IOS

The protocol usage in Objective-C learning document is described in this article, mainly to understand and learn about the Protocol problems in Objective-C. For details, refer to the content of this article. I. Protocol definition

Lua scriptIt can be easily called by C/C ++ code, or the C/C ++ function can be called in turn, which makesLuaIt can be widely used in applications. Not just as extensionScriptCan also be used as a common configuration file, instead of XML, Ini and

IntroductionIn IOS applications, you often need to display the application update status in the program, either through the program itself or through service push, so how to apply the icon, UITabBar, and red circle numbers? The following is a brief

From. net C # porting to Cocoa Touch Objective C is not very smooth. The two platforms have a huge difference between the two languages. The porting work is almost a rewrite of the code, and the entire code volume is around more than 0.1 million, it

Want to write an array into the. plist file in one class, and then read the array from this. plist file in another class? Take the name, phoneNumber, and age fields as an example. I am an iphone, input data in the text box, get it, and load it into

UIKIT_EXTERN NSString * const UITextInputCurrentInputModeDidChangeNotification _ OSX_AVAILABLE_STARTING (_ MAC_NA ,__ IPHONE_4_2 );This notification is available. [[Nsicationcenter center defacenter center] addObserver: self selector: @ selector

During the development process, a large amount of data needs to be loaded. For example, the network may be frequently requested to display images. We cannot refresh the table view after loading all the images !!   How can this problem be solved? I

Almost all data in the settings of the iphone is stored in NSUserDefaults. Imagine four data storage methods commonly used by the iphone. NSUserDefaults is indeed an ideal method to save the settings file. Compared with other methods, it is easy to

In the development process, similar to the UI development methods of android and other platforms, you must use a mask graph to display some UI or Icon resources. The ios control comes with the alpha value, but this value is the transparent effect of

We are used to separating data from the interface during development. This method is better, but we only need to depend on a data structure in both the data and interface, this method is a good method for decoupling.However, some details may cause

1. MVC (Model-View-Controller). Cocoa Touch designers use the MVC pattern as the guiding principle and use it to split the logic method of GUI (graphical interface) application code.2. Moudle model: class for storing and processing application data (

I have previously written an article to show Badge on any UIView, but the IOS6 fails. It turns out that Apple has changed the Badge class name, so it is compatible here. The source code is as follows:[Plain]-(UIView *) showBadgeValue :( NSString *)

Yesterday, I found a mandatory scenario for the App. I tracked it and found the following statement: [Cpp][Self. mapView setRegion: [self. mapView regionThatFits: theRegion] animated: NO]; The crash information is:[Cpp]* ** Terminating app due to

Prerequisites: the mobile phone and computer are not connected or the Zune software on the computer is disabled (the image library cannot be accessed when connected to the Zune software). Version 7.1 You can use the PhotChooserTask method and XNA

Generally, the custom View code methods are as follows: Add sub-Views during initialization [Cpp] view plaincopy-(Id) initWithFrame :( CGRect) frame{Self = [super initWithFrame: frame];If (self ){// Add subviews}Return self;}You can also draw your

Some variables only need to be initialized once (for example, reading configuration parameters from the file, reading the device model, and so on). You can use dispatch_once for read optimization to ensure that only the API is called once, in the

1. In appDelegate, there are two ways to add a view to a window, [Cpp]Self. window. rootViewController = self. view;[Self. window addSubview: self. view. view]; Self. window. rootViewController = self. view;[Self. window addSubview: self. view. view]

The NSXMLParser of iOS SDK parses XML documents in the event-driven mode, that is, the XML Format documents are parsed In the SAX mode. When NSXMLParser encounters some elements (elements, attributes, CDATA blocks, comments, and so on) in the

On the ipad, how does one debug pages? In the past, when ios5 was used, you can use the developer tools in safari to open the console and view the log printing information of console. log for debugging. However, this item cannot be found after the

Affected Systems: Cisco IOS 12.4 Cisco IOS 12.3 Cisco IOS 12.2 Cisco IOS 12.1 Cisco IOS 12.0 Cisco IOS 11.3 Description: bugtraq id: 6443 Internet Operating System (IOS) is an Operating System used on a CISCO router. The use of forged VPN neighbor