IOS

For example, we need to store the data in the sandbox and then judge and detect the file. Nsarray* Paths =Nssearchpathfordirectoriesindomains(Nsdocumentdirectory,Nsuserdomainmask,Yes); Nsstring* Docudir = [pathsObjectatindex: 0]; Nsstring *

The SDK can now open the setting page directly. In the past, the SDK was not available. At that time, I spent a lot of time implementing it, and the result failed. If you want to open location s The ios5 SDK can now open the setting page directly.

// Nsstring * trimedurl = [stringurl stringbytrimmingcharactersinset: [nscharacterset whitespaceandnewlinecharacterset]; Nsstring* Thestring =@ "Hello this is a long string! "; Nscharacterset* Whitespaces =

If you want to count iOS developmentCode, Including the header file, terminal commands enter the project directory, the command is as follows Find.-Name"*. M"-Or-name"*. H"-or-name"*. XIB"-or-name"*. C"| Xargs WC-l List the number of

I will first attach several articles:1. In app purchases: A full Walkthrough This article is very detailed, and the code can be copied. 2. Store kit Guide (in APP purchase) Translation If you do not know what IAP is, take a look at the translation

Cocoa provides nspredicate to specify filtering conditions. A predicate is a function that represents a real value in a computer, It is a bit like an SQL query condition. It is mainly used to sort objects that meet the conditions from the collection.

IOS supports multiple levels of multi-threaded programming. The higher the level, the higher the abstraction level, and the more convenient it is to use. It is also Apple's most recommended method. The following lists the multi-threaded programming

These days I encountered a very strange problem. For apps developed based on xcode 4.2, the exported IPA installation package cannot be installed on iPod Touch 2. Touch2 firmware version 4.2.1 has been jailbroken. Neither iTunes nor 91 mobile

1. the simplest, most practical, and most commonly used [mobile animation] // Move a view Else --------------------------------------------------------------------------------------------------------------------------------- + (Void) moveview :(

Because Apple does not currently support this function, you can only make an excessive effect after the app is started: [CPP]-(bool) Application :( uiapplication *) Application didfinishlaunchingwitexceptions :( nsdictionary *) launchoptions {self.

There are two implementation methods for graphics in the graphic user interface. One is to draw the image using code, such as quartz 2D technology. The other is to use OpenGL ES.The Code painting method consumes the programmer's mental power, CPU or

The role of hittest: When a screen mask is added to a view without affecting the operation of the following view, that is, the following view can be operated through the screen mask, this function is very useful.   Hittest usage: Add the following

Because of various requirements, the paths to be obtained are inconsistent, so write this article for memo. - (NSString *)getDocumentPath{ NSString *path = nil; // Method 1 NSArray *pathsArray =

IOS gesture code snippet to http://www.oschina.net/code/snippet_54100_8106 The uikit contains the uigesturerecognizer class, which is used to detect gestures that occur on the device. Uigesturerecognizer is an abstract class that defines the basic

# Import # Import Nsattributedstring * getattributedstring (){ Nsmutableattributedstring * attristring = [[nsmutableattributedstringAlloc] initwithstring: @ "this is test! "] Autorelease]; // Change the font color of this to red [Attristring

Recently, restkit has been added to the iPhone project and compiled. However, due to the fact that many unreliable instructions have been found before, the compilation fails for one day and an inexplicable error is always reported. Finally, I found

Add a uiwebview control, uiwebview * mywebview; Add the following code as appropriate: // Obtain the route Nsmutablestring * googlesearch = [nsmutablestring stringwithformat: @ "http://ditu.google.cn/maps? F = D & source = s_d & saddr =

# Import # Import -(Void) sendeventhooked :( uievent *) event { // Do what you want to do here Nslog (@ "interception event: % @",[Eventdescription]); // Execute the original message passing process [Selfperformselector: @ selector

1. First, create a single view application, open mainstoryboard_iphone.storyboard, and add a uislider control and a label in Ib. This label is used to display the slider value. Select the newly added slider control, open attribute inspector, modify

The content of this lecture is very simple: 1. First, create a single view application, open mainstoryboard_iphone.storyboard, and put two lable and two textfiled: 2. Start to write the code: viewcontroller. h: #import @interface ViewController :