IOS

Objective, objectivec Objective-C Memory Management Part 1 Memory management is part of a more general problem in programming called resource management. Memory Management is part of resource management. Every computer system has finite resources

Singleton, Singleton Mode # Import @ interface Student: NSObject @ property (retain, nonatomic) NSString * name; @ property (assign, nonatomic) int age; // design the standalone mode // + (class name *) shareXXX // defaultXXX // xxx + (Student *)

Color gradient for ios 2D plottingColor gradient for ios 2D plottingColor Space cmyk Printing Industry RGB gradient color: linear gradient, ring gradient linear gradient: the gradient area is the current context, perpendicular to startPoint

Add a shortcut menu gesture and view gesture to the view. After iOS7, the shortcut menu will be slide from the bottom of the screen. I feel that this effect is good and I want to make a similar effect. This item is not highly technical, writing

UIView-layer method, uiview-Layer //// ViewController. m // UIView-layer concept /// Created by wangtouwang on 15/5/5. // Copyright (c) 2015 wangtouwang. all rights reserved. // # import "ViewController. h "@ interface ViewController () @ property

Detailed expression for iOS development A regular expression (the widely known "regex") is a string or a character sequence. It is very powerful as a search string! In a text editor or text processor, regular old-style searches only allow simple

Methods triggered during view loading (loadView/viewDidLoad/didReceiveMemoryWarning) and loadviewviewdidload 1. loadView This is how the View Controller loads the Root View; If you need to use a custom view as the root view, you do not need to call

UIActivityIndicatorView indicator provided by ios   // // RootViewController. m // UIActivityIndicatorViewDemo // // Created by Dubai on 15/4/28. // Copyright (c) 2015 Dubai. All rights reserved. //   # Import "RootViewController. h"   @ Interface

Ios notes-NSSet //// Main. m // NSSet /// Created by Passer-by on 15-3-23. // Copyright (c) 2015 MAC. all rights reserved. // # import Int main (int argc, const char * argv []) {@ autoreleasepool {/* comparison between NSSet and NSArray 1>

IOS development reflection and dynamic call SummaryLike java, Object-C also provides a reflection mechanism. Each Class has a Class. There are three methods to obtain the Class.   // Insert code here... // obtain class Class class clazz =

KVC/KVO, kvckvo 1 // KVC (Key Value Coding) 2 // assign values to attributes of an object, 3 Student * stu = [[Student alloc] init]; 4 [stu setValue: @ "xiaowang" forKey: @ "name"]; 5 NSLog (@ "% @", stu. name); 6 7 8 // KVO (Key Value Observer) 9 /

Hide the status bar for iOS It is not easy to operate the status bar on the top after iOS. The procedure is as follows: First, add the View controller-based status bar appearance item to the info. plist file, 1. If the View controller-based status

The prompt box for iOS users to allow permission positioning is displayed. For applications that require access to the user's location, a prompt box Indicating that "xx" is allowed to access your location or always access location when you use

Is the era of cross-platform development coming ?, Development age approachingSource: Wang Wei (@ onevcat) Welcome to share the original article with bole headlines This article focuses on the recent cross-platform development of mobile development,

React Native Communication Mechanism details, reactnative Source: Bang blog (@ bang) Welcome to share Original Articles with bole headlines React Native is the just-open-source framework of facebook. It can be used to develop Native apps directly

Jsonj parses network data and jsonj parses the network // Load network data locally NSString * strUrl = @ "http: // 10.0.8.8/sns/my/user_list.php? Page = 1 & number = 5 "; NSURL * url = [NSURL URLWithString: strUrl]; NSData * data = [[NSData

Custom Singleton for iOS development: custom for iOS development Custom Singleton for iOS development Here I use macros: //. H# Define single_interface (class) + (class *) shared # class;//. M// \ Indicates that the next row also belongs to a macro./

For iOS, MMDrawerController and mmdrawercontroller are developed to solve the gesture conflict between the left and right drawer open gesture and the center view sub-View Controller. MMDrawerController is a very useful third-party class to implement

Common Xcode shortcuts and xcode shortcuts New Shift + cmd + n create a project Cmd + n create a file   View Option + cmd + press enter to open the assistant editor Cmd + press enter to display the Main Window Cmd + 0 navigation window Option + cmd +

Gesture details in IOS1. Click UITapGestureRecognizer * tap = [[delealloc] initWithTarget: self action: @ selector (click)]; // set the number of times to be clicked [tap setNumberOfTapsRequired: 1]; // set the number of fingers for the current