iphone

Passthrough tap from uitableview to superview

I have a UITableView which is a read-only, no-scrolling view. It's a subview of a view that manages taps. I'd like to pass through any tapping on the tableView to its superView. I've seen lots of examples of doing this, but nothing that seems to apply to the tableview. Any direction would be helpful. Thanks! ...

cocoa - referencing a method on the parent

I had a method on my main view controller named "calculateThis". This method was run, obviously, as int newValue = [self calculateThis:myVariable]; when I run it from inside the view controller. Then I created a static class and I need to run this method from there. How do I reference this method from that class using just relative...

How can two iPhone applications share the same settings?

Can two different iPhone applications share the same settings? I'm releasing two iPhone products, one that requires the user to login to use, the other that is free and can be used without a login. However, the second free application could have some enhancements that we could give if the user were logged in. Would it be possible to l...

CGContextDrawImage returning bad access

Hello guys, I've been trying to blend two UIImage for about 2 days now and I've been getting some BAD_ACCESS errors. First of all, I have two images that have the same orientation, basically I'm using the CoreGraphics to do the blending. One curious detail, everytime I modify the code, the first time I compile and run it on device, I g...

NSNotification race condition

Are there any race condition issues when using NSNotifications within a single thread? Here is a sample method: - (void) playerToggled: (NSNotification *) notification { if (timerPane.playing && ! timerPane.paused) { [playerPane toggleCurrentPlayer]; [timerPane toggleTimer]; [mainPane playerToggled]; } } The first two ca...

How to set the image into fit screen in the image view

Hi, I am new to iphone development. I want to display the actual size of the image in image view. I have created image view by using Interface builder and set the properties. Now the problem is, I have set into "Scale to Fill", then the image will be stretched in the full screen. Now i want to display the actual size of the image will be...

CoreData Relationships Synchronized with a Traditional Database

I have an existing database schema that is used in both an online (MySQL) and desktop (SQLLite) version of my product (data is synchronized between the two). I am now developing an iPhone version (CoreData) that I hope to synchronize with one or both of the existing products, but I am having trouble deciding how to manage entity relation...

How to make a class in one file work with UIWebViewController implemented in another file?

So I have a UIWebView implemented in one .m file and a UITableView implemented in another. When a user clicks UITableView element, the UIWebView appears. The problem is that I have to set UIWebView's content (local text and images) depending on the UITableView's row number. I know how to do this, but this, of course must be implemented w...

CALayer won't display

I'm trying to learn how to use CALayers for a project and am having trouble getting sublayers to display. I created a vanilla View-based iPhone app in XCode for these tests. The only real code is in the ViewController which sets up the layers and their delegates. There is a delegate, DelegateMainView, for the viewController's view lay...

iPhone payment portal development

A client has asked me about building an iphone app that can take restaurant orders. I have the resources to get this app done, but I had a few questions. *Will this app require a portion of the sale to go to apple (if so how much?) *Whats the best way to integrate a payment portal to this? *Will I have to/should I have someone author...

Can I center a UIToolbar item?

I am putting a label on a UIToolbar (per this tip: http://stackoverflow.com/questions/333441/adding-a-uilabel-to-a-uitoolbar). But the toolbar has a button on the left side, and so flexible spaces throw the label off the center, which is where I'd like it to be. Can I somehow center this toolbar item so that it remains centered in the t...

OpenGLES mix and match blending options complicated question

So I have a background line drawing, black and white. I want to be able to draw over this, keeping the black lines in there, and drawing only where it is white. I can do this by using glBlendFunc(GL_DST_COLOR, GL_ONE_MINUS_SRC_ALPHA); And the black stays black and white gets whatever color I want. However in the white areas, I want to...

how to run countdown with dates to count days in iphone sdk

hi i need to countdown dates not times how to run countdown with dates to count days in iphone sdk ...

how to create an iphone Application that uses its GPS system

Hi I am fairly new to iphone development. Right now, I am working on an iphone game that is being developed in cocos2d. But I want to create an iphone application that uses its GPS system. I searched a lot on net but didn't find much. I want to know about: What framework tou use like cocoa touch or cocos2d,etc? Any linksk that could ...

AudioOutputUnitStart takes time

Hello, I'm making an iPhone game application using Core Audio, Extended Audio File Services. It works OK, but when I first call AudioOutputUnitStart, it takes about 1-2 seconds. After the second call, no problem. For a game application, 1-2 seconds is very noticeable. (I tested this on iPhone simulator, and iPhone 3GS) Also, if I leav...

View controller/NIB architecture for non-navigation application with transitions?

I'm tinkering with an iPad app that (like many iPad apps) doesn't use the UINavigation root view control system, so I don't have natural ownership for each app "view". I essentially have two basic views: a document list view, and a document edit view. I'm playing with UIView animation for getting from a selected document to the edit vie...

Can't set text label in table view in Xcode for the iPhone

I have this code: tableList = [[NSMutableArray alloc] initWithObjects:@"First View",@"Second View",nil]; I have synthesized it and set the property, the problem is when I add this line under the configure the cell comment to set the text of each row, the app opens in the simulator but instantly closes: // Configure the cell. cel...

When and where should I add a view to a UITableView's footer?

I am populating a UITableViewController's UITableView through code only. At the bottom of the table I wish to position a button that scrolls into view as the user scrolls to the bottom of the table. When in the UITableViewController life cycle should I populate the table footer with a button? viewDidLoad? p.s. I wish to avoid using sec...

App crashes every second time a tableview row is selected in navigation controller setup

Disclaimer first: I'm pretty new to Objective-C and the retain model. I've been developing in a garbage collected .NET environment for the last five years, so I've been spoiled. I'm still learning. I'm having my iPhone app crash with EXC_BAD_ACCESS. It happens in a navigtation controller/tableview setup. When I select a row the first ti...

Subclassing NSObject, can it cause problems?

I have a very basic data class that is subclassed from NSObject. I declare a few strings, make sure they have properties (nonatomic, copy), and synthesize them. The only method I implemented was dealloc() which releases my strings. Can any memory problems arise from just this? Are there any other methods I need to implement? ...