IOS

Difference between initialize, init, and load methods and when to call initializeinit Initialize is not init When initialize is called for the first time, for example, [[class alloc] init] will call the initialize method once. No matter how many

The solution that UIMenuController cannot be displayed inside the Cell ., Solution for internal version 7601 Xcode7.2, in iOS9.2 Environment Try to add the LongPress gesture inside CollectionViewCell to display UIMenuController. @ Implementation

[Code Note] string and note string I. Code. -(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view. self. title = @ "string segmentation"; // parse a general string NSString * string = @ "One, Two, Three, Four";

Solve cocoapods installation failure, prompt requires Ruby version> = 2.2.2, cocoapodsruby The procedure is as follows: rvm install ruby-2.2 However, an error was reported. I forgot the details, but it was a problem with permissions and brew. Then I

Set the navigation bar topic in IOS development and the navigation bar topic in ios development /*** The system calls this class for the first time (only one class is called once) */+ (void) initialize {// set the navigation bar topic

WebViewJavascriptBridge source code exploration-view the interaction process between OC and JS and between wkwebviewjs oc Today, I checked the source code of the third-party library WebViewJavascriptBridge that implements interaction between OC code

Use drawRect to implement a ruler. The drawRect method is used to implement a ruler selector. The demo is here: https://github.com/phelthas/lxmrulervieweffect. If the reuse problem is not considered, I feel that the simplest implementation method

[Code Note] Loading, code note I ,. Ii. Code. -(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view. [self showFooter: YES];}-(void) showFooter :( BOOL) showFooter {NSLog (@ "pull up Refresh: load more views");

[Code notes] the user can save the crash and code notes after publishing. 1. Engineering Drawing. Ii. Code. AppDelegate. m # Import "AppDelegate. h "# import" RootViewController. h "# import" NdUncaughtExceptionHandler. h "@ implementation

Sorting of objects in the array (sort) and sorting of array objects (sort) 1. There are many methods for sorting arrays, such as for and while loop to perform Bubble sorting or multiple sorting methods such as quick view and sorting. Here I want to

IOS BUG: Unbalanced cballs to begin/end appearance transitions for ., unbalanced   The following error is reported when the custom TabBarController pushes a lower-level Controller: Unbalanced callto begin/end appearance transitions for . Some

WebView adaptive height document. body attribute, webview highly adaptive Some time ago, I encountered the webView highly adaptive problem. The original method was invalid. I found some information and recorded it. 1. If the webpage contains This

[IOS] simulates the YFSplashScreen and iosyfsplashscreen dynamic startup pages of the new hot drawer list. For IOS, you 'd better set the default system startup page. Otherwise, the black screen will pop up when you enter the application. Is the

IOS learning notes-File Operations (NSFileManager) and iosnsfilemanager IOS sandbox mechanism. Applications can only access files in their app directories. Unlike android, iOS does not have an SD card and cannot directly access images, videos, and

NSTimer timer summary, nstimer timer Summary I. Initialization Methods: There are five initialization methods: + (NSTimer *) timerWithTimeInterval :( NSTimeInterval) ti invocation :( NSInvocation *) invocation repeats :( BOOL) yesOrNo; Usage: -(Void)

Differences between OC and Swift 3 (Condition Statement): ocswift Condition Statement 11. switch structure in swift Difference 1: The switch condition in oc can only be an integer. The switch condition in swift can be set to almost any data

NSAttributedString (Rich Text) and nsattributedstring for iOS Learning NSAttributedString is a string with attributes. It can easily show different fonts, font sizes, and font sizes in a string, you can also format paragraphs. Generally, you can

[IOS] imitates the YFMetroListBox and vblistbox indexes of the windowsphone List Index Control. Do you think that the index on the Right of UITableView is difficult to use? I always think that the List Index in WindowsPhone is very useful. Therefore,

10 iOS users can laugh at the features of Android The battle between Android and iOS devices never stops. After all, the concepts and actual expressions of all high-tech products are different. Taking Android as an example, many features make users

Optimization of iOS-UITableView (original by hand) and iosuitableviewTableView optimization 1: What is TableView optimization and why? 1) CPU (central processor) and GPU (graphics processor) CPUs are mainly engaged in logical computing. GPU is