IOS

APIS of great interest   1. Managing the Lens Position lensPosition setFocusModeLockedWithLensPosition:completionHandler:  2. Managing Image

1. the bounds of the UIWindow changes (the Window itself is rotated) Before iOS 7, the bounds of Window will not change with the direction, but after iOS 8, with the rotation of the device direction, window. bounds. size. width and window. bounds.

Before ios7, we developed two-dimensional code scanning or production, which must be developed using third-party open-source libraries. Then, when upgraded to ios7, Apple provided the QR code scanning function in passbook, and the scanning speed was

Now I am also learning the Swift language. I often visit many apple communities and forums and see many strange phenomena in the circle. I find many people are busy translating Swift books and publishing Swift videos. I personally admire their

Lazy loading is also called delayed loading. To put it bluntly, it is to say that in development, when the resources need to be used in the program. Resources are not loaded when the program starts. These resources are loaded only when some

To be honest, the sliding deletion Effect of UITableView cell is ugly before ios7, but after the flattening of ios, this sliding deletion is still very nice. It is also very easy to implement. This effect is mainly implemented in the UITableView

-(Void) specified mselecw.mainthread :( SEL) aSelector withObject :( id) arg waitUntilDone :( BOOL) waitPerformSelectorOnMainThread: withObject: waitUntilDone:Call the method of the receiver in the main thread Based on the default modeInvokes a

Swift is a type security language. The type of security language requires that the type of values in the code is very clear. If your code has a part of the value of the String type, you cannot mistakenly pass the Int type. In view of Swift's type

1. Case study: Partition Table view with index function, 01 Figure 01 2. team_dictionary.plist group A A1-South Africa A2-Mexico A3-Uruguay A4-France group B B1-Argentina B2-Nigeria B3-Korea B4-Greece group C C1

Traditionally, the first application in a new language will print "Hellow, Word". In Swift, you only need one line of code: pringln("Hello, word") If you have written c or object-c code, the Swift code looks very familiar, and a line of code can

I haven't been here for a long time. I am continuing to study the new language Swift! Create Class (Overload effect) // Create Class Create class MyClass {// Properties member variable init () {// Constructor} // Method member Method func doIt ()

Create a swift empty project with the Xcode6-Beta, create a UIViewController, and select swift language. @ IBOutlet var titleLabel: UILabel? @ IBOutlet var button: UIButton? // @ IBOutlet weak var button: UIButton? /@ IBAction func btnClick

NSLog must be used in development, but it is especially performance-consuming. Therefore, it must be removed after the product is released. It is quite difficult to process NSLog in a large development project, so you can consider macro definition

1. Transmit data through Delegate This section focuses onTo explain how to useDelegateTransfer data between different windows. For details, see the following details. For example, in window 1, open window 2 and enter a number in window 2. The number

Functions and Closures Use func to declare a function, call the function by using the parameter list of parentheses, and use --> to separate the return type, parameter name, and type of the function. For example: Func greet (name: String, day:

IOS Performance Optimization Analysis First, you must familiarize yourself with several concepts. What is the difference between PNG and JPG?Png images have alpha channels, while jpeg images do not. Png lossless compression, jpeg allows you to

1. storyboard processing directly allows the controller to inherit the uitableview controller. Then, in the storyboard, the controller inherited from uiviewcontroller is killed, and a tableview controller is dragged to connect to the master

There are currently three solutions: 1. UIScrollView + UITableView. Implementation Method: Add UITableView to UIScrollView. Set UIScrollView proxy and Method - (void)scrollViewDidScroll:(UIScrollView *)scrollView{ int currentPostion =

# Import "KUViewController. h" # Import "KUProgress. h" @ InterfaceKUViewController () // Download progress class, inheriting UIview @ Property (weak, nonatomic) IBOutlet KUProgress * progressView;   @ End   @ Implementation

IOS and ANDROID operating systems are currently popular mobile operating systems and are widely used by mobile terminals and smart devices. They both adopt advanced software technologies for design, in order to facilitate application development,