode 3. OC keywords and @ 4. OC variable naming 5. Basic OC Data Types 6. OC definition method 7. id type of OC 8. Differences between NSLog and printf 9. OC-defined string /*********** Object-oriented *********/ 1. object-oriented and process-oriented (for example, how to

IOS outline IOS consists of the operating system and application technology. Although it shares many technologies with Mac OS X, iOS is designed specifically for mobile devices. Of course, if you have used Mac OS X applications before, you will find many similarities, but many technologies can only be used in iOS, such

Regarding the design pattern this question, has also looked for some information on the net, below is my own summary, shares to everybodyIf you have just come into contact with design mode, we have good news to tell you! First, thanks to the way cocoa is built, you've used a lot of design patterns and encouraged best practices.First you have to figure out what the design pattern is, in the field of software design, the design pattern is a reusable solution to a common problem. Design patterns ar

Several Basic knowledge points about UIView and subview-IOS development (instance) and uiview-ios The environment is xcode4.3 First, you must understand several basic concepts. 1) Three structs: CGPoint, CGSize, and CGRect 1. CGPointC code /* Points .*/ Struct CGPoint { CGFloat x; CGFloat y; }; Typedef struct CGPoint; /* Points. */ struct CGPoint { CGFl

"iOS development". H,.m,.mm,.cpp and other differencesFile differences:. h: Header file. Header files contain declarations of classes, types, functions, and constants.. m: Source code files. This is a typical source code file extension that can contain objective-c and C code.. MM: Source code files. Source code files with this extension can contain C + + code in

Basic knowledge of IOS development-fragment 12, basic knowledge of ios-Fragment 1: Use Delegate . H # import 2: Implement UIButton display in different States [Btn setTitle: @ "more" forState: UIControlStateNormal]; [btn setTitle: @ "collapse" forState: UIControlStateSelected]; btn. titleLabel. font = [UIFont systemFontOfSize: 12]; [btn setTitleColor: [UIColor b

iOS Development Roadmap Brief February 16, 2015 10 reviews Article updated on 2015/3/9If you feel that this site is helpful to you, you can use the RSS or email to subscribe to this site, so you will be able to get the information on the site in the first time.The iOS system and iphone are all thanks to Steve Jobs, a perfectionist, from such an

25 Tips and Tricks for iOS app performance tuningThe advice I'm going to give is divided into three different levels: entry-level, intermediate, and progressive:Entry level (These are some of the suggestions you'll always use in your app development)1. Managing Memory with Arc2. Use Reuseidentifier in the right place3. Make the views as opaque as possible4. Avoid the huge xib5. Do not block the main thread6

Philosopherdelegate.h@protocol Philosopherdelegate Note that the obj.delegate = Self statement in the Viewdidload method specifies a reference relationship for the delegate object and the generic class.Although general-purpose classes (usually Uiviewcontroller and the like) are provided directly by Uikit, but in this case we have to implement our own generic class philosopher, I give the code, but really is not very important part.Philosopher.h#impor

C language learning in ios development-structure introduction and ios Language Learning In the development process, a group of different types of data is often needed, such as the student's personal information, which consists of the name, age, gender, and height, because the data is composed of different data types, i

]; unsigned int numofclasses; Class *classes = objc_copyclasslist (numOfClasses;); for (unsigned int ci = 0; CI monitors whether the iOS device has a proxy set, requires cfnetwork.frameworknsdictionary *proxysettings = (__bridge nsdictionary *) (C Fnetworkcopysystemproxysettings ()); NSARray *proxies = (__bridge Nsarray *) (Cfnetworkcopyproxiesforurl (__bridge cfurlref _nonnull) ([NSURLURLWithString:@

OverviewOnly one application can be active at any time in most mobile applications, and the notification mechanism can tell the user what is going on at this point if other applications are at the moment in which some users are interested. The notification mechanism in iOS is also called the message mechanism, which includes two classes: one is local notification, the other is push notification, also called

IOS development-Stage 3-Weibo (7) (Program 4) and ios Stage 3 Encapsulate the information displayed on the Cell into two model classes: The difference between the plus sign and the minus sign is very simple. In short, the difference is:The plus sign can directly call this method through the class name, while the

used as parameters of some methods in the framework; second, they can access local variables. Many classes in OC start with NS, which is the class library of the Foundation framework in the cocoa layer. 3 iOS development 3.1 Introduction to iOS OS the architecture of iOS is

default logical process of the operation. 2. Adaptation This is actually nothing to say, but I personally think that screen adaptation is not a problem. After all, there are several screen sizes for Android, and there are some models and hardware adaptation problems, It is a tragedy to run into a number of fake hosts that have never been cool. IOS screen image resource adaptation is much easier. Then, considering the compatibility of the SDK version

the file changes.Multi-person assistance, while modification leads to conflict, merging difficulties.Storyboard contains more pages and takes up too much memory, causing Xcode to stutter and crash.Error location difficult, error is not clear, novice difficult to locate the error. For example, accidentally deleted Iboutlet will be difficult to locate.Storyboard UI Development PracticesAccording to the business module divided into multiple storyboard,

Basic knowledge of IOS development-fragment 21, basic knowledge of ios-Fragment 1: [UIScreen mainScreen]. scale knowledge point When the screen is 640x940, [[UIScreen mainScreen] scale] = 2.0 when the screen is 320xlarge, [[UIScreen mainScreen] scale] = 1.0 2: How to correctly draw a line of 1 pixel # Define SINGLE_LINE_WIDTH (1/[UIScreen mainScreen]. scale) #