cocoa-touch

UITableView section index overlaps search bar

Hi: I want to display a section index in an UITableView with a search bar in the table view header (not section header). But the index strip is now overlapping the search bar. Is there an elegant solution to avoid this and let the index start below the table header? ...

What's a better way to display a handle for resizing a view on iPhone / iPad?

I want to display a handle at the corners of a UIView that can be used to resize the view. How can I display the handles floating on the top of everything else and still have a connection to and be in sync with a view? The solution I implemented before looks like this: I put the view into another view that shows the handles on top of...

iphone,cocoa, how do you think on KVC and KVO in cocoa ?

if your app use this solution , do do you plan port the app to other platform ? for example, iPhone app --> Android or Backberry. I do not want user it , but some code is exist ... ...

remove image from tableViewCell created programatically

Hello, I would like to move an imageView contained on a cell and it works but creating a new image at new position keeping old image (then two are shown). How could I remove old one?? used code: UIImage *cellImage = [UIImage imageNamed:(@"%@", showIconName)]; UIImageView *imageViewToPutInCell = [[UIImageView alloc] initWithImage:cellIma...

addSubview like modal

How can I get a UIView to transition via addSubview like the presentModalViewController does? The available animations don't seem to do this. I would use the modal but I have a navigation bar at the top and don't want to disable it. Also, the modal overlays on the navigation bar. If there is a way to have it so the modal doesn't disa...

Update UIViewTableCell's background when accessory URL is clicked

In the tableView:accessoryButtonTappedForRowWithIndexPath: selector, I want to update the backgroundColor of the cell. I can get the UIViewTableCell using cellForRowAtIndexPath: but I'm not sure how I can update its background color. The code beliw doesn't seem to work. [_tableView beginUpdates]; cell.backgroundColor = [UIColor...

How do I remove the alert: "...may not respond to..."

In my .m file I call a method that is inside the same .m file. In the header I have the correct import for the header but I keep getting this alert: What am I doing wrong? What should I do in order to make this error disappear? I'm kinda lost here :-( Even if I changed this to: NSString *path = [[NSString alloc] initWithString:...

Does the iPhone 3G/3Gs camera put metadata in its images? (and how do you get it?)

I've been trying to figure how whether the iPhone (either 3G or 3Gs) camera puts metadata into it's images. Anecdotally, it appears that it does (e.g., I've seen images posted on the web that included a bunch of metadata), but I can't find reference to it anywhere in the SDK documentation. So....does anyone have a definitive answer? A...

UIViewController dismissModalViewControllerAnimated: causes main window to disappear

I want to present a modal mail dialogue like so in the iPad app: MFMailComposeViewController* picker = [[MFMailComposeViewController alloc] init]; picker.mailComposeDelegate = self; [picker setSubject:title]; [picker setMessageBody:[NSString stringWithFormat:[self emailBody], title, [link absoluteString]] isHTML:YES]; [self.vi...

view update problem on transition

Hello, when flip from one view to a new one, I get refreshing problem. New view contains a navigationItem with two buttons, one right, one left and when transition starts, I see buttons on opposite sides and not correctly positioned until the transition ends. Then view is showed correctly according to xib file. How to solve it?? ...

UiDatePicker displays but not UIPickerView

If I drop a UIDatePicker onto a UIView in IB and run the app, the date picker displays. If I delete the date picker, drop a UIPickerView onto the same UIView and run the app, the UIPickerView doesn't display. What is the difference? ...

For iphone dev, do you need to learn cocoa touch?

For iphone dev, do you need cocoa touch skills or just objective c? ...

Problem with Rotating a UIScrollview

Hey guys, I am having issues trying to get the pageControl sample code to work with rotation. I managed to get it to rotate but it does not visually load correctly until I start to scroll (then it works fine). Any Idea on how I can fix this problem? Here is a link to the project if you want to see it in action. This code is base...

Pre-crash iphone symptoms - odd user position, volume change

I'm seeing intermittent strange symptoms in my app: Blue blob (user position in MKMapView) starts "exploding" (odd, jerky animation). Can begin at startup and seems to indicate eventual problems. Speaker volume suddenly increases (back to level before I invoked kAudioSessionSetProperty_OtherMixableAudioShouldDuck). The app keeps runn...

Render data offscreen in UIView

How would I go about drawing a view offscreen in order to perform some calculation before the view's draw is actually done? Can this be done by drawing to a temporary layer? ...

Framework for iPhone wait screens

I ran across a small framework some time back that someone put together for iPhone wait screens. But now I can't find any trace of it. Does anyone have a link to it? It may not be a framework as much as a few code snippets. But the guy had it all pre-made. You just needed to implement and specify the type of wait screen you wanted. ...

Can an app access contact list

Can an app access the contact list? If yes what class do I use? If not, would 4.0 allow that? ...

question about CGAffineTransformTranslate

CGRect rect1 = backgroundImageView.frame; NSLog(@"%f,%f,%f,%f",rect1.origin.x,rect1.origin.y, rect1.size.width,rect1.size.height); angle = -90.0; moveX = 0; moveY = 0.0; CGFloat degreesToRadians = M_PI * angle / 180.0; CGAffineTransform landscapeTransform = CGAffineTransformMakeRotation(degreesToRadians); lan...

How to get local time zone programmatically with cocoa-touch in iphone

The time of iphone isn't of local time zone when i travel to foreign. How to get local time zone programmatically with cocoa-touch in iphone? ...

AVAudioPlayer only initializes with some files

Hi everyone, I'm having trouble playing some files with AVAudioPlayer. When I try to play a certain m4a, it works fine. It also works with an mp3 that I try. However it fails on one particular mp3 every time (15 Step, by Radiohead), regardless of the order in which I try to play them. The audio just does not play, though the view loadin...