IOS

Hefei invoicing, [13538017315 Mr. Dai QQ2016771784], unified industry and business. In the first half of this year, the inventory and transaction volume of the property market increased, the project sales cycle extended, and the turnover slowed

IOS chat pull-down refresh the implementation of chat records, ios chat records1. Ideas Recently, I was developing a social app to implement a similar pull-down refresh chat record function. There are two implementation methods: 1. directly fetch

Layout and redirection between uiviews in iOS UIView is the base class of all views in iOS development. It represents a rectangular area on the screen and can process the rendering and touch events of this area. UIViewController is the base class of

[Study Notes] [C Language] cyclic structure-for, learning note structure-1. Use: For (Statement 1; condition; Statement 2){Loop body}Statement 1: initialization statementStatement 2: Incremental statement (statement executed after the loop body is

Network Programming, windows Network Programming   So in order not to impede the running of the main thread, is it better to use the GCD thread for network download processing? The answer is no. Asynchronous APIs are strongly recommended for

Settings of iOS Tabbar In fact, the customization of iOS Tabbar is very high, and we do not need to duplicate the wheel. Below are some common settings of tabbar collected by the author, I hope to help you. Set the selected color of tabbar The iOS7

Set the navigation bar topic in IOS development and the navigation bar topic in ios development /*** The system calls this class for the first time (only one class is called once) */+ (void) initialize {// set the navigation bar topic

Differences between single-thread and multi-thread, single-thread, and multi-thread Programs, processes, threads Program: executable Application Generated by source code. (For example, QQ. app) Process: A running program can be considered as a

Asynchronous loading of iOS tableView image Cache1. create a viewController .. the hfile implements UIScrollViewDelegate and UITableViewDelegate, and declares ICTableViewDelegate (this is used to load the image if the image is cached, and request

IOS capture program crash log We often encounter a crash when running an APP on an iPhone or iPad tablet. Sometimes an APP is turned on, but it suddenly crashes. This is definitely a headache for developers. So how can I get the iOS device crash log?

Explanation of nil, Nil, NULL, and NSNull in iOS This article mainly introduces the detailed information about nil, Nil, NULL, and NSNull in iOS. For more information, see Several null symbols in ObjC often almost killed me. These basic things need

UITextField: Chinese Character Input restriction; uitextfield: Chinese Character Input[Self. textField addTarget: self action: @ selector (textFieldDidChange :) forControlEvents: UIControlEventEditingChanged]; When the input changes, the listener

IOS_UIButton simple operationUIButton Style typedef NS_ENUM(NSInteger, UIButtonType) { UIButtonTypeCustom = 0, // no button type UIButtonTypeSystem NS_ENUM_AVAILABLE_IOS(7_0), // standard system button

IOS Image Upload and Processing  To read images from a camera or from an album, you must use the UIImagePickerController class. When using UIImagePickerController, you must implement the following two Protocols:        1. Read images from the

# Three Methods of left-sliding pop in IOS-navigationThree methods of left-sliding pop in IOS-navigation: pop Method If we do not customize the back button in navigation, we can directly use the left-sliding pop method that comes with the system.

IOS learning 03 QQ login interface, ios03 Now I am studying IOS development and developing a simple QQ login interface, for example: 1.1 create a project and design interface. The interface is like two labels, two texts, and a Button login Button.

IOS face recognition (detection) CoreImage of iOS has built in the face detection interface, and the detection accuracy is average, especially for the side face, basically cannot be detected. However, compared with other similar products, it is also

Obtain the rang of repeated characters in the string in ios development In iOS development, you will often encounter the problem of processing strings. For a string, you will often encounter repeated characters that must be processed, the following

[Oc learning notes] array traversal and sorting, oc learning notes 1 // array traversal (variable array example) 2 // for traversal 3 NSMutableArray * aa = [NSMutableArray array]; 4 [aa addObjectsFromArray: @ [@ "ss ", @ "ddd", @ "sad"]; 5 for (int

[Study Notes] [C Language] scanf function, learning notes scanf Function1. Introduction This is also a function declared in stdio. h. Therefore, you must add # include before using it. When the scanf function is called, the address of the variable