IOS network data download and JSON parsing, and ios data json Parsing

IOS network data download and JSON parsing, and ios data json ParsingIOS network data download and JSON Parsing  Introduction In this article, I will introduce how to use NSURLconnection to download data from the network, parse the downloaded JSON

IOS determines that NSString only contains numbers

IOS determines that NSString only contains numbers // Determine whether it is an integer:   -(BOOL) isPureInt :( NSString *) string { Ns‑* scan = [ns‑scannerwithstring: string]; Int val; Return [scan scanInt: & val] & [scan isAtEnd]; } // Determine

IOS message mechanism

IOS message mechanism1. Local push IOS push notifications can be divided into local push and remote push notifications. Remote push notifications are similar to messages sent to us by friends even when we lock the screen, then an alertview is

A circular progress bar is achieved through the busel curve and the strokeStart and strokeEnd attributes of CAShapeLayer.

A circular progress bar is achieved through the busel curve and the strokeStart and strokeEnd attributes of CAShapeLayer. # Import @ interface CircleProgressView: UIView/** start value (0-1) */@ property (nonatomic, assign) CGFloat fstartValue; /**

IOS-target-action Design Mode

IOS-target-action Design Mode   IOS-target-action Design Mode   The essence of the target-action design pattern is to call the target action Method for events generated in the host.   Next we use a UIView to implement the UIButton click

Encapsulation of iOS-binary Protocol

Encapsulation of iOS-binary Protocol   Encapsulation of iOS-binary Protocol     For SDK socket communication, there will be a binary communication mode. Based on the previous work content, we will summarize: First, we can use the string and binary

Delegate between two viewcontrollers in iOS

Delegate between two viewcontrollers in iOSThe second interface transmits values to the first InterfaceSecond Interface   // Configure the protocol on the Second Interface @ Protocol ChuanZhiDelegate -(Void) chuanzhid; @ End @ Interface

What is the difference between OC and Swift? What is the difference between OCSwift?

What is the difference between OC and Swift? What is the difference between OCSwift? 4. constants and variable declarations The oc variable Declaration uses the type variable name = variable value method. The type is the built-in data type or custom

Common iOS design patterns-singleton Design Patterns

Common iOS design patterns-singleton Design PatternsDetailed description of Singleton Design Mode Basic concepts of Singleton Design Patterns in IOS when Singleton mode is used, basic steps for creating Singleton mode in a non-ARC environment,

Ios development: Memory Analysis of OC objects and oc objects for ios development

Ios development: Memory Analysis of OC objects and oc objects for ios development Recently, I am about to start looking for an intern. I have prepared some pen-based questions, read the interview experience of the experts, and found that I still

How to Use nsicationicationcenter in the notification center

How to Use nsicationicationcenter in the notification centerNSNotificationCenter(Notification center) Note]The observer needs to be removed from dealloc. Obtain the notification center singleton object Nsicationicationcenter * center =

IOS. UI advanced. UITouch touch and UIGesture gesture. 01. Events, touch events, ios. uiuigesture

IOS. UI advanced. UITouch touch and UIGesture gesture. 01. Events, touch events, ios. uiuigesture I. iOS events: 1. event: When you click a cell phone screen on your cell phone, slide your cell phone, and shake your cell phone, the mobile phone

Differences between OC and Swift 3. Differences between OCSwift 3

Differences between OC and Swift 3. Differences between OCSwift 3 11. switch structure in swift Difference 1: The switch condition in oc can only be an integer. The switch condition in swift can be set to almost any data type. Difference 2: Each

APNS remote PUSH notification PUSH deviceToken and apnsdevicetoken

APNS remote PUSH notification PUSH deviceToken and apnsdevicetokenThe server pushes messages to the client: when the application is pushed to the background, or it is not running at all (our code is powerless)In this case, the application wants to

IOS. UI advanced. UITouch touch and UIGesture gesture. 02. responder object, responder chain, ios. uiuigesture

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Ios development-commonly used macro definition (partial conversion), ios

Ios development-commonly used macro definition (partial conversion), ios 1. When release is enabled, the log is blocked.C code # If defined (DEBUG) & DEBUG = 1 # Else # Define NSLog (...){}; # Endif #if defined (DEBUG) && DEBUG == 1#else#define

IOS network image loading framework (4 methods in total)

IOS network image loading framework (4 methods in total) Framework name: UIImage + WebCache. h inherited from UIimageView In the framework, there are four methods for loading network images: 1. normal loading 2. Thread NSThread 3.   # Import

Ios runtime swizzle

Ios runtime swizzle #import @ Implementation NSObject (Extension) + (void) extends :( Class) class originSelector :( SEL) originSelector otherSelector :( SEL) otherSelector {Method othermehtodd = class_getClassMethod (class, otherSelector );

IOS local notification

IOS local notification# Import "AppDelegate. h"@ Interface AppDelegate ()@ End@ Implementation AppDelegate-(BOOL) application :( UIApplication *) application didfinishlaunchingwitexceptions :( NSDictionary *) launchOptions {// If you have been

Reading Notes-Web development for IOS

Reading Notes-Web development for IOSWeb Development  The main request method is Get request: the data is in the URL in plain text, the data volume is small Post request: the data size is not limited to HEAD request: Request Header

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