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  • Nil string with [NSString stringWithFormat:] appears as "(null)"

    - by Supernico
    I have a 'Contact' class with two properties : firstName and lastName. When I want to display a contact's full name, here is what I do: NSString *fullName = [NSString stringWithFormat:@"%@ %@", contact.firstName, contact.lastName]; But when the firstName and/or lastName is set to nil, I get a "(null)" in the fullName string. To prevent it, here's what I do: NSString *first = contact.firstName; if(first == nil) first = @""; NSString *last = contact.lastName; if(last == nil) last = @""; NSString *fullName = [NSString stringWithFormat:@"%@ %@", first, last]; Does someone know a better/more concise way to do this?

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  • Customizing File Linkage for a Build Configuration (Not Buil Target)

    - by ZaBlanc
    I have a project that has several build configurations (FREE version, male-only, female-only, etc.). I am avoiding using multiple build targets because (A) the products are mostly all the same and (B) I don't want to have to do checkbox-management to keep every file I have included with all the targets. However, I have just a few files it would be nice NOT to include in certain builds. For example, I have male and female voice files, but I only want the male files in the male build and female voices in the female build. Question...is there a way to manage the build configuration to prevent these files from being included/linked in? What are my options?

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  • Method in RootViewController not Storing Array

    - by Antonio
    I have an array initialized in my RootViewController and a method that addsObjects to an array. I created a RootViewController object in my SecondViewController. The method runs (outputs a message) but it doesn't add anything to the array, and the array seems empty. Code is below, any suggestions? RootViewController.h #import "RootViewController.h" #import "SecondViewController.h" @implementation RootViewController - (void)viewDidLoad { [super viewDidLoad]; myArray2 = [[NSMutableArray alloc] init]; NSLog(@"View was loaded"); } -(void)addToArray2{ NSLog(@"Array triggered from SecondViewController"); [myArray2 addObject:@"Test"]; [self showArray2]; } -(void)showArray2{ NSLog(@"Array Count: %d", [myArray2 count]); } -(IBAction)switchViews{ SecondViewController *screen = [[SecondViewController alloc] initWithNibName:nil bundle:nil]; screen.modalTransitionStyle = UIModalTransitionStyleCoverVertical; [self presentModalViewController:screen animated:YES]; [screen release]; } SecondViewController.m #import "SecondViewController.h" #import "RootViewController.h" @implementation SecondViewController -(IBAction)addToArray{ RootViewController *object = [[RootViewController alloc] init]; [object addToArray2]; } -(IBAction)switchBack{ [self dismissModalViewControllerAnimated:YES]; } EDIT***** With Matt's code I got the following error: " expected specifier-qualifier-list before 'RootViewController' "

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  • i have project code in cocos and cocos2d and have problem in orientation

    - by Sukhi
    i have project code in cocos and cocos2d and have problem in orientation . my game is in landscape mode part of its code in cocos2d and another one is in cocos . cocos2d views orientations is working fine . i put this code in appdelegate.m file -(void)orientationChanged:(NSNotification *)notification { UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation]; if( orientation == UIInterfaceOrientationLandscapeLeft) { [[CCDirector sharedDirector] setDeviceOrientation: kCCDeviceOrientationLandscapeRight]; } else if( orientation == UIInterfaceOrientationLandscapeRight) { [[CCDirector sharedDirector] setDeviceOrientation: kCCDeviceOrientationLandscapeLeft]; } } but when i go to cocos code its view look good but as soon as i change the rotation LandscapeRight to LandscapeLeft my views goes in potrate mode i wrote following code in UIViewController (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Overriden to allow any orientation. BOOL orienationStatus=FALSE; if (interfaceOrientation ==UIInterfaceOrientationLandscapeLeft || interfaceOrientation==UIInterfaceOrientationLandscapeRight) { orienationStatus=TRUE; } return orienationStatus; } whats wrong in that i don't know .... help will be appreciated .....

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  • Can I access views when drawn in the drawRect method?

    - by GianPac
    When creating the content view of a tableViewCell, I used the drawInRect:withFont, drawAtPoint... and others, inside drawRect: since all I needed was to lay some text. Turns out, part of the text drawn need to be clickable URLs. So I decided to create a UIWebView and insert it into my drawRect. Everything seems to be laid out fine, the problem is that interaction with the UIWebView is not happening. I tried enabling the interaction, did not work. I want to know, since with drawRect: I am drawing to the current graphics context, there is anything I can do to have my subviews interact with the user? here is some of my code I use inside the UITableViewCell class. -(void) drawRect:(CGRect)rect{ NSString *comment = @"something"; [comment drawAtPoint:point forWidth:195 withFont:someFont lineBreakMode:UILineBreakModeMiddleTruncation]; NSString *anotherCommentWithURL = @"this comment has a URL http://twtr.us"; UIWebView *webView = [[UIWebView alloc] initWithFrame:someFrame]; webView.delegate = self; webView.text = anotherCommentWithURL; [self addSubView:webView]; [webView release]; } As I said, the view draws fine, but there is no interaction with the webView from the outside. the URL gets embedded into HTML and should be clickable. It is not. I got it working on another view, but on that one I lay the views. Any ideas?

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  • Get file property

    - by milanjansari
    Hello, How to get file size of pdf,gif,doc etc using xcode. suppose to i get pdf file form resorce folder so how can i get size of for this file. is there any way? Thanks you,

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  • Extract part of HTML in C/Objective-C

    - by Dan
    Hi, I need to extract the detail content of a website while preserve all formatting of the division. The section I wish to extract is: ... <div class="detailContent"><p> <P dir=ltr><STRONG>Hinweis</strong>: Auf ... </p> </div> ... My current solution is to use HTMLParser from libxml2 and xpath to find the nodes and walk through all the nodes to reconstruct this piece of HTML. This is a long an complicated code. I' just wondering if there is an easier solution to extract part of HTML? Thanks.

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  • How to animate a UIButton selected background Image

    - by Thomas Joos
    hi all, I have a class defining a custom UIButton. I configurate a normal and selected state like this: //custom image UIImage *image = [UIImage imageNamed:@"customIconCreationBG.png"]; UIImage *stretchImage = [image stretchableImageWithLeftCapWidth:0.0 topCapHeight:0.0]; [self setBackgroundImage:stretchImage forState:UIControlStateNormal]; UIImage *imageSelected = [UIImage imageNamed:@"customIconCreationBG_selected.png"]; UIImage *stretchImageSelected = [imageSelected stretchableImageWithLeftCapWidth:0.0 topCapHeight:0.0]; [self setBackgroundImage:stretchImageSelected forState:UIControlStateSelected]; In another class I'm filling an array with custom buttons and i'm adding a button pressed method. It sets the selected state to TRUE -(void)buttnPressed:(id)sender { NSLog(@"button pressed"); [[NSNotificationCenter defaultCenter] postNotificationName:@"unselectBGIcons" object:self]; HorizontalListIcon *pressedIcon = ((HorizontalListIcon *)sender); [pressedIcon setSelected:TRUE]; } The button switches to another background, which is great. Is there a way to animate this change ( fading in? ) because it's a bit hard now. Greets

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  • Manually Adjusting UI for Rotation

    - by Driss Zouak
    In my view I have some number-pad type buttons that I want to manually adjust their X and Y when the view is rotated. I'm having trouble figuring out how to support this. I have added in my ViewDidLoad NSNotificationCenter.DefaultCenter.AddObserver("UIDeviceOrientationDidChangeNotification", DeviceRotated ); And I defined my DeviceRotated but the breakpoint is never hit. I thought this might be because of the Autorotate, so I overrided the ShouldAutorotateToInterfaceOrientation and set that to false (true didn't work either). I figured there should be some WillRotate (but that's a void return type) or something that would allow me to indicate that I want the View to rotate, and whatever is set to auto adjust I'd like it to do that, but that I would like to be able to manually adjust any other items that I need. If I have to do everything myself, that's fine as well. Any advice would be appreciated, Driss.

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  • http authenitcation in xcode

    - by user313100
    I am trying to make twitter work in my app and everything works fine except the code does not seem to recognize an error from twitter. If the username/password are not valid, I get an error message through this function: - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { NSString* strData = [[[NSString alloc] initWithBytes:[data bytes] length:[data length] encoding:NSASCIIStringEncoding] autorelease]; NSLog(@"Received data: %@", strData ) ; return ; } It prints: Received data: Could not authenticate you. . However, the app continues to the post a tweet view I have and ignores the error. Obviously, I do not have something setup right to detect such an error from twitter so my question is how do I get xcode to recognize an error like this? This uses basic http auth btw and don't mention anything about OAuth...just trying to get this to work for now.

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  • UITableView Reusable cells

    - by Michael
    Can someone explain me the way reusable cells works for single table view? How many reusable cells a datasource should create? So far in all samples I've seen only one. Would one even need more?

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  • Issue with UIImage files not being found on phone

    - by Driss Zouak
    Note: Using Monotouch. I have a directory called Images where I have all my PNG files. In my code I have the following _imgMinusDark = UIImage.FromFile("images/MinusDark.png"); On the simulator it runs fine, on the phone it's null. I have the Images folder content (all the PNGs) in my MonoDevelop marked as Content in terms of Build Action. What am I missing? thanks

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  • Developer Deep Dive into Oracle WebLogic Server 12c (Dec. 1)

    - by oracletechnet
    It is not often that we are compelled to direct you toward a product launch event. But this one is special. On Dec. 1, Oracle will launch (via live Webcast) Oracle WebLogic Server 12c, a major update to that product. And this release, which includes Java EE 6 support, Active GridLink for Oracle RAC, and Oracle Virtual Assembly Builder, among other things, is specifically designed to improve the process of deploying apps to the cloud. Even better: the Dec. 1 Webcast includes an hour-long, developer-focused deep-dive session in which product experts will answer your questions via live chat. (Register for this session separately.) You don't want to miss this one, folks! 

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  • Why am I seeing an error about _OBJC_CLASS_$_CPGraphHostingView with Core Plot?

    - by user616281
    I downloaded the Core Plot example application, but when I compile it I saw a few errors. I then added the Core Plot SDK, but in this SDK there is no class named CPGraphHostingView. Therefore, I added the class manually from this link. However, I now see the following error: ERROR - "_OBJC_CLASS_$_CPGraphHostingView", referenced from: How can I work around this to get the sample application to compile?

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  • Using NSPredicate to filter on both Core attribute and entity

    - by Ben Thompson
    I have two entities in core data (call them entityOne and entityTwo). I have a entityOne<---entityTwo relationship between them. I am now trying to code an NSPredicate to fetch entityTwo objects on the following basis: Fetch entityTwo objects that have a relationship with a specified entityOne object. Filter out those entityTwo objects which have no value for one of their attributes. I am best doing both of these in an NSPredicate or is there a better way? I am trying the following: NSPredicate *predicate = [NSPredicate predicateWithFormat:@"(attribute <> "") AND (relationship == entityOne"]; [request setPredicate:predicate]; Any pointers on coding great fully received.

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  • How to get cell text based on indexPath?

    - by Sheehan Alam
    I have a UITabBarController with more than 5 UITabBarItems so the moreNavigationController is available. In my UITabBarController Delegate I do the following: - (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController { //do some stuff //... UITableView *moreView = (UITableView *)self.tabBarController.moreNavigationController.topViewController.view; moreView.delegate = self; } I want to implement a UITableViewDelegate so I can capture the row that was selected, set a custom view property and then push the view controller: - (void)tableView:(UITableView *)tblView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { //how can I get the text of the cell here? } I need to get the text of a cell when the user taps on a row. How can I accomplish this?

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  • When to release a class with delegates

    - by Stefan Mayr
    A quick question to delegates. Lets say, CLASSA has a delegate defined: @protocol MyDelegate -(void) didFinishUploading; @end In CLASSB I create an instance of CLASS A -(void) doPost { CLASSA *uploader = [[CLASSA alloc] init]; uploader.delegate = self; // this means CLASSB has to implement the delegate uploader.post; } and also in CLASSB: -(void)didFinishUploding { } So when do I have to release the uploader? Because when I release it in doPost, it is not valid anymore in didFinishUploading. Thanks

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  • Struggling with a loop

    - by Emil
    Hey. I am trying to make an integer match another integer by adding a number to one of them. I have tried several loop types, but none has worked. Take a look at the code: int favoriteLoop = [favoriteThing intValue]; if (favoriteLoop != [[[array objectAtIndex:favoriteLoop] description] intValue]){ NSLog(@"%d", [[[array objectAtIndex:favoriteLoop] description] intValue]); int favTemp = favoriteLoop; for (int x = favTemp; (favoriteLoop == [[[array objectAtIndex:favoriteLoop] description] intValue]); x++) { NSLog(@"Still not there.."); } } Could anyone help me clear up this mess? It just won't work! Could it have something to do with it allready being inside a for-loop?

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  • How do I change the UIView programmatically?

    - by user317834
    I have created View A and View B. My window has View A displayed on the screen. I also have a UIButton on View A. I want to switch from View A to View B when I click on the Button. I am not using any UIViewController. Is it possible to switch the views without using controller? I am calling buttonAction method on TOUCHUPINSIDE The problem is that it doesn't do anything when I say [ViewA removeFromSuperView]; What should I do now?

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  • Set a navigation controller without an app delegate

    - by Rodrigo
    I would like to show a Navigation Controller after clicking a button. Every tutorial assumes the navigation controller will be the first screen so it links it to the App Delegate, but App delegate only appears at MainWindow.xib. How do you guys add a navigation controller to a view different than the MainWindow? Thanks!

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