IOS

Common attributes: frame, bounds, and center Important Method: addsubview adds a child control to a parent control. superview returns the parent control of the Child control. Common functions:-(void) removefromsuperview; -(Void) insertsubview :

1. Obtain the date of the current day Nsdate * today; Today = [nsdate date];   2. [[uidevice currentdevice] orientation] the following seven statuses are available for obtaining device statuses: Uideviceorientationunknown Uideviceorientationportrait

This article is transferred from the network, the original address Memory usage is critical during iPhone development. Not only should we allocate and use the memory reasonably, but we should also pay attention to the memory leakage problem, because

Find iPhone Memory leakage: leaks Tool Guide Original address: http://www.mobileorchard.com/find-iphone-memory-leaks-a-leaks-tool-tutorial/ See also: http://www.iposei.com /? P = 127 My game development is coming to an end. Recently, I often use

Document directory Aesthetics integrity Consistency Intuitive operation Feedback Metaphor User Control A good user interface should follow the "human-user-thinking and work" concept in the user interface design principle, rather than the

In iOS, objective-C uses reference counting to manage memory. Recently, when writing animation effects, it encountered a memory leakage problem. For the delegate declaration of objects, we recommend that you use assign in the objective-C

From: http://www.wuleilei.com/blog/327 VoIP is used in recent projects. The full name of VoIP is voice over Internet protocol, that is, network telephone, which is frequently used in daily life, such as Skype. There are not many VoIP libraries that

I did flash development. Due to ANE and other development issues, I decided to invest in iOS development.   IOS development aims at ANE and interest.   Document preparation: the English version is also prepared for temporary translation

Icationcenter center usage: [Original] nsicationicationcenter may not be created in the class of the message receiver. You can put it in another class. instantiate it first, and then assign the value of observer to the new object. Here, the observer

Required Conditions: 99 $ (You don't have to read it any more) My system is in different versions of 10.5.7, which may be slightly different. First, log on Http://developer.apple.com/iphone/index.action If you have purchased 99 $, log on to the

Nsdateformatter is used to convert between nsdate and nsstring: Nsdate to nsstring: Nsdate * Date = [nsdate date]; nsdateformatter * dateformatter = [[nsdateformatter alloc] init]; [dateformatter setdateformat: @ "yyyy-mm-dd hh: mm: SS"]; // set

1.// Homeviewcontroller. h // Maildemo # Import # Import @ Interface homeviewcontroller: uiviewcontroller -(Ibaction) displaycomposersheet; @ End   2.// // Homeviewcontroller. m // Maildemo // # Import "homeviewcontroller. H" @ Interface

1. uitouch The phase property returns a constant of the touch phase, indicating that the touch starts, continues, ends, or is canceled. (Constant returned by phase:

Use plist files to access files   In IOS File Processing (1), modify the viewdidload method of homeviewcontroller. M.   -(Void) viewdidload{/* Nsstring * filename = [[self documentspath] stringbyappendingpathcomponent: @ "content.txt"]; // nsstring *

I. xml: an open-source parsing class, gdataxmlnode (add it to the project), and add the libxml2.dylib framework Frequently used methods: 1.-(ID) initwithxmlstring :( nsstring *) STR options :( unsigned INT) mask error :( nserror *) Error 2.-(ID)

Classes used in network connections: 1. reachability 1. Add the. h and. m Files of Reachability, and then add systemconfiguration. framework. 2. Three Network statuses are defined in reachability: Typedef num { Notreachable = 0, // No

The above is the effect of the navigation bar, which is widely used in projects and needs to be mastered.   Create a project and select "empty application". The project name is navigationcontrollertest. Create a new uiviewcontroller view named

The main content of Memory Management in IOS is to solve the crash problem !!! Crash In iOS, 100% of the reason for crash is memory problems. 1. Memory leakage (open up space, no recycling; keep opening up without releasing) 30 m (a program 3gs, 3

The iPhone contains many frameworks and libraries, from the underlying sockets to different layers of encapsulation, you can easily add network functions to the program. (1) BSD socket. The underlying socket, which is a common API for UNIX network

Method 1: Add [self. textfiled resignfirstresponder] to the button clicking event. Method 2: In the XIB file, you can not add a view control on the view page. A simple method is to set the class of the view page to uicontrol (this class inherits