IOS

IOS Cell asynchronous image loading optimization, detailed explanation of cache mechanism, and ioscell Recently I have studied the problem of Asynchronously loading network images in UITbleView. iOS apps often see this interface.A tableView displays

The use of UIScorllView and UIPageControl implements the image carousel, First, we need to create a project and select Single View Application in the first Application in iOS. Preparations have been completed. Now we are going to the Main.

Ios ui advanced 03, iosui advancedNavigation Controller 1. The navigation controller always displays the view of the stack top controller. 2. The navigation controller must be used to redirect between interfaces. 3. Calling the pop method does not

MBProgressHUD elegantly prompts, mbprogresshud prompts Project homepage: MBProgressHUD Download instance: Click to download Quick Start: When executing a task that requires a long time, the most important thing to use MBProgressHUD is to ensure that

IOS loop reference I asked about circular references during the interview today, so I looked at it. It turns out that Block is easy to cause circular references. Today, we will briefly introduce some circular references. What is circular

Seamless image scrolling components for iOS developers are encapsulated and used, and ios seamless Some Garden friends often ask, "Is there a Demo of Infinite Image scrolling? ", I really don't have a Demo of the picture rolling process. Today, we

Objective-C compound and objective-c COMPOUND I want to talk about Composite Learning faster with questions What is composite? What are the advantages? When to use composite? What is dependency? How can this problem be solved? Composite is to

Basic use of iOS Databases Summary of the basic usage of the database today: The database used by iOS is generally sqlite3. before using the database, you must first import the database framework. Otherwise, an error occurs. Next, introduce the

IOS program starts The underlying environment setup before the main function (Code copying, memory opening, and other operations related to starting a process) is not described. We start with the main function. 1 main Function Int main (int argc,

[Reading Notes] iOS-Objective-C's basic knowledge of C extension, iosobjectivec 1. Xcode's. m extension indicates that the file contains Objective-C code, which should be processed by the Objective-C compiler. The C compiler processes the file

IOS multithreading implementation 3-GCD, ios multithreading 3-gcd When you knock on the three gcd letters, the first one in sogou shows "rolling sheets" ^_^ I. Introduction GCD is the Grand Central Dispatch (a powerful Central Scheduler). It is

Usage of the UIButton control in iOS and interpretation of some parameters, iosuibutton   In the UI control, UIButton is a type of control that is extremely common. Its Class Object creation is different from that of most UI controls using the

The realization of the animation effect while waiting, waiting for the realization of the animation effect When we load the page when requesting the network, there is an action, the effect is as follows: Source code can be found on the Internet

Develop other stone series for IOS-install Alcatraz Alcatraz can help us extend Xcode's functions and manage Xcode plug-ins using direct integration.The specific method is as follows:1. Open the terminal2. Enter the following command line: mkdir -p ~

Example of iOS album access and photo album Storage Example of iOS album access and photo album Storage Effect:1. Click the "Access album" button to access the system album. After selecting it, it will be displayed in imageView.2. Click to take a

Ios reads large files // Read File Content operation-(void) loadFileContentsIntoTextView {// open a file through the stream NSInputStream * inputStream = [[NSInputStream alloc] initWithFileAtPath: filePath]; [inputStream open]; NSInteger maxLength =

Select the implementation principle of the effect from the drop-down list. Effect of navigation bar and drop-down box The result is the effect selected in the drop-down box in the middle of the navigation bar. When you select one, the above words

IOS delays program execution and iOS Program Execution // Gets stuck in the main thread [NSThread sleepForTimeInterval: Time (seconds)]; // After a delayed task is customized, it will not be stuck in the main thread and will be executed in the

IOSQuartz2D-04-manually crop images and save them to albumsEffect Procedure Draw a rectangle, and an alertView is displayed, prompting whether to save the image and clicking "yes". Save the image to the album and view the saved image in the

The event transfer and response chains in iOS and ios First, let's take a look at the process of event generation and delivery in iOS: 1. After a touch event occurs, the system adds the event to a queue event managed by UIApplication. 2.