How do I cancel a background thread in Objective-C? I am calling background threads like so: [self performSelectorInBackground:@selector(setupThumbnails) withObject:nil]; It is called when a swipe happens, for each swipe I want to cancel the previous background thread request. ...
I am running a simple function that get's called in multiple areas to help deal with layout on an iPad app during orientation changes. It looks like this: - (void) getWidthAndHeightForOrientation:(UIInterfaceOrientation)orientation { NSLog(@"New Orientation: %d",orientation); end And I call it in various places like this: [self g...
I have a base UIView which takes up the entire iPhone screen when the it is horizontal. When the device is rotated to portrait, I want the view to basically just scale down itself and everything in it to 2/3 the size and center it on the screen so everything is shown: Image: http://img25.imageshack.us/img25/3281/rotateqx.jpg I can't fo...
Hi all! I want to allow user to switch to my app during a phone call and play some sound that the second person will hear. I see here that it was possible even before iOS4 and here that no one knows how to do it. I will really appreciate if someone will spread some light on this issue. Thank you. ...
I am writing an app to open a webpage but the page before asks for an agreement to use it. Can I write a script to outomate and save this response. Thanks ...
Is it possible that when I hit the back button on the navigation bar and after go back to the previous page and then trigger an action on the previous page? ...
I have a function, in UpdateViewController, that is being called by a delegate, MyDownloadController, that will close a modal view (which is the UpdateViewController). -(void)errorDownloading { self.downloadController.delegate = nil; [downloadController release]; [self dismissModalViewControllerAnimated:YES]; } I've trie...
Hello I wrote the code of a card game .. but now it's time todo the graphic and Interface What's the best approach to represent a card ?? a) CALayer b) UIView c) UIButton Which one is best to animate and receive user touches??? What do you recommend?? Thanks in advance ...
So here's the situation: I have a friend who wants me to make an app for his comic website, he wishes for me to set it up so the comics appear in a tab (navigation and tablelist/view). Im not sure what the best method for his XML file is, i do know of the xml code on how do it, but unfortunately, i do not know nor have ever used the code...
I'm trying to either add 3 custom buttons to my navigation controller toolbar on the top of my view or add a segmented control with 3 options. I have the following code on my app delegate for when i create my view controller(fwc) but the buttons dont appear. /* Set up the navigation controller for the Feeding Tab */ // instan...
I am in my mid - forties. I have always had a passion for Software Development. and a tremendous amount of respect for the craft. I, myself, am a Computer Science Major who graduated from college in the 80's. Back in the day, late 80's thru the 90's, I was a very good Borland C++ developer who developed SW as part of a team (I grew i...
I have a UITableView with two sections, which are both empty when my application launches. My app fetches the data from a URL, then puts the data into arrays (one per section) which should be used to supply the UITableView data for each cell. Calling [tableView reloadData] doesn't seem to refresh any of the data, or call any of the dele...
OK, so imagine that my breakpoint in objc_exception_throw has just triggered. I'm sitting at the debugger prompt, and I want to get some more information about the exception object. Where do I find it? ...
I have to draw a line between two points using quartz. At some point I have this code: CGContextBeginPath(ctx); CGContextMoveToPoint(ctx, lastPoint.x, lastPoint.y); CGContextAddLineToPoint(ctx, currentPoint.x, currentPoint.y); CGContextStrokePath(ctx); This lines will create a hard line between the points currentPoint and lastPoint. ...
I have a program which creates some files in the application's Documents directory. I need to get those files from the device for debugging. How can I do it? I am looking for a way to not need jailbreaking, partly because I have to figure out which million letter directory to attack, and partly because I will be talking to Cupertino in ...
Hey Was having a play with settings bundles just before in xcode 3.2.3 (sdk 4.0.1), but then I deleted the settings.bundle folder and 'also moved to trash'ed. Now every time I build I have a dialogue "Save before building?" and the root.plist file there, but greyed out and unselectable. I checked the directory where it was claiming t...
I have a program which runs fine on the device in Debug configuration, but fails as a Release. Anyone have this experience, and how do I fix it? Thx ...
Im making a iPhone app which includes a list of sports teams. RootViewController lists all the teams in a table view. When I click a row I want to load up a TeamViewController, which just shows the record for a single team. The catch is Im wanting to display that single teams details in the Grouped Table View Style. This is causing m...
//list has type of NSMutableArray NSSortDescriptor *sortDescriptor = [[[NSSortDescriptor alloc] initWithKey:@"date" ascending:YES] autorelease]; [list sortUsingDescriptors:[NSArray arrayWithObject:sortDescriptor]]; I got this exception: Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<__NSDate 0x5d57980> v...
Hi all, I want to save the loaded image from server in idle time.I use the following to to save image in iPhone memory. - (void)saveImage:(UIImage *)image withName:(NSString *)name { NSData *data1 = UIImageJPEGRepresentation(image, 1.0); NSFileManager *fileManager = [NSFileManager defaultManager]; NSArray *paths = NSSearc...