I'm writing a game for iOS. It has a game map, and I'm using OpenGL to draw it, because the other options were too slow. I have units on the map, represented by alphabetic letters, a la Dwarf Fortress. However, rendering text in OpenGL bites. I'm presently using a performance-tweaked mutant of Texture2D, which was good enough to protot...
Hello everyone, In Erica Sadun's Download Helper, link here, I can put these methods into my classes: - (void) didReceiveData: (NSData *) theData; - (void) didReceiveFilename: (NSString *) aName; - (void) dataDownloadFailed: (NSString *) reason; - (void) dataDownloadAtPercent: (NSNumber *) aPercent; these methods obviously refer back...
I am trying to send a small image along with some XML information to App Engine from my iPhone app. I am having trouble with the image somewhere along the path. There is no error given and data is being transfered into a Blob entry in Datastore Viewer but the blob files on App Engine do not appear in Blob Viewer. I have a suspicion t...
I have read and enjoyed the books: iPhone Programming: The Big Nerd Ranch Guide and Beginning iPhone 3 Development: Exploring the iPhone SDK Which book would you recommend as the third iOS book? ...
I'm trying out FTGLES to dynamically display text in arbitrary fonts on OpenGL-ES on iOS (cf. my SO question here). That library seems to require direct access to the TTF file to use the font. Using kosher methods, can one directly access -- by path -- the system font files on iOS? I've RTFM'd and couldn't find anything. Barring that, d...
For an iOS application I'm making I need to show groups of elements grouped together according to their type, and different groups of types separated from each other in a nicely done layout. I thought of using an undirected graph, with the grouped nodes all pointing to each other in a sort of circular reference, and then each group as ...
I have two views, the parent view opens a pop over that has a child view. In child controller @property (nonatomic, assign) ParentController *parent; In parent controller ChildController *child = [[ChildController alloc] init]; child.parent = self; My question is in the dealloc method of the child controller, do you set self.parent = ...
I have a common application pattern: user enters data in the main view controller, then views it in a table in a modal view controller, where rows can be deleted or modified. I was following the general design strategy from the Stanford iPhone course, but somewhere things went off the rails and all I've been getting is SIGABRT's and exc...
I have an NSString with the value of http://digg.com/news/business/24hr How can I get everything before the 3rd level? http://digg.com/news/ ...
I have some (fairly large) UIButtons. Instead of text, I would like to draw some simple colored graphics inside them (lines, boxes). How can it be done without resorting to using prerendered images? ...
Hi guys I used the code to try set the label text but its not working. I though maybe I forgot to connect the outlet with the label, or i connected the wrong outlet but they were ok once I checked them. Made sure the xib was saved. .m @synthesize nameLabel; @synthesize infoLabel; -(void) updateUI { nameLabel.text = @"test1"; infoLabe...
Are there any known pitfalls to avoid when storing user passwords in the Keychain? I am planning to give users the ability to require a password in order to access my iPad app. I have basic read and write of a string to the Keychain working. I just want to make sure that I don't allow them to get into a scenario that they lock themselves...
Hello all, I'm creating a bookmarklet for my iPhone which will add a scrolling menu to the upper-left corner of the screen. The problem I've run into is that if I visit a site which can be zoomed in, when I zoom in my "floating" div becomes larger as I zoom in the page. Is there a way so that my div will be .2 inches wide (measurable wi...
Hi, I am trying to display a UIActionsheet in my application. It works perfectly in portrait mode but when I try to have it display in a landscape orientation it still slides in from the bottom. However it no longer uses buttons and displays with the picker control like it is in landscape mode. Its just in the wrong position. I don't...
Are there any stock images that come with the system that I can use to fill a UIImage? For example, if I want a picture of a folder, do I have to include the image with my app? Or is there a system wide folder image I can load/display. ...
If I use the audio decoding libraries included in iPhoneOS (ex. AVAudioPlayer). Do I still have to pay for a license from Thomson, or VIA Licensing to legally decode AAC or MP3 files in my app? ...
I am struggling to get my custom drawing code to render at the proper scale for all iOS devices, i.e., older iPhones, those with retina displays and the iPad. I have a subclass of UIView that has a custom class that displays a vector graphic. It has a scale property that I can set. I do the scaling in initWithCoder when the UIView loa...
The CSS for my webapp gets completely misaligned when the mobile device is rotated to landscape (target devices are iphone and android). I tried using the javascript solution explained here in order to get my app to switch between a portrait.css and a landscape.css file on orientation change, but that still didn't work. It even messed up...
I have a UIView with a bunch of subviews, all positioned using -layoutSubviews. When the view is resized, the relative positions all change. I'd like these re-calculations to happen during an animated resize (using +[UIView beginAnimations:] calls). This doesn't seem to be happening. Any ideas? ...
I am trying to run a method from my app delegate, that saves an object in other class as well as invalidates a timer. I have it set up so that when my app exits, it runs the method in my class and saves and stops the timer. In app delegate: - (void)applicationWillResignActive:(UIApplication *)application { // Save the mission bec...