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  • Unable to open executable - xcode

    - by Filipe Mota
    I'm getting this error...any idea how to solve it? GenerateDSYMFile /Users/fmota/Library/Developer/Xcode/DerivedData/PBTest-gvudadeakgzklbekugyiqyfyprlt/Build/Products/Debug-iphonesimulator/PBTest.app.dSYM /Users/fmota/Library/Developer/Xcode/DerivedData/PBTest-gvudadeakgzklbekugyiqyfyprlt/Build/Products/Debug-iphonesimulator/PBTest.app/PBTest cd /Users/fmota/Documents/Developer/Protobuf/PBTest setenv PATH "/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /Developer/usr/bin/dsymutil /Users/fmota/Library/Developer/Xcode/DerivedData/PBTest-gvudadeakgzklbekugyiqyfyprlt/Build/Products/Debug-iphonesimulator/PBTest.app/PBTest -o /Users/fmota/Library/Developer/Xcode/DerivedData/PBTest-gvudadeakgzklbekugyiqyfyprlt/Build/Products/Debug-iphonesimulator/PBTest.app.dSYM error: unable to open executable '/Users/fmota/Library/Developer/Xcode/DerivedData/PBTest-gvudadeakgzklbekugyiqyfyprlt/Build/Products/Debug-iphonesimulator/PBTest.app/PBTest'

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  • want to go to next view from rightbarbutton item.

    - by uttam
    I am using this code to get the three button on the right side of the navigationbar ,button are visible but next to this I want to go to the next view from this three button image, text ,vedio. NSArray *segmentTextContent = [NSArray arrayWithObjects:@"Image",@"Text",@"Video",nil]; UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:segmentTextContent]; segmentedControl.frame = CGRectMake(13, 20, 150, kCustomButtonHeight); segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar; segmentedControl.momentary = YES; defaultTintColor = [segmentedControl.tintColor retain]; // keep track of this for later UIBarButtonItem *segmentBarItem = [[UIBarButtonItem alloc] initWithCustomView:segmentedControl]; self.navigationItem.rightBarButtonItem = segmentBarItem; if(segmentedControl.selectedSegmentIndex=0) { [segmentedControl addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged]; } else if(segmentedControl.selectedSegmentIndex==1) { [segmentedControl addTarget:self action:@selector(segmentAction1:) forControlEvents:UIControlEventValueChanged]; } else if(segmentedControl.selectedSegmentIndex==2) { [segmentedControl addTarget:self action:@selector(segmentAction2:) forControlEvents:UIControlEventValueChanged]; } [segmentBarItem release]; //[modalBarButtonItem release]; } return self; }

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  • How do you check to see if a variable has changed every second or less in objective c?

    - by James
    I am using an if statement to check the value of a BOOLEAN when i click on a button. When the button is clicked if the value is false i want to display a UIActivityIndicator and if the value is true i want to push the new view. I can do this fine but i want the view to change automatically when the BOOLEAN Becomes true if the user has already clicked the button. So my question is how do you check to see if a value has changed everysecond or less?

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  • in playgame button Game Get freezed

    - by bmindhacker
    Hey guys i have done a game in cocos2d.And now i am stuck .i have a menu scene and a game scene. In menu scene i have a button named "Play Game". when i press this button game starts perfectly after game over i have a button named "Go back to main menu" that is used to take back to main menu scene now after game over when i click "PlayGame" button game does not perform any action and get freeze. please please help me guys i will be really thankful to you.

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  • Weird Perspective With CATransform3DMakeRotation

    - by kopproduction
    I'm having an odd problem with CATransform3DMakeRotation. When the rotated view is in the center of the superview, it looks like this: This is how it's supposed to look. However, when it's somewhere else in the superview, say, in the lower left corner, it looks like this: Note that it is tilted to the right. Same thing happens when it's in the lower right corner, only that it tilts to the left. Is there some way to make it tilt the way it should all the time and in every position?

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  • Expected specifier-qualifier-list before 'CGPoint'

    - by Rob
    My project compiles and runs fine unless I try to compile my Unit Test Bundle it bombs out on the following with an "Expected specifier-qualifier-list before 'CGPoint'" error on line 5: #import <Foundation/Foundation.h> #import "Force.h" @interface WorldObject : NSObject { CGPoint coordinates; float altitude; NSMutableDictionary *forces; } @property (nonatomic) CGPoint coordinates; @property (nonatomic) float altitude; @property (nonatomic,retain) NSMutableDictionary *forces; - (void)setObject:(id)anObject inForcesForKey:(id)aKey; - (void)removeObjectFromForcesForKey:(id)aKey; - (id)objectFromForcesForKey:(id)aKey; - (void)applyForces; @end I have made sure that my Unit Test Bundle is a target of my WorldObject.m and it's header is imported in my testing header: #define USE_APPLICATION_UNIT_TEST 1 #import <SenTestingKit/SenTestingKit.h> #import <UIKit/UIKit.h> #import "Force.h" #import "WorldObject.h" @interface LogicTests : SenTestCase { Force *myForce; WorldObject *myWorldObject; } @end

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  • Evaluating server certificate

    - by Raven
    Hi, How can I detect a self signed certificate from a revoked or expired ones? I'm using NSURLConnection and implementing connection:didReceiveAuthenticationChallenge: on delegate: - (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge{ if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]){ NSURLProtectionSpace *tmpSpace=[challenge protectionSpace]; SecTrustRef currentServerTrust=[tmpSpace serverTrust]; SecTrustResultType trustResult; OSStatus err = SecTrustEvaluate(currentServerTrust, &trustResult); BOOL trusted = (err == noErr) && ((trustResult == kSecTrustResultProceed) || (trustResult == kSecTrustResultUnspecified)); if (trusted){ // Do something } } } Currently the "if (trusted){}" block only work for certificates trusted by iOS, I want it to work for others as well, but only if the certificate isn't revoked or expired. The documentation is using SecTrustSettingsSetTrustSettings for changing the settings and reevaluate the trust. but I couldn't find this method (or the SecTrustSetting) for iOS, only for Mac. Thanks

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  • Scroll view to bottom while keyboard is hiding

    - by Manu
    Hi! I'm using a scroll view to move my view and show certain text fields (that otherwise would be hidden) when the keyboard shows. I basically resize the scroll view to make room for the keyboard, and then scroll up the view smoothly with "scrollRectToVisible", which works perfectly. After that, I can scroll and edit the rest of the text fields without lowering the keyboard, which is what I intend. The problem comes when I want to hide the keyboard again. I have been able to lower the keyboard and scroll down the view to its original position without a problem, but I have been unable to make that transition smooth. At the moment I use the following: - (void)keyboardWillHide: (NSNotification *)notif { CGRect topRect = CGRectMake(0, 0, 1, 1); [scrollview scrollRectToVisible:topRect animated:YES]; scrollview.frame = CGRectMake(0, 0, scrollviewWidth, scrollviewHeight); } I create a CGRect at the top, which I then move into view with "scrollRectToVisible". That works fine and commences the scrolling right when the keyboard is hiding (I use "keyboardWillHide" and not "keyboardDidHide" because the scroll view frame is still missing its lower part). The problem comes when I resize the scroll view frame back to its original dimensions (which I need to do), because then the scrolling is interrupted and the view drops to the bottom suddenly (as there is nothing else to scroll). This causes a glitch, which is why I cannot complete the transition smoothly. Any ideas on how could I lower the keyboard while scrolling the view down smoothly? Should I be scrolling up a bigger view, instead of resizing it? That way I would not have to restore the scroll view frame dimensions when lowering the keyboard, or would I? Thanks very much in advance!

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  • IOS SDK : first advices for beginners

    - by VdesmedT
    I too often answer the same kind of questions regarding basic topics like memory management, UITableView, Interface Orientation, MVC, etc... I understand very well that everyone starting with that SDK is too exited about getting its hand on it but a few reading would save them hours of debugging and the frustration that come along with the feeling that "We miss something here". I'd like experience users to share the few small articles, white papers, docs, book chapters that helps other save their time and avoid frustration. My first vote would be for : IOS Memory Management Guide View Controller Programming Guide Table View Guide And as a General recommendation, read the Overview section that come along with every class documention in the reference library, they contains most of what you need to know to avoid big traps !

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  • UISearchbar issue

    - by hmthur
    I am trying to add a UISearchbar to table header view. I have the icon in nib and have connected the outlets. Now in viewDidLoad, I am writing self.tableView.tableHeaderView = searchbar If i create a local var inside viewDidLoad, it shows up. But not the outlet or ivar one. But for some reason, the UISearchbar does not get displayed in the table. I am not sure what the issue is. Can a UISearchbar not be set in viewDidLoad OR is it something else? Please help.

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  • proper fill an image larger than screen

    - by madcat
    what I wanted to achieve here is simply fit the image width to the screen on both orientations and use UIScrollView to just allow scroll vertically to see the whole image. both viewController and view are created pragmatically. the image loaded is larger than screen on both width and height. here is the related code in my viewController: - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return YES; } - (void)loadView { UIScreen *screen = [UIScreen mainScreen]; CGRect rect = [screen applicationFrame]; self.view = [[UIView alloc] initWithFrame:rect]; self.view.contentMode = UIViewContentModeScaleAspectFill; self.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; UIImage *img=[[UIImage alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"image" ofType:@"png"]]; UIImageView *imgView =[[UIImageView alloc] initWithImage:img]; [img release]; imgView.contentMode = UIViewContentModeScaleAspectFill; imgView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; [self.view addSubview:imgView]; [imgView release]; } tried all combinations for both contentMode above, did not give me correct result. the most close I am getting now: I manually resize imgView in loadView, portrait mode would display correctly since app always starts with portrait mode, but in landscape mode, the width fits correctly, but image is centered vertically rather than top aligned. if I add the imgView to a scrollView, in landscape mode it looks like contentSize is not set to full image size. but when I scroll bounce I can see the image is there in full size. question: why I need to resize it manually? in landscape mode how and where I can 'move' the imgView, so imgView.frame.origin is (0,0) and works correctly with a scroll view? Thanks! UPDATE: I added: imgView.clipsToBounds = YES; and find out in landscape mode the image bounds is smaller than screen in height. so the question becomes how to have the image view keeps original ratio (thus shows the full image always) when rotated to landscape? do I need to manually resize it after rotation again?

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  • UTC-8 conversion

    - by leachianus
    Hey guys, I am grabbing a JSON array and storing it in a NSArray, however it includes JSON encoded UTF-8 strings, for example pass\u00e9 represents passé. I need a way of converting all of these different types of strings into the actual character. I have an entire NSArray to convert. Or I can convert it when it is being displayed, which ever is easiest. I found this chart http://tntluoma.com/sidebars/codes/ is there a convenience method for this or a library I can download? thanks, BTW, there is no way I can find to change the server so I can only fix it on my end...

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  • Print out the variable name objective-C

    - by vodkhang
    Continued from the last question here: Log method name in Obj-C . I just wondered if there is a way to print out the variable name as well. For example: NSString *name = "vodkhang"; NCLog(@"%@", name); and I hope that the output should be: name: vodkhang Just to summarize the previous post, currently, I can print out the class name, method name and the line number when I call NCLog(@"Hello World"); <ApplicationDelegate:applicationDidFinishLaunching:10>Hello world with #define NCLog(s, ...) NSLog(@"<%@:%d> %@", __FUNCTION__, __LINE__, [NSString stringWithFormat:(s), ##__VA_ARGS__])

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  • More 'Edit' navigation item

    - by lennox_19
    I am using a UITabBarController as well as a UINavigationController on my app. In my UITabBarController I am using more than 5 items so I automatically get the 'More' item. I've managed to add a saving procedure so the order of those items will be kept in case somebody changes the order etc. With 'More' active I get the More navigation controller with the 'Edit' item positioned under my UINavigationController. Both navigation controller are visible. When I click on 'Edit though the More navigation controller disappears and seem to be hiding under my UINavigationController and therefore I can't see/use the 'Done' function to save my new order What did I miss? Cheers

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  • Tracing memory leaks

    - by iFloh
    My favorite candidate again. I am in the process of identifying memory leaks in my app (a puzzling challenge for a newbe like me). I am using the xCode leak analyzer, but what puzzles me is how to trace back a memory leak to its variable or value. Is there a pointer to the instances that have reserved a memory address where a leak is identifyed? How do I best go about it?

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  • how to fetch & store any column from coredata to array

    - by user440485
    Hi All, I am working on page(Lesson) has button called "AddToFavorite". when i click on this button lessonID,lessonHeading is added in the Coredata. - (NSFetchedResultsController *)fetchedResultsController { // Set up the fetched results controller if needed. if (fetchedResultsController != nil) { return fetchedResultsController; } // Create the fetch request for the entity. NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; // Edit the entity name as appropriate. NSEntityDescription *entity = [NSEntityDescription entityForName:@"Favorites" inManagedObjectContext:managedObjectContext]; [fetchRequest setEntity:entity]; // Edit the sort key as appropriate. NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"lessonHeading" ascending:YES]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil]; [fetchRequest setSortDescriptors:sortDescriptors]; NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:managedObjectContext sectionNameKeyPath:@"lessonHeading" cacheName:@"Root"]; self.fetchedResultsController = aFetchedResultsController; self.fetchedResultsController.delegate = self; [aFetchedResultsController release]; [fetchRequest release]; [sortDescriptor release]; [sortDescriptors release]; return fetchedResultsController; } -(void)addToFavorites { UIAlertView *alert=[[UIAlertView alloc]initWithTitle:nil message:@"Lesson has been added successfully to your Favorite List" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; [alert release]; //Create a new managed object context for the new book -- set its persistent store coordinator to the same as that from the fetched results controller's context. NSManagedObjectContext *addingContext = [[NSManagedObjectContext alloc] init]; self.addingManagedObjectContext = addingContext; [addingManagedObjectContext setPersistentStoreCoordinator:[[fetchedResultsController managedObjectContext] persistentStoreCoordinator]]; Favorites *fav = [NSEntityDescription insertNewObjectForEntityForName:@"Favorites" inManagedObjectContext:addingContext]; fav.lessonID=[[data objectAtIndex:count]objectForKey:@"LessonID"]; fav.lessonTitle=[[data objectAtIndex:count]objectForKey:@"LessonTitle"]; [self didFinishWithSave:YES]; [addingContext release]; } My problem is that i want to show an alert if this lessonID is already existing in the coreData. show guide me how i can match the current page lessonID with the existing lessonID's in the CoreData. I am using CoreData 1st time.so sory for any mistake ...& thanks for ypur help frnds.

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  • Flexible Data source for Multi-Section Table View Controller

    - by TuanCM
    I have a TableViewController which display a list of NewsItem objects: @interface NewsItem : NSObject { NSString *feedID; NSString *title; NSDate *published; } I'm trying to implement a Table View Controller (multiple sections) that can display the list in two ways: One divide News Items into sections which based on Published Date The other would be based on FeedID (News source). And I don't know how to structure the data source so that the code is easy to maintain. I tried to put the list of News Items into a 2 dimension Array in this case is a NSMutableArray of NSArray objects. However I got some objc_exception_throw and I don't think this is flexible enough. Could you guys give me some ideas?

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  • How do I create an image for a UITableViewCell dynamically

    - by Xetius
    I want to dynamically create an image for a UITableViewCell which is basically a square with a number in it. The square has to be a colour (specified dynamically) and contains a number as text inside it. I have looked at the CGContextRef documentation, but can't seem to work out how to get the image to fill with a specified certain colour. This is what I have been trying so far. -(UIImage*)createCellImageWithCount:(NSInteger)cellCount AndColour:(UIColor*)cellColour { CGFloat height = IMAGE_HEIGHT; CGFloat width = IMAGE_WIDTH; UIImage* inputImage; UIGraphicsBeginImageContext(CGSizeMake(width, height)); CGContextRef context = UIGraphicsGetCurrentContext(); UIGraphicsPushContext(context); // drawing code goes here // But I have no idea what. UIGraphicsPopContext(); UIImage* outputImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return outImage; }

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  • How to remove back button action while page is loading.

    - by user133611
    Hi All In my project i have a list when select on a item it will take to next controller using PushViewController. When i go there i will get data using libxml parser. But when i am clicking on the back button while loading it is showing exception. So i want to disable back button action till loading of data is completed how can i handle it. Thank You

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