IOS

IOS -- Singleton design mode in Swift developmentRecently, I have developed a small application and encountered some common Singleton modes in Objective-c, but there are some differences in swift, I tried to find out that I couldn't play the cards

IOS Development notes-singleton Mode I transferred from java to IOS and developed it. I learned some of the skills used in the project by myself in concert with the actual project. The APP is relatively small, and the knowledge involved is

Ios uses regular expressions to verify the mobile phone number of the password ID card In the project, we are verifying user input. The simplest method is to use regular expressions. the ios System also provides a convenient method, so that we can

IOS development-thread security for multi-thread DevelopmentA resource may be shared by multiple threads, that is, multiple threads may access the same resource, for example, multiple threads access the same object, the same variable, the same file,

[IOS Weibo project, [iOS blog ProjectGithub: https://github.com/hellovoidworld/HVWWeiboA. encapsulate network requests1. To avoid code redundancy and excessive coupling caused by multiple use of the AFN framework, You Need To encapsulate network

IOS development-multithreading NSOperation and NSOperationQueueNSThread can intuitively control thread objects, but it requires you to manage the thread lifecycle and thread synchronization by yourself, which is cumbersome to use and error-prone.

IOS plotting-simple triangle and ios plotting # Import @ Interface MyView: UIView @ End   # Import "MyView. h" @ Implementation MyView -(Instancetype) initWithFrame :( CGRect) frame { Self = [super initWithFrame: frame]; If (self ){ //

[IOS Weibo project, [iOS blog ProjectGithub: https://github.com/hellovoidworld/HVWWeibo. use Weibo API to send Weibo 1. demand learning send Weibo API send text Weibo send Weibo with pictures 2. follow the instructions in the Weibo API documentation

IOS App Launch Option, ioslaunch When the iOS program starts, it always calls application: didfinishlaunchingwitexceptions:. The second parameter launchOptions is an object of the NSDictionary type, which stores the reason for the program to start.  

IOS uses CGContextRef to dynamically draw a line chart -(Void) drawRect :( CGRect) rect {CGContextRef context = UIGraphicsGetCurrentContext (); CGContextClearRect (context, rect); CGContextSetLineWidth (context, _ lineWidth ); // set the paint brush

IOS custom scene switching animation ., Ios custom scenario Switching In IOS, we can use Storyborad And segue to implement our own scene switching animation, create a project, use the Single View Application template, and name it MyCustomSegue. Use

"OC" memory management, "oc 」I. Basic Principles(1) Why memory management. Because the memory of mobile devices is extremely limited, the memory occupied by each APP is also limited. When the app occupies a large amount of memory, the system will

How to disable the keyboard and UITextView UITextField can respond to the completion button on the keyboard to close the keyboard, while UITextView is different. Its return button or Done button performs the line feed function and cannot

"OC" inheritance, "oc 」I. Basic usage1. design two types of Bird and Dog 1 // Bird Declaration 2 @ interface Bird: NSObject 3 {4 @ public 5 int weight; 6} 7-(void) eat; 8 @ end 9 // definition of Bird 10 @ implementation Bird11-(void) eat {12 NSLog (

IOS development-common UITableView MethodsUITableView is often used to display data, similar to ListView in Android. Compared with ListView in Android, the implementation of UITableView is very simple. It inherits the UITableViewDataSource,

Objective-C basics 3: Memory Management continued, 1. In the previous article, we talked about the basis of Memory Management in OC. We will summarize the time to use memory management.1) when creating an object with new, alloc, or copy, you must

Common and public multiples /* It is difficult to describe James's problem. Now you need help. The problem is: two positive integers are given to obtain their maximum common approx. And the least common multiples. Enter an integer n (0 // maximum

Mutual jump between apps and mutual jump between apps The first time I wrote a blog, I believe many people have used umeng sdks or other third-party sharing tools to jump between different apps in iOS development. The principles are the same. The

App Store revenue distribution is extremely unbalanced, but independent developers still have the opportunity Recently, Marco Arment, a famous iOS developer, shared the sales of Overcast, with many statistics and charts. Overcast has been quite

IOS development-monitoring network changes Generally, you need to obtain the data update interface through the network on some APP interfaces. By setting up a network status listener, an application automatically refreshes page data after the