iphone

Scroll the entire page with with UITableView that doesn't take up the entire screen

The only UITableViews I have worked with thus far are sized to fill the entire page. I'm trying to create a page in my app where I will have an image and a label on the top of the page followed by a UITableView to hold comments below it. Something like this springs to mind: http://www.inquisitr.com/wp-content/fbb.jpg My problem is if ...

Would there be a market for this idea (cross platform VM for iPhone OS)

Note: The VM mentioned in here is not like in VMWare or VirtualBox, it is more like Java Virtual Machine (JVM), (as well as Python and Ruby). That is, the fact that objective c is an interpreted language, should make it easier. For a long time I wondered if the following idea worth a nickel or just a waste of time and energy. I am wi...

Format string, integer with leading zeros

Hi all! I Use this code: NSString* strName = [NSString stringWithFormat:@"img_00%d.jpg", pp]; and works fine, but if pp took the value of 10 for example I wish have img_010.jpg as result, and not img_0010.jpg... how can I format the string?? thanks ...

How to store an image in Core Data?

Just a guess: I make an attribute and make it's type "binary". But in the end, how would I use that? I guess there is an NSData behind the scenes? So that attribute actually takes an NSData? ...

MPMoviePlayerController into a view

Hi all! I need to play a video into a cocos2d project.. and my question is: how can I put MPMoviePlayerController into my view like this:? UIView *theView = [[CCDirector sharedDirector] openGLView]; thanks very much!! ...

How to fill a path with gradient in drawRect:?

filling a path with a solid color is easy enough: CGPoint aPoint; for (id pointValue in points) { aPoint = [pointValue CGPointValue]; CGContextAddLineToPoint(context, aPoint.x, aPoint.y); } [[UIColor redColor] setFill]; [[UIColor blackColor] setStroke]; CGContextDrawPath(context, kCGPathFillStroke); I'd like to draw a gradient...

is there any way to get country names from iPhone APIs?

Hi, I want to provide a picker to the user to select a country. I've had a look in the NSLocale docs and I can get a list of all of the country codes supported on the device, which feels like a start: Code: NSArray *codes = [[NSArray alloc] initWithArray:[NSLocale ISOCountryCodes]]; But I can't work out if there is a programatic way to ...

EXC_BAD_ACCESS in CFAttributedStringSetAttribute and NSNumber?

Hi all, I am getting an infuriating EXC_BAD_ACCESS error in an objective c app I am working on. Any help you could offer would be much appreciated. I have tried the normal debug methods for this error (turning on NSZombieEnabled, checking retain/release/autorelease to make sure I'm not trying to access a deallocated object, etc.) and ...

iPhone:How to make an integer array and store values in Obj-C?

Hi, I want to know a simple thing, which i couldn't get it is that i want to store 10 values in an integer array dynamically and then i have to check that stored values and compared with the current values whether it is same or not in some other condition. Initially i tried same like C array, int temp[10], but seems to be that is not po...

How can I take zooming into account when a user touches a UIScrollView?

I have a UIImageView inside of a UIScrollView. The parent scroll view allows zooming and panning. When the user taps a point in the scroll view, I want to find the location in the raw image inside the UIImageView - i.e. I want the point after including any zooming and panning the user has done in the scroll view. Right now, I have a U...

iPhone + OpenGL + Touches: FPS drop

Hey there, Recently I ran into a very strange issue: touching the screen of the iPhone and moving a finger around can eat up to 50% of my FPS. Yeah, I checked my code for possible bottlenecks – not the issue. The last resort I tried before writing this post – commenting out all the touch processing code and looking at FPS then. Results ...

Integrating GSL onto iPhone Xcode

I have been trying to integrate GSL (Gnu Scientific Library) into an iPhone project using Xcode. The challenge is GSL has all the modules in different folders, yet when their header files are reference, they often reference instead of or . At least with I could use Xcode's recursive header file search to find it. But with , basical...

Connecting to TFS from iPhone

I'm building this iPhone application to connect to a secured TFS server (one that requires authentication before letting you access its web services). When I access this server in a browser, the first thing it will do is ask me for credentials (username/password) and then connect me to the TFS server if those credentials are correct. I ...

Set tag and hidden for objects on custom UITableViewCell

I am re-using Apple's AdvancedTableViewCells example to create a custom, fast-scrolling tableview. Specifically, I am using their CompositeSubviewBasedApplicationCell method which draws the content on the tableviewcell with drawRect Everything works, but how do you hide a label or set the tag for a label or image using their method? D...

Is NSManagedObjectContext autosaved or am I looking at NSFetchedResultsController's cache?

I'm developing an iPhone app where I use a NSFetchedResultsController in the main table view controller. I create it like this in the viewDidload of the main table view controller: NSSortDescriptor *sortDescriptorDate = [[NSSortDescriptor alloc] initWithKey:@"date" ascending:YES]; NSSortDescriptor *sortDescriptorTime = [[NSSortDescript...

How do I keep a CALayer, sublayer of a CATiledLayer, from changing it's scale after a zoom ?

I have a CATiledLayer that is used to display a PDF page (this CATiledLayer is the layer type of my UIView which is a subview of a UIScrollView). I want to add overlay markers on this page. So I add a sublayer to my CATiledLayer. This sublayer again hosts the different marker's layers and acts as a grouping layer. So graphically, I have...

Convert a string of numbers to a NSTimeInterval

I know I must be over-complicating this because it NSTimeInterval is just a double, but I just can't seem to get this done properly since I have had very little exposure to objective c. the scenario is as follows: The data im pulling into the app contains two values, startTime and endTime, which are the epoch times in milliseconds. Th...

Iphone sdk code to capture images at 15 FPS on 3g mobile and sending to ffmpeg server .

I'm writing an app code to do video recording on iPhone much like all the available apps :) ... All im trying to do is capture screen from iPhone camera on 3g mobile and sending them to server .. but want some time efficient approach for sending to server and capturing image sequences ... its like i want to send 15 images / second to s...

UIViewAnimationTransition and landscape

Hi! I'm having a problem with UIViewAnimationTransitionCurlUp and landscape mode. In my landscape application I have a view controller that manages two fullscreen views. In the controller I have a container view for the transitions. To switch between the two views, I use a curled transition but the animation is performed as if it were ...

iPhone SDK: PushViewController not working

I am trying to create a basic navigation application with a header and detail screen. My problem is the detail screen is not working. The code below is for the opening the detail view and placing it on the nav stack. My problem is the detail screen is not being pushed and I'm not sure why? I have verified the method below is firing. An...