IOS

1:iostate rdstate () const; The return is iostate, which is simply an int value. Set to 1 in a position of 2 data to indicate a state 2: Thedefinition of failbit is as follows, when the second digit of binary data is 1, the data is indicated.

Recently to do the iOS project encountered a callback, time to put the relevant information, the following is the content: Callback A callback is the binding of a piece of executable code to a specific event. This code is executed when a specific

The picture below is the screenshot of Jingdong Mall Many people see this, the first thought is to use TableView and CollectionView to do the switch, the author was just beginning to think so, and later found that there is a very simple method,

To remove an array element while traversing a mutable array Nsmutablearray *copyarray = [Nsmutablearray Arraywitharray:array]; NSString *str1 = @ "Zhangsan"; For (Addressperson *pername in Copyarray) { if ([[Pername name]

IOS 10 new regulations, in the pickup camera, photo albums, contact information, the microphone needs to add the specified key in the Info.plist, otherwise flash-back: Info.plist NSPhotoLibraryUsageDescription Use of photo albums requires

Modal Simple IntroductionFirst, a brief introduction In addition to push, there is another way to switch the controller, that is modal Any controller can be ⽰ out through the modal form. Modal default effect: The new controller is drilled from

One of the least known features of IOS 8 and above is a deep link to application settings that enable users to activate locations, notifications, contacts, cameras, calendars, and health settings based on the needs of the app. Most applications

This article for everyone to share the iOS image blur effect of three ways to achieve, for your reference, the specific content as follows 1. Realize the effect in order as follows: Original picture, iOS8 effect, Core image effect, vimage effect -

Basic use of Uitabbarcontroller First, a brief introduction Uitabbarcontroller and Uinavigationcontroller similar, Uitabbarcontroller can easily manage multiple controllers, easy to complete the switch between the controller, the typical example

Picture cutOne, use quartz2d to finish the picture cut1. Display the picture in a custom viewFirst draw the picture to the view. Draw the picture to a point according to the original size.Code: Copy Code code as follows: -(void)

In the project function has a positioning cllocation needs, encountered some knowledge and difficulties, after the help of the heroes, problem solving, hereby share for everyone to learn, I hope we learn and progress together. One, simple

First, thumb instructions and arm instructions The thumb instruction is 16 bits, so the storage code is highly dense and saves storage space. But the function is not complete, it is only the arm instruction (32 bit) set supplement, is a subset

First, a brief introduction 1. What is Uipopovercontroller is a common controller in ipad development (not allowed on the iphone) Unlike other controllers, it inherits directly from NSObject and does not inherit from Uiviewcontroller It takes up

About the iOS layout automatically after the IPhone6 is Autolayout,autolayout is very good, but sometimes we need to page layout manually, the VFL is a choice, and the VFL is not complex, understanding is very easy, the actual development of the

This article has drawn a cool download progress bar, share for everyone to reference, the specific content as follows First, the realization of ideas1. To implement a drawing, it is often necessary to customize a UIView subclass, overriding the

A subclass of Caanimation that is used to animate transitions, providing layers with animations to move out of the screen and move into the screen. iOS has less effect than Mac OS x transitionsUinavigationcontroller is the animation effect of

iOS Radar effect This time the new app begins, and a product requirement is to do a radar chart similar to the following: The middle picture is the user avatar and then needs to show a radar scan effect. Analysis of the general composition of

In the project development, the level list often encounters, the simple point two level list utilizes the UITableView header to be possible, then the simple point three level list by adjusts the cell height to also be possible to achieve the three

One, what is Cocoapods 1. Why need CocoapodsIn the development of iOS, there is always the use of Third-party open source libraries, such as Sbjson, afnetworking, reachability and so on. When using these libraries, you typically need to: Download

There are a lot of restrictions on the Internet TextField input length method, but I do not think it is perfect, accurate to say is not in line with the actual development requirements, so here to tidy up the TextField limit the length of the input