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• iPhone modal View with parent view semi-visible?

  - by Moshe

  I am adding a modal view using the following code: [self presentModalViewController:phrasesEditor animated:YES]; How can I make the modal view semi-transparent so that the superview "shines" through? My complete method/function looks like this: -(IBAction)showEditPhrases:(id)sender{ PhrasesViewController *phrasesEditor = [[PhrasesViewController alloc] initWithNibName:@"PhrasesViewController" bundle:nil]; phrasesEditor.modalTransitionStyle = UIModalTransitionStyleCrossDissolve; [phrasesEditor.view setAlpha: 0.5]; [phrasesEditor.view setBackgroundColor: [UIColor clearColor]]; [self presentModalViewController:phrasesEditor animated:YES]; [phrasesEditor release]; }

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• Calling UIGetScreenImage() on manually-spawned thread prints "_NSAutoreleaseNoPool():" message to lo

  - by jtrim

  This is the body of the selector that is specified in NSThread +detachNewThreadSelector:(SEL)aSelector toTarget:(id)aTarget withObject:(id)anArgument NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; while (doIt) { if (doItForSure) { NSLog(@"checking"); doItForSure = NO; (void)gettimeofday(&start, NULL); /* do some stuff */ // the next line prints "_NSAutoreleaseNoPool():" message to the log CGImageRef screenImage = UIGetScreenImage(); /* do some other stuff */ (void)gettimeofday(&end, NULL); elapsed = ((double)(end.tv_sec) + (double)(end.tv_usec) / 1000000) - ((double)(start.tv_sec) + (double)(start.tv_usec) / 1000000); NSLog(@"Time elapsed: %e", elapsed); [pool drain]; } } [pool release]; Even with the autorelease pool present, I get this printed to the log when I call UIGetScreenImage(): 2010-05-03 11:39:04.588 ProjectName[763:5903] *** _NSAutoreleaseNoPool(): Object 0x15a2e0 of class NSCFNumber autoreleased with no pool in place - just leaking Has anyone else seen this with UIGetScreenImage() on a separate thread?

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• UITableViewCellStyleDefault label width

  - by Rob Bonner

  Hello all, I am getting some odd behavior from stock table cells, or maybe not odd, maybe I am making some assumptions. I create the cells as follows: cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; Then I assign an image to the default imageView property. My image usually comes in from a user, so it might be larger than the default size. To take care of this I: [cell.imageView setContentMode:UIViewContentModeScaleAspectFit]; which I expected to scale the image for me within the control, but in reality, the images are all over the map. So, is there a proper way to constrain the image in stock cell types? Thanks in advance!

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• What could cause a button on a UIActionSheet to "miss" on touches?

  - by Alex Gosselin

  I have a UIActionSheet as follows: UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:[NSString stringWithFormat: @"Cancel New %@? Changes will be lost.", [creator propertyName]] delegate:self cancelButtonTitle:@"Stay Here" destructiveButtonTitle:@"Discard and Close" otherButtonTitles:@"Save and Close", nil]; [sheet showInView:self.view]; [sheet release]; It creates the action sheet, The buttons display, the Destructive button is on top, cancel button is on the bottom, other button (save and close) shows up in the middle, the top two buttons, (destructive and other) work fine, but the bottom button has a gap, so it is farther down than the other buttons. For some reason though, in order to press the button I need to touch where it would be if there was no gap. Touching the actual button doesn't work. Sorry if this isn't super clear, has anyone encountered something like this? I don't like to whip out the "I found a bug" card too fast, maybe I'm doing something wrong here.

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• Trying to create link with NSTextField

  - by Chris

  I'm using this category (is that right?) http://www.nightproductions.net/references/dsclickableurltextfield_reference.html#setAttributedStringValue to implement clickable textfields. I've imported the header file in my controller class and set it's attributed string value like this NSAttributedString* str = [[NSAttributedString alloc] initWithString:@"http://www.yahoo.com"]; [url setAttributedStringValue:(NSAttributedString *)str]; [str release]; The text field is not selectable and not editable. The text field value is set but it's not clickable and it's not a link. Thanks in advance.

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• Presentmodalviewcontroller method problem with retain count

  - by Infinity

  Hello guys! I am trying to present a modal view controller. I have read the documentation, but something is strange. Here's my code: NSLog(@"rc: %d", [modalViewController retainCount]); UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:modalViewController]; [self presentModalViewController:navigationController animated:YES]; [navigationController release]; NSLog(@"rc: %d", [modalViewController retainCount]); And on the console, appears: rc: 2 rc: 24 And I think 24 is very strange... What do you thin? Why is this happening?

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• TTTabItem in three20 icon not working?

  - by Frank

  I have been trying to get TTTabItem to work with images. And I dug up that you can set the icon to an image file. This is my implemenation: TTTabItem *tab1 = [[[TTTabItem alloc] initWithTitle:@"Item 1"] autorelease]; tab1.icon = @"bundle://icon_eat_min.png"; filterBar.tabItems = [NSArray arrayWithObjects: tab1, nil]; [scrollView addSubview:filterBar]; However, my icon doesn't even appear. I even search through this group: http://groups.google.com/group/three20/browse_thread/thread/f879f6643... and override the rounded style. But I am just contemplating why would you have an something you can set and not have it work? or am i doing this badly

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• UITableViewCell is 1px shorter in didSelectRowAtIndexPath than cellForRowAtIndexPath

  - by Calvin L

  I have a UITableViewCell that I create in tableView:cellForRowAtIndexPath:. In that method I call: UITableViewCell *cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:nil] autorelease]; NSLog(@"Cell height: %f", cell.contentView.frame.size.height); This gives me a return value of 44.000000. Then in my tableView:didSelectRowAtIndexPath: method, I call: UITableViewCell *cell = [tableView cellForRowAtIndexPath: indexPath]; NSLog(@"Cell height: %f", cell.contentView.frame.size.height); And this gives me a return value of 43.000000. Aren't they the same cell? What gives?

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• using performSelector

  - by zebra

  Hi all, i've my method that implement a reverseGeocoder - (void)reversing { geoCoder=[[MKReverseGeocoder alloc] initWithCoordinate:locManager.location.coordinate]; geoCoder.delegate=self; [geoCoder start]; } i recall reversing in another method with this: [self performSelector:@selector(reversing) withObject:nil afterDelay:10]; and i receive 2010-04-30 17:44:17.616 high[1167:207] Retrive City Milano 2010-04-30 17:44:17.628 high[1167:207] geocoder released 2010-04-30 17:44:18.723 high[1167:207] Error Domain=MKErrorDomain Code=4 "Operation could not be completed. (MKErrorDomain error 4.)" Program received signal: “EXC_BAD_ACCESS”. Can someone help me? :D

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• How do I add artwork to an iTunes track with obj-c AppScript?

  - by demonslayer319

  aTrack is an ITReference* object, value is an NSImage* object, initialized via a URL to a jpeg. [[[[[aTrack artworks] data_] set] to:value] send]; I get the following message in GDB: 2010-03-09 16:59:42.860 Sandbox[2260:a0f] Can't pack object of class NSImage (unsupported type): <NSImage 0x10054a440 Size={0, 0} Reps=( I then tried the following code: NSData *imageData = [[NSData alloc] initWithData:[value TIFFRepresentation]]; [[[[[aTrack artworks] data_] set] to:imageData] send]; and get this message instead 2010-03-09 16:46:09.341 Sandbox[2193:a0f] Can't pack object of class NSConcreteData (unsupported type): <4d4d002a 00000000> In the AppScript documentation, it says that the "data" property of the "artwork" item is a PICTPicture image. How do I convert an NSImage to a PICT? Am I using the AppScript all wrong?

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• HOw to use UIIMagePickerController?

  - by aman-gupta

  Hey, IN my application I m using this code on button click for getting image from PhotoLibrary:- -(IBAction) getPhoto:(id) sender { UIImagePickerController *picker = [[UIImagePickerController alloc]init]; picker.delegate = self; picker.sourceType =UIImagePickerControllerSourceTypePhotoLibrary; [self presentModalViewController:picker animated:YES]; [picker release]; //picker = nil; } -(void)imagePickerController:(UIImagePickerController *) picker didFinishPickingMediaWithInfo:(NSDictionary *)info { imageView.image = [info objectForKey:@"UIImagePickerControllerOriginalImage"]; [picker dismissModalViewControllerAnimated:YES]; } But problem is that when i run my application in mobile it will get terminated on button click.Where I m wrong it works properly on iphone simulator but termninating on iphone Device Please reply me its urgent Thanks in Advance

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• NSMutableArray withObject(UIImageView *)

  - by pureman

  I am trying to load an NSMutableArray with UIImageViews. Everything is going fine with that. Unfortunately, I have no idea how to use the objects when they are in the mutable array. Here is some code: UIImageView *imageView = [[UIImageView alloc] initWithImage:image]; NSMutableArray *array = [NSMutableArray new]; [array loadWithObject:(UIImageView *)imageView]; [imageView release]; That kind of sets up what I've done. Here's what I want to do: [array objectAtIndex:5].center = GCRectMake(0, 0); but that doesn't work. How can I do this??

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• productsRequest response method is not calling

  - by jeeva

  Hi i am implementing in app purchase i am sending request to apple store through - (void) requestProductData { SKProductsRequest *request= [[SKProductsRequest alloc] initWithProductIdentifiers: [NSSet setWithObjects: featureAId,featureBId,nil]]; // add any other product here request.delegate = self; [request start]; } the response method - (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response { [purchasableObjects addObjectsFromArray:response.products]; } is not getting call at all. only once it called out of ten attempts i tried. any idea regarding this..? thanks in advance

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• Add UIView behind UITableView in UITableViewController code

  - by Drew C

  I would like to use a fixed image as the background in a simple grouped table view in my iPhone program. Unfortunately, no matter what I do, the background is always solid white. I have followed several supposed solutions on this site and others to no avail. Here is the relavant code in the viewDidLoad method of the table view controller class (note, this code uses a solid blue color rather than an image for simplicity's sake): self.tableView.opaque = NO; self.tableView.backgroundColor = [UIColor clearColor]; UIView *backgroundView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)]; backgroundView.backgroundColor = [UIColor blueColor]; [self.tableView.window addSubview:backgroundView]; [backgroundView release]; I suspect that I am not positioning the backgroundView view in the right place. I have tried sendToBack:, bringToFront:, and others but I always just get a white background. Is it possible to do this from within the UITableViewController? Must I use Interface Builder?

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• Toubleshooting mapkit performance

  - by brettr

  I'm plotting over 500 points on a map using mapkit. Zooming is a little jittery compared to the native google map app. I've discovered what is causing the slowness. I'm adding custom annotations so that I can later add different pin colors and buttons for detail views: - (MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:(AddressNote *) annotation { MKPinAnnotationView *annView=[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"currentlocation"]; annView.pinColor = MKPinAnnotationColorGreen; annView.animatesDrop=TRUE; annView.canShowCallout = YES; annView.calloutOffset = CGPointMake(-5, 5); return annView; } If I comment out the above code, everything works fine. Very smooth with zooming in/out. Should I be adding annotations differently to boost performance?

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• Using UIImageView for a flipbook anim on iphone

  - by Joey

  I'm using UIImageView to run a flipbook anim like this: mIntroAnimFrame = [[UIImageView alloc] initWithFrame:CGRectMake( 0, 0, 480, 320); mIntroAnimFrame.image = [UIImage imageNamed:@"frame0000.tif"]; Basically, when determine it is time, I flip the image by just calling: mIntroAnimFrame.image = [UIImage imageNamed:@"frame0000.tif"]; again with the right frame. Should I be doing this differently? Are repeated calls to set the image this way possibly bogging down main memory, or does each call essentially free the previous UIImage because nothing else references it? I suspect the latter is true. Also, is there an easy way to preload the images? The anim seems to slow down at times. Should I simply load all the images into a dummy UIImage array so they are preloaded, then refer to it when I want to show it with mIntroAnimFrame.image = mPreloadedArray[i]; ?

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• Height of tableHeaderView seems to be 0

  - by gabac

  I tried to override the second tableHeaderView. But it seems that the height of it in the method heightForHeaderInSection seems to be 0. Can't explain it, do I have to put it in a iVar because in the viewForHeaderInSection I can set the view without any problems. - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section { if(section == 0) return @"Adding a new list"; else return @"Other lists"; } - (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section { if(section == 0) { return tableView.tableHeaderView; } else { UIView *view = [[[UIView alloc] initWithFrame:CGRectMake(10, 10, 100, 50)] autorelease]; view.backgroundColor = [UIColor redColor]; return view; } } - (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section { if(section == 0) return tableView.tableHeaderView.frame.size.height; else return 30; }

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• Two UIViews in one .xib file?

  - by Tronic

  hi, i made a second uiview in mei .xib file. the first view is landscape and i get it by following code ItemController *newItem; newItem = [[ItemController alloc] init]; newItem.view..... how can i "activate" the second view, so i can use it with newItem.view2... is that possible? the second view is portait mode, so it should be hidden and when turning the ipad the first view should be hidden and the second gets visible. thanks

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• document directory problem?

  - by senthilmuthu

  When i write Data(53MB ) to Document directory ,the data is not written when i check directly through application support path.i coded like this, - (BOOL)writeApplicationData:(NSData *)data toFile:(NSString *)fileName { NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; if (!documentsDirectory) { NSLog(@"Documents directory not found!"); return NO; } NSString *appFile = [documentsDirectory stringByAppendingPathComponent:fileName]; return ([data writeToFile:appFile atomically:YES]); } it works fine, but when i read the data using follwing code, the data is null, anyhelp pls? - (NSData *)applicationDataFromFile:(NSString *)fileName { NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *appFile = [documentsDirectory stringByAppendingPathComponent:fileName]; NSData *myData = [[[NSData alloc] initWithContentsOfFile:appFile] autorelease]; return myData; }

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• xcode syntax color coding explained?

  - by Max Fraser

  Can anyone give me a quick rundown of the color syntax meanings in xcode? I am running into some problems and understanding the color coding I am sure will help me out. Currently I have some variables that are light blue and I think they need to be black but I am not sure of the difference? masterViewController=[[UINavigationController alloc] initWithDestination: destination]; I believe my masterViewController here should be colored black and not the light blue it is currently colored - I am assuming I defined or initialized something wrong somewhere. First day in xCode so I am pretty damn confused!

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• Addressing a memory leak stops my UI from showing iphone

  - by dubbeat

  Hi I've being getting a memory leak warning with a UITabbarcontroller. If I release the tabbarcontroller the warning goes away but the tabbar will not show any content. If I debug the app with the warning still in it the app runs but will crash after a couple of minutes UITabBarController *tabBarController = [[UITabBarController alloc] init]; tabBarController.view.frame = CGRectMake(0, 0, 320, 460); tabBarController.viewControllers=localControllersArray; // Clean up objects we don't need anymore [promoTabOptionHome release]; [promoTabOptionInfo release]; [promoTabOptionEvents release]; [promoTabOptionBuy release]; [localControllersArray release]; // Finally, add the tab controller view to the parent view [self.view addSubview:tabBarController.view]; //[tabBarController release]; commenting out this line removes the warning but results in no content being shown

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• Background image of table cell

  - by Shuaib

  Hey guys, Trying to set a background image for a table view cell, tried almost everything but failing. Hoping someone would notice what I am doing wrong. Here is how my current code looks like: static NSString *CustomCellIdentifier = @"listCustomCell"; listCustomCell *cell = (listCustomCell *)[tableView dequeueReusableCellWithIdentifier: CustomCellIdentifier]; if (cell == nil) { NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"listCustomCell" owner:self options:nil]; for (id oneObject in nib) if ([oneObject isKindOfClass:[listCustomCell class]]) cell = (listCustomCell *)oneObject; } cell.backgroundColor = [UIColor clearColor]; UIImageView *backgroundImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"list_selected.png"]]; //[cell setBackgroundView:backgroundImageView]; cell.backgroundView = backgroundImageView; The image won't show up in the background of the cell. All I see is plain white background. Thanks for help.

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• Release objects before returning a value based on those object?

  - by Moshe

  Consider the following method, where I build a string and return it. I would like to release the building blocks of the sting, but then the string is based on values that no longer exists. Now what? Am I leaking memory and if so, how can I correct it? - (NSString) getMiddahInEnglish:(int)day{ NSArray *middah = [[NSArray alloc] initWithObjects:@"Chesed", @"Gevurah", @"Tiferes", @"Netzach", @"Hod", @"Yesod", @"Malchus"]; NSString *firstPartOfMiddah = [NSString stringWithFormat: @"%@", [middah objectAtIndex: ((int)day% 7)-1]]; NSString *secondPartOfMiddah = [NSString stringWithFormat: @"%@", [middah objectAtIndex: ((int)day / 7)]]; NSString *middahStr = [NSString string@"%@ She'bi@%", firstPartOfMiddah, secondPartOfMiddah]; [middah release]; [firstPartOfMiddah release]; [secondPartOfMiddah release]; return middahStr; }

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• Line breaks in "NSString"s returned from PList don't work.

  - by Moshe

  I've seen this post: http://stackoverflow.com/questions/2035567/nsstring-newline-escape-in-plist but I'd like to know if there's a way to pragmatically render \n line breaks. I'm currently using: decisionText.text = [NSString stringWithFormat: (@"%@", [replies objectAtIndex:(arc4random() % [replies count])])]; Which randomly grabs a String from the replies array. The array was loaded from a plist like so: replies = [[NSMutableArray alloc] initWithContentsOfFile:[[NSBundle mainBundle]pathForResource:@"AdviceList" ofType:@"plist"]]; What am I missing? The answer can't be to manually enter line breaks. That's not programming! (Sounds like word processing to me.)

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• Navigation bar not displayed if Tabbar used in a view

  - by iPhoneDev

  Hello, My App is Navigation based template. Only one view requires Tab Bar. So I programmatically add a UITabBar in view as: tbc = [[UITabBarController alloc] initWithNibName:nil bundle:nil]; tbc.viewControllers = [NSArray arrayWithObjects:blueController, redController, nil]; tbc.selectedViewController = redController; [self presentModalViewController:tbc animated:YES]; But I am unable to get "Navigation Bar" at top in this view. Can any one help to know how I can have Tabs in bottom and navigation bar in top. Please help it I am not able to find the solution.

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