IOS

1. Configure Code Signing Identity in Build Settings in the PROJECT to select the profie of the corresponding application 2. Configure Code Signing Identity in Build Settings in TARGETS to select the profie of the corresponding application 3.

Recently, I encountered a problem when obtaining the Route IP address. On the iphone, we can see the gateway address from the settings, but the ios official does not provide an interface to obtain the gateway address. Finally, I made a demo myself,

-(Void) viewDidLoad {// create a sliding gesture UISwipeGestureRecognizer * recognizer; recognizer = [[delealloc] initWithTarget: selfaction: @ selector (handleSwipeFrom :)]; // you can specify the sliding direction, the following example applies to

IOS supports multiple levels of multi-threaded programming. The higher the level, the higher the abstraction level, and the more convenient it is to use. It is also Apple's most recommended method. The following lists the multi-threaded programming

There is a "Singleton mode" in the design mode. We often design a "Singleton class" (or a singleton class ). However, in practical applications, we often need to use "semi-singleton ". Next we will talk about Singleton and semi-Singleton, as well as

Server description # include // handle some error messages # include // standard input and output # include // Basic System Data Type # include // Internet address family defines the address family like sockaddr_in # include // socket # include

Bin Zi encountered a problem when he was just in touch with the IOS project today. During page skipping, he needed to pass parameters. I have found many ways to access the Internet, and I have not found any good methods in the book. All functions

# Include <>: Used to reference a system file. The compiler searches for the file in the system file directory. # Include "xx. h": Used to reference User-Defined files. The Compiler first searches in the user directory, then installs the directory,

1. Adapt to 4 inch screen adaptation. To adapt to the 4 inch screen, the system creates a default-568h@2x.png image and identifies whether the system supports the 4 inch screen based on the resource. As for other resources, xxx-568h.jpg is not

Reference content: warning C4996: 'strcpy': This function or variable may be unsafe. consider using strcpy_s instead. to disable deprecation, use_CRT_SECURE_NO_WARNINGS. see online help for details. remove the macro definition from IDE: menu:

Tile navigation mode is an important navigation mode. It is generally used for simple flat information browsing or tasks. Flat information refers to the non-subordinate hierarchical relationship between the information, such as flattening

Build settings with some parameters 1. installation Directory: When the Installation path static library is compiled, set "$ (BUILT_PRODUCTS_DIR)" in Installation Directory in Build Settings) "Skip Install is set to YESInstallation Directory. The

/** ** Determine whether the date is this week **/   -(BOOL) isCurrentWeek :( NSString *) dateStr { NSDateFormatter * dateFormatter = [[NSDateFormatteralloc] init]; [DateFormatter setDateFormat: @ "yyyy-MM-dd"]; NSDate * date = [dateFormatter

We run the program. If the network speed is slow, black screen will appear during the query until the request ends, so that the user experience is poor. Therefore, synchronous requests are generally used only in a child thread, rather than in the

1 PrefaceUITextField is used to accept text input by users. It is very common in development. Let's take a look at this control today. 2. code exampleZYViewController. h: [Plain]# Import  @ Interface ZYViewController: UIViewController @ Property

1 PrefaceIn each Section of UITableView, you can set the header and footer to meet your needs. You can set it by yourself. 2. code exampleZYViewHeaderFooterController. h:   [Plain]# Import  @ Interface ZYViewHeaderFooterController: UIViewController

You can use the subclass Button to customize your own button class. During subclass, You can reload the following methods, which return the CGRect structure and specify the boundary of each component of the button. Note: Do not call these methods

1 PrefaceIf we didn't have a Storyboard in our original project, don't worry. Today we will teach you how to add a Storyboard. 2. code example2.1 create a new Storyboard in the original project.   2.2 select a device type   2.3 set the Storyboard

If you want to execute methods in another class in one class, you can use notifications.1. Create a notification object: icationicationwithname: object: Or notifwitwithname: object: userInfo: NSNotification * notification = [NSNotification

After analyzing attributes such as nomantic, copy, and retain, in the new XCode version, we often see the following four attributes: _ unsafe_unretain, _ strong, _ weak, and _ autoreleasing. What are their functions? _ Unsafe_unretain, _ strong, _