IOS

[Basic iOS control and basic ios ControlA. make a chat interface similar to QQ. each cell contains the sending time, sender (Avatar), and sending information. place the other party's profile picture on the left and our profile picture on the right.

IOS development and learning # Table view # (4) Filling Grouped-style grouping tables Buy on your behalf directly: @ Implementation ViewController-(void) viewDidLoad {a = [NSArray arrayWithObjects: @ "ant", @ "alpaca", @ "albatross", nil]; B =

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 developer account initial test Account Application I have read several questions about the developer account. It is mainly for the small white like me. 1. Which developer accounts does Apple have? 2. What are the charges for these accounts?

IOS changes the returned action events in the navigation bar of the system. # Import @ Protocol BackButtonHandlerProtocol @ Optional // Override this method in UIViewController derived class to handle 'back' button click -(BOOL)

IOS development and learning # reminder processing # (1) response reminder View Here I used the Navigation Controller in the view library. The reminder operation mainly uses alertView: clickButtonAtIndex: method implementation in the

IOS UITableView displays the bottom cell If tableView returns multiple sections with only one row in each section, after [_ diaryTableView reloadData], add NSIndexPath * indexPath = [NSIndexPath indexPathForRow: 0 inSection: _ contents. count-1];

IOS reflection mechanism: Use of objc_property_tIOS property reflection: To put it bluntly, all the attributes of the two objects are retrieved dynamically and automatically bound based on the attribute name. (Note: if the object class is a derived

IOS note UIKit_UITextField, uikit_uitextfield -(Void) viewDidLoad { [Super viewDidLoad]; // Built upon your compliance with the Self. numTF. delegate = self; Self. passTF. delegate = self; // Display the ciphertext Self. passTF. secureTextEntry =

[Basic iOS control and basic ios ControlA. DefinitionThe iOS program has an nsicationicationcenter singleton object, which is used to publish notifications between different objects. Any object can publish notifications in nsicationicationcenter to

IOS screen layout and ios Layout 1. Screen layout of iPad and iPhone In IB, the screen or widget size is in the unit of points. In retina technology, a single point includes four pixels, while a single point includes one pixel without the use of

Ios redirects the Log to a file and saves it. ioslog For real machines, logs cannot be saved, so it is difficult to analyze the problem. Therefore, it is necessary to save the log to the Docunment directory of the application and set it to a shared

Determines whether the string is null or not.   Code: -(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view. self. title = @ "judge whether the string is empty"; NSLog (@ "-- whether the string is empty-% I-",

ARC ---- automatic reference count, arc count I. Memory Management/reference count 1. reference counting memory management methods (the following four methods)Object operation OC MethodGenerate and hold methods such as alloc/new/copy/mutableCopyd

[Basic iOS control and basic ios ControlA. requirement 1. similar to Weibo content display 2. avatar 3. name 4. member ID 5. content 6. split line 7. graph (optional, optional) 1 // 2 // ViewController. h 3 // Weibo 4 // 5 // Created by

In iOS, there is a letter search and click on the Right of Tableview to directly locate the problem.During project creation, I encountered such a problem that tableview calls -(NSArray *) sectionIndexTitlesForTableView :( UITableView *)

IOS: Set UILabel line spacing for instances // Create UILabel * label = [[UILabel alloc] initWithFrame: CGRectMake (7, 5, TABLEVIEW_WIDTH-HEADIMGVIEW_HEIGHT-20-24-20, 0)]; // automatically wrap the label. numberOfLines = 0; // set the label content

IOS basics 7: Databases In today's smartphone world, many of our data is stored on mobile phones, such as memos, address books, etc. Tell you, the search and storage speed of various file formats is not as fast as that of the database. After all,

IOS Experience 1: Self-written network data requests to a third-party framework for resumable upload/download Brother Huang is a project. Generally, no matter how complicated a data request is, as long as the request has been written, the call will

IOS UILabel (occasionally updating ing) Var text: String! @ Property (nonatomic, copy) NSString * text // Label text Var attributedText: NSAttributedString! @ Property (nonatomic, copy) NSAttributedString * attributedText // Label attributedText