Swift

Custom TabbarcontrollerSometimes the default Tabbarcontroller can not meet our development needs, such as you want to use the color icon, the system only calls the outline of the icon, so we need to define our own tabbar. Method One: Modify the

What is a closure? Closures are blocks of code that can contain free (unbound to specific) variables that are not defined within the code block or in any global context, but are defined in the environment in which the code block is defined (local

1, the location of a variety of common positions Use the buttons to show how to center a component (horizontally, vertically), and place it in a corner (upper-left corner, upper-right corner, lower-left corner, lower-right corner)

Swift Loading BrowserPull a control on the page @IBOutlet weak var web:uiwebview!Override Func Viewdidload () {Super.viewdidload ()Do no additional setup after loading the view, typically from a nib.var url = nsurl (string:http://www.111cn.net);var

The previous article (Swift-dropdown) Refreshes the functionality of the data (using Uirefreshcontrol) to refer to the ability to use Uirefreshcontrol to easily implement the dropdown refresh, through Attributedtitle property to set the descriptive

Core image can automatically optimize the image by analyzing the properties of the image and the area of the face. We just need to call Autoadjustmentfilterswithoptions This API method to get each automatic enhancement filter to optimize the picture.

Sometimes to highlight a picture, you need to add a shadow effect to the picture. Through the Uiimageview Layer shadow property settings, it is easy to implement this function. Not only Uiimageview, but other UI controls can also set shadows. The

Use of self in swift The ambiguity that is generated when the method is invoked to eliminate access properties. When a function's parameter name has the same name as its own property name, for example: /* Use Self to indicate whether the

This time suddenly think of a very long ago to use the knowledge-waterfall flow, originally want to use a simple method, found himself went astray, finally can only malicious to rewrite uicollectionviewflowlayout. Below I will implement the

Swift arrays are used to store sequential lists of values of the same type. Swift has to strictly check that it does not allow the wrong type to be stored incorrectly in the array. If the assignment creates an array to a variable, it is always

IOS Swift sums up navigationcontroller problems and how to solve them Recently used the swift language to do some iOS project, quite some experience, write down some profound problems for their own benefit, to serve everyone 1. The font color of

In this iOS application development tutorial, we intend to implement gesture recognition. As you know, iOS supports a large number of gesture operations that provide good application control and an excellent user experience.let's get started! You

The original text is renewed and the book is folded for the first time. Many other programming languages have a "protected" setting that restricts certain class methods to be used only by its subclasses. After Swift has supported the access

Destructors are invoked before an instance of a class is disposed. A destructor is defined with the keyword Deinit, similar to that of the initialization function, which is defined with INIT. Destructors apply only to class types. 1. Principles of

Classes and structs are blocks of code that programmers often use in code. In classes and structs, you can define constants, variables, and functions by defining related properties and methods to achieve a variety of functions. As with other

Bubble Sort Principle1. The data to be sorted, the two are compared, the small put in front, the big put behind2. Step 1 for each pair of adjacent data in turn, and when sorted to the last element, we can guarantee that the data is the largest.3.

Examples of this article for you to share the swift ring progress effect of the implementation code, for your reference, the specific content as follows Effect Chart: Implementation code: ////Viewcontroller.swift//Pureswiftauto////Created

In development, we sometimes need to deal with the original uiimage, such as resizing or scaling operations. 1, extended UIImage In this case, the UIImage is expanded to add two methods, which are used to resize and resize the scale

Problem Description: Today, the mobile phone to the computer, intends to pass the Xcode for real machine debugging. When the compilation is running, start the error directly. Mobile phone screen, Xcode this side displays the error information as

Recently we really started to learn Swift, and when we called the function, we had a problem: do we write the function name?Let's take a look at two examples:1FuncTest(A:int, B:int)Int {Return a + b}test (a:1, B:1)(A) Test (1, B:1)B2ClassTest {var