I'm trying to implement some rudimentary tabs in a Cocoa editor I'm working on. I am using an NSSegmentedControl and adding segments to it as tabs. I'm using a custom NSSegmentedCell subclass for the tabs to draw a little 'x' icon next to the text for closing tabs and so far it's been going pretty smooth. However, I cannot figure out ho...
like what i want is if i move my finger fast on the iphone screen , then i want like something that it make a proper curve using quartz 2d or opengl es whatever. i want to draw a path in curve style...... i had seen that GLPaint(OpenglES) example ,but it will not help me alot , considering if your finger movement is fast..... something...
Style-wise (and functionally, if there is any difference), for declaring private methods, which of these is better? @interface MyClass() @interface MyClass(private) ...
The short version: Why are the subviews of NSView objects not sent a release message when a Cocoa application terminates? Is there a way to override this behaviour? An example: The MyView class shown below is nothing more than an NSView subclass that reports to the console when it is created and destroyed. I have tested it out and ...
For PDT, I would want "-0700". I'm getting a date in the past to determine how long ago something happened. NSDate *then = [NSDate dateWithString:@"1976-04-01 12:34:56 -0700"]; // Note the hard-coded time zone at the end I'll be constructing the date string elsewhere but I don't know how to access the local time zone. I read the App...
Hello I've got three entities in my application so far: tag, feed and story A tag has got a to-many relationship to feeds and feeds has got a to-many relationship to story. I've got an NSArrayController for each entity, one named tags, one named feeds and one named stories. They all share the same 'managedObjectContext' which they ge...
I would like to write a fuzzy date method for calculating dates in Objective-C for iPhone. There is a popular explanation here: http://stackoverflow.com/questions/11/how-do-i-calculate-relative-time However it contains missing arguments. How could this be used in Objective-C?. Thanks. const int SECOND = 1; const int MINUTE = 60 * SEC...
If I subclassed a UIView from interface builder, and now need an instance of that subclass in my app controller, how would I get that reference (To the subclass and not the UIView)? ...
I have just finished ridding my project of leaks, but there are still thousands of objects under the category "GeneralBlock-0". The number of net allocations is through the roof (its approaching a million as I type) but none of them are leaks and none of them have a size greater than 0 bytes. UPDATE & EDIT: QuartzCore is responsible f...
Hi, What's the difference between a class method and an instance method? Are instance methods the accessors (getters & setters) while class methods are pretty much everything else? Thanks, ...
I have buttons laid out diagonally with their image frames as shown in the picture below. How can I alter the corner points so the buttons don't significantly overlap? I know I could just create a rectangular UIButton and rotate it, but I may eventually need custom-shaped buttons anyway. Also, my button images are essentially text wit...
I am looking for component that draws a calendar grid View, similar to Apple's "Calendar" app. Can't find anything on google. searching for "calendar" or calendar, view, component is too generic term to find anything useful. There are a lot of apps in appstore that have calendars, do they program calendar views at low-level by drawing ...
Hi All, I am very new to the iPhone SDK and have read many threads on RESTful service integration with the iPhone. However I am none the wiser. Can you help? I have some PHP and a MySQL database string on a server. I POST 3 pieces on information from the iPhone to the PHP which then does some thinking and chatting to the database. It t...
I have app that performs login to web service and then requests list of objects using sessionid received during Login. Appdelegate.h .... @property (nonatomic, retain) NSString *sessionId; AppDelegate.m: -(id)init{ queue = [[NSOperationQueue alloc] init]; [queue setMaxConcurrentOperationCount:1]; ..... } - (void)applicati...
I'm actually reposting a question from the iphone development boards. I didn't ask it, but I found it when trying to find its answer. Nobody had yet responded there, so I thought I'd try posting it here. Thanks in advance for any help! Does anybody know any specifics about the algorithm of computing the magnetic heading from the raw ...
I use the same big images in a tableView and detailView. Need to make imageView filled in 40x40 when an imags is showed in tableView, but stretched on a half of a screen. I played with several properties but have no positive result: [cell.imageView setBounds:CGRectMake(0, 0, 50, 50)]; [cell.imageView setClipsToBounds:NO]; [cell.imag...
I'm working on a Cocoa project with some C in it (I know, objc contains C...) and am trying to understand NSNotificationCenters. Here's the situation: I have a struct declared as typedef struct {/*code here*/} structName; In my - (id)init method, I have [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(selName...
Any idea on how to convert int to CGFloat in objective C? ...
Hey guys, I'm running the following code on my phone, where 'object' is a Cat, which is a subclass of Animal. Animal has a property 'color': NSLog(@"Object: %@", object); NSLog(@"Color: %@", [object color]); NSMethodSignature *signature = [[object class] instanceMethodSignatureForSelector:@selector(color)]; NSInvocation *invocation = [...
I'm writing a drawing application that shows a tools view controller when the user clicks an item in a toolbar. However, several of my beta testers have reported that the tools palate opens too slowly. I'm using the standard presentModalViewController:animated: call to display the tools, and I've tried wrapping it in a code block like th...