cocoa-touch

iPad UIColor Saturation Issues

I am trying to draw a UIColor on the screen of a view-based app, and I am trying to do so using HSB. It is absolutely necessary for me to use HSB in this case. I can create a UIColor object with any S value from 0.0f to 0.75f, but past that the numerical changes have no effect on the actual saturation displayed. I need it to be 1.0f, but...

Need some information about using cocos2d in iPad.

Hi, I need some information about using cocos2d in iPad. Can we use 2048x2048 sprite sheets ? I read in this form that we can use but with limitation not more than 3 or 4 sprite sheets. But, I have 10 animations in my game. maximum of 4 animations run at a time. Can we use the CCDirectors in AppDelegate in the same way as we use i...

How can I capture the amount of surface area that the user is making contact with the iPhone screen?

Is there a way to capture the amount of screen that is making contact with the users? I assume there is since this finger painting app shows the ipad responding to only the pixels that the user makes contact with. Thanks so much in advance for your help! ...

SImple links between UI objects in cocoa

I simply want to link a label to a slider in order for it to display the current value of that slider. This is my first time working with objective-c, and the problem seems far more complicated than in Java or C#. Help would be appreciated. ...

I cannot get the value of a table view cell in cocoa touch

I am trying to get the value of a cell in a table view but it won't let me. If someone could help that would be great. int numberOfChecks = -1; numberOfChecks = numberOfChecks +1; if ([objectsForTable count]-1 >= numberOfChecks) { UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:numberOfChecks]; NSS...

How to do iPad Photos app pinch to expand

I don't think this has been asked before on this site, but I might be wrong. Does anyone know the basics of how to get that whole effect with the iPad Photos app? Basically, pinching a stack of photos lets you have a "peek" at the photos in that stack, which expands based on the distance between your 2 fingers in the pinch, then fully c...

CGContext rotation

I have a 100x100 pixel image that I want to draw at various angles rotated around the center of the image. The following code works, but rotates around the original origo of the coordinate system (upper left hand corner) and not the translated location. Thus the image is not rotated around itself but around the upper left corner of the s...

audioPlayerDidFinishPlaying not being called during scrolling UITableView

One of my views is a UITableView which acts as the delegate for an AVAudioPlayer and this table essentially plays sounds when you select a certain row with options to repeat the sound after its finished playing. However, I noticed that if I select a cell with repeat ON for a certain sound and then scroll through the UITableView to sel...

scrollViewDidEndScrollingAnimation

When scrollViewDidEndScrollingAnimation is being called and in which cases would I need to use it? ...

Cocoa touch: decorating text

I've added a UIAppFont to my plist, and, happily, am able to write a custom font to my display. Now, if I had to display this custom font in a very large size with a yellow outline and purple in the middle- how in the world would I achieve that?? ...

Can NSUserDefaults be used for pausing the application during a phone call ?

Friends, currently I dont have iphone to test and using Simulator for testing purposes. I am Just curious to know whether an application continues to run even after a phone call.. here i have no option to test this from simulator. If it terminates then how can i pause things.. and continue after a phone call. Is NSUserDefaults can be us...

iPhone: Which are the most useful techniques for faster Bluetooth?

Hi. I'm adding peer-to-peer bluetooth using GameKit to an iPhone shoot-em-up, so speed is vital. I'm sending about 40 messages a second each way, most of them with the faster GKSendDataUnreliable, all serializing with NSCoding. In testing between a 3G and 3GS, this is slowing the 3G down a lot more than I'd like. I'm wondering where I sh...

How to Get Search Bar in Tableview to Appear When User Taps Search Icon at the top of sectionIndex scroll bar?

I have a tableview with an indexed scrollbar on the right side that shows the letters A-Z and has a magnifying glass icon at the top ({search}). All of the letters in the scrollbar appropriately take the user to the corresponding section except for the magnifying glass, which takes the user to "A" and keeps the searchBar hidden. I just...

Reverse geocode street name and city as text

Hello, I have been having some trouble finding a good way to output just the street name and city as text (Infinite Loop, Cupertino shown here) that can be displayed in my iPhone app. This needs to be able to dynamically change as you change streets and city. I don't have the slightest idea of how to do this, I hope someone can help. I h...

How to fill a fillable pdf from cocoa touch?

I was wondering if anyone had seen an example of using cocoa touch to complete a fillable pdf form? So far I haven't found anything. ...

iPhone animation with stretchable image

I got a UIView subclass that draws a UIImage as its background. The image is created using the stretchableImageWithLeftCapWidth:topCapHeight: method, it has round edges. I also use an animation block inside of which I resize my view. I had hoped that during animation, the drawRect:method would get called sometimes, which would result in...

iPad: Split view Controller

I am creating split view based application for i pad. I have 1)root view controller 2)detail view controller It is like menu and submenu Here i am planning to do i would like to have navigation in root view controller. It is recomonded to use or not. If it is recomended how is it possible. ...

iPad Camera Connection kit?

Does anyone know if it is possible to access the iPad's camera connection kit? I would like to read the files off the connected mass storage device. Would this be possible or is this something that only Apple can do in there apps. Thanks ...

Replace an Array with an Array

I have and NSMutableArray and I want to replace it with another, but if I try to do it like this... firstArray = secondArray; ...then it seems to erase the entire firstArray and I get this error message.. Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[NSCFArray objectAtIndex:]: index (0) beyond bounds (0...

can a uiviewcontroller push a uitabbarcontroller?

if so, how do i setup my uitabbarcontroller in IB? all the examples ive seen create the uitabbarcontroller in the app delegate. ...