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  • GNUStep make with a precompiled (and prefixed) .pch header from Xcode project?

    - by d11wtq
    I'm trying to build an Xcode project with GNUStep-make. Right now the project is very small (3 classes) however it will grow to hundreds of classes over the coming weeks so I'm trying to get everything figured out and well-organised now. Xcode creates a ProjectName_Prefix.pch file which is a header that: a) get precompiled and b) is prefixed to every file in my project; at least if I understand correctly. Now, how do I tell GNUStep-make what to do with this file when it builds? I've added it to the XXX_PRECOMPILED_HEADERS variable. Cioccolata_OBJC_PRECOMPILED_HEADERS = Cioccolata_Prefix.pch With this in place the build fails with the error: Making all for framework Cioccolata... make[1]: *** No rule to make target `/Users/chris/Projects/Mac/Cioccolata/build/GNUStep/obj/PrecompiledHeaders/ObjC/Cioccolata_Prefix.pch', needed by `internal-precompile-headers'. Stop. make: *** [Cioccolata.all.framework.variables] Error 2 I've also got the following in my makefile: ADDITIONAL_OBJC_FLAGS += -include Cioccolata_Prefix.pch -Winvalid-pch I'm not sure what I've done wrong here. I basically have tried to follow the GNUStep documentation for precompiled headers. None of my project's source files expressly include the Foundation framework since this header does that.

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  • UICollectionViewController nested in a normal UIViewController

    - by patrickS
    I have added a UICollectionView into a normal ViewController (MainViewController), and than created a UICollectionViewController Subclass (CollectionViewController) in the ViewController and connected the UICollectionView outlet with the CollectionViewController object _collectionViewController = [[CollectionViewController alloc] initWithCollectionViewLayout:_collectionView.collectionViewLayout]; _collectionView.dataSource = _collectionViewController; _collectionView.delegate = _collectionViewController; In the CollectionViewController I have setup an simple NSArray object and I show this one. This works as expected. But If I try to access the collectionview from the CollectionViewController via self.collectionview I am not able to access this one. I dont know what I have to do, to also connect the collectionview. I have build a sample ios-app it is available at: https://github.com/patricks/uicollectionview-problem The method - (void)outputSelectedCell in the UICollectionViewController always shows, that there is nothing selected… I hope you understand the problem.

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  • How to access pixels of an NSBitmapImageRep?

    - by Paperflyer
    I have an NSBitmapImageRep that is created like this: NSBitmapImageRep *imageRep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:NULL pixelsWide:waveformSize.width pixelsHigh:waveformSize.height bitsPerSample:8 samplesPerPixel:4 hasAlpha:YES isPlanar:YES colorSpaceName:NSCalibratedRGBColorSpace bytesPerRow:0 bitsPerPixel:0]; Now I want to access the pixel data so I get a pointer to the pixel planes using unsigned char *bitmapData; [imageRep getBitmapDataPlanes:&bitmapData]; According to the Documentation this returns a C array of five character pointers. But how can it do that? since the type of the argument is unsigned char **, it can only return an array of chars, but not an array of char pointers. So, this leaves me wondering how to access the individual pixels. Do you have an idea how to do that? (I know there is the method – setColor:atX:y:, but it seems to be pretty slow if invoked for every single pixel of a big bitmap.)

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  • Facebook Connect iPhone StreamDialog delegate dialogDidSucceed

    - by JohnPayne
    Hey. I use FBStreamDialog to let users publish on their news feed. [fbStreamDialog show]; makes the dialog view popup, the user can press cancel or submit that message. Now...my problem is that both buttons close the dialog view and call the delegate method dialogDidSucceed. How do I find out which button was pressed? Its very important for me to know, any useful advice would be reaally really nice! Thanks, John

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  • How to find the leaky faucet that loads into Malloc 32kb

    - by Rob
    I have been messing around with Leaks trying to find which function is not being deallocated (I am still new to this) and could really use some experienced insight. I have this bit of code that seems to be the culprit. Every time I press the button that calls this code, 32kb of memory is additionally allocated to memory and when the button is released that memory does not get deallocated. What I found was that everytime that AVAudioPlayer is called to play an m4a file, the final function to parse the m4a file is MP4BoxParser::Initialize() and this in turn allocates 32kb of memory through Cached_DataSource::ReadBytes My question is, how do I go about deallocating that after it is finished so that it doesn't keep allocating 32kb every time the button is pressed? Any help you could provide is greatly appreciated! - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { //stop playing theAudio.stop; // cancel any pending handleSingleTap messages [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(handleSingleTap) object:nil]; UITouch* touch = [[event allTouches] anyObject]; NSString* filename = [g_AppsList objectAtIndex: [touch view].tag]; NSString *path = [[NSBundle mainBundle] pathForResource: filename ofType:@"m4a"]; theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL]; theAudio.delegate = self; [theAudio prepareToPlay]; [theAudio setNumberOfLoops:-1]; [theAudio setVolume: g_Volume]; [theAudio play]; }

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  • Passcode functionality for iPhone app?

    - by David Liu
    I was thinking about putting in PIN number functionality within my iPhone app (various examples can be seen here http://forums.mint.com/showthread.php?t=5956 ), but I was kinda stumped how to go about it. Should I just go with a hidden textfield and simulate the inputs with images?

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  • NSFetchedResultsControllerDelegate in a second view controller (not firing?)

    - by MTBPatriot
    I am running into an issue similar to the one described here: http://stackoverflow.com/questions/1319940/nsfetchedresultscontrollerdelegate-not-firing (the delegate for my NSFetchedResultsControllerDelegate are not being called on my second view controller) I can't seem to get the proposed solutions to work. I have a main view that loads information from Core Data just fine, but when it pushes a separate controller (and passes the managed object to it), the delegate methods won't fire. I've read about 'mergeChangesFromContextDidSaveNotification' but I don't understand how to synchronize the two manage objects and/or get the delegate methods to be called. Any help would be greatly appreciated. Thank you, Mike

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  • How do I get a UIView to appear instantly?

    - by matsgrip
    I'm trying to create an activity indicator in iPhone app. The problem is that I cannot get it to appear before the actual task i want it to diplay during is already done. Is there something funky about the order in which the iPhone does stuff? Here is my problematic code (in my app delegate): -(BOOL)showProgressView: (NSString *) message { self.progress = [[UIView alloc] initWithFrame:window.frame]; UIImageView *img = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"squircle.png"]]; [img setAlpha:0.5]; [img setFrame:CGRectMake(94, 173, 133, 133)]; UIActivityIndicatorView *spinner = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(51.5, 51.5, 30, 30)]; spinner.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhiteLarge; [img addSubview:spinner]; [self.progress addSubview:img]; [spinner startAnimating]; [img release]; [spinner release]; [window addSubview:self.progress]; return YES; } I then call this code like this: if ([appDelegate showProgressView:@"Loading..:"]) { //My actual code loads data and stuff here but that is not important //drawCtrl is a UIViewController subclass that is instantiated here UINavigationController *navController = [appDelegate navigationController]; [navController pushViewController:drawCtrl animated:YES]; [drawCtrl release]; } The problem is that my activity indicator does not appear until the new view controller is pushed onto the navController's stack. Can I control this in some way? Thanks in advance! -Mats

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  • Can I use an NSDecimalNumber anywhere that an NSNumber is expected?

    - by Nick Forge
    NSDecimalNumber is a subclass of NSNumber, and from what I can tell, it implements all of the NSNumber methods as expected for an NSNumber instance. Given that, is it ok to give NSDecimalNumbers to any code that is expecting an NSNumber? The only possible issue might be code that checks that an argument is an instance of NSNumber, but since NSNumber is a class-cluster, code like this would have to check that the instance is a subclass of NSNumber, and NSDecimalNumber instances should pass the same tests.

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  • How do I integrate popToRootViewControllerAnimated with my tabs?

    - by Adam Storr
    Hello! I am trying to make one of my tab buttons go to the root using popToRootViewControllerAnimated. My question is: where do I put this code for it to work? I have my tabs created through Interface Builder... do they have to be hard coded for this to work? Here is the code that I'm looking to use: [self.navigationController popToRootViewControllerAnimated:YES]; New code in AppDelegate: - (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController { if (viewController = HomeViewController) { [HomeViewController popToRootViewControllerAnimated:NO]; } }

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  • Create a table of contents from a pdf file

    - by ryan
    I'm using quartz to display pdf content, and I need to create a table of contents to navigate through the pdf. From reading Apple's documentation I think I am supposed to use CGPDFDocumentGetCatalog, but I can't find any examples on how to use this anywhere. Any ideas?

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  • The 10.6.3 os x update broke simulated key-presses for Nestopia.

    - by Lou Z.
    The iPhone app that I released is a wireless game controller, it translates touches on the device into key-presses on the networked Mac. This allowed for playing emulator (e.g. Nestopia) games using the iPhone as a controller. Of course, the day that I released it coincided with an os x update. After installing this update, the simulated key-presses no longer work in Nestopia! The crazier thing is, when I go to 'File Open' within Nestopia, I can cycle through the file list by hitting the up-arrow on my iphone controller; i.e. the simulated key-presses work in menu items, but not in the game itself. The code that I use to simulate keys is below. Given the list of changes here, can anyone identify which change would cause this problem? Thanks!! #define UP false #define DOWN true -(void)sendKey:(CGKeyCode)keycode andKeyDirection:(BOOL)keydirection{ CGEventRef eventRef = CGEventCreateKeyboardEvent(NULL, keycode, keydirection); CGEventPost(kCGSessionEventTap, eventRef); CFRelease(eventRef); }

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  • Obj-C: ++variable is increasing by two instead of one

    - by Eli Garfinkel
    I am writing a program that asks users yes/no questions to help them decide how to vote in an election. I have a variable representing the question number called questionnumber. Each time I go through the switch-break loop, I add 1 to the questionnumber variable so that the next question will be displayed. This works fine for the first two questions. But then it skips the third question and moves on to the fourth. When I have more questions in the list, it skips every other question. Somewhere, for some reasons, the questionnumber variable is increasing when I don't want it to. Please look at the code below and tell me what I'm doing wrong. Thank you! Eli import "MainView.h" import @implementation MainView @synthesize Question; @synthesize mispar; int conservative = 0; int liberal = 0; int questionnumber = 1; (IBAction)agreebutton:(id)sender { ++liberal; } (IBAction)disagreebutton:(id)sender { ++conservative; } (IBAction)nextbutton:(id)sender { ++questionnumber; switch (questionnumber) { case 2: Question.text = @"Congress should pass a law that would ban Americans from earning more than one hundred million dollars in any given year."; break; case 3: Question.text = @"It is not fair to admit people to a university or employ them on the basis of merit alone. Factors such as race, gender, class, and sexual orientation must also be considered."; break; case 4: Question.text = @"There are two Americas - one for the rich and one for the poor."; break; case 5: Question.text = @"Top quality health care should be free for all."; break; default: break; } } @end

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  • OpenGL behaving strangely

    - by Mk12
    OpenGL is acting very strangely for some reason. In my subclass of NSOpenGLView, I have the following code in -prepareOpenGL: - (void)prepareOpenGL { GLfloat lightAmbient[] = { 0.5f, 0.5f, 0.5f, 1.0f }; GLfloat lightDiffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f }; GLfloat lightPosition[] = { 0.0f, 0.0f, 2.0f }; quality = 0; zCoord = -6; [self loadTextures]; glEnable(GL_LIGHTING); glEnable(GL_TEXTURE_2D); glShadeModel(GL_SMOOTH); glClearColor(0.2f, 0.2f, 0.2f, 0.0f); glClearDepth(1.0f); glEnable(GL_DEPTH_TEST); glDepthFunc(GL_LEQUAL); glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); glLightfv(GL_LIGHT1, GL_AMBIENT, lightAmbient); glLightfv(GL_LIGHT1, GL_DIFFUSE, lightDiffuse); glLightfv(GL_LIGHT1, GL_POSITION, lightPosition); glEnable(GL_LIGHT1); gameState = kGameStateRunning; int i = 0; // HERE ******** [NSTimer scheduledTimerWithTimeInterval:0.03f target:self selector:@selector(processKeys) userInfo:nil repeats:YES]; // Synchronize buffer swaps with vertical refresh rate GLint swapInt = 1; [[self openGLContext] setValues:&swapInt forParameter:NSOpenGLCPSwapInterval]; // Setup and start displayLink [self setupDisplayLink]; } I wanted to assign the timer that processes key input to an ivar so that I could invalidate it when the game is paused (and reinstantiate it on resume), however when I did that (as apposed to leaving it at [NSTimer scheduledTimer…), OpenGL doesn't display the cube I draw. When I take it away, it's fine. So i tried just adding a harmless statement, int i = 0; (maked // HERE *******), and that makes the lighting not work! When I take it away, everything is fine, but when I put it back, everything is dark. Can someone come up with a rational explanation for this? Thanks.

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  • GDB says that a KVO observer is registered even though it is not (or is it?).

    - by Paperflyer
    When my application is closed, the main controller class removes itself as Observer from the model and then releases the model. Like this: - (void)dealloc { [theModel removeObserver:self forKeyPath:@"myValue"]; [theModel release]; [super dealloc]; } And right after that, the debugger says: 2010-04-29 14:07:40.294 MyProgram[13678:a0f] An instance 0x116f2e880 of class TheModel was deallocated while key value observers were still registered with it. Observation info was leaked, and may even become mistakenly attached to some other object. Set a breakpoint on NSKVODeallocateBreak to stop here in the debugger. Here's the current observation info: <NSKeyValueObservationInfo 0x100288450> ( <NSKeyValueObservance 0x1002aca90: Observer: 0x116f40ec0, Key path: myValue, Options: <New: YES, Old: NO, Prior: NO> Context: 0x0, Property: 0x116f80430> ) where 0x116f2e880 is indeed the model and 0x116f40ec0 is indeed the controller. How can the controller still be an observer when it just removed itself as an observer?

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  • How to paint background of specific range of text in NSTextView

    - by Rui Pacheco
    Hi, This is not a specific bug, its more about not knowing how to do something. I've an NSTextView and I need to paint the background of specific ranges of text when the user clicks on a specific part of the text view. I've tried this but I just get erratic behaviour in the sense that sometimes text loses the foreground color or the background doesn't span the whole range: NSLayoutManager *layoutManager = [myTextView layoutManager]; [layoutManager removeTemporaryAttribute:NSBackgroundColorAttributeName forCharacterRange:range]; [[myTextView layoutManager] setTemporaryAttributes:attributes forCharacterRange:range]; For the sake of simplicity assume that range is always a valid string (it is in my testing environment).

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  • CATransitionFade not working on newly added subviews

    - by David Liu
    For some reason, fading in new buttons using CATransition isn't working for me when it's a newly added button. The fade animation, however, is working on existing subviews. Code: // Add new button. CATransition *animation = [CATransition animation]; [animation setDuration:0.5]; [animation setType:kCATransitionFade]; [[button layer] addAnimation:animation forKey:@"fadeIn"]; [self.view addSubview:button]; // Enable previous button (Enabling fades in different type of background) if(toolbar.buttons.count != 0){ UIButton * prevButton = [toolbar.buttons objectAtIndex:(toolbar.buttons.count - 1)]; prevButton.enabled = YES; [[prevButton layer] addAnimation:animation forKey:@"fadeIn"]; }

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  • iPhone Options for reading item from XML?

    - by fuzzygoat
    I am accessing this data from a web server using NSURL, what I am trying to decide is should I read this as XML or should I just use NSScanner and rip out the [data] bit I need. I have looked around the web for examples of extracting fields from XML on the iPhone but it all seems a bit overkill for what I need. Can anyone make any suggestions or point me in the right direction. In an ideal world I would really like to just specify [data] and get a string back "2046 3433 5674 3422 4456 8990 1200 5284" <!DOCTYPE tubinerotationdata> <turbine version="1.0"> <status version="1.0" result="200">OK</status> <data version="1.0"> 2046 3433 5674 3422 4456 8990 1200 5284 </data> </turbine> any comments / ideas are much appreciated. gary

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  • Problem with writeData

    - by zp26
    Hi, I have a problem with my code. I want to create a XML file like this: <name>myName<name> <x>myX<x> <y>myY<y> <z>myZ<z> but my file is: <name>myName<name><x>myX<x><y>myY<y><z>myZ<z> Can i have this text formatting? This is my code: -(void)salvataggioInXML:(NSString*)name:(float)x:(float)y:(float)z{ NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectoryPath = [paths objectAtIndex:0]; NSString *filePath = [documentsDirectoryPath stringByAppendingPathComponent:@"filePosizioni.xml"]; NSFileHandle *myHandle = [NSFileHandle fileHandleForUpdatingAtPath:filePath]; [myHandle seekToEndOfFile]; NSString *tagName = [NSString stringWithFormat:@"<name>%@<name>", name]; NSString *tagX = [NSString stringWithFormat:@"<x>%f<x>", name]; NSString *tagY = [NSString stringWithFormat:@"<y>%f<y>", name]; NSString *tagZ = [NSString stringWithFormat:@"<z>%f<z>", name]; NSData* dataName = [tagName dataUsingEncoding: NSASCIIStringEncoding]; NSData* dataX = [tagX dataUsingEncoding: NSASCIIStringEncoding]; NSData* dataY = [tagY dataUsingEncoding: NSASCIIStringEncoding]; NSData* dataZ = [tagZ dataUsingEncoding: NSASCIIStringEncoding]; [myHandle writeData:dataName]; NSLog(@"writeok"); [myHandle seekToEndOfFile]; [myHandle writeData:dataX]; NSLog(@"writeok"); [myHandle seekToEndOfFile]; [myHandle writeData:dataY]; NSLog(@"writeok"); [myHandle seekToEndOfFile]; [myHandle writeData:dataZ]; NSLog(@"writeok"); [myHandle seekToEndOfFile]; NSLog(@"zp26 %@",filePath); }

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  • NSThread terminating too early

    - by JustinXXVII
    I have an app that uploads to Google Spreadsheets via the GData ObjC client for Mac/iPhone. It works fine as is. I'm trying to get the upload portion on its own thread and I'm attempting to call the upload method on a new thread. Look: -(void)establishNewThreadToUpload { [NSThread detachNewThreadSelector:@selector(uploadToGoogle) toTarget:self withObject:nil]; } -(void)uploadToGoogle { NSAutoReleasePool *pool = [[NSAutoReleasePool alloc] init]; //works fine [helper setNewServiceWithName:username password:password]; //works fine [helper fetchUserSpreadsheetFeed]; //inside the helper class, fetchUserSpreadsheet feed calls ANOTHER method, which //calls ANOTHER METHOD and so on, until the object is either uploaded or fails //However, once the class gets to the end of fetchUserSpreadsheetFeed //control is passed back to this method, and [pool release]; //is called. The thread terminates and nothing ever happens. } If I forget about using a separate thread, everything works like it's supposed to. I'm new to thread programming, so if there's something I'm missing, please clue me in! Thanks!

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  • code to play sound programmatically using a button on the iphone

    - by Brandon
    I am trying to figure out how to hook up a button to play a sound programmatically without using IB. I have the code to play the sound, but have no way of hooking the button up to play the sound? any help? here is my code that I'm using: - (void)playSound { NSString *path = [[NSBundle mainBundle] pathForResource:@"boing_1" ofType:@"wav"]; AVAudioPlayer* myAudio = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path error:NULL]]; myAudio.delegate = self; myAudio.volume = 2.0; myAudio.numberOfLoops = 1; [myAudio play]; }

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  • How to implement checkout/basket system

    - by ct2k7
    Hi, I'm making an app for fun and would like to know how to implement a checkout/basket system on the app. Basically, a list of products is pulled in from a web server in form of XML file, which is then displayed in a UITableView controller. A tap on the cell takes the user to a more detailed overview of the product. The app would need to be able to get the product into a basket type thing, and this is where I'm getting stuck. Are there any code samples that I could take a look at?

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