IOS

After you 've decided on the appearance of your icon, follow these guidelines as you create it:* Use the PNG format.* Use white with appropriate Alpha and no shadow.* Use anti-aliasing.* For toolbar and navigation bar icons, create an icon that

1. First, make it clear:The pixel resolution of the iPhone 3g/3gs screen is 320x480;IPhone 4 and iPod tou4's screen pixel resolution is 640x960. 2. In order to be compatible with apps before IOS 4.0 and run on iOS 4, Apple designed a logical

[0. Brief introduction of block] Block is an extension of the C language introduced by ios4.0 + and Mac OS X 10.6 + to implement the features of anonymous functions. In Wikipedia, block is a feature that Apple Inc. adds to C, C ++, and objective-C,

Cabasicanimation * flip = [cabasicanimation animationwithkeypath: @ "transform. Rotation. Y"]; Flip. tovalue = [nsnumber numberwithdouble:-m_pi]; Cabasicanimation * scale = [cabasicanimation animationwithkeypath: @ "transform. Scale"]; Scale.

Openurl usage: View plaincopyTo clipboardprint? [[Uiapplication sharedapplication] Openurl: [nsurl urlwithstring: appstring]; [[Uiapplication sharedapplication] Openurl: [nsurl urlwithstring: appstring]; The system appstring includes: View

Reference [1] http://developer.apple.com/library/ios/#documentation/EventHandling/Conceptual/EventHandlingiPhoneOS/Introduction/Introduction.html#//apple_ref/doc/uid/TP40009541-CH1-SW1 1. Event Type It mainly involves three types of events: Touch,

Document directory 4. uiswipegesturerecognizer) 5. uirotationgesturerecognizer (finger rotation operation on the screen) 6. uilongpressgesturerecognizer (long-pressed gesture) Uigesturerecognizer is an abstract class that defines the basic

/*** @ Brief Image Compression * uigraphicsgetimagefromcurrentimagecontext function to compress the image storage size * Detailed * @ Param [in] the source image; the specified compression size * @ Param [out] N/A * @ return: the compressed image * @

Ios ui label customizing tutorial Http://gssdaily.com/forum/viewtopic.php? F = 21 & amp; T = 69067 ByJack» Tue Jun 26,201 2 pmIos ui label customizing tutorial Customizing a ios ui label Here in this tutorial we will look how to customize a label.

When we use xcode to develop iPhone and iPad applications, we can use the following table to set the application icons and startup images: Image name ImageSize(Unit: pixels) Application Platform Icon.png 57x57

The following are some of my summary. If something is wrong, I hope you will give me more advice. We can see this code in the official document: In the MyClass. h file @ Interface MyClass: NSObject {MyObject * myObject ;}@ Property (nonatomic,

We have all learned bit operations. In our work, using good bit operations can greatly improve program efficiency. Here is a simple example of my application: -(Void) buttonClick :( id) sender { UIButton * button = (UIButton *) sender; Int tag =

Before understanding CALayer, You Need To Know What layer is. The middle layer of IOS development is a very important concept. You can find the layer component in the subclass of UIView. The layer is a child film located on a fixed canvas and can

1. First, go to idea (./Downloads). After the Download is complete, directly pressurize the Download folder: 2. Open xcode to create Empty-based Application, The created Project is saved on the desktop. By default, there are four Frameworks

# Define SINA_API_AUTHORIZE @ "https://api.weibo.com/oauth2/authorize" # Define SINA_APP_KEY @ "3456404324" -(NSURL *) getOauthCodeUrl {// Obtain the auth_code or access_token, which is left for webview // Https://api.weibo.com/oauth2/authorize //

UITapGestureRecognizer and UIPanGestureRecognizer applications: I. UITapGestureRecognizer application:-(Void) singleOne :( UITapGestureRecognizer *) sender {} // write the action of the event to the function.- （void）singleTwo:(UITapGestureRecognizer

We often need to set UIlabel, UIbutton, and UItextfield fonts during development. UIFont is used at this time. The following describes the usage of UIFont for reference only. UIFont is used to obtain and set font information. This class provides

NSSet, NSMutableSet, and NSCountedSet classes declare an unordered set of programming interface objects (hashed storage: The storage location in the memory is not continuous ). The NSArray and NSDictionary classes declare an ordered set of

Block can be used as a replacement for delegatge. It is easy to use and does not need to write too much @ protocol to define interfaces. However, pay attention to the following points. (1) The block is not an object, so it is not valid for the

In May, I began to study the in-app purchasing technology on the iOS platform. In the past, if you want to make a paid application, you need to make a Lite simple version. Before purchasing the product, you can use the Lite version to experience the