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  • How do I draw the desktop on Mac OS X?

    - by Dominic Cooney
    I want to draw the desktop on Mac OS X (Snow Leopard). Specifically, I want to achieve the same effect as running: /System/Library/Frameworks/ScreenSaver.framework/Resources/ ScreenSaverEngine.app/Contents/MacOS/ScreenSaverEngine -background (If you’re not near your computer, this displays the screensaver where you would normally see your desktop background.) I know how to make a window without a border (by subclassing NSWindow and overriding initWithContentRect:styleMask:backing:defer: to set the window style to NSBorderlessWindowMask) and without a shadow (setHasShadow:NO.) I know that I can call setLevel:kCGDesktopWindowLevel or kCGDesktopIconWindowLevel to put my window below other windows (see question 418791.) However this isn’t exactly what I want, because a window at this level is still on top of the desktop icons. I want to be on top of the desktop background, but below the icons. My view is opaque. If there is a technique that clobbers the desktop background, that is OK.

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  • Switching textstorage of NSTextViews back and forth

    - by Jakob Dam Jensen
    I'm trying to make a feature in a product which gives the user the ability to split a textview into two. The way this is done is by removing the textview from it's superview, making a NSSplitView and adding the textview as well as a new NSTextView instance to this splitview. Lastly I make these two textviews share the same textstorage in order to make them share the same content. It works great. But the problem is when I want to make one of the two textviews change textstorage. The replaceTextStorage method in NSLayoutManager causes both NSTextView to change textStorage. The API documentation states: replaceTextStorage: All NSLayoutManager objects sharing the original NSTextStorage object then share the new one. This method makes all the adjustments necessary to keep these relationships intact, unlike setTextStorage:. So it makes sense that it would do this. But the question is how do I make it possible to have two (or more) textviews first share the same storage and after that having them using their own? I've tried replacing the layoutManager and even making new instances of NSTextViews but no luck... Any suggestions?

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  • Presenting UIModalViews in Landscap mode

    - by Dominik
    Hello, I'm trying to present some UIModalFormSheets in a my iPad application. It's working without any problems, except one thing: When I have my iPad in landscape mode my modal form sheet is moving to the center of the screen and THEN rotates into the appropiate angle. All I want is to present the modal form sheet in the right angle according to the view mode (portrait or landscape), BEFORE it is displayed, so that the user doesn't see this rotation. I have tried all the modes for modalTransitionStyle and modalPresentationStyle, but nothing seems to prevent the modal form sheet from rotating after it is displayed. This is what I'm doing: NewFavouriteSheet *newFavouriteSheet = [[NewFavouriteSheet alloc] initWithNibName:@"NewFavouriteSheet" bundle:nil]; newFavouriteSheet.modalPresentationStyle = UIModalPresentationFormSheet; [self presentModalViewController:newFavouriteSheet animated:NO]; Does anyone has a suggestion on how to show the modal view in a correct way? Thanks for help. Dominik

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  • Delegate methods of NSTextField using NSNotification

    - by hekevintran
    I have an NSTokenField in a window. I am using it to store tags related to a Core Data object. Right now I have it set up such that I can add tags to the objects, but I cannot delete them. I need a delegate method on the NSTokenField that can let me know when the user has moved the focus out of the NSTokenField. Since NSTokenField is a subclass of NSTextField I figured that I could use its delegate methods. It has two that I think could be useful: - (void)textDidChange:(NSNotification *)aNotification - (void)textDidEndEditing:(NSNotification *)aNotification I set my controller class as the delegate of my NSTokenField and put both of these methods into my controller class. I put a basic NSLog into each of them and neither is triggered when I interact with the NSTokenField. I am guessing it has something to do with NSNotification. How do I activate these methods?

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  • How to move a symlink to the trash?

    - by neoneye
    I don't see any options for the FSPathMoveObjectToTrashSync() function for not following links. Here is what I have tried Create a link and a file [ 21:32:41 /tmp ] $ touch my_file [ 21:32:45 /tmp ] $ ln -s my_file my_link [ 21:32:52 /tmp ] $ la total 8 drwxrwxrwt 12 root wheel 408 17 Maj 21:32 . drwxr-xr-x@ 6 root wheel 204 9 Sep 2009 .. -rw-r--r-- 1 neoneye wheel 0 17 Maj 21:32 my_file lrwxr-xr-x 1 neoneye wheel 7 17 Maj 21:32 my_link -> my_file Move the link to the trash OSStatus status = FSPathMoveObjectToTrashSync( "/tmp/my_link", NULL, kFSFileOperationDefaultOptions ); NSLog(@"status: %i", (int)status); Output is status: 0 However the file got removed and not the link [ 21:32:55 /tmp ] $ la total 8 drwxrwxrwt 11 root wheel 374 17 Maj 21:33 . drwxr-xr-x@ 6 root wheel 204 9 Sep 2009 .. lrwxr-xr-x 1 neoneye wheel 7 17 Maj 21:32 my_link -> my_file [ 21:33:05 /tmp ] $ How can I move move symlinks to the trash? The Solution.. thanks to Rob Napier NSString* path = @"/tmp/my_link"; OSStatus status = 0; FSRef ref; status = FSPathMakeRefWithOptions( (const UInt8 *)[path fileSystemRepresentation], kFSPathMakeRefDoNotFollowLeafSymlink, &ref, NULL ); NSAssert((status == 0), @"failed to make FSRef"); status = FSMoveObjectToTrashSync( &ref, NULL, kFSFileOperationDefaultOptions ); NSLog(@"status: %i", (int)status);

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  • CoreData: managedObjectContext not being created

    - by PruitIgoe
    I had to add core data to an existing project but I am having issues with the managedObjectContext... in prefix.pch I have this: #import <Availability.h> #ifndef __IPHONE_5_0 #warning "This project uses features only available in iOS SDK 5.0 and later." #endif #ifdef __OBJC__ #import <UIKit/UIKit.h> #import <Foundation/Foundation.h> #import <CoreData/CoreData.h> #endif ... in my appDelegate.h I have this: #import <UIKit/UIKit.h> #import "AppViewController.h" #import "DDLog.h" #import "DDASLLogger.h" #import "DDFileLogger.h" #import "DDTTYLogger.h" #import "KIP_LogManager.h" @interface AppDelegate : UIResponder <UIApplicationDelegate> { DDFileLogger* fileLogger; /*coredata*/ NSManagedObjectModel* managedObjectModel; NSManagedObjectContext* managedObjectContext; NSPersistentStoreCoordinator* persistentStoreCoordinator; } @property (strong, nonatomic) UIWindow *window; @property (strong, nonatomic) AppViewController* viewController; @property (readonly, strong, nonatomic) NSManagedObjectContext* managedObjectContext; @property (readonly, strong, nonatomic) NSManagedObjectModel* managedObjectModel; @property (readonly, strong, nonatomic) NSPersistentStoreCoordinator* persistentStoreCoordinator; - (void)setupLogging; - (NSString *)applicationDocumentsDirectory; in appDelegate.m this: @synthesize managedObjectContext = _managedObjectContext; @synthesize managedObjectModel = _managedObjectModel; @synthesize persistentStoreCoordinator = _persistentStoreCoordinator; ... - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { //establish lumberjack logging [self setupLogging]; DDLogVerbose(@"\n\n*********************\nNEW LOG SESSION\n**********************\n\n"); //set root view controller self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; self.viewController = [[AppViewController alloc] init]; self.window.rootViewController = self.viewController; self.viewController.managedObjectContext = _managedObjectContext; return YES; } ... #pragma mark - CoreData Stack - (NSManagedObjectContext *)managedObjectContext { if (_managedObjectContext != nil) { return _managedObjectContext; } NSPersistentStoreCoordinator *coordinator = [self persistentStoreCoordinator]; if (coordinator != nil) { _managedObjectContext = [[NSManagedObjectContext alloc] init]; [_managedObjectContext setPersistentStoreCoordinator:coordinator]; } return _managedObjectContext; } // Returns the managed object model for the application. // If the model doesn't already exist, it is created from the application's model. - (NSManagedObjectModel *)managedObjectModel { if (_managedObjectModel != nil) { return _managedObjectModel; } NSURL *modelURL = [[NSBundle mainBundle] URLForResource:@"SPI_PAC" withExtension:@"momd"]; _managedObjectModel = [[NSManagedObjectModel alloc] initWithContentsOfURL:modelURL]; return _managedObjectModel; } - (NSPersistentStoreCoordinator *)persistentStoreCoordinator { if (persistentStoreCoordinator != nil) { return persistentStoreCoordinator; } NSMutableString* strDocsDirector = [[NSMutableString alloc] initWithString:[self applicationDocumentsDirectory]]; [strDocsDirector appendString:@"/SPI_PAC.sqlite"]; NSURL* storeURL = [NSURL URLWithString:strDocsDirector]; NSError *error = nil; persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]]; if(![persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:nil error:&error]) { /*Error for store creation should be handled in here*/ } return persistentStoreCoordinator; } - (NSString *)applicationDocumentsDirectory { return [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]; } in the view controller, viewDidLoad I am logging the passed managedObjectContext and am getting null returned. Obviously I am missing something but not sure what? In viewcontroller.h I have: @property (nonatomic, retain) NSManagedObjectModel* managedObjectModel; @property (nonatomic, retain) NSManagedObjectContext* managedObjectContext; @property (nonatomic, retain) NSPersistentStoreCoordinator* persistentStoreCoordinator; and in the viewcontroller.m: @synthesize managedObjectContext = managedObjectContext; ... DDLogVerbose(@"%@", managedObjectContext);

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  • Can I create a UITableViewController that inherits from a custom subclass of UIViewController?

    - by prendio2
    I have common functionality that I need to access from all screens of my app: a right bar button item and associated action. So as not to repeat the code I would like to set this up in a custom UIViewController and have all my view controllers inherit from it. - (void)viewDidLoad { UIBarButtonItem *rightBarButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemPlay target:self action:@selector(lightsCamera)]; self.navigationItem.rightBarButtonItem = rightBarButton; } - (void)lightsCamera { … } However, I have a number of UITableViewControllers however and I would like to know if it is possible for them to inherit the functionality too?

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  • Is NSDictionary key order guaranteed the same as initialized if it never changes?

    - by Thaurin
    I've run into the same problem as found in this question. However, I have a follow-up question. I seem to be in the same situation as the original asker: I have a plist with a hierarchy of dictionaries that define a configuration screen. These are not mutable and will stay the same throughout the application. Since the original discussion seems to focus on problems arising from mutating the dictionary, I must ask for comfirmation: is the order of a dictionary guaranteed the same as they are in the plist, i.e. as it is read (with initWithContentsOfFile)? Can I use allKeys on it in this case to get a correct-order array of keys if the dictionary never changes?

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  • Changing the language for NSLocalizedString() in run time

    - by user117758
    I have an iPhone application which has a button to change display language in run time. I have looked at NSLocalizedString() which will return the appropriate strings according to system preference. What are my options rather than hard coding all the display strings and return according to user language selection in run time? Any pointers will be much appreciated.

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  • How do I change the text size and component width of a UIPickerView?

    - by rksprst
    I have the following code to create a UIPickerView: pickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0.0f, 416.0f - height, 320.0f, height)]; pickerView.delegate = self; pickerView.showsSelectionIndicator = YES; [pickerView setSoundsEnabled:YES]; I would like to change the component widths and change the text size in each component. Is it possible to do this? Thanks!

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  • Need some information about using cocos2d in iPad.

    - by srikanth rongali
    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 in iPhone ? if( ! [CCDirector setDirectorType:CCDirectorTypeDisplayLink] ) [CCDirector setDirectorType:CCDirectorTypeDefault]; [[CCDirector sharedDirector] setPixelFormat:kPixelFormatRGBA8888]; [CCTexture2D setDefaultAlphaPixelFormat:kTexture2DPixelFormat_RGBA8888]; What can be the maximum size of the image that we can use? Any limitations regarding the cocos2d and iPad please post them. Thank you.

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  • Statusbar overlaps ViewController

    - by Stefan
    Hi, I in my AppDelegate, I use: ActivitiesViewController *acController = [[ActivitiesViewController alloc] initWithNibName:@"ActivitiesView" bundle:[NSBundle mainBundle]]; UINavigationController *acNavController = [[UINavigationController alloc] initWithRootViewController:acController]; [self.tabBarController setSelectedIndex:0]; [self.tabBarController setSelectedViewController:acNavController]; To switch the views in my TabBarController. The result is to close to the window top: How do I get my view to correct position? Regards

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  • iPhone SDK Nested For Loop performance

    - by Skeep
    Hi All, I have a NSArray of string id and a NSDictionary of NSDictionary objects. I am currently looping through the string id array to match the id value in the NSDictionary. There are around 200 NSDictionary objects and only 5 or so string ID. My current code is such: for (NSString *Str in aArr) { for (NSDictionary *a in apArr) { if ([a objectForKey:@"id"] == Str) { NSLog(@"Found!"); } } } The performance of the above code is really slow and I was wondering if there is a better way to do this?

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  • Validate a URL string in my iphone app

    - by Derek
    Hi, I am getting really frustrated and I cant seem to check if the user has entered a valid url or not. This is what I have tried: NSString *str = [NSString stringWithFormat:@"%@", [myurl.text stringByAddinPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; NSURL *aurl = [NSURL URLWithString:urlStr[; if(aurl == nil){ //Invalid url }

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  • Why aren't Admob click callback delegate methods getting called?

    - by executor21
    I'm integrating the latest version of the admob sdk (version 20100412) into my app. The ads get displayed, but I need the app to make some changes when an ad is clicked and admob displays a full-screen browser. However, none of the callback methods (willPresentFullScreenModal, didPresentFullScreenModal, willDismissFullScreenModal, and didDismissFullScreenModal) are called, even though other delegate methods are. Why aren't these callbacks being made? They were in the previous versions of the SDK, and the sample app doesn't use them, so it's no help. EDIT: removed the double negative from the question title

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  • UITouch Events and Table Views

    - by Andy
    I'm working on a navigation-based iPhone-only app that serves two main purposes: One, to present data in a hierarchical view, allowing users to drill down and eventually edit said data, and, two, to all users to perform a default action when the table view cell is tapped. I now need to offer a small set of options tied to the same data; however, both the didSelectRowAtIndexPath: and accessoryButtonTappedForRowAtIndexPath: methods are obviously taken. So, my options seem to be to implement a double-tap method, wherein the small list of additional options would be presented after (you guessed it) a double-tap on said table row; or, preferably, a tap-and-hold method. From what I can tell, tap-and-hold seems like the way to go in SDK 4.0 - which does me no good right this red-hot minute. I decided to go with the double-tap option, but I'm having a little trouble. First and foremost, the touchesBegan:withEvent: method does not seem to be getting called at all; a breakpoint placed within the method is never called while the application runs, and the table view responds exactly as it did before I inserted the method (which is to say, it performs the default action): - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *aTouch = [touches anyObject]; if (aTouch.tapCount == 2) { [NSObject cancelPreviousPerformRequestsWithTarget:self]; } } Second, I don't really need to handle a single-tap - the didSelectRowAtIndexPath: method can handle the single-tap just fine. The double-tap is the funky one I want to handle. I suspect the answer is going to contain the phrase, "You can't have the table view handle the single-tap and the touchesBegan: method handle the double-tap. The touch handling methods have to handle all of them." I would really appreciate some guidance from some of you who've dealt with this issue. Thanks in advance.

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  • NSFetchedResultsController doesn't fetch up the child-parent moc chain?

    - by Kronusdark
    I cannot find any clarification on this, so it may be a bug. Problem is, I have a series of parent-child Managed Object Context's. When I save on a child context the changes get pushed up to the parent, and I can fetch using a plain old NSFetchRequest. However, if I rely on an NSFetchedResultsController to pull these changes into a sibling context to the first, they do not see them. calling -(void)performFetch: error; doesn't seem to pull the changes either. After a restart of the app, all new data is available. My hypothesis is that NSFetchedResultsController only fetches from its current context and will not follow the chain to the persistent store. Can someone please set me straight here? Am I going to have to use notifications to monitor changes on other contexts? and finally, is this mentioned somewhere in the doc's? I cannot find it for the life of me.

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  • Core Data Null Relationship

    - by Dylan Copeland
    I have a to-one relationship in my data model with Core Data. I'm trying to set the value of the relationship but Core Data keeps thinking that it's nil. The "creatorUser" relationship is not optional, so when I go to save my managed object context, Core Data gives errors because it thinks the "creatorUser" is nil. Any help would be greatly advised. NSManagedObject *teamManagedObject = [NSEntityDescription insertNewObjectForEntityForName:@"DCTeam" inManagedObjectContext:_managedObjectContext]; // Creator Properties NSManagedObject *creator = [self userForID:[ticketInfo objectForKey:@"userid"]]; if (!creator) { creator = [NSEntityDescription insertNewObjectForEntityForName:@"DCUser" inManagedObjectContext:_managedObjectContext]; [creator setValue:[personInfo objectForKey:@"userid"] forKey:@"userid"]; [creator setValue:[personInfo objectForKey:@"creatorName"] forKey:@"name"]; } [teamManagedObject setValue:creator forKey:@"creatorUser"];

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  • Retrieving NSDate from NSString

    - by Olivier de Jonge
    I have an iPhone app. that is receiving data with IRFC 3339 timestamp format (e.g. @"2010-01-29T11:30:00.000+01:00"), as in GData. I want to convert the data to an NSDate NSDateFormatter *inputFormatter = [[[NSDateFormatter alloc] init] autorelease]; [inputFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss.SSS"]; [currentEntry setStartTime:[inputFormatter dateFromString: ][currentEntry startTimeString]]]; But I'm missing out how to convert the last part of the string @"2010-01-29T11:30:00.000+01:00": the time offset. Anyone knows what I have to add to this String to take the time offset in account too?

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  • Resize image with blue dots like in copy/Paste Function?

    - by Dominik
    Hello, I want to add a resize function to my app which works like the integrated copy feature on the iPhone. When the user opens the view he should see the image with the four blue dots which enable him to resize it. Is there an available example for this? Or has anyone the keywords for this functionality, which i can use for my further Search? Thanks for all tips and hints

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