Search Results

Search found 23053 results on 923 pages for 'iphone dev'.

Page 443/923 | < Previous Page | 439 440 441 442 443 444 445 446 447 448 449 450  | Next Page >

  • UITabBarControllerDelegate compare value of viewController

    - by T9
    I have a tabBar with 4 tabs on it, and I want to perform some action when a specific tab is selected, so I have uncommented the UITabBarControllerDelegate in the xxAppDelegate.m I also wanted to see the value that was being sent logged in the console - in order to test my "if" statement. However this is where I got stumped. // Optional UITabBarControllerDelegate method - (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController { NSLog(@"%@", viewController); } The console dutifully logged any selected controller that had been selected, but in this particular format: <MyViewController: 0x3b12950> Now, I wasn't expecting the square brackets or the colon or the Hex. So my question is how do I format my IF statement? This is what I thought would work but I get an error mentioned further down. // Optional UITabBarControllerDelegate method - (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController { NSLog(@"%@", viewController); if (viewController == MyViewController) { //do something nice here … }; } ... The error is "Expected expression before 'MyViewController'" Anyone know how I should be doing this?

    Read the article

  • Clearing "may not respond" warnings for UIView and UIViewController

    - by user284681
    In an iPad app, I'm using a custom subclass of UIView with UIViewController. Here's the view header: @interface pdfView : UIView { CGPDFDocumentRef doc; } -(void)setDoc:(CGPDFDocumentRef)newDoc; @end And here's the controller header: @interface iPadPDFTestViewController : UIViewController { CGPDFDocumentRef doc; } - (void)loadPDF; @end Part of the controller implementation: - (void)viewDidLoad { [super viewDidLoad]; [self loadPDF]; [self.view setDoc:doc]; } In Interface Builder, I've set the view object to use the class pdfView. At compilation, [self.view setDoc:doc]; gives the warning "'UIView' may not respond to '--setDoc'." I'm guessing that this warning appears because the compiler thinks it's looking at UIView (which does not implement the setDoc method) instead of pdfView. But why does it think that? And how can I tell it what class it's really looking at, so as to clear the warning?

    Read the article

  • Accessing items separated by -componentsSeparatedByString

    - by Graeme
    Hi, I have an array gathered by componentsSeparatedByString: that looks like the following when I use po in the GDB after the array has gone through componentsSeparatedByString: "\n\t\t <b>Suburb, </b> BAIRNSDALE", "\n\t\t <b>Address, </b> 15K NW BAIRNSDALE", "\n\t\t <b>Reference, </b> MELWOOD/SCHOOL ROAD", "\n\t\t <b>Last Changed, </b> 09/04/10 05, 29, 00 PM", "\n\t\t <b>Type, </b> HOME", "\n\t\t <b>Status, </b> BUILT", "\n\t\t <b>Property Size, </b> 2.00 HA.", "\n\t\t <b>Residents, </b> 2", "\n\t\t <b>First Added Date/Time, </b> 09/04/10 03, 15, 00 PM", "\n\t\t\t" Only problem is, I now can't figure out where to go from here. I need to be able to access each of these items (i.e. type, status, property size) separately rather than just calling the entire array (i.e. currentProperty.status). How do I do this? Also what's with all the n\t\t\t things - how do I get rid of them? Thanks.

    Read the article

  • Passing a string representing my format specifier into stringWithFormat and seeing issues

    - by Jeff
    If I call "[NSString stringWithFormat:@"Testing \n %@",variableString]"; I get what I would expect, which is Testing, followed by a new line, then the contents of variableString. However, if i try NSString *testString = @"Testing \n %@"; //forgive shorthand here [NSString stringWithFormat,testString,variableString] the output actually literally writes \n to the screen instead of a newline. any workaround to this? seems odd to me

    Read the article

  • how to put api key when sharing with twitter

    - by kassar
    I wrote a code in objective c for sharing on twitter, I pass in to the api the username & password and it runs successfully. I have registered a twitter api key for my application but I don't know how I can pass it in the twitter api. Could you plz help me? Sorry for my english.

    Read the article

  • CGContextSetRBStrokeColor to replace, not add, for alpha?

    - by Peter Hajas
    I use CGContexts to allow the user to draw in my application, here's an example: CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound); CGContextSetLineWidth(UIGraphicsGetCurrentContext(), size); CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(),r,g,b,a); I want the user to have an "eraser" tool that actually erases - it can't draw white (that would add white to the image, which may not have a white background) or alpha (or else the stroke won't do anything). Is there a way to do this? Perhaps replacing contents of a CGContext or UIImage?

    Read the article

  • Miss a single tap randomly

    - by pion
    I have the following code snippets - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [touches anyObject]; NSUInteger numberTaps = [touch tapCount]; // Tapping if (numberTaps > 0) { // do something } ... The above code basically detects a single tap on a small image (width = 18 and height = 36). It works 90% of the time detecting a single tap. But it sometime misses it (randomly). I have to tap several times before it picks up the single tap. What did I do wrong or miss so I could consistently detect the single tap 100%? Thanks in advance for your help.

    Read the article

  • Adding a UIPickerView over a UITabBarController

    - by Kai
    I'm trying to have a UIPickerView slide from the bottom of the screen (over the top of a tab bar) but can't seem to get it to show up. The actual code for the animation is coming from one of Apple's example code projects (DateCell). I'm calling this code from the first view controller (FirstViewController.m) under the tab bar controller. - (IBAction)showModePicker:(id)sender { if (self.modePicker.superview == nil) { [self.view.window addSubview:self.modePicker]; // size up the picker view to our screen and compute the start/end frame origin for our slide up animation // // compute the start frame CGRect screenRect = [[UIScreen mainScreen] applicationFrame]; CGSize pickerSize = [self.modePicker sizeThatFits:CGSizeZero]; CGRect startRect = CGRectMake(0.0, screenRect.origin.y + screenRect.size.height, pickerSize.width, pickerSize.height); self.modePicker.frame = startRect; // compute the end frame CGRect pickerRect = CGRectMake(0.0, screenRect.origin.y + screenRect.size.height - pickerSize.height, pickerSize.width, pickerSize.height); // start the slide up animation [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:0.3]; // we need to perform some post operations after the animation is complete [UIView setAnimationDelegate:self]; self.modePicker.frame = pickerRect; // shrink the vertical size to make room for the picker CGRect newFrame = self.view.frame; newFrame.size.height -= self.modePicker.frame.size.height; self.view.frame = newFrame; [UIView commitAnimations]; // add the "Done" button to the nav bar self.navigationItem.rightBarButtonItem = self.doneButton; }} Whenever this action fires via a UIBarButtonItem that lives in a UINavigationBar (which is all under the FirstViewController) nothing happens. Can anyone please offer some advice?

    Read the article

  • Image Magic Make Fails - PHP extension

    - by Kyle Adams
    So I was doing the following: sudo apt-get install php-pear php5-dev sudo apt-get install imagemagick libmagickwand-dev sudo pecl install imagick It all works till I get the error: make: *** [imagick_class.lo] Error 1 ERROR: `make' failed Which according to blog posts and forms is because of libmagick9-dev, how ever when trying to install this I get: sudo apt-get install libmagick9-dev Reading package lists... Done Building dependency tree Reading state information... Done Package libmagick9-dev is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source However the following packages replace it: graphicsmagick-libmagick-dev-compat E: Package 'libmagick9-dev' has no installation candidate Thoughts?

    Read the article

  • Annotation Title/Subtitle under Pins

    - by ludo
    Hi, I use the Map to display some pin location from my database, everything is working fine. After that I use a pickerView to let the user display some specific pins. So I remove all the Pins first with [mapView removeAnnotations:mapView.anotations]; and display new Pins. There is like 100 of news pins, my problem is when I click on a Pin, the Title and subtitle are display under the others pins. Someone got the same problem? Thanks, P.S: Don't know if its relevant but I add a custom image for the pins.

    Read the article

  • Line smoothing in Cocoa Touch

    - by Sam Kaplan
    How would I smooth a line (UIBeizerPath) or a set of points? Right now it draws it jagged. I read about spline interpolation, could anyone point me to an implementation of this in cocoa or C or give me an alternate line smoothing algorithm.

    Read the article

  • If I want to play the same sound 10 times per second, must I have 10 copies of that sound in memory?

    - by mystify
    I have a sound that needs to get played 10 times per second. The sound is 1 second long. So it does overlap like 10 times. However, as far as I understand the Finch sound library, I would need 10 different instances of a sound in place so that I can play it 10 times at almost the same time. When I have just one instance, the sound would stop and play from the beginning on every iteration, but not overlap with itself. How to do that?

    Read the article

  • Problem with memory leaks

    - by user191723
    Sorry, having difficulty formattin code to appear correct here??? I am trying to understand the readings I get from running instruments on my app which are telling me I am leaking memory. There are a number, quite a few in fact, that get reported from inside the Foundation, AVFoundation CoreGraphics etc that I assume I have no control over and so should ignore such as: Malloc 32 bytes: 96 bytes, AVFoundation, prepareToRecordQueue or Malloc 128 bytes: 128 bytes, CoreGraphics, open_handle_to_dylib_path Am I correct in assuming these are something the system will resolve? But then there are leaks that are reported that I believe I am responsible for, such as: This call reports against this line leaks 2.31KB [self createAVAudioRecorder:frameAudioFile]; Immediately followed by this: -(NSError*) createAVAudioRecorder: (NSString *)fileName { // flush recorder to start afresh [audioRecorder release]; audioRecorder = nil; // delete existing file to ensure we have clean start [self deleteFile: fileName]; VariableStore *singleton = [VariableStore sharedInstance]; // get full path to target file to create NSString *destinationString = [singleton.docsPath stringByAppendingPathComponent: fileName]; NSURL *destinationURL = [NSURL fileURLWithPath: destinationString]; // configure the recording settings NSMutableDictionary *recordSettings = [[NSMutableDictionary alloc] initWithCapacity:6]; //****** LEAKING 384 BYTES [recordSettings setObject:[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey: AVFormatIDKey]; //***** LEAKING 32 BYTES float sampleRate = 44100.0; [recordSettings setObject:[NSNumber numberWithFloat: sampleRate] forKey: AVSampleRateKey]; //***** LEAKING 48 BYTES [recordSettings setObject:[NSNumber numberWithInt:2] forKey:AVNumberOfChannelsKey]; int bitDepth = 16; [recordSettings setObject: [NSNumber numberWithInt:bitDepth] forKey:AVLinearPCMBitDepthKey]; //***** LEAKING 48 BYTES [recordSettings setObject:[NSNumber numberWithBool:YES] forKey:AVLinearPCMIsBigEndianKey]; [recordSettings setObject:[NSNumber numberWithBool: NO]forKey:AVLinearPCMIsFloatKey]; NSError *recorderSetupError = nil; // create the new recorder with target file audioRecorder = [[AVAudioRecorder alloc] initWithURL: destinationURL settings: recordSettings error: &recorderSetupError]; //***** LEAKING 1.31KB [recordSettings release]; recordSettings = nil; // check for erros if (recorderSetupError) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle: @"Can't record" message: [recorderSetupError localizedDescription] delegate: nil cancelButtonTitle: @"OK" otherButtonTitles: nil]; [alert show]; [alert release]; alert = nil; return recorderSetupError; } [audioRecorder prepareToRecord]; //***** LEAKING 512 BYTES audioRecorder.delegate = self; return recorderSetupError; } I do not understand why there is a leak as I release audioRecorder at the start and set to nil and I release recordSettings and set to nil? Can anyone enlighten me please? Thanks

    Read the article

  • drawing images and lines over UIScrollView

    - by Jorge
    I'm programming an app in which one of the ViewControllers is showing an UIScrollView that shows an image. I'd like to load an image (pushpin in png format) and draw it (and delete it) in some points of the UIScrollView image. I'd also would like to draw bezier paths in that image (and deleting them). I've programmed several apps but this is the first time I face graphic programming and don't know where to start from. Any suggestions? Thanks!

    Read the article

  • How can I set a highlighted image on a table view cell?

    - by nevan
    I've followed the code in Apple's AdvancedTableViewCells and built a table view with a background image for cells. Now I want to change it so that instead of the blue highlight colour, it shows a darker version of my image. What are the steps I need to follow to do this? I'm using a UITableViewCell subclass with a custom NIB. My background image is implemented as the cell.backgroundView. The steps I've take so far are: Change the selectionStyle of the cell to "None" Set the Highlight colour on my UILabel subviews to a light colour Create a darker version of my background as a separate image Override setSelected: animated: I'm wondering about the next steps.

    Read the article

  • Add double tap action (presentModalViewController) to UISCOLLVIEW

    - by R.J.
    I have been wrestling this issue for a while now and cannot seem to get the following "touchesEnded" method to execute within a UISCROLLVIEW. I have read on many of the forums that UISCROLLVIEW will take control of all touch events unless it is subclassed, but I cannot seem to get the code right (still new to the SDK). Basically I have a scrollview made uo with several UIIMAGEVIEW's and currenlty have scrolling with paging (much like the photo app). I have been studying the SCROLLING MADDNESS example without success. All I want to do is anywhere in the UISCROLLVIEW have the user double tap to presentModalViewController back to my info page (i.e.) (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { NSSet *allTouches = [event allTouches]; switch ([allTouches count]) { case 1: {// One finger touch UITouch *touch = [[allTouches allObjects] objectAtIndex:0]; if ([touch tapCount] == 2) {InfoButtonViewController *scroll = [[InfoButtonViewController alloc] initWithNibName:nil bundle:nil]; scroll.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; [self presentModalViewController:scroll animated:YES]; [scroll release]; } } } } Any code assistance would be greatly appreciated. The UISCROLLVIEW is implemented as follows (let me know if I need to provide additional details). Thank you in advance... MyViewController.h @interface MyViewController : UIViewController { } @end

    Read the article

  • ASIHTTP: addOperation when other threads are running

    - by user262325
    Hello everyone I have a project using ASIHTTP to multi download files from a site when I add a new request: [networkQueue cancelAllOperations]; [networkQueue setDownloadProgressDelegate:a]; [networkQueue setDelegate:self]; [networkQueue setRequestDidFinishSelector:@selector(requestDone:)]; NSURL *url = [NSURL URLWithString:@"http://www.google.com"]; ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url]; [request setDelegate:self]; [request startAsynchronous]; [networkQueue addOperation:request]; [networkQueue go]; it reported: * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[ASINetworkQueue addOperation:]: operation is executing and cannot be enqueued' It looks like I can not add a new request when others are running. Welcome any comment Thanks interdev

    Read the article

  • UIImage from NSDocumentDirectory leaking memory

    - by Emil
    Hey. I currently have this code: UIImage *image = [[UIImage alloc] initWithContentsOfFile:[imagesPath stringByAppendingPathComponent:[NSString stringWithFormat:@"/%@.png", [postsArrayID objectAtIndex:indexPath.row]]]]; It's loading in an image to set in a UITableViewCell. This obviously leaks a lot of memory (I do release it, two lines down after setting the cells image to be that image), and I'm not sure if it caches the image at all. Is there another way, that doesen't leak so much, I can use to load in images multiple times, like in a tableView, from the Documents-directory of my app? Thanks.

    Read the article

  • How do I remove those rotation artefacts from my CATiledLayer?

    - by Felix
    Hello all, I have a CATiledLayer into which I render content in the following method - (void)drawLayer:(CALayer *)layer inContext:(CGContextRef)ctx I used the QuartzDemo code to draw a pattern. This works very well until I apply a rotation transform to the layer's parentLayer (a UIView): rotated: These zigzag artefacts become worse when I start drawing lines and texts into the CATiledLayer. I applied the transform as follows (I also tried using an affine transform on the view itself): self.containerView.layer.transform = CATransform3DMakeRotation(angleRadians, 0.0f, 0.0f, 1.0f); I transform the containerView rather than the layer itself, as I have several layers in that view that I would like to rotate at the same time without changing the relative positions. I did not have problems when rotating UIImageViews in the past. Is there a way that I can rotate the CATiledLayer without these problems? Any help would be greatly appreciated. Yours, Felix

    Read the article

  • How to set that compiler flag?

    - by mystify
    Shark told me this: This instruction is the start of a loop that is not aligned to a 16-byte address boundary. For optimal performance, you should align the start of a hot loop using a compiler directive. With gcc 3.3 or later, use the -falign-loops=16 compiler flag. for (int i=0; i < 4; i++) { // line with the info //...code } How would I set that flag, and does it really improve performance?

    Read the article

  • Crash in Reachability API

    - by Marc
    I'm using the Reachability sample code provided by Apple to check the network connectivity and get notified of changes (Reachability Sample code). I had a look at some crash locks of my app. It seems that some crashes are due to the Reachability/SystemConfiguration Reachablity API stuff (see below). SCNetworkReachabilityGetFlags is only used in the Reachability class provided by Apple. Or am I misinterpreting the crash log? Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x00000000, 0x00000000 Crashed Thread: 0 Thread 0 Crashed: 0 libSystem.B.dylib 0x00000e70 mach_msg_trap + 20 1 libSystem.B.dylib 0x00003354 mach_msg + 60 2 SystemConfiguration 0x0001f480 configopen + 168 3 SystemConfiguration 0x00004d08 SCDynamicStoreCreateWithOptions + 272 4 SystemConfiguration 0x00004e54 SCDynamicStoreCreate + 24 5 SystemConfiguration 0x00015244 updateReachabilityStoreInfo + 152 6 SystemConfiguration 0x00016f04 updateCommCenterStatus + 32 7 SystemConfiguration 0x00017678 checkAddress + 1368 8 SystemConfiguration 0x0001a260 __SCNetworkReachabilityGetFlags + 1992 9 SystemConfiguration 0x0001b00c rlsPerform + 132 10 CoreFoundation 0x00058266 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 8 11 CoreFoundation 0x00028692 __CFRunLoopDoSources0 + 214 12 CoreFoundation 0x00027f62 __CFRunLoopRun + 258 13 CoreFoundation 0x00027d74 CFRunLoopRunSpecific + 220 14 CoreFoundation 0x00027c82 CFRunLoopRunInMode + 54 15 GraphicsServices 0x00004e84 GSEventRunModal + 188 16 UIKit 0x00004f8c -[UIApplication _run] + 564 17 UIKit 0x000024cc UIApplicationMain + 964 18 MyApp 0x0000f80c main (main.m:21) 19 MyApp 0x0000f77c start + 44

    Read the article

  • How switch UIViewController by flip from 3 controllers ?

    - by Sergey
    Hello, all. I've got next problem: i've got 3 UIViewController and need to switch controllers by UIModalTransitionStyleFlipHorizontal. Next code working fine: testController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; [self presentModalViewController:testController animated:YES]; where testController - next controller to switch, self - current controller. And when i've set 3rd controller - it's working fine, but i have problem with back to first controller - when i back to first controller - i can't go to second controller. 1 - 2 - 3 - 1 - it's working fine, but - 2 - don't show. what's mistake ?

    Read the article

< Previous Page | 439 440 441 442 443 444 445 446 447 448 449 450  | Next Page >