iphone

[objective C] IPhone question about UIImageView memory menagement

Hi, i have a UIImageView of 1024x768 (the room of my game) and other various UIIMageView on it (the object of my game). The iPhone screen is smaller than the room (UIImageView 1024x768) .. i want to understand if the iPhone's system automatically intercepts the graphic elements outside the visible area of Room (the player's view) and unl...

Three20 JSON problem: Can deploy to simulator but not device (extThree20JSON)

Everything builds and runs in the simulator fine ... but when I attempt to run on device I get: "arm-apple-darwin10-gcc-4.2.1: ..../three20/Build/Products/Debug-iphoneos/libextThree20JSON+YAJL.a: No such file or directory" I check that directory and indeed the file doesn't exist. It does exist in the "Debug-iphoneosimulator" t...

Big problems on iPhone ad hoc build -

No matter what I do I can't get my ad hoc provisioning profile to work. In Organizer, I always get "A valid signing identity matching this profile cannot be found in your keychain" for my adhoc profile. I have my distribution cert installed in my login keychain. I dragged the adhoc mobileprovision file to XCode... that's pretty much...

Quartz2d vector images vs OpenGL vector description?

How big of a difference is the description language of Quartz2d to OpenGL ES? It seems they are similar in description power... except that Quartz is mostly 2d and that OpenGL is out of the box 3d ( but can be made 2d focused ). Are the mappings from 2dQuartz to 2d OpenGL ES that different? Im sure there must be differences in some sp...

Horizontal UITableView

I want implement a layout in my ipad application that has a uitable view that scrolls left and right rather then up and down : So rather than row 1 row 2 row 3 ( scrolling vertically ) It would be : row 1, row2, row 3 (scrolling horizontally ) I've seen that UItableView is designed to only do vertical scrolling so doing a transfo...

Disabling home button on iPhone/iPad

First of all, I'm completely aware that doing this will get my app rejected by Apple, that it's a poor user experience, and so on. My question is fairly simple, is there a way using private APIs to disable the home button? The aim is to effectively put an iPad into kiosk mode. ...

iPhone OS: KVO: Why is my Observer only getting notified at applicationDidfinishLaunching

I am basically trying to implement an achievement tracking setup in my app. I have a managedObjectModel class called StatTracker to keep track of all sorts of stats and I want my Achievement tracking class to be notified when those stats change so I can check them against a value and see if the user has earned an achievement. I've tr...

help me pick the right iPhone audio class - MPMoviePlayer vs AVAudioPlayer vs MPMusicPlayer

Does anyone know of a good tutorial on the distinction between the MPMoviePlayer vs AVAudioPlayer vs MPMusicPlayer? I want to play audio from an mp3 file available at an external URL. Ideally it is played in an iPod-like audio view. I toyed with MPMoviePlayer but it appears to be more suitable for video, as when audio starts a "movi...

iphone app rejection question

My iPhone app was rejected with the following note: The following non-public APIs are included in your application: Spi Symbols __memset_chk __memmove_chk" These symbols appear in a small number of apparently cocos2d related object files: Grid.o Primitives.o TextureAtlas.o Curiously, this app had already been approved u...

Change color of group of MKPinAnnotationView

Hi, I have several annotation pins (aprox 700) in a MapView. Is there any way I can select from an UITableView a row and change the color of a group of pins? Lets say each row representing a group of pins.. Thank you in advance! ...

Address Book Framework and POP, IMAP, or ActiveSync Contacts

Can the ABPeoplePickerNavigationController be called to display Contacts from a different account than the default? For example, a gmail, or Exchange account? I've read the ABAddressBook documentation and all I find is code below to the default Address Book on the iphone. ABAddressBookRef addressBook = ABAddressBookCreate(); ...

Length of data returned from CGImageGetDataProvider is larger than expected

I'm loading a grayscale png image and I want to access the underlying pixel data. However after I load get the pixel data via CGImageGetDataProvider, the length of the data returned is longer than expected. CCGDataProviderRef provider = CGDataProviderCreateWithFilename(cStr); CGImageRef image = CGImageCreateWithPNGDataProvider(provide...

loading custom view using loadNibNamed showing memory leaks

I have a number of custom table cells and views that I built using interface builder In interface builder, everything is set up similarly. There is a table cell and a couple other UILabels and a background image Object owner if the nib is NSObject Class for the table cell is the name of the class for my table cell Here is how I creat...

Array of Arrays - writing to File problem

Hi, and again my array of arrays ... I try to improve my app performance by buffering arrays on file for later reuse. I have an NSMutableArray that contains about 30 NSMutableArrays with NSNumber, NSDate and NSString Objects. I try to write the file using this call: bool result = [myArray writeToFile:[fileMethods ...

App like default photo browser in iphone ?

Hi All i am developing a app which contains feature like default photo browser in iphone. I done some what similar to that. but after loading some(near about 10-15) images from remote server,i am receiving memory warning.My requirement is loading image one by one. For this, on scroll view i am putting an images and increasing the conte...

place UISegmentedControl in thenavigation bar of a View of a TabBarController(implemented through code)

How to place a uisegmentedcontrol in the navigation bar of a view of a tabbarcontroller which is implemented through code.. ...

How to change format of date/time?

I have this date and time format: 2010-05-19 07:53:30 and would like to change it to: Wednesday @ 7:53PM 5/19/2010 I'm doing this, which gets the current format: NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; formatter.dateFormat = @"yyyy-MM-dd HH:mm:ss"; but when I change the format, I end up with a null. For exa...

Streaming PDF documents to display on UIWebView

Hello All, I have a requirement, wherein I have to display a streamed PDF document on my app. I want to know if PDF streaming os possible on an iPhone app, and if it is possible, then how to go about it. thanks in advance. ...

iPad --- managedObject problem when [self.tableViewSection reloadData]

Hi , I am creating a news aggregator application that fetches a xml feed every 4 minutes. After the xml is loaded, I clear everything by deleting all the objects in the database, then save the new objects back into the database. I then call [self.tableViewSection reloadData]; to reload the tableView. Thats when I get a problem. As soon a...

Are you able to choose the starting tab for a TabBarController?

Just doing some programming for iPhone.. is there a method for this? ...