IOS

[Code notes] Click the option box that appears, and click "Code notes" I ,. 2. Engineering Drawing. 3. Code. RootViewController. h #import @interface RootViewController : UIViewController@end   RootViewController. m # Import "RootViewController. h

04-switching image arrangement, 04-image Arrangement ViewController. h file: 1 @interface ViewController : UIViewController2 3 @property (weak, nonatomic) IBOutlet UISegmentedControl *segmentCtrl;4 5 - (IBAction)indexChange:(UISegmentedControl

Bits of knowledge, bitsofknowledgeHow to obtain the system version of the current device !!![[[UIDevice currentDevice] systemVersion] floatValue]Get App versionNSDictionary * infoDictionary = [[NSBundle mainBundle] infoDictionary];// App name//

A small tool class for image cropping. It is called using a code to crop the tool class. Some time ago, I wrote a simple small tool class, that is, image cropping, and animation changes to frame hiding; This class directly provides a class method

Common GCD methods and common GCD Methods // 1. Create a main thread (Serial) Dispatch_async (dispatch_get_main_queue (), ^ { // Refresh the interface code }); // 2. Create an asynchronous thread (parallel) Dispatch_async (dispatch_get_global_queue (

Common ios problems (Real-time update) and ios real-time update 1. Error code: No ubuntures to compile for (ONLY_ACTIVE_ARCH = YES, active arch = x86_64, VALID_ARCHS = armv7 armv7s) Command Line Error when building this target. You can search for

Interface design and design of the [edit] module of meitu xiuxiu beautifying pictures 　　 Effect Currently, the rotation and sharpening interfaces have not been done yet. The editing module allows you to crop, rotate, and sharpen images. 1. Click

Ios development-application settings and user default settings [1. Use of bundle] And iosbundle   On the iphone, the app will have an exclusive app setting in "Settings". By selecting this menu interface, you can enter and change various options in

Objective-C data set and objective-c set 1. NSSet 1. It is an unordered collection class that manages multiple objects. The biggest feature is that duplicate objects are not allowed in the collection, which is similar to the mathematical meaning of

Remove unnecessary split lines in UITableView or hide split lines between cells.I. Remove extra split lines from tableViewFirst, customize a method-(void) setExtraCellLineHidden: (UITableView *) tableView{UIView * view = [UIView new];View.

JSON-to-Model internal resolution, json-to-model resolution I. Ideas: 1. Obtain all attributes and their types through the model type. 2. process the obtained json. Type processing 3. Consider the inconsistency between the dictionary key value and

IOS development-ActionSheet usage and pop-up dialog box In our iOS development, we often see the following interface requirements: .   That is, click the button and a selection prompt box appears. We use two methods today (ActionSheet and

Implementation and use of Singleton in iOS Singleton is the most common design pattern in our development, as well as in iOS. A singleton ensures that the instance of a class is unique in the program, facilitating sharing of resources and data. The

Objective-C memory management, Management scope: any object that inherits NSObject. Basic data types are not managed. Essentially: Because objects and basic data types are different in the system's storage space, local variables are mainly stored in

JSPatch uses note,   Hotfix is widely known for its role. Both Android and iOS have their own technologies. However, compared with the release of Android on the day (If your project does not require grayscale), iOS hot update is more significant.

IOS development-use Charles for http packet capture In my previous blog "introduction and use of the network packet capture tool Charles", I briefly introduced the installation and cracking of Charles and the introduction of Charles packet capture

Ios swift (1) Bubble sorting, iosswift // Bubble Sorting stability maximum time complexity high O (n (2), too many exchanges, one exchange equals three assignment is the easiest Var count = 0 Func sortInts (inout data: [Int]) { For var I = 0; I Var

IOS-xib use 2 --- xib encapsulation and MVC, ios-xib2 --- xibmvc I. (M) Create a model: Bytes --------------------------------------------------------------------------------------------------------------------   II. (V) Encapsulation xib:

[Code Note] The UIAlertView with the input box and the uialertview with the input box I ,. Ii. Code. // Click anywhere. The input box (void) touchesBegan :( NSSet *) touches withEvent :( UIEvent *) event {UIAlertView * dialog = [[UIAlertView

Objective-C sorting and objective-c sorting In Objective-C, sorting is divided: 1. Sort objects in the Foundation framework 2. Sorting custom objects Example: Each student has a score attribute, Which is sorted by score. Custom object Student. h #