IOS

Implementation of unread bubble drag and drop in QQ (refer to the idea of a young hacker), bubble drag and drop Link to the original article: http://kittenyang.com/drawablebubble/. the boss is very thoughtful. He is very admired for his age! First,

How to encrypt strings in IOS/implement MD5 encryption in IOS/NSString classification in IOS, iosnsstring After reading it, you will learn: 1. Learn the classification implementation in IOS development, 2. Writing of class methods, 3. MD5 encryption/

IOS Automatic Layout and elastic box When my colleague asked me this question, I came up with the word "elastic box ". Problem: There is a Cell with four controls arranged side by side. The layout is shown in: Hypothesis:

QR code scanning and iOS scanning in ios With the extensive promotion, more and more people will use the QR code in their daily lives. Therefore, many apps gradually add the QR code element. Today, I will introduce you to the iOS7 system, which can

Error during real machine test: No matching provisioning profiles found, provisioning 1. the cause of the error is that the company started to perform a project. When testing a real machine, it used the apple developer account applied for by the

Ios data persistence-introduction and use of CoreData framework, ios-coredata 1. Core Data is the best way to store Data persistently. 2. The final data storage type can be: SQLite database, XML, binary, memory, or custom data type. In Mac OS X

IOS ----- use addressBook to manage the contact to modify the contact, iosaddressbookUse addressBook to manage contacts and modify contacts Modify a contact first loads an ABRecordRef record from the underlying address book, and then modifies the

IOS Status Bar management and ios Status Bar management Before iOS 7: the status bar is managed by UIApplication 1. Hide the status bar: application. statusBarHidden = NO; 2. Set the status bar style: application. statusBarStyle =

Protocol for Ios development: protocol for ios development Protocol is a difficult and important point in ios development. To use it well or understand it well, it may take time to accumulate. Today, let's take a simple look at how to use protocol

Absolutely easy-to-use browser json resolution URL, browser json resolution URL Do you often encounter Chinese garbled characters when entering the request address in the browser? Today I found a good browser to parse the json URL, which is

Swift-Add a custom return button in the navigation bar and swift-navigation bar // 1. Add the return button Func addBackBtn (){ Let leftBtn: UIBarButtonItem = UIBarButtonItem (title: "back", style: UIBarButtonItemStyle. Plain, target: self,

Enumeration of basic IOS data types and IOS Data Types Enumeration is a basic data type in C language. By enumeration, you can declare a group of constants to represent different meanings. It is actually a set of Integer constants. Enumeration is a

The height of UITableViewCell calculates the height of uitableviewcell from the beginning of chaos to the intersection of Heaven and Earth.[Original] UITableViewCell height calculation from chaos initial to Tianji jiaotai  This article is based on

ARC and MRC in the iOS-ten "faces" ambush-interview magic booksI have been in touch with iOS for some time. From the first time I was a newbie who could only write NSLog, to a simple page layout that could use the basic control layout, I learned how

IOS UI advanced 06, iosui advanced 06 CALayer In iOS, what you can see is basically a UIView, such as a button, a text tag, a text input box, and an icon. These are all uiviews, in fact, the reason why UIView can be displayed on the screen

Software authorization control, how does software control authorization? For this app, because it integrates many motor performance tuning functions, we do not want every user to use it, especially competitors, therefore, only internal staff and

IOS KeyChain comprehension and code examples Understanding of KeyChain, refer to http://my.oschina.net/w11h22j33/blog/206713 In this article, the KeyChain is used to save the user name and password. The user name is placed in the attribute and the

IOS sandbox introduction, ios sandbox First, let's briefly introduce what a sandbox is: you can simply understand it as a directory. modifications to this directory will not cause any loss to the operating system. (Here is a little

Talking about iOS memory management mechanism and ios Memory Management The principle of iOS memory management mechanism is reference counting. reference counting is simply to count the ownership of a piece of memory. When this piece of memory is

(IOS) when using auto layout for Complex layout, the related trick of UILabel   Let's talk to the impatient students first.Conclusion(Because I am also an impatient student) 1. For UILabel, SetNumber of linesIt is equivalent to setting a vertical