IOS

Tab implementation principle, Tab implementation principle 1: implement the class rolling effect of the header The main code is as follows: UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 64, screen_width, 40)];

# Document name: use Objective-C for programming, # Document name: use Objective-C for programming # Objective-C (OC) When writing programs for iOS and OS X, Objective-C is the main language used by programmers. OC is an extension set of C language.

Ios ui basics 07 and iosui07 TableView Attribute// Set the cell height of each row @ property (nonatomic) CGFloat rowHeight; // set the height of each set of headers @ property (nonatomic) CGFloat sectionHeaderHeight; // set the split line

The @ selector function in iOS transmits multiple parameters. 1. In general, use the self generator mselector: SEL withObject: id method.   [self performSelectorOnMainThread:@selector(testAA:) withObject:[NSArray arrayWithObjects:@1,@2, nil]

Basic for iOS development: Create a Table View application in three different ways In iOS, the most common control is Table View, which can be understood as a list. In Android, It is a ListView. It is often used in News clients, mailboxes, memos,

IOS development note _ multi-thread dependency in AFN   We usually encounter two network requests at the same time during development, and then download the resources and merge them. What should we do in AFN? Of course, some personal packaging

UITableViewDataSource protocol, uitableview Preface: In iOS development, table view UITableView is an important view for UI design. What protocols do you need to comply with when using Table view UITableView?   UITableViewDataSource table View data

Delete IOS UITableView and iosuitableview UITbableView is used as the list display information. In addition to the display function, it is sometimes used for deletion, such as a shopping cart. You can directly use the system-provided delete function

IOSQuartz2D-03-customized personalized Avatar Cut an image into a circle and display the border of the specified width and color around the image. Implementation It is mainly composed of two parts of different sizes. The blue background area is

IOS multithreading technology 2IOS multithreading technology 2 NSOperation NSInvocationOperation // Create a queue NSOperationQueue * queue = [[NSOperationQueue alloc] init]; // create a subtask, define a subtask to be a subclass of NSOperation

IOS-Precautions for using in-app payment, ios-Precautions I. iOS development. If the purchase is successful, we need to send the credential to the server for verification. In consideration of network exceptions, the sending credential operation on

IOS development completes C language every minute-struct and enumeration I. structIn the previous array sharing, we saved data of the same type through an array. We can use an array to represent this whole, but the array has the following features:

Ios ui basics 05 and iosui05 UIScrollView UIScrollView procedure 1. Create UIScrollView 2. Add the content to be displayed to UIScrollView. 3. Set the rolling range (contentSize) of UIScrollView) Note: If you want

IOS Network -- NSURLCache sets the network request cache and iosnsurlcache Today, I checked the HTTP protocol and saw the cache-control in the response Header. So I went into some in-depth research. I found a class I ignored in iOS-NSURLCache class.

CoreText and coretext I. Introduction to basic knowledge1. Character and Glyphs) An important process of text display in the typographical system is the conversion from a character to a font. A character is an element of the information, and a font

IOS code custom cell example The base color and yellow color are the key points for custom cell codes. Start with these points.   MyCell. h   # Import   @ Interface MyCell: UITableViewCell @ Property (nonatomic, strong) UILabel * ageLabel; @

One way to solve the EXC_BAD_ACCESS error -- NSZombieEnabled (convert), excbadaccess Crash is often caused by EXC_BAD_ACCESS errors during iOS program development. When such errors occur, Xcode will not give us too much information to locate the

IOS text attribute dictionary During iOS development, it is believed that the parameter is a NSDictionary dictionary when the font, color, underline, and other attributes are required. But which key values are correct in the dictionary? Let's

Use UIScrollView and UIImageView to Implement Circular image scrolling, Scenario: In the development work, sometimes we need to implement a set of images to scroll cyclically. When we use UIScrollView in combination with UIImageView to implement the

[Switch] How to pass App Store Review (iOS developer Experience Sharing), appios The CocoaChina communication community once initiated a topic discussion about why iOS developers failed to review and the solution. The valuable reply content is as