Objective, objectivec

Objective, objectivec   Objective-c Chapter 1 Hello world 1.1 1.2.On the Welcome screen, click "Create a new Xcode project" (see Figure 2-1), or just chooseFile-> New Project.   1. 3. Write the following code in main   #import int main(int argc,

Object, objectid

Object, objectid Object-c OOP, source code organization, Foundation framework details 1 1.1 So what is OOP? OOP is a way of constructing software composed of objects. Objects are like little machines living inside your computer and talking to each

UIView-layer method, uiview-Layer

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

Objective, objectivec

Objective, objectivec Objective-c Foundation framework details 2   Collection Agency Cocoa provides a number of collection classes such as NSArray and NSDictionary whose instances exist just to hold onto other objects. Cocoa provides a series of

The IOS viewDidLoad method is executed twice (detailed description of the viewDidLoad and loadView methods)

The IOS viewDidLoad method is executed twice (detailed description of the viewDidLoad and loadView methods) To understand the usage and call sequence of methods such as viewDidLoad and loadView, a small demo is written. unexpectedly, the viewDidLoad

Data sharing between apps and Extensions

Data sharing between apps and Extensions Recently, I have been playing Watch development. Currently, Watch's main logic processing is in WatchKit Extension. The real Host App, that is, the WatchKit App, is only used to display data on the interface.

IOS --- NSFetchResultsController

IOS --- NSFetchResultsController NSFetchedResultsController and UITableView are integrated to process data with great flexibility. The first advantage is that data records do not need to be paged. Otherwise, according to the traditional practice,

Detailed expression for iOS development

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

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

Introduction to Block in iOS (1) Basics and introduction to iosblock

Introduction to Block in iOS (1) Basics and introduction to iosblockIntroduction to Block in iOS (I) Basics I. Overview Block is a C-level syntax and runtime feature. Block is similar to a C function, but the flexibility of Block is reflected in the

Value passing in the basic iOS control UINavigationController and iosui Control

Value passing in the basic iOS control UINavigationController and iosui Control In the Basic iOS control UINavigationController, the value is transmitted by proxy, forward, and reverse.   # Import // declare a protocol @ protocol SendValue //

Several value passing methods (attribute, proxy, block, Singleton, notification) and iosblock between iOS pages

Several value passing methods (attribute, proxy, block, Singleton, notification) and iosblock between iOS pagesHow does the second view controller obtain partial information of the first View Controller? For example, lable In the second interface

) UIColor, CGColor, CIColor, and uicolorcgcolor

UIColor, CGColor, and CIColor Recently I looked at CoreGraphics and saw CGColor. So I thought about taking a look at UIColor and CIColor to find out the differences and relationships between them. Next, let's take a look at these three concepts: 1.

Research on the drawer effect of several github third-party libraries, drawer github

Research on the drawer effect of several github third-party libraries, drawer github In the selection of the new version of the company's project, the drawer effects to be used in the leading flight were investigated. The main reason is that the ECS

FMDB and iosfmdb

FMDB and iosfmdb I. What is FMDB? Most of the SQLite APIs originally generated in OS are in C language code, which is inconvenient to use. Therefore, many third-party frameworks for SQLite encapsulation have emerged, FMDB is one of

UIActivityIndicatorView indicator provided by ios

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

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 obtains the attribute list of a class.

IOS obtains the attribute list of a class. Instance description:   @interface DemoObject : NSObject@property (strong, nonatomic,readonly) NSString *name;@property (strong, nonatomic) NSMutableArray *dataSource;@property (copy, nonatomic)

IOS development reflection and dynamic call Summary

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 =

Two ways for iOS to load dynamic graphs

Two ways for iOS to load dynamic graphs I   View = [[UIView alloc] initWithFrame: CGRectMake (0, 0,100,100)]; NSString * imagePath = [[NSBundle mainBundle] pathForResource: @ "csjg" ofType: @ "gif"]; CGImageSourceRef cImageSource =

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