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  • textLabel.backgroundColor on UITableViewCell does not work

    - by Tom
    Hi! I'm trying to set the label backgroundColor of my UITableViewCells and it does absolutely nothing at all. I wonder if there's another way of doing this, so I'm asking! I tried this: cell.textLabel.backgroundColor = [UIColor redColor]; cell.backgroundColor = [UIColor redColor]; And it doesn't work, anything else? Thanks!

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  • Block declared variable visible outside?

    - by fuzzygoat
    If I declare a variable within a block (see below) is there a way to specify that its visible outside the block if need be? if(turbine_RPM > 0) { int intResult = [sensorNumber:1]; NSNumber *result = [NSNumber numberWithInt:intResult]; } return result; or is the way just to declare outside the block scope? NSNumber *result; if(turbine_RPM > 0) { int intResult = [sensorNumber:1]; result = [NSNumber numberWithInt:intResult]; } return result; many thanks gary

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  • Interface Builder caching bad data (voodoo)

    - by Ryan Townshend
    Sometimes IB will hold onto old or bad references, and I cannot seem to remove or edit them. EDIT I have made this a wiki question with the intention of gathering more data on the phenomenon. Answers involving situations where other coders have encountered this are welcome. This happened to me again last night with a table controller. When I created a spike project to try and reproduce the error, the system worked the way I anticipated. Then back in the actual project the bad behavior continued, even if I remove the xib file and all controllers involved. Creating a whole new project with none of the original (problematic) xib and nib files worked correctly. This question is not about the specifics of this incident but about this type of incident in IB. Does anyone know more about this type of bad IB behaviour, and possibly a more stylish way to to eliminate it than nuking the project? Note, removing the offending IB files and recreating them in the same project has not solved this for me in the past, only whole new projects. Answers regarding examples of when/how this glitch has been observed/created are welcome as well.

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  • Send in ObjC receive in DotNet data over internet?

    - by Kovu
    Hi, is it possible to send data in ObjC (strings, much strings), and receive them in DotNet C#? The background is I have an Iphone App from and to that I will send data and on the other side a dotnet application that will recieve and sent data. Has someone an howto / idea where to begin?

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  • Creating a Custom UIButton.

    - by Joshua
    I am looking to create a Custom UIButton (not subclass) progrmatically, I would like it to have a background image that will stretch as the UIButton's width increases. How would I do this?

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  • InApp Purchase supported content types

    - by Chandan Shetty SP
    In InApp purchase guide i saw these are the supported content types - Digital Books,Virtual poker chips current games, In-game tool or accessory, etc... And non-supported - Physical books, Virtual poker chips for other games, In-game credits for virtual goods, etc... I didn't understand "In-game credits for virtual goods" what is this? In my game i am using some credits to skip certain levels, if credits are not available user can buy credits through inApp purchase then he can skip level... Is it valid supported content type for In-App purchase?

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  • iPhone SDK: Orientation (Landscape and Portrait views)

    - by domness
    Okay, I've got my normal app which is in portrait mode. I can force my app to go to landscape mode for a view (using navigationcontroller and viewcontroller) like this: - (void)viewWillAppear:(BOOL)animated { [[UIDevice currentDevice] setOrientation:UIInterfaceOrientationLandscapeRight]; } But then when I go back to the main menu (tableview) it goes straight back to portrait. I try this code: - (void)viewWillAppear:(BOOL)animated { [[UIDevice currentDevice] setOrientation:UIInterfaceOrientationPortrait]; } But that doesn't work.. Any ideas?

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  • How to handle an array of pointers in Objective-C

    - by DougW
    I figured out the answer to this question, but I couldn't find the solution on here, so posting it for posterity. So, in Objective-C, how do you create an object out of a pointer in order to store it in objective-c collections (NSArray, NSDictionary, NSSet, etc) without reverting to regular C?

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  • Can't compile code when working with CALayer

    - by Sheehan Alam
    For some reason I get linker errors when I try and use CALayer: "_OBJC_CLASS_$_CALayer", referenced from: I have imported the following headers: #import <Foundation/Foundation.h> #import <UIKit/UIKit.h> #import <QuartzCore/QuartzCore.h> Code: arrowImage = [[CALayer alloc] init];

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  • Why does presentModalViewController not always work?

    - by E-Madd
    My application requires data from a server in order to run. The first thing it does is displays a view controller (LoadingViewController) that is responsible for checking if the data is saved to my PersistentStoreCoordinator. If the data isn't cached locally, it gets it from my server and caches it, and posts a notification that the LoadingViewController is listening for. When that notification comes through, LoadingViewController presents the application's MainViewController using the presentModalViewController with a flip animation. So far, so good... no errors. However, if the application loads and determines the data IS cached - the presentModalViewController does not work and the main application view never appears. No errors. I've even gone as far as adding a button to the Loading view that executes the same code when pressed and the damn thing works. I'm suspicious it has something to do with the timing of it all but I'm clueless as to what I can do to ensure the view is displayed with that flipping animation if the data is already cached locally. Any suggestions?

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  • How can I write a scrolling text in cocos2d ?

    - by srikanth rongali
    I have a text and it should be abled to scrolled only up and down to see entire text. and my application is a game and written in cocos2d. So, I have layers. There is also an image(CCSprite) adjacent to text. The text should be scrolled and the image have a touchesEnded: property. I used CCLabel for text and CCParallaxNode to add the text. But the text appears like a continues paragraph. But, my text should have different lines. My text is like this. //text starts Hey Player. Do you want to play the game right now then play. Do you want to practice or Play? what want to do? ...text continues //text ends What should I use for this ? Thank you.

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  • Animating removeFromSuperview

    - by brettr
    I'd like to animate the transition from a subview back to the super view. I display the subview using: [UIView beginAnimations:@"curlup" context:nil]; [UIView setAnimationDelegate:self]; [UIView setAnimationDuration:.5]; [UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.view cache:YES]; [self.view addSubview:self.mysubview.view]; [UIView commitAnimations]; The above works fine. It's going back to the super view that I don't get any animation: [UIView beginAnimations:@"curldown" context:nil]; [UIView setAnimationDelegate:self]; [UIView setAnimationDuration:.5]; [UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:self.view cache:YES]; [self.view removeFromSuperview]; [UIView commitAnimations]; Is there something different I should be doing to get the subview to animate when removed?

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  • should variable be released or not? iphone-sdk

    - by psebos
    Hi, In the following piece of code (from a book) data is an NSDictionary *data; defined in the header (no property). In the viewDidLoad of the controller the following occurs: - (void)viewDidLoad { [super viewDidLoad]; NSArray *keys = [NSArray arrayWithObjects:@"home", @"work", nil]; NSArray *homeDVDs = [NSArray arrayWithObjects:@"Thomas the Builder", nil]; NSArray *workDVDs = [NSArray arrayWithObjects:@"Intro to Blender", nil]; NSArray *values = [NSArray arrayWithObjects:homeDVDs, workDVDs, nil]; data = [[NSDictionary alloc] initWithObjects:values forKeys:keys]; } Since I am really new to objective-c can someone explain to me why I do not have to retain the variables keys,homeDVDs,workDVDs and values prior exiting the function? I would expect prior the data allocation something like: [keys retain]; [homeDVDs retain]; [workDVDs retain]; [values retain]; or not? Does InitWithObjects copies (recursively) all objects into a new table? Assuming we did not have the last line (data allocation) should we release all the NSArrays prior exiting the function (or we could safely assumed that all NSArrays will be autoreleased since there is no alloc for each one?) Thanks!!!!

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  • How can I change the animation style of a modal UIViewController?

    - by MrDatabase
    I'm currently displaying a UIViewController like this: [[self navigationController] presentModalViewController:modalViewController animated:YES]; and hiding it like this: [self.navigationController dismissModalViewControllerAnimated:YES]; The animation is "slide up from the bottom"... then slide back down. How can I change the animation style? Can I made it fade in/out? Cheers!

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  • Obj-C memory management: why doesn't this work?

    - by igul222
    Why doesn't the following code work? MyViewController *viewController = [[MyViewController alloc] init]; [myWindow addSubview:viewController.view]; [viewController release]; As I understand, myWindow should be retaining viewController.view for as long as the window needs it. So why does this cause my app to crash on launch? (commenting out the last line fixes the problem, as expected)

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  • Toubleshooting mapkit performance

    - by brettr
    I'm plotting over 500 points on a map using mapkit. Zooming is a little jittery compared to the native google map app. I've discovered what is causing the slowness. I'm adding custom annotations so that I can later add different pin colors and buttons for detail views: - (MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:(AddressNote *) annotation { MKPinAnnotationView *annView=[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"currentlocation"]; annView.pinColor = MKPinAnnotationColorGreen; annView.animatesDrop=TRUE; annView.canShowCallout = YES; annView.calloutOffset = CGPointMake(-5, 5); return annView; } If I comment out the above code, everything works fine. Very smooth with zooming in/out. Should I be adding annotations differently to boost performance?

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