IOS

Add attributes and methods during iOS Runtime   First: Method BOOL class_addProperty (Class cls, const char * name, const objc_property_attribute_t * attributes, unsigned int attributeCount) in runtime. h) # Include # import @ interface SomeClass:

IOS development and learning # Table view # (1) delete a row I have been writing a blog for a long time. I have written all the other contents in the table view I learned earlier. Today, let's start with deleting a row and hope you can stick to it .

IOS development and learning # Table view # (2) Add rowsContinue to delete the row learned in the previous article. If you delete a row, add the row: we use - (void)insertRowsAtIndexPaths:(NSArray *)indexPaths

IOS NSDictionary and Model This tutorial describes how to extend NSObject through runtime and assign values to the Model using dictionaries. This is a very useful technique.       Runtime details will be detailed later Source code: NSObject +

Official version of ios8 and ios8 During iOS8 development, a CoreLocation usage problem is found. After the operation is executed, the delegate method after positioning is not called. According to the document, you need to call the method before

Click VertigoDemo to enlarge vertigodemo. Initial: After clicking: Engineering Drawing: This code needs to be added to the third-party library Vertigo. Code: RootViewController. h # Import // Add the @ interface RootViewController:

Use of NSLog and NSLog 1. NSLog prints strings in two places: the operating system console and the IDE console. 2. For NSLog, a printed destination is not the console, but the system file "system. log ". Another output destination is not the IED

Floating Point Number processing and removing excess 0, floating point number Code: -(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view. NSLog (@ "-- float-% @-", [self stringDisposeWithFloat: 9.000899990000]

IOS-UIAlertView and UIActionSheetTwo controls in IOS: UIAlertView and UIActionSheet UIAlertView is a message box that appears in the center of the screen. This message box can be used for message prompts or different options. UIActionSheet is a

UIActionSheet dynamic Add button, uiactionsheet dynamic : Code: // Click anywhere to bring up UIActionSheet-(void) touchesBegan :( NSSet *) touches withEvent :( UIEvent *) event {UIActionSheet * sheet = [[UIActionSheet alloc] initWithTitle: @

UIAlertView automatic semi-closed and UIAlertView semi-closed   :   Code: -(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view. // alert UIAlertView * alert = [[UIAlertView alloc] initWithTitle: nil message: @

How to download ios8 beta4 Some of you are not familiar with the ios8 beta4 download and installation tutorial. The following describes how to download ios8 beta4. The fourth test version has many updates. I believe it is the closest version to the

Ios8 beta4 flashback bug Solution What should I do if I crash iOS 8 beta4? The following sections will show you how to solve the iOS 8 beta4 crash bug. Some fruit powders indicate that the group card crash after beta4 is upgraded. How can this

MBProgressHUDDemo, progress : Engineering Drawing: This code needs to be added to the third-party library MBProgressHUD Code: RootViewController. h # Import // Add the header file # import "MBProgressHUD. h" @ interface RootViewController:

Image rotation, image rotation at any angle   Code: -(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view. UIImage * image = [UIImage imageNamed: @ "1.jpg"]; NSData * tempData; if (UIImagePNGRepresentation

KVC & KVO: kvckvo # Import @ interface human: NSObject @ property (nonatomic, assign) NSString * name; @ property (nonatomic, assign) NSInteger age;-(id) initHuman :( NSString *) initname hisage :( NSInteger) Initage; @ end #import

Duplicate symbol _ OBJC_METACLASS _ $ _ GTMBase64, duplicatesymbol This problem occurs when you import the framework. I started to think it was a path or something. I was not able to solve the problem. Later, I found the information on the Internet

IOS Universal Static Framework manual conversion to XCode Cocoa Framework You do not need to create a new Project. manually modify the Project settings. Step 1: In the Project file, modify type and remove static Step 2: you also need to

IOS (Supplemental) touch event processing [1] basic concepts of events UIEvent: an event is an object captured by the hardware that represents the user's operation on the device. There are three categories: Touch events, shaking events, and remote

Delete button for iOS to modify TableViewRewrite before iOS 6 -(Void) willTransitionToState :( UITableViewCellStateMask) state. It is found that the previous method of iOS7 does not work. Under iOS7 Rewrite in custom cell -(Void)