IOS

In iOS7, not only does the style of the application change, but the status bar changes greatly. We can see that the status bar of UIViewController is basically integrated with the navigation bar. Therefore, the hide/show status method of

I have always wanted to study coreText. Now I have the opportunity to record it. VcD4KPHA + examples/fOqtK7uPbV + examples + MO/0NC/examples + examples/examples + 4 LXItcjQxc + ioaM8L3A + examples/OhoyAyoaLJ + examples

IOS Dev (22) file and Path Author: CSDN laruence Blog: http://blog.csdn.net/preventionsandbox pathLike many other APP platforms, iOS limits the activity scope of each APP and can only be limited to one hard disk space, that is, Sandbox. How to

The status bar and view in iOS7 overlap, so the y coordinate of the application cannot be the same as before. You need to recalculate the settings. Basically, you can see this problem after running Xcode5. Here is a simple example. A Label control

Enable save and restore to add the following two methods to the application delegate of the AppDelegate. m file: RestorationldentifierUIKite does not automatically store all information about the application status. You need to tell UIKit which

Data needs to be stored in relational databases (also the mainstream database of mobile clients ). : Indicates that the value is NULL: unsigned integer value: floating point value: text string: binary data (such as files) • Import the master header

The greatest task for programmers has little to do with coding. Encoding is a kind of logic practice, which is relatively simple compared with other tasks in the daily work of programmers. If you think you are a general programmer, make sure you

IOS animations include attribute animation and transition animation. Before ios4.0Property Animation The content and settings are mainly placed in square brackets: [UIView beginAnimations: @ move context: @ aa]; Set the animation content and

When I was working today, I encountered such a problem .. It's so careless. Mark, 11:44:34. 762 softwareApp [1435: c07] *** Terminating app due to uncaught exception 'nsinternalinconsistencyexception', reason: '***-[JKDictionary setObject: forKey:]:

A. [] indicates an array B. {} indicates the relationship between the dictionary and the object model. C. There are many applications. Basically, the main data transmitted by mobile development is JSON. D.    　　　　　　　　　 To use JSON, obtain data from

1. synchronous request download The interaction between synchronous requests and users is not good, and it is prone to freezing. After sending the request, wait for the response from the server. After returning the data, perform the next

IOS dev (9) creates a blank Interface Author: CSDN laruence Address: http://blog.csdn.net/preventioncreate an Empty AppOmittedAppDelegate# Import @ Interface AppDelegate: UIResponder @ Property (strong, nonatomic)

Recently, you need to display directory data in tableview. There is a difference between level 1 and level 2 directories. The structure of the database is as follows: Id is the primary key, name is the name, and parent is the id of the level-1

1. Create a single view project 2. ViewController. h @ Interface ViewController: UIViewController {UIImageView * _ imgView; // display image} @ end 3. ViewController. m initialize _ imgView // Initialize image view _ imgView =

You may encounter such a problem or need such a feature.The height of each cell varies with the content of the cell. Especially when the content is not just textIn fact, it is very easy to implement this function.First of all, the so-called Dynamic

First look at the effect: VcD4KPHA + uMPX6bz + 1 tCjrL/logs + logs/bP69KqtcS + logs + m8/logs + o6zWrsew1/logs/P7sS/vfi2yKOs1 + 69/logs + logs + zbfOxLz + 1tC907/aus3K9NDUvt/m5cjnz8kjuw.vcd4kpha + PC9wPgo8cHJlIGNsYXNzPQ = "brush: java; "> #

The speech synthesizer technology is launched by iOS7, which can realize the non-network speech function and support multiple languages. define a member variable to record the voice synthesizer AVSpeechSynthesizer # import 1 @

We all know that mobile phones have the vibration function. In fact, this function is very simple to implement. We only need to use a few functions: -(Void) motionBegan :( UIEventSubtype) motion withEvent :( UIEvent *) event -(Void) motionEnded :(

There are two ways to convert non-ARC Code to ARC Code:1. Use Xcode's automatic conversion tool2. manually set certain files to support ARCI. Xcode's automatic conversion toolXcode provides an automatic conversion tool to convert the old source code

In Apple's official introduction, we can see an understatement: "The _ cmd variable is a hidden argument passed to every method that is the current selector ", in fact, _ cmd indicates the selector of the current method in the Objective-C method,