what ios iphone 5 have

What are the differences and connections between Nsnotification, delegate, and Kvo in iOS?delegate, notification, and KVO are similar in their function, so how do you choose these methods in real-world programming ?When developing iOS apps, we often encounter a common problem: how to communicate between controllers without being overly coupled. There are three mo

...... Alas, html5 is a good app, and games are not efficient. I don't know why you think that iOS and Android will have no chance after the rise of HTML5. I don't think this is a technical problem. On mobile devices, Native apps and Web apps are only technically different, and there is no difference in business models. Apps Are mainstream on touch screen smartphones. What if you write it in HTML

Here are a few websites to share with you about iOS resources, as well as the development of yourself and others and the team.iOS code sample Search, iOS effects sample, a lot of iOS development Demohttp://www.code4app.com/Apple develops Chinese website Cocoachina, the hottest iphone development Community http://www.c

Www.ithome.com: See what iOS and Android users are interested inMobile, has now become the mainstream computing platform, and in the entire "mobile battlefield", the platform of the most important protagonist of the battle is undoubtedly the two major iOS and Android systems. Android has won the crowd, thanks largely to their low cost of equipment and ease of acc

-use languagesActionScript is a simplified version of Java. I can't compare ActionScript with OC, but it is definitely easier to use than Java. Related comparison can see this: http://www.zhihu.com/question/19762068/answer/15544195 5. You can use ane To do what OC can do.The ANE plug-in technology used by air allows you to use OC to develop some local plug-ins and call it through APIS, so that you can do t

application.These three modes give controllers (or other objects) a way to communicate. The following describes how to use these patterns in iOS apps, as well as the need to be aware that they are used elsewhere, and that they do exist. Delegation When we first wrote iOS apps, we noticed the constant use of "delegate" and throughout the SDK. Delegation mode is not an

iOS app development: What is ARC?Blog Category: Phone/ios/objective-c/Swift What is arc?ARC is a new feature of iOS 5, called arc (Automatic Reference counting). Simply put, it is the code that automatically joins the

.======Memory allocations in iOS programs are divided into 5 regions Memory 5 region: Heap, stack, method area, global zone, constant area Stack: Do not need to manually manage memory, will automatically clean up the stack of memory Heap: Requires manual memory management Static zone: Also called Global zone In a computer, the

previous versions of IOS , a large number of gradients made it difficult to do so, but now the flattened navigation bar can easily be scaled up to twice times the size of the canvas used as the app's debut effect. Using the animation navigation bar and the page bar can easily scale out, occupy the entire screen, and then give way to the actual use of the application. What's more, it doesn't make you feel awkward or awkward, it's completely natural.Th

occur through your application when an alert-based interrupt occurs.What to do when your application enters the foregroundback to the foreground, your application has the opportunity to restart the task that stopped when it moved to the background. The steps that appear when you move to the foreground are shown in step 4-4 . the applicationWillEnterForeground: method should undo applicationDidEnterBackground: Any action done in your method , and the applicationDidBecomeActive: method sh

What are the advantages and disadvantages of iOS-Swift compared with Objective-C, Swift is a new development language released by Apple at the 2014 WWDC (Apple Developer Conference). It can run together with Objective-C on Mac OS and iOS platforms, it is used to build applications based on the Apple platform. It is an easy-to-learn and easy-to-use programming lan

1. OC Grammar Preliminary, you may learn the concept of object-oriented recently, and can roughly build a few self-righteous classes, but this is just the beginning, you know why object-oriented to have 3 major features, you know what design patterns they use?2. You may have learned the basics of nsstring, nsmutablestring strings, and you might spend a lot of time looking at those methods. The practicality of the method has never been considered. UI m

1. Product Design DrawingCan be designed with a 6 aspect ratio of 750*1134. These images are used to describe what the app looks like, which is a development reference for app developers.2. Product Cut ChartThe designer will cut the design into a diagram that can be used for development.Color valuesiOS color values take RGB color values such as a certain color value, given iOS development color value is R:1

[IOS development-18] What is the relationship between UIWindow and UIView? Isn't it important to upgrade UIWindow with xcode? Uiviewuiwindow (1) because the xcode version is different, the latest xcode does not provide blank documents that can be created at will in our old version (instead, it is purely a project with nothing to do with, yes, so we are built on a single MVC template. This example and all th

What does 1.iOS development need to learn?2. Development steps3. FrameworkTo make it easy for developers to develop powerful features, Apple offers a variety of frameworks[1] UIKit: Creating and managing the user interface for an application[2] Quartzcore: Provides animation effects and the ability to render through hardware[3] Coregraphics: C-based API for 2D rendering[4] Corelocation: Get location informa

written, the _selectedindex variable will be automatically generated, then assigned to his value, selectedindex we know, Are foreign values that are assigned to this attribute, such as Self.selectedindex = 5; Here's to say, Self.selectedindex is called the SelectedIndex set method, you call the set method, you want to assign a value, then you want to assign this value is 5; then you can not give the sy

) myinit{{//set TimerTimer = [Nstimer scheduledtimerwithtimeinterval:1Target:selfSelector: @selector (handletimer:)Userinfo:nilRepeats:yes];}Timer release: If the actual view in the declaration of initialization, the controller in the view before the release of the timer, otherwise due to the circular reference, and can not be released@implementation Bookreadcontroller-(void) dealloc{if (Landscape) {[Landscape->timer invalidate];}Saferelease (Landscape);[Super Dealloc];}@end4 release of the noti

narrative document is divided into: the development of descriptive narrative documents and published descriptive narrative documentsdeveloped descriptive Narrative file: Includes certificate and device information, can be targeted for multiple appspublished descriptive narrative document: includes a certificate that can only be used for an appthe distribution of certificates needs to be carried out in the keychain, p12 files everywhereapp Creation (itunes)1. Name of the application2. The applie

Under what conditions does ios develop with assign, copy, retain, strong, weak, and assignretain? 1. assign: Basic Types (simple type, atomic type): NSInteger, CGPoint, CGFloat, C data type (int, float, double, char, etc) Assign applies to basic data types such as int, float, and struct, and does not apply to reference types.Because the value type is put into the stack and follows the advanced post-

What is the difference between Retain and Copy in IOS? iosretaincopy 1. Readability: readonly and readwrite@ Property (readwrite,...) valueType value;This attribute is the default attribute of the variable. If you (readwrite and readonly are not used, your variable is the readwrite attribute), your variable will have a get method by adding the readwrite attribute, and set method.Property (readonly,...) valu