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In most cases, either because we are used or because we have seen in tutorials and in some text to setAnimationDidStopSelector like this: PLAIN TEXT Objective-C: [UIView beginAnimations: nil context: NULL], [UIView setAnimationDuration: 1.5 ] [UIView setAnimationCurve: UIViewAnimationCurveEaseInOut] [UIView setAnimationDelegate: self], [UIView setAnimationDidStopSelector: @ selector (removeView)]; myView.alpha = 0; [UIView commitAnimations] / / - (void) (removeView [MyView removeFromSuperview] ;) The code above sets the setAnimationDelegate self as delegate and through [...]

In this last period I worked on three applications for Apple iPhone, almost simultaneously. Two have already been approved and are on Apple App Store: TheFirst and iMakeLove. Both applications have adopted the use of an object UIWebView to view the instructions. The object is UIWebView ELEVANCE really comfortable here. [...]

After explaining how to locate our strings in Xcode, as we see now is simple - using the same technique - locate images / views / interfaces built with Interface Builder. Locate graphics resources process, as mentioned, is the same, if we have a ' image already included in our resources, or places a new, and we want to "locate" - that is [...]

Create your own protocol may be useful in a host of cases

Perhaps I should have written "Very very very, short snippets," but it is an excellent and convenient "trick" that I am about to show. Doing the "two" lines of code shown below, you can get the output of any URL and manipulate it. PLAIN TEXT Objective-C: NSString * url = [NSString stringWithFormat: @ "http://www.appleside.it/ "]; NSString * result = [NSString stringWithContentsOfURL: [NSURL URLWithString: url] [...]

Execute a method in n seconds performSelector The whole family is really interesting and may be useful in a multitude of cases. Its application simplest and most common is this: PLAIN TEXT Objective-C: [self performSelector: @ selector (myMethod) withObject: nil afterDelay: 3] / / - (void) (myMethod NSLog (@ "Hello World!" );) however, that the "timer" is not precise. This procedure, therefore, must be used when there is [...]

I would like to show and discuss some examples on how to add and manipulate properties in a Class Objective-C. A classic example, precisely, is as follows: in the definition of our interface class defines two properties name: PLAIN TEXT Objective-C: / / MyClass.h <Foundation/Foundation.h> # import @ interface MyClass : NSObject (NSString * name; NSString * name;) @ property (retain) NSString * name; @ property (retain) NSString [...]

States UIControlStateSelected or UIControlStateHighlighted not work when a UIButton is set to work UIButtonTypeCustom! Or rather, do not work (because reserved for other types of buttons), for example to create a button in two states: toggle note. If we have created two images (stato1.png and stato2.png) for our button, we can proceed in this [...]

An alternative that easy to run a stream a mp3 file on the Apple iPhone could be: PLAIN TEXT Objective-C: / / Use AVFoundation Framework and the header file (. H) are added / / # import <AVFoundation / AVFoundation.h > / / In our implementation / / insert the url of the mp3 file NSString * soundFilePath = @ "http://www.server.com/test.mp3" NSURL * fileURL = [NSURL URLWithString: soundFilePath]; NSURLRequest * request = [NSURLRequest requestWithURL: fileURL]; NSData * DataRaw = [NSURLConnection sendSynchronousRequest: request returningResponse: nil error: nil]; AVAudioPlayer [...]

Both Mac OS X and iPhone OS, we can have easy and direct to the directories - more important - the system which are: PLAIN TEXT CODE: NSHomeDirectory Returns the path to the current user's home directory. NSHomeDirectoryForUser Returns the path to a given user's home directory. NSTemporaryDirectory Returns the [...]