IOS

Floating cloud (BGMovingComponentDemo), component   : Engineering Drawing: The file package to be imported is BGMovingComponent. Code: # Import "RootViewController. h "// Add the header file # import" BGMovingComponent. h "-(void)

For the IOSTimer example, leave a note and for the iostimer example.   1. Create a timer. The following is a convenient constructor method,+ ScheduledTimerWithTimeInterval: invocation: repeats:+ ScheduledTimerWithTimeInterval: target: selector:

Ios development -- fixed the inconsistency between cell spacing and settings of UICollectionView When we use UICollectionView to display data, we sometimes want to adjust the cell spacing to a value we want, and then check the API to see that there

IOS closure loop reference (Swift)   1. When will a closure circular reference be formed? When the closure captures its own reference and destroys it at the same time, it will lead to circular reference. If you are not familiar with closures, refer

Ios-use UINib to load xib files and implement UITableViewCellThe essence of the xib file is xml, which describes interface objects. Each object has a very important attribute. The class attribute in the identity inspector panel, when loading the xib

Addtarget and iosaddtarget in ios 1. addtarget. Some use events do not have a direct operation method and need to be called. AddTarget is required. -(Void) setupCustomView { Self. customView = [[CHView alloc] init]; Self. customView.

[Basic iOS control and basic ios ControlA. Separate View from ViewController In the previous code, the data loading logic of the View is placed in the total ViewController, which adds coupling. The details of loading data to the View should be

Ios xmpp-based development-XMPPFramewok framework (2): server connection, xmpp-xmppframewok   Preparations before connecting to the server: 1. Set up an XMPP Server 2. Set the server address and port [_ XmppStream setHostName: @ "127.0.0.1"]; [_

IOS: click the button to killScenario:There is a button in the Cell of tableView. I need to click this button to change the frame of a view on its view controller. However, when I click this button, it will become stuck and will not crash, all

Ios UITextView prompt text Define two uitextviews, one for the input text and the other for displaying the prompt information. If the input text is empty, the prompt information is displayed. Otherwise, the prompt information is not displayed. // 6.

IosUITextField attribute, fieldset attribute   @ Property UITextField * caption; caption = [[UITextField alloc] initWithFrame: CGRectMake (0, self. frame. size. height/2, self. frame. size. width, 32)]; caption. backgroundColor = [[UIColor

IOS learning notes: typedef and ios learning notes Typedef unsigned long weiboId; Typedef defines a convenient type, which is called "macro definition". Unsigned long is an unsigned long integer. This should be the case. unsigned long int, Which

Upload files in iOS and files in ios NSString * boundry = @ "boundry"; // delimiter NSMutableURLRequest * mutableRequest = [NSMutableURLRequest requestWithURL: [NSURL URLWithString: @ "server address"]; [MutableRequest setHTTPMethod: @

IOS network resolutionSynchronous and asynchronous network resolution /* ------------------------ Get synchronization -------------------------------------*/ -(IBAction) GET_TB :( id) sender { // 1. Create a url NSURL * url = [NSURL URLWithString: @

How to switch one tabBarController to another in iOS How to switch the primary tab (containing five Views) to the secondary tab (containing the other five Views) in iOS: -(Void) makeTabBarHidden :( BOOL) hide { If ([self. rootTabBarController.

IOS custom navigation bar background, ios custom navigation bar //-(Void) setBackgroundImage :( UIImage *) backgroundImage forBarMetrics :( UIBarMetrics) barMetrics minute (5_0) Second;-(id) init {self = [super init]; if (self) {UINavigationBar *

Text self-adaptive method of UILabel in iosText self-adaptive method using UILabel (ios7) -(Void) initUserInterface {UILabel * label = [[UILabel alloc] init]; label. numberOfLines = 0; // you need to set the number of lines to an unlimited label.

Irregular iOS ImageView During iOS development, we often need to implement irregular profile pictures, such: So how to implement it? Generally, images are rectangular. If you want to implement irregular portraits on the client side, you need to

Direct/multi-level data transmission between ios Interfaces1. Initiate value transfer (Rewrite the init method to include the data to be passed in later, and then initialize the interface. to use this method, you must have data before initialization)

Verify the validity of the email address (this method is more accurate ).   Code:   -(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view. self. title = @ "verify email validity"; NSString * email = @ "618712810