IOS

IOS UITextField limits the number of input words, iosuitextfield The text box on iOS sometimes requires a limit on the number of words, such as the mobile phone number. The UITextField proxy simply writes a judgment. When the number of words

IOS client Coding project record (4), ios client coding project 1: Open Xcode and crash. An exception occurs when loading a database. For example,/Applications/Xcode. app/Contents/Developer/Toolchains/XcodeDefault. xctoolchain/usr/lib/libclang.

MVC design mode for iOS MVC is a standard that all object-oriented programming languages should comply with. The MVC idea is to divide an application into three basic parts: Model and View) and Controller. They work collaboratively with minimal

Common Methods of NSNumber, NSArray, and NSString in OC, nsnumbernsarrayUnlike C, Objective-C has a separate string class NSString. In C language, string is composed of char (ASCLL code) characters in OC, and the string is composed of unichar

IosGCD thread-safe Resource Sharing The magic way is to lock. Let you get through one by one. Don't worry, wait in the queue and buy steamed bread. Alas, who told you not to worry? Look at you.   // // ViewController. m // Thread security // //

Using semi-transparent fuzzy effects in iOS development In iOS development, we have a lot of options for translucent blur effects. Below are some common methods or tools. 0. Core Image As a leader in design and experience, apple must have excellent

IOS images are stored in sandbox -(Void) viewDidLoad { [Super viewDidLoad]; // Initiate an attempt to attach an image Imageview = [[UIImageView alloc] initWithFrame: CGRectMake (0, 50, self. view. frame. size. width, self. view. frame. size. height-1

(Conversion) Use of UIColor, use of uicolor OS development-Use of UIColor. During ios development, operations related to UIColor are often encountered. For example, self. backgroundColor = [UIColorredColor]; The redColor here is the color defined by

Use of WebView for iOS Learning 1. initialize WebView -(Void) viewDidLoad{[Super viewDidLoad];WebView = [[UIWebView alloc] initWithFrame: CGRectMake (0, 0,320,480)];NSURLRequest * request = [NSURLRequest requestWithURL: [NSURL URLWithString: @ http:/

IOS network development NSURLSession (4) UploadTask (upload data + image) Original blog, reprinted, please indicate the sourceBlog.csdn.net/hello_hwc Preface:UploadTask is inherited from DataTask. It is not hard to understand, because UploadTask

How to hide UITabBar under iOS6 and iOS7 If you don't stick to it, you won't make progress! These two days are compatible with iOS6, and the original region does not respond to the Click Event After UITabBar is hidden. This will happen if you don't

Ios string judgment 1. scope: [plain] view plaincopy typedef struct _ nsange {unsigned int location; unsigned int length;} nsange; // location indicates the starting position where the field stores the range, and length indicates the number of

IOS UIButton attribute settings// Set the Custom button// UIButton * button1 = [UIButton buttonWithType: UIButtonTypeCustom];// Set a button for rounded cornerUIButton * button1 = [UIButton buttonWithType: UIButtonTypeRoundedRect];Button1.frame =

IOS message mechanism1. Local push IOS push notifications can be divided into local push and remote push notifications. Remote push notifications are similar to messages sent to us by friends even when we lock the screen, then an alertview is

Dynamically set the Cell height for ios -(UITableViewCell *) tableView :( UITableView *) tableView cellForRowAtIndexPath :( NSIndexPath *) indexPath { Self. mainTitle = [[UILabel alloc] init];Self. mainTitle. numberOfLines = 0;Self. mainTitle. font =

Encapsulation of iOS-binary Protocol   Encapsulation of iOS-binary Protocol     For SDK socket communication, there will be a binary communication mode. Based on the previous work content, we will summarize: First, we can use the string and binary

Methods for obtaining the paths of documents, tmp, app, and Library, tmpapp The phone Sandbox Model contains four folders: documents, tmp, app, and Library.1, DocumentsYou should write all application data files to this directory. This directory is

Difference between dequeueReusableCellWithIdentifier and dequeueReusableCellWithIdentifier: forIndexPath, -(Id) dequeueReusableCellWithIdentifier :( NSString *) identifier; // Used by the delegate to acquire an already allocated cell, in lieu of

IOS development-Stage 3-Weibo (5) (Program 2) and ios Stage 3   Design Concept: Design Code according to MVC New ZYLoginWebView inherits from UIView Add the webView attribute in ZYLoginWebView. h. Create the webView Initialization Method in

IOS: converts a json string to a dictionary and a json string to a dictionary. /*! * @ Brief converts formatted strings in JSON format to dictionaries. * @ Param jsonString string in JSON format * @ Return returns the dictionary. */ + (NSDictionary *