NSTimer implements the clock callback method and nstimer callback

NSTimer implements the clock callback method and nstimer callback During the development process, it is found that there are many clock calls. Therefore, the clock is encapsulated in a simple and unified manner. The Code is as follows: 1.

IOS UITableView (multiple options)

IOS UITableView (multiple options) You often need to edit multiple-choice functions for some lists. UITableview provides the multiple-choice deletion function, which is easy to use. You do not need to store data or switch the selected status by

Magic RAC macro, magic RAC macro

Magic RAC macro, magic RAC macroFirst, let's talk about the macros that must be known in RAC. RAC (TARGET, [KEYPATH, [NIL_VALUE]) Usage: RAC (self. outputLabel, text) = self. inputTextField. rac_textSignal; RAC (self. outputLabel, text, @ "show me

[Reading Notes] iOS-Offline available Web applications, ios-offline

[Reading Notes] iOS-Offline available Web applications, ios-offline As we all know, web pages not only need to be accessed through the Internet to provide various forms of services, but also the various design elements of the web pages need to be

Ios Custom Animation effects, ios Custom Animation

Ios Custom Animation effects, ios Custom Animation During the development process, you may encounter various scenarios that need to wait until the loading is successful before the data can be displayed. The following is a Custom Animation loading

Ios custom message prompt box, ios custom message

Ios custom message prompt box, ios custom message Custom prompt box, automatically disappears 3 seconds later. Such as display effect. Code loading in the prompt box: -(Void) viewDidLoad {[super viewDidLoad]; // change the view background color to

Dynamically create Plist files and dynamically create plist files

Dynamically create Plist files and dynamically create plist filesIntroduction Property List, an attribute List file, which is used to store serialized objects. The property list file extension is. PlistTherefore, it is usually called a plist file.

PageController interface development tutorial in iOS programming development, iospagecontroller

PageController interface development tutorial in iOS programming development, iospagecontroller In iOS Programming Development, The pageController interface development tutorial is as follows: Project call sequence: 1. initialize the title

[Reading Notes] optimizes iOS Web applications and iosweb

[Reading Notes] optimizes iOS Web applications and iosweb I. code optimization: Code optimization is the first step of any optimization technology, because everything on the Web page is built on the code. Excellent code can save bandwidth, reduce

How to Use Runloop and iosrunloop in iOS development tutorials

How to Use Runloop and iosrunloop in iOS development tutorials In the iOS development process, the use of Runloop should not be underestimated. Although it is not very common, this part is also very important for iOS development, in addition, it is

Reflection -- & gt; parse JSON data, reflection -- parse json

Reflection --> parse JSON data, reflection -- parse json  Method 1 Persons. json File [ { "name": "Chris", "age": 18, "city": "Shanghai", "job": "iOS" }, { "name": "Ada", "age": 16, "city": "Beijing", "job": "student" }, { "name": "Rita", "age": 17,

Under what conditions does ios develop with assign, copy, retain, strong, weak, and assignretain?

Under what conditions does ios develop with assign, copy, retain, strong, weak, and assignretain? 1. assign: Basic Types (simple type, atomic type): NSInteger, CGPoint, CGFloat, C data type (int, float, double, char, etc) Assign applies to

Common iOS lock Methods

Common iOS lock Methods Lock usageThere are several methods in iOS to solve the problem of mutex synchronization when multiple threads access the same memory address: Method 1, @ synchronized (id anObject), (simplest method)The parameter object is

General Usage of AFNetworking and afnetworking

General Usage of AFNetworking and afnetworking AFNetworking is a powerful network library for iOS, macOS, watchOS, and tvOS. It is built on the base URL loading system, extends the powerful advanced network abstraction, and builds it into Cocoa. It

Objective-C Log Handling,

Objective-C Log Handling,NSLog method In order to print logs, we use the NSLog method in Objective-C programming language which we have used right from the Hello World example. Let us look at a simple code that wocould print the words "Hello World ":

Objective-C Protocols, objective-c

Objective-C Protocols, objective-c Objective-C allows you to define protocols, which declare the methods expected to be used for a particle situation. Protocols are implemented in the classes conforming to the protocol. A simple example wocould be a

[Reading Notes] memory management parameters in iOS-attributes, and ios-memory management

[Reading Notes] memory management parameters in iOS-attributes, and ios-memory management I. assign It indicates that the value is directly assigned during the setting, instead of copying or retaining it. 2. retain. The new value is retained

In the iOS navigation bar, how does one use UINavigationController and switch between pages,

In the iOS navigation bar, how does one use UINavigationController and switch between pages,Use of the navigation bar NavigationController manages the switch between the Bar at the top of the screen and different uiviewcontrollers. You can drag the

IOS Learning -- difference between @ class and # import,

IOS Learning -- difference between @ class and # import, During iOS development, we often see # import as the import package in some source code, but sometimes we also see @ class as the import package, so what are the differences between the two

[Reading Notes] iOS-Apple mobile device hardware, Reading Notes ios-apple

[Reading Notes] iOS-Apple mobile device hardware, Reading Notes ios-apple The key point in this book is: "hardware is not particularly important, and user experience is the real killer application. "Even so, learning more about the hardware you use

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