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To release instance variables owned by objects, the common method is to call release in dealloc. For exampleCode: Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->@ Interface myclass: nsobject

1. Use filemanage to read document filesNsfilemanager * filemanager = [nsfilemanager defaultmanager]; Nsarray * paths = nssearchpathfordirectoriesindomains (nsdocumentdirectory, nsuserdomainmask, yes); nsstring * documentsdirectory = [paths

This article from: http://www.devdiv.com/forum.php? MoD = viewthread & tid = 58560 & Highlight = % BD % D8 % Cd % BC Reference: http://www.devdiv.com/forum.php? MoD = viewthread & tid = 31687 & Highlight = % BD % D8 % Cd % BC

Use category to add a method for uicolor:  # Import @ Interface uicolor (random) + (Uicolor *) randomcolor; @ End   Implementation file: @ Implementation uicolor (random) + (uicolor *) randomcolor {static bool seeded = no; If (! Seeded)

1: original from: http://www.cocoachina.com/bbs/read.php? Tid = 32931   I created File Folder filename, one of which is saved in the folder Image . How can I read the image and display it in uiimageview? Below is what I wrote Code I don't know

When Renaming an image, you may encounter the following problems: 1. The image cannot be renamed and saved to the album, Solution: 2. Save the image to the applicationProgramIn the sandbox, and rename it, but how does the computer view in the

1. In the camera example in the basic iPhone tutorial, how to save the photos to the photo gallery. For details, see Demo:   Solution: In the first method,-(void) imagepickercontroller :( uiimagepickercontroller *) picker didfinishpickingimage :(

Reprinted: How to create your own plist file in xcode? Nsarray * paths = nssearchpathfordirectoriesindomains (nsdocumentdirectory, nsuserdomainmask, yes ); Nsstring * documentsdirectory = [paths objectatindex: 0]; Nsstring * Path =

1: Problem 1: retaincount problems when removefromsuperview is used Nslog (@ "before remove the cameraviewcontroller's retaincount is % d", [cameraviewcontroller retaincount]); [Cameraviewcontroller. View removefromsuperview]; Nslog (@

Store arrays in files Nsarray * array1 = [nsarray arraywithobjects: @ "WTW", @ "WTM", nil]; [Array1Writetofile: @ "/wtqwtq.txt" atomically: Yes]; Nsarray * Get = [nsarray arraywithcontentsoffile: @ "/wtqwtq.txt"]; Nslog (@ "% @", get );  

From: http://blog.csdn.net/sjzsp/article/details/6319927   The video playing class has been customized on the iPhone.Mpmovieplayercontroller,We only need to call it. The following describes the example of calling a mobile player in detail:

Cgrect cgrectinset (cgrect rect, cgfloat dx, cgfloat Dy ); The application of this struct is centered on the original rect. See Dx and Dy for scaling or amplification. Each rectangle in the image is the above rectangle as the reference

Reference: http://blog.prosight.me/index.php/tag/addsubview Why addsubview: After a view object, release it First lookCode: 123 Imgview * Imgview= [ [ Imgview alloc ] Initwithframe: Cgrectmake ( 10 , 0 ,300 , 300 ) ] ;[

Reference: http://www.cocoachina.com/bbs/read.php? Tid-16065.html   1. Use presentmodalviewcontroller to create a mode dialog box for switching between views.   How to disablePresentmodalviewcontroller   Presentmodalviewcontroller If

Custom Textbox Control to intelligently enter numbers and periods CodeAs follows:   Public   Class Textboxextention: textbox{ Private   Bool Ishavepoint { Get ; Set ;} Protected   Override   Void Wndproc ( Ref Message m) /

When using sp_executesql to execute a dynamic SQL statement, if the passed parameter is the table name or column name, the execution fails. CodeAs follows: View code 1 Alter proc Test 2 3 As 4 Declare @ value nvarchar ( 400 ) 5

Reference address: http://www.cocoachina.com/bbs/read.php? Tid-75389.html   Address 2: http://stackoverflow.com/questions/4198676/warning-iphone-apps-should-include-an-armv6-architecture-even-with-build-config/7687527#7687527   When you click

I hate MFC for many years. I have encountered this kind of mouse.ProgramIt's annoying to be able to run things ~~~ :-( No one knows how to drag and drop controls and move the mouse over mobile development. Here we use the windows-base program as

1: For details, see the demo. A problem to be solved in this example is the notification event. Name: uiapplicationwillterminatenotification is not executed at all. uiapplication * APP = [uiapplication sharedapplication]; [[Nsicationcenter

1, Quick sorting uses the divide and conquer policy to divide a serial (list) into two sub-serial (sub-lists ). Steps: Picking an element from a series is called a benchmark ), Re-sort the series. All elements are placed before the