IOS

Take notes for the fourth day of IOS Learning (loop), and take notes for the fourth day of ios Learning IOS Learning (C Language) knowledge point sorting notes I. Branch Structure 1. The branch structure can be divided into two types: single branch:

IOS intermediate-multithreading and ios Multithreading GCD is a C-language framework. You do not need to manually manage the memory. It is a job-oriented, non-thread-oriented, and does not need to manage the life cycle GCD tasks of the

Some open-source libraries and third-party components used in the iOS project.Some iOS open-source libraries and third-party components used in the iOS Project I would like to share some of the iOS open-source libraries and third-party components

[Oc learning diary] kvc, kvo and notification, kvckvo KVC key-Value Pair Encoding Kvc key-Value Pair encoding means that no attribute is declared in the object (after all, few people will use kvc again using the dot method), and the member variable

UIButton and UILable of iOS Initialize the UIButton and UILable objects, set the click event listening button, and change the value of UILable to the current time;Run: The Code is as follows: //// ViewController. m // tableviewdemo04 /// Created by

[Study Notes] [C Language] sizeof, Study Notes sizeof 1. used to calculate the memory bytes occupied by a variable, a constant, or a data type. 2. sizeof has three forms 1> sizeof (variable \ constant) Sizeof (10); char c = 'a'; sizeof (c ); 2>

[Oc learning diary] proxy mode and oc diary proxy Mode What is the proxy mode? The proxy mode is also the delegate mode. The proxy mode, as its name implies, is a person asking another person to help him do something. Next we will use a purchase

Assign, copy, strong, weak, nonatomic understanding, assignnonatomic For example: NSString * houseOfMM = [[NSString alloc] initWithString: 'Mm's three-bedroom and two-bedroom ']; The above code executes the following two actions:1. Allocate a block

Ios dictionary-to-Model # Import @ Interface AppInfo: NSObject @ property (nonatomic, copy) NSString * name; @ property (nonatomic, copy) NSString * icon; // instancetype (instancetype) initWithDic :( NSDictionary *) dic; // The class method

NSUserDefaults, object archiving, nsuserdefaults Archiving NSUserDefaults @ Interface Person: NSObject @ Property (nonatomic, assign) NSInteger ID;@ Property (nonatomic, copy) NSString * name;@ End   // Save NSUserDefaults * user = [NSUserDefaults

New Features of iOS8 Xcode6 This year's apple press conference has ended, but it seems that people are not very interested in iPhone 6 and iPhone 6 plus, and they are very much looking forward to iWatch. This time, Apple released two types of cell

Added member variables for iOS classes RT // Add a member variable # import @ Interface NSObject (AddProperty) @ property (nonatomic, strong) NSString * stringProperty; @ property (nonatomic, assign) NSInteger integerProperty; @ end #

IOS --- sha1 Encryption   The sha1 encryption algorithm written in the OC language can be searched on the Internet at Will (as shown below), but I have to say that some people are not responsible and did not remind everyone to import necessary

NSOperation for iOS multi-thread programming There are two NSOperation methods: 1>. NSInvocationOperation: creates an operation and points it to the executed code segment with selecter. 2>. NSBlockOperation: Create an operation and place the

FMDB for IOS data storage, iosfmdb FMDB is a third-party framework for Data storage. Compared with SQLite and Core Data, FMDB has many advantages. FMDB Is Object-Oriented. It encapsulates the C language API of SQLite in OC mode, which is more

IOS stage learning 15th-day notes (NSDictionary and NSMutableDictionary dictionary), iosnsdictionary Knowledge points of IOS Learning (oc language) 1. OC dictionary1) dictionary: A container object. elements are stored in the form of key-value pairs.

IOS control UITextView achieves placeholder effect and solves UITableView keyboard occlusion At ordinary times, there are always multiple lines of text in development, and there must be a placeholder prompt. You can organize some code in the project

UIActionSheet dynamic Add button, uiactionsheet dynamic   Code: ViewController. h @interface ViewController : UIViewController@end   ViewController. m # Pragma-mark-functions // click any part to bring up UIActionSheet-(void) touchesBegan :( NSSet *)

Core Data for IOS Data storage, ioscore Core Date is a Data Persistence Solution Introduced after ios3.0. It is officially recommended by Apple and does not require third-party frameworks. Core Date is actually an encapsulation of SQLite and

IOS intermediate -- multithreading -- NSOperation, ios -- nsoperationThe NSOperation operation task encapsulates the code and the operation encapsulates the task. The purpose is to pause, resume, and cancel the task at any time; NSOperation