IOS

Ios screen, Status Bar (statusbar), program window size acquisition and screen rotation size changesApp size, remove the status bar CGRect r = [UIScreen mainScreen]. applicationFrame; this size will not change the width and height as the screen

Objective-C (iOS) is strictly implemented in the singleton mode. objective-cios Note: the ownership of this article is owned by the author. For more information, see the source. If you want to have only one class object in an application, you can

Three steps of the Quatre 2D drawing function (context, drawing, rendering), quatre2d 1. How does qurza2d draw drawing information and drawing attributes to the drawing context? Note:Create a new project, customize a view class and storyboard

PopViewControllerAnimated, refresh the data in the UITableView on the page, poptoviewcontroller After popViewControllerAnimated,In this case, it does not execute viewDidLoad,Therefore, viewControler cannot be refreshed in time. You can call this

NSFileManager and NSFileHandle of IOS, nsfilehandle The number of temporary cache files for mobile apps in the current stage is gradually increasing. In app development, there are more and more operations on mobile device files. In IOS, file

Differences between NSString and SwiftString and nsstringstring Now there are more and more Swift projects, and you may often see str as NSString or str as String switching between the two, because some operations are more convenient with the OC

Xcode7, disappear pin menu (Editor-> pin), xcode7editor- If you have used autolayout, you should be familiar with pin. With this option, you can set the margins around the control: Top Space, Leading Space, Trailing Space, and Bottom Space. In the

IOS image browser controls zoom in and out, UIScrollViewThe image browser uses UIScrollView to set n ScollView UIScrollView attributes in a large ScollView. contentSize and contentoffset indicate the interactive offset of UIScrollView. The first

UITableView for iOS UITableViewDelegate protocol Method   Returns the height of each row of cells. -(CGFloat) tableView :( UITableView *) tableView heightForRowAtIndexPath :( NSIndexPath *) indexPath   Returns the height of the partition

How to Implement iOS library Animation: Part 1 (Part 2) Link to the original article: How to Create an iOS Book Open Animation: Part 1 Author: Vincent Ngo translated from: Development Technology frontline www.devtf.cn Translator: kmyhy Page flip

The use of BLOCK in iOS _ using block to implement chain Programming  I. Scenario We have an object. He has two methods: Learning study and running,This person has a quirk and must learn it after running the step. In order to realize this method and

IOS --- common block usage The block in Objective-C has multiple definitions and usage methods.As property @property (nonatomic, copy) int (^myBlock)(int a, int b); Block Code body: _myBlock = ^int (int a, int b) { return a + b;}; Usage: sum =

How to Implement iOS library Animation: Part 1 (Part 1)How to Implement iOS library Animation: Part 1 Link to the original article: How to Create an iOS Book Open Animation: Part 1 Author: Vincent Ngo translated from: Development Technology

Weekly essays-15.9.21 and essay-15.9.21New knowledge point record (15.9.21) 1.WriteToFile:Atomically: -(BOOL) writeToFile :( NSString *) path atomically :( BOOL) useAuxiliaryFile; The second parameter indicates: If YES, the file write Atomicity is

Build an IOS development environment in Windows (1) and build an ios Original article: http://blog.csdn.net/shangyuan21/article/details/18153605   We all know that Mac is required for developing mobile applications on ios platforms such as iPhone,

UITableView judge reloadData end (iOS) If you need to obtain the cell and height of tableview immediately after reloadDate, or you need to scroll tableview, executing code directly after reloadData may cause problems. ReloadDate does not return

IOS development diary 22-CocoaPods, ios22-cocoapods Today, the blogger has a CocoaPods demand and encountered some difficulties. I would like to share with you the hope that we can make common progress. CocoaPods is a management tool for a

Ios network Judgment MethodI have summarized several methods for judging the network connection mode of ios: 1. Reachability. Reachability is a third-party library recommended by Apple to determine the current network status. The primary functions

IOS-common skills, ios-skillsTip 1: When writing programs, we cannot write Fixed Screen width and height, for example, 320,480, because we need to adapt to different mobile phones. One common method is to set the width and height in the. pch file,

Miscellaneous --- irregular updates, miscellaneous --- irregular 1. data source is also a Special delegate. data source is responsible for transmitting data to views such as data, at, and count, while delegate is responsible for handling View did,