IOS

1. synchronous requests can request data from the Internet. Once a synchronous request is sent,ProgramUser interaction stops until the server returns data,2. asynchronous requests do not block the main thread, but create a new thread to operate.

The example app below demonstrates the use of the following controls. You can use the slider, step control, and button to control playing an animation in the Image view. Uiimageview) Slider (uislider) Step control (uistpper) Shows the

Original article: cocoa and DOTNET     One rowCodeShow your location Mapkit in IOS integrates the positioning function. You can use a line of code to display your current location on Google map. The Code is as follows: -(Ibaction)

13.1 event Overview 13.2 touch events 13.3 gestures 13.1 event Overview An event is the object that the system continuously sends to the application when the user's fingers touch the screen and move on the screen. The system passes an event to an

Introduction: Grand Central Dispatch (GCD) is a technology developed by Apple to optimize applications that support multi-core processors and other systems of Symmetric Multi-processing systems. This is based on the Thread Pool Mode for concurrent

Create a text with a hyphen and a text with a hyphen : Code: -(Void) viewDidLoad {[super viewDidLoad]; // UILabel * label = [[UILabel alloc] initWithFrame: CGRectMake (50,100,200,200)]; label. backgroundColor = [UIColor redColor]; [self. view

Talking about gestures and touch in iOS, talking about iOS gesture touch I. response chain Various operation events will be encountered in IOS development, and these events can be responded through the program. First, when an event responds, you

Learning Object-C from scratch --- the fourth day (3), object-c --- the fourth day Today, we will first summarize the previous data types: Note: The id data type is a special data type of OC. It can be used to store any data type and is the basis

IOS Development Series-ARC introduction, ios series-arc1. What is ARC? The so-called ARC is the Automatic Reference Counting, that is, the Automatic Reference count. ARC is introduced from iOS5. The introduction of the ARC mechanism aims to simplify

IOS safari BUG SummaryIOS safari BUG summary safari has a strange BUG in the bubble mechanism of elements in the DOM, which can only be triggered in iOS versions ~~~ For the BUG reproduction case, see Online DEMO: Address bug performance and

Stanford iOS7 Open Class 4-6 notes and Demo, Stanford ios7 Open Class 4-6 1. do not misuse the id of the variable type. If it is not careful, it is easy to cause errors during program execution, because the compiler only checks the type of the

IOS app real machine debugging and ios real machine debuggingIOS app real-machine debugging Required: $99 account. You don't have to read it any more.   First, log on to http://developer.apple.com/devcenter/ios/index.action. if you have purchased

Xcode3.2.5 NoCertificateDevelopmentDebuggingThe tutorial is the content to be introduced in this article. Here is a weak reminder,XCode4.0 it has not been tested yet and is for reference only. Let's take a look at the

After a month, iOS 5 has already passed four Beta versions, about 9. Apple wants to improve its new system, during this time, we were constantly optimizing iOS 5 and adding new features. Recently, Apple officially began to provide iOS 5 Beta5 for

Apple App Store does offer a great platform for many developers. However, it is not easy to stand out from more than 60 applications. If apps uploaded by developers can obtain Apple's recommendation space, they can be said to be of great benefit to

When you create a Window-based Application project, MainWindow. xib is automatically generated and contains at least one UIApplicationDelegate and one UIWindow object. However, after Xcode4, when a new project is created, the Project template is

What you need to know before developing the iPhone SDK: I. iphone features: 1. iphone screen resolution: 640*960; 2. Garbage collection supported in objective-c is not supported in iphone development; 3. In principle, the iphone does not support

First show the implementation effect:  Method 1: 1. Create a project for the base view and name it "AnimationTest ". Open the ViewController. xib file, drag an Image View, a label, and a slider, place the imageView in the middle, and the other two

When you use the iPhone to browse the UC browser's "App Store", you can directly open the App details and download page in the App Store. The effect is as follows: Let's see how to achieve this effect. [Plain] A SKStoreProductViewController object

Google couldn't open it, and then Baidu ...... Lima ...... Baidu's IQ is exposed at a moment, and the desired results are not found at all. It's awesome to make a decisive 360 search. The basic data types of Objective-c are: int/long int /. Suddenly