Adding "category of interest" in the iPhone Map Kit
How can I add a category of interest to my iPhone app. Basically finding certain types of businesses around the users location. It is possible, but how? ...
iphone
Core Data Predicates with Subclassed NSManagedObjects
I have an AUDIO class. This audio has a SOUND_A subclass and a SOUND_B subclass. This is all done correctly and is working fine. I have another model, lets call it PLAYLIST_JOIN, and this can contain (in the real world) SOUND_A's and SOUND_B's, so we give it a relationship of AUDIO and PLAYLIST. This all works in the app. The proble...
How do you make a UIBarButtonItem animation flip?
In the iPod app on the iPhone there is a UIBarButtonItem in the upper right toolbar that flips between the song and track listings for the album. When you select the button, the button itself does a flip animation. Is there a way to do this with: CGContextRef context = UIGraphicsGetCurrentContext(); [UIView beginAnimations:nil contex...
renderInContext creating memory that is not promptly released
While debugging in instruments using 'ObjectAlloc' I'm noticing 7megs of memory being allocated for the renderInContext call, but it never is released. When I comment out the renderInContext call this doesn't happen, and future renderInContext calls does not continue to increase the memory allotment. UIGraphicsBeginImageContext(contentH...
How do you delete rows from UITableView?
This has been bugging me for hours now and i have not been able to figure it out. I am importing data into a tableview using core data and NSMutableArray. As shown below. CORE DATA ARRAY NSMutableArray *mutableFetchResults = [CoreDataHelper getObjectsFromContext:@"Spot" :@"Name" :YES :managedObjectContext]; self.entityArray = mutable...
Transfer Zip file from iPhone app
I have an iPhone app that creates a zip file. I need to provide an easy way to allow the user to transfer that zip file to their PC (not via any network connectivity, as this file could be rather large). Any suggestions? ...
Transparent UIView like photo gallery app in iphone
The default camera app has a photo gallery which has glossy and transparent look, especially the toolbar. One can see the image partially behind the toolbar. How is this achieved? Is it just by altering the opaque property of UIView? Any pointers are much appreciated. ...
optimizing iPhone OpenGL ES fill rate
I have an Open GL ES game on the iPhone. My framerate is pretty sucky, ~20fps. Using the Xcode OpenGL ES performance tool on an iPhone 3G, it shows: Renderer Utilization: 95% to 99% Tiler Utilization: ~27% I am drawing a lot of pretty large images with a lot of blending. If I reduce the number of images drawn, framerates go from ~20 ...
iPhone multi view/window switch
I've now put all night and tried to get my iPhone program to perform as intended, it has also succeed me sometimes but now I have pages with a problem I simplehen can not get resolved. 've tried this video guide that makes it I want it to but I stare my project up with NSObject (Windows Based) for my program. Has anyone any. can help m...
UITableView Header Selection
Hello, Can anyone explain me how can I detect a selection in a table view Header view like in tableView:didSelectRowAtIndexPath: ? It would be very useful for me. I've defined the header as UITableCellView so I could attach a UISwitch as an accessory view, and it worked great but now I can't detect the changes made in the switch. Any su...
How to fetch distinct values in Core Data?
So in looking through Core Data Snippets, I found the following code: ... [request setEntity:entity]; [request setResultType:NSDictionaryResultType]; [request setReturnsDistinctValues:YES]; [request setPropertiesToFetch:[NSArray arrayWithObject:@"<#Attribute name#>"]]; // Execute the fetch NSError *error; id requestedValue = nil; // W...
Cumulative Normal Distribution function in objective C
Anyone know of a good implementation of this whose license is compatible with non-free iPhone apps? As suggested in this question, Boost looks absolutely wonderful. But as best I can tell, it is only available in C++. http://stackoverflow.com/questions/2328258/cumulative-normal-distribution-function-in-c ...
iPhone Advanced table view cells example
I have been going through and re-creating Apple's "Advanced Table View Cells" example to better understand everything. I have done everything, but somehow missed one detail and I can't figure it out. If you launch their example (http://developer.apple.com/iphone/library/samplecode/AdvancedTableViewCells/Introduction/Intro.html) and ope...
How do you adjust the frame or vertical alignment of a UIBarButtonItem contained by a UIToolbar instance?
Horizontal positioning of UIBarButtonItems is no problem, I can simply pad the space with fixed/flexible space items. However, I can't seem to adjust the toolbar item vertically. UIToolbar has no alignment property, and UIBarButtonItem has no way of setting its frame. I need to do this because we're using a mix of custom icons created ...
iphone - Images (slide show) and audio snychronization
I have 20 images and some audio. I would like to show a single image at a time and change the images at (unequal) intervals. For example, I want to show image 1 for 1.44 seconds and image 2 for 1.67 seconds and so on. Can someone suggest how to go about doing this please? What I have seen are examples that show how to setup an array ...
viewWithTag and retreiving views deep within the heirarchy
if i have the following view heirarchy UIView --- top level view --UIButton --UIView ----UILabel ----UILabel -- tag = 1 how do I get UILabel with tag 1 from a reference from the top level view? ...
Unable to find or obtain a context for request certificate
I am trying to send push notification to iphone. By searching on internet i found that register the P12 file on server with winhttpcertcfg. But when I tried with this command winhttpcertcfg -g -c LOCAL_MACHINE\MY -s "CertificateName" -a "ASPNET" on command window after installing winhttpcertcfg. But I am getting the error "Unable to f...
iPhone OS: Posting an image + text "story" to a user's news feed through the facebook api
So what I am trying to do is post an image that has been created by a user on an iphone into that users newsfeed. The functionality I am having a hard time understanding if it is possible: Can I pass a local NSURL (or URL?)(to a png file that lives in the documents folder) through a JSON string and onto Facebook? i want to mimic the...
How to use Hessian in iphone?
Hello, Is there any one who can help me to understand how we can implement Hessian protocol in iPhone. I have Hessian kit, but its not that straightforward as I thought. Please help me, either by Hello World example or some link which explain Hessian implementation. Thanks ...
Internationalization of an iPhone app
I have an application that has lessons on British accent. This is for people who already know how to read and speak English. Is there a need to internationalize this app? ...