iphone

Not sure how to use ccTouchesBegan to do what I want it to do.

So when I see ccTouchesBegan (or touchesBegan for that fact of the matter) I see something like this usually: - (void)ccTouchesBegan:(NSSet*)touches withEvent:(UIEvent*)event { UITouch* touch = [touches anyObject]; } But, what I am not getting is how do you just detect if one object has been touched? For example how would I check i...

xCode for iPhone EXC_BAD_ACCESS error only occurs when stepping through the debugger?

I am working on a project in xCode for iPhone where I am receiving an EXC_BAD_ACCESS error, HOWEVER, I only receive the error when stepping through a function I am trying to debug. When I take my breakpoint off the function, but still run the project in Debug Mode, I never receive this error. Is there anyway to solve this or find out w...

iPhone modal View with parent view semi-visible?

I am adding a modal view using the following code: [self presentModalViewController:phrasesEditor animated:YES]; How can I make the modal view semi-transparent so that the superview "shines" through? My complete method/function looks like this: -(IBAction)showEditPhrases:(id)sender{ PhrasesViewController *phrasesEditor = [[Phrase...

UIImage Rotation

I display an image in a UIImageView (within a UIScrollView) which is also stored in CoreData. In the interface, I want the user to be able to rotate the picture by 90 degrees. I also want it to be saved in CoreData. What should I rotate in the display? the scrollview, the uiimageview or the image itself? (If possible I would like the r...

What is wrong with my @synchronized block?

I have 2 threads in my application, a game update thread and render/IO/main thread. My update thread updates the game state, and the render thread renders the scene based on the updated values of the game state models and a few other variables stored inside an object (gameEngine). The render thread gets executed while the game thread is...

Is there any way to force an iPhone application to relaunch?

Basically -[UIApplication openURL:] would be perfect, if it wasn't for the fact that it doesn't work within the same application (at least on simulator -- if this works on device someone please tell me). It's not a super big deal though if it just relaunches w/o URLness since I can obviously just persist some data. The goal of this is ...

iPhone Prefix.pch best practices

I have seen many developers that add various convenience macros to the Prefix.pch of their iPhone project. What do (or don't) you recommend adding to the iPhone Prefix.pch file? What does your Prefix.pch look like? ...

iPhone colorize UILabel substrings

Hey, I’m parsing a twitter rss feed, and I just need to show tweets, so I don't need MGTwitterEngine. I have already set it up so I can see the complete tweet, the only thing I want it to colorize hashtags and urls. So I would need to slice up the string in different substrings, colorize the hashtags and urls and glue it together in va...

ABPeoplePickerNavigationController - get an address from the ABRecordRef

Once I get an ABRecordRef from the ABPeopleNavigationController, how can I get the contact's street address(s) (if there is one)? ...

How do I remove 3 characters from the end of an NSURL?

Hey, my first question! I've been able to code up most of this RSS reader without enlisting help (through a lot of searches through stackoverflow!) but I'm stumped here. NSString *urlbase = [[NSString alloc] initWithFormat:[links3 objectAtIndex:indexPath.row]]; [[UIApplication sharedApplication] openURL:[NSURL URLWithString:urlbase]];...

More than just EXC_BAD_ACCESS ??

Is there a more detailed error to be found other than the console's EXC_BAD_ACCESS? Where/how can I see it? When my app crashes, I see tHE ERROR in thE XCode status bar, but thE console shoWS nothing else. WheRE do I see more info about what causes the crash? ...

How do be notified when a ViewController is removed from a NavigationController

Is there a way to be notified when a ViewController is removed from a UINavigationController because the back button was pressed? ...

How to format date from string?

I have a string with this value: 2010-05-13 23:17:29 I'd like to format it and am using the following code: NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; formatter.dateStyle = NSDateFormatterMediumStyle; NSDate *formattedDate = [formatter dateFromString:dateString]; [formatter release]; When the debugger reaches the ...

Strategies for Synchronizing Data Between a Rails App and iPhone App

I've written many iPhone Applications that have pulled data from web services and I've worked on synchronizing data between an iPhone App and a Web Application, but I've always felt that there is probably a better way to handle the synchronization. I'd like to know what strategies you have used to synchronize data between your iPhone(re...

FBPermissionDialog bug, showing "Welcome to Facebook" page

I'm experiencing a weird bug that I can replicate pretty consistently with the FBConnect iPhone SDK, more specifically with the class FBPermissionDialog. The result is that instead of seeing the standard extended permissions dialog, the user is shown this: http://cl.ly/15Lx. The only way around it is for the user to delete the app and re...

Update Label text from XML

Hi, I have an XML will is parsed and then fed to a bunch of Labels. I am trying to add a live element so that the labels refresh automatically from the XML. From what I've read this is possible using a tableView and [tableView reloadData] but the design dictates the use of labels. At the moment the labels only get updated on restarti...

Optimization headers for UITableView?

I have an optimization problem for the headers of a table with plain style. If I use the standard view for the table (the classic gray with titles set by titleForHeaderInSection:) everything is ok and the scrolling is smooth and immediate. When, instead, use this code to set my personal view: - (UIView *)tableView:(UITableView *)tableV...

Problems persisting Core Data structures on iPhone/iPad

I have an iPhone/iPad app using Core Data to keep my application data. Sometimes, even though I don't get any error messages, the data is not really saved so when the app starts anew, it's all gone. This problem seems to disappear after physically rebooting the device, but otherwise it's pretty random and hard to track. Has anyone seen a...

TabBarController NavigationController with black backgroundbar

hello I've placed this code my applicationDidFinishLaunching method, to get a black Navigationbar. rootTabBarController.navigationController.navigationBar.barStyle = UIBarStyleBlackOpaque; rootTabBarController.moreNavigationController.navigationBar.barStyle = UIBarStyleBlackOpaque; its working fine, but when the user rearranges the ...

Manually fade in a newly added subview?

I want a view to fade in when being added to the stack via [self.view addSubview:someSecondaryViewController.view]; How do I animate this call so that the view fades in (and out)? ...