IOS

 This enables safari;NSURL * url = [[NSURL alloc] initWithString: @ "http://www.baidu.com"];[[UIApplication sharedApplication] openURL: [url autorelease]; If you use safari to open a link in webViewOf course, this must be delegated to

Introduction: I recently learned some page Jump animation effects. The imatewithduration method of UIview is used. Of course, the previous beginAnimations can also be implemented.   For example, an image is gradually popped up from the lower part of

1. copy from the cache folder to the document folder [cpp] NSString * sqlFile = @ "test.zip"; NSArray * cachePath = Export (NSCachesDirectory, NSUserDomainMask, YES); NSString * cacheDir = [cachePath objectAtIndex: 0]; NSString * databasePath =

Configure mongo.apple.com to log on to mongo.apple.com, and then perform the following steps: Create an App ID without wildcards for the application. Use this App ID to generate and install the corresponding Provisioning Profile file. Configure

-(NSURL *) convertTxtEncoding :( NSURL *) fileUrl {if ([FileManagementAPI getFileSize: [fileUrl path]> 1024 * 1024.0f) {return fileUrl ;} NSString * tmpFilePath = [NSString stringWithFormat: @ "% @/tmp/% @", NSHomeDirectory (), [fileUrl

Some code snippets 1. hexadecimal color value conversion # define UIColorFromRGB (rgbValue) [UIColor colorWithRed :( (float) (rgbValue & 0xFF0000)> 16)/255.0 green :( (float) (rgbValue & 0xFF00)> 8)/255.0 blue :( (float) (rgbValue & 0xFF)/255.0

Previous: http://www.bkjia.com/kf/201301/185018.htmlUINavigationController implements navigation in App delegation. @ property (nonatomic, strong) UINavigationController * nav ;. in the m file, @ synthesize nav;-(BOOL) application :( UIApplication *)

1. create fake framework. Use this XCode Plugin: iOS-Universal-Framework to directly create a static library XXX. framework. 2. download the source code of ASIHttpRequest: ASIHTTPRequest3. use the above plug-in to create the fake static iOS

UIToolbar * topView = [[UIToolbar alloc] initWithFrame: CGRectMake (0, 0,320, 30)]; [topView setBarStyle: UIBarStyleBlack]; // UIBarButtonItem * helloButton = [[UIBarButtonItem alloc] initWithTitle: @ "Hello" style: Custom target: self action: nil];

Currently, the vast majority of applications can be updated, and you will receive an update notification when you open the application. This is conducive to user updates. Many people want Xcode to provide corresponding APIs to find the application

WWDC2012 released iOS6 and introduced some new features for Objective C to simplify programming. The following are new features that require XCode4.4 and later versions: 1. the declarative sequence of methods is no longer required to call the

NSMutableDictionary-(void) setObject :( id) for :( NSstring *) key when the id is nil, crash will appear. However, when setValue is used, nothing happens. Currently, Dic uses setValue instead of setObject to construct MutableDictionary. There is no

A simple arrangement of Implementation ideas: 1. Since we want to display translucent masked images, UIImageView must be indispensable. 2. To display multiple pages and Slide left and right, embed the UIImageView into UIScrollView and set the

Inherits UILabel and reloads the drawTextInRect method. // 1. header file# Import @ Interface InsetsLabel: UILabel@ Property (nonatomic) UIEdgeInsets insets;-(Id) initWithFrame :( CGRect) frame andInsets: (UIEdgeInsets) insets;-(Id) initWithInsets:

Use the following code to implement a circular photo frame: [Plain]CGContextRef context = CGBitmapContextCreate (NULL, self. bounds. size. width, self. bounds. size. height, 8, 4 * self. bounds. size. width, CGColorSpaceCreateDeviceRGB (),

1 PrefaceDuring App creation, the UITextField Keyboard will block the following content. Because IOS does not have its own mechanism, you need to write your own method to control it, today, we will introduce a simple method to address the problem of

ASIHTTPRequest can automatically cache downloaded data. This is useful in many cases: When you are offline, you cannot download the data again, and you need to access the data.After the data is downloaded last time, you only need to download the new

1 Preface Objects of Block Objects can be inline or encoded as independent code blocks. Today we will introduce its usage. 2. code exampleToday, we do not need to develop the IOS framework. We will use simple programs for development. Next we will

1 Preface UILongPressGestureRecognizer is used to listen to and capture gesture events from somewhere where a user uses his fingers to hold down the screen for a long time. 2. code exampleZYViewController. m   [Plain]-(Void) viewDidLoad{[Super

1 PrefaceObtain the graphic environment, and use the CGContextMoveToPoint and CGContextAddLineToPoint functions to draw lines. 2. code exampleZYViewControllerView. m   [Plain]-(Void) drawRect :( CGRect) rect {[Self drawRooftopAtTopPointof: