IOS

IOS Data Storage Methods IOS data storage is an important knowledge point for iOS application development: There are many introductions on this aspect, but there is no comprehensive introduction to the usage of code layers. This article focuses on

IOS-Archiver file archiving (2) Archiver is a method of persistent data. The difference between Archiver and Plist is that it can persist custom objects. But it is not as convenient as Plist. By default, data that can be persisted by Archiver

IOS custom UITableView According to different needs, you need to use the tableview structure, but each cell in it requires its own style, so I learned how to add the cell defined by myself to tableview. First, you must create a class, inherit

IOS Singleton mode dispatch_once IOS Singleton mode dispatch_once 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

Common encryption algorithms for iOS In iOS development, content is often encrypted for data security. Here we summarize common encryption algorithms: 1. MD5 + (NSString *)md5Hash:(NSString *)str { const char *cStr = [str UTF8String];

[IOS] sliding switching through UIScrollView and UIPageControl UIPageControl is a built-in control. You can view official documents and download official examples. If you are not familiar with the Xcode documentation, refer to: Apple Xcode help

Usage of nsuserults ults in ios Usage of nsuserults ults in ios     The NSUserDefaults class provides a programming interface for interacting with the default system. The NSUserDefaults object is used to save and restore preference settings and

A multi-choice control with animation in IOS (2) Then let's write: TypeSelectView This is relatively simple. We only need to position each TypeView and use it as our subview. @interface TypeSelectView : UIView@property(nonatomic) BOOL

IOS modifies the font and size of the text in the toolbar. Use NSDictionaty to set text attributes: NSDictionary * attributes = @{NSFontAttributeName: [UIFont fontWithName:@"Heiti SC" size:20]}; [confirmBarButton

How to solve the problem of invalid UIView effect in iOS7 Recently I want to make a running horse lamp effect, so I wrote the following code for the running horse lamp effect... However, debugging found that the animation in iOS6 can be executed,

IOS Development Series-construction type of C LanguageSummary in Section 1, we mentioned the construction type of C language, which can be divided into: array, struct, enumeration, and shared body. Of course, the content of the preceding array has

IOS-network requests Network requests include GET. POST. The steps are as follows: 1> get url. 2> GET request. 3> create a link. 4> return data (proxy ). 1> get the URL. NSString * urlStr = @ "http://api.zbw.vc/api/vip/GetPhonePadTagMsg"; // when

[Ios] ios delayed execution method and ios delayed execution Method1. the most direct method is javasmselector: withObject: afterDelay: the disadvantage of this method: Write a method for the delay each time. use class and use BOLCK to execute [Code]

IOS Development Series-pointer to c language, ios development-c pointerOverview Pointers are the essence of C language, but many beginners often do not have a profound understanding of pointers. As a result, after learning them, they become

How to ensure that the input box is not overwritten when the keyboard appears on iOS? When you request to display the keyboard on iOS5, the system slides the keyboard from the bottom of the screen, located above the content of the application. (Wall:

Ios development from scratch (19): Application Settings and User ults (on), iosdefaults In iphone and ipad, you must be familiar with one thing: Settings. To put it bluntly, I learned how to set certain attributes of an app in Settings. In turn,

InitWithNibName method, initwithnibname   In iOS, when an object is init, The init method of the object is called. When the init method is entered, the initWithNibName method is called for debugging and verification. 1 // This method is

Li dongqiang-write view with code and view with Li dongqiang code Main Code // // ViewController. m // Create view-709 // // Created by apple on 14-7-9. // Copyright (c) 2014 Camp David education. All rights reserved. //   # Import "ViewController.

About delegate in IOS, iosdelegate Soon after you start writing iOS programs, you should start to face a lot of delegate,Whether using others' libraries or writing their own libraries, you may not be able to escape the delegate.For fear that some

Note about NSUserDefault in version update: nsuserdefaultNotes about NSUserDefault in version updateWhen updating the version, you need to prevent this situation, that is, whether the key you set in NSUserDefault has the corresponding value, and