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• PhoneGap iPad lauch screen does not fit

  - by powtac

  Hi, I created an App which is compatible to iPhone and iPad. Because it is based on HTML (PhoneGap) the App itself is the same for both devices (HTML scales well!). But the launch screen image does not fill out the display on the iPad upon launch. In my Ressorces folder there is only the iPhone launch image which is to small for the iPad, how can I add an other one for the iPad?

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• Simple string pattern matching

  - by Joonas Trussmann

  What's the easiest way of doing simple pattern matching a la .something.com something.com/ something.com/somefolder/*.jpg in the iPhone SDK? At this point it looks like I'm going to have to use a regular expression library of some sort, which is really overkill when all I need is simple wildcard matching. None of the standard NSString methods seem to be available on the iPhone.

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• registerForDraggedTypes with custom file formats

  - by cru3l

  Developer Documentations provides provides not fully describe of registerForDraggedTypes method. For example, i want that my app allow access only "*.abc" files. How can i do this?

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• Is there a way to initialize ImageKit's IKSaveOptions to default to TIFF with LZW compression?

  - by Rei

  I'm using Mac OS X 10.6 SDK ImageKit's IKSaveOptions to add the file format accessory to an NSSavePanel using: - (id)initWithImageProperties:(NSDictionary *)imageProperties imageUTType:(NSString *)imageUTType; and - (void)addSaveOptionsAccessoryViewToSavePanel:(NSSavePanel *)savePanel; I have tried creating an NSDictionary to specify Compression = 5, but I cannot seem to get the IKSaveOptions to show Format:TIFF, Compression:LZW when the NSSavePanel first appears. I've also tried saving the returned imageProperties dictionary and the userSelection dictionary, and then tried feeding that back in for the next time, but the NSSavePanel always defaults to Format:TIFF with Compression:None. Does anyone know how to customize the default format/compression that shows up in the accessory view? I would like to default the save options to TIFF/LZW and furthermore would like to restore the user's last file format choice for next time. I am able to control the file format using the imageUTType (e.g. kUTTypeJPEG, kUTTypePNG, kUTTypeTIFF, etc) but I am still unable to set the initial compression option for TIFF or JPEG formats. Thanks, -Rei

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• Location of New Window after old window closed

  - by John Brayton

  I have an app that allows multiple windows. I have a strange bug where, if I repeatedly open and close windows, new windows are positioned lower and lower on the screen. I would expect this if I were keeping the windows open, but it seems that the OS X window tiling mechanism is unaware of when my windows are closing. Potentially relevant notes: I am using garbage collection. This is not a document-based app. When I close a window, the corresponding menu item is removed from the "Window" menu. Any hints as to what I might be doing wrong would be appreciated. Thanks!

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• NSTimer as Alarm

  - by huntaub

  Is the best practice of setting an alarm on OS X to create a NSTimer scheduled for the number of seconds between the current time and the desired time for the alarm, or is there an alternative to that method?

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• Why is my NSMutableArray returning nill?

  - by lampShade

  I have a very simple task: add the contents of a textField to an NSMutableArray.The Problem is the array is returning nill. I believe that it has something to do with the fact that the array I'm using is declared as an instance variable. /* IBOutlet NSTextField *textField; IBOutlet NSTabView *tableView; IBOutlet NSButton *button; NSMutableArray *myArray; */ #import "AppController.h" @implementation AppController -(IBAction)addNewItem:(id)sender { NSString *string = [textField stringValue]; NSLog(@"%@",string); [myArray addObject:string]; NSLog(@"%d",[myArray count]);//this outputs 0 why is that? }

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• I need to load a video stored in Applications folder in to a UITableView ?

  - by srikanth rongali

  I need to load a video stored in Applications folder in to a table view. When I touched the cell the video plays. I used the following code to get all the video files in to an array. NSFileManager *fileManager = [NSFileManager defaultManager]; NSArray* contents = [fileManager directoryContentsAtPath:@"/Users/srikanth/Desktop/Projects/UF/Table2/Videos"]; for(a = 1; a < [contents count]; a++) NSLog(@"Array contents: %@", [contents objectAtIndex:a]); cells = [[NSMutableArray alloc]initWithCapacity:[contents count]]; But how can I load the videos into UITableView. I used NSBundle for loading videos by giving path. It worked. But, now I need the videos to load from the array contents. When I touch the cell of the table the corresponding file from the array contents si to be loaded. How can I make it? Thank you.

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• Blending Three Images into Graphics Context Using Alpha Blend Mode kBlendModeOverlay

  - by steganous

  Does kCGBlendModeOverlay not work exactly like Photoshop's Overlay blending mode? I'm trying to overlay three images into a graphic context via: [uiimageGreen drawAtPoint:CGPointMake(x, y) blendMode:kCGBlendModeOverlay alpha:1.0]; [uiimageRed drawAtPoint:CGPointMake(x, y) blendMode:kCGBlendModeOverlay alpha:1.0]; [uiimageBlue drawAtPoint:CGPointMake(x, y) blendMode:kCGBlendModeOverlay alpha:1.0]; In the end, if I overlay just two of the three, the result is much closer to my desired output color in places where both images intersect. Adding the third image, however, causes the first-drawn image's color to be dominant in the resulting mix of colors. (e.g. in the above code, green comes out dominant, when the result should actually be white) Do you get the same result if you try?

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• How to animate the drawing of a CGPath?

  - by Jordan Kay

  I am wondering if there is a way to do this using Core Animation. Specifically, I am adding a sub-layer to a layer-backed custom NSView and setting its delegate to another custom NSView. That class's drawInRect method draws a single CGPath: - (void)drawInRect:(CGRect)rect inContext:(CGContextRef)context { CGContextSaveGState(context); CGContextSetLineWidth(context, 12); CGMutablePathRef path = CGPathCreateMutable(); CGPathMoveToPoint(path, NULL, 0, 0); CGPathAddLineToPoint(path, NULL, rect.size.width, rect.size.height); CGContextBeginPath(context); CGContextAddPath(context, path); CGContextStrokePath(context); CGContextRestoreGState(context); } My desired effect would be to animate the drawing of this line. That is, I'd like for the line to actually "stretch" in an animated way. It seems like there would be a simple way to do this using Core Animation, but I haven't been able to come across any. Do you have any suggestions as to how I could accomplish this goal?

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• How to add a pop-up menu to a NSToolbarItem?

  - by Rui Pacheco

  Hi, I'm trying to open a pop-up menu from a NSToolbarItem. I tried following this example but I can't use that class method because NSToolbar and NSToolbarItem inherit from NSObject and not from NSView. Apart from creating a custom view, what is the best way to open a pop-up menu from a NSToolbarItem?

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• Problem with playing a sound when a button is clicked.

  - by iSharreth

  in my code: import "MyViewController.h" import (IBAction)playSound{ AVAudioPlayer *myExampleSound; NSString *myExamplePath = [[NSBundle mainBundle] pathForResource:@"myaudiofile" ofType:@"caf"]; myExampleSound =[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:myExamplePath] error:NULL]; myExampleSound.delegate = self; [myExampleSound play]; } But it is showing a warning that Class MyViewController does not implement AVAudioplayerDelegate. Anyone please help. I had included the AVFoundation.Framework.

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• How to save picture to iPhone photo library?

  - by jblocksom

  What do I need to do to save an image my program has generated (possibly from the camera, possibly not) to the system photo library on the iPhone?

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• CAShapeLayer slowing down interface rotation

  - by MrMage

  Hi, I am trying to move some custom drawing code from a view into a CAShapeLayer, which then get added as a sublayer to the original view's CALayer. This also works well, but when rotating the device, the animation starts to stutter, e.g. you just see the frame in the original orientation and then the final orientation, with at most one frame in between - not smooth at all. Slide-in and slide-out animations of the corresponding UIViewController are a bit jerky, too (but not that much). All the CAShapeLayer has in its path is one CGPathAddRect, it is set to be opaque, its opacity is 1.0f and the fillColor is set to opaque blue. When drawing the path directly in the views drawRect method, however, the animation is smooth. So I suppose it has something to do with the CAShapeLayer being animated during the rotation. Could you tell me how to either get rid of those jerkiness or just hide the CAShapeLayer when animating? Getting back to just draw CGPaths directly is not an option to me because I rely on the ability of CAShapeLayer to animate its path (it is not animated in my tries with rotating the view). /update: this also happens when the rotating UIViewControllers view contains a view with a subclass of CAGradientLayer as its layerClass (e.g. a view with a gradient layer as background). Cheers MrMage

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• Problem with Facebook API in iPad application

  - by PARTH

  Hi Guys, I am working on an iPhone application which is to be converted to iPad application. The iPhone app has a facebook and twitter API integrated and when I use the same into the iPad app then the Dialog for facebook API opens same as the size as in iPhone. So it looks very small. So Is there anything that I need to doin the code? Is there seperate API for twitter and facebook for use in iPad? Please Help and Suggest Thanks

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• Unselected UIPickerView value

  - by morticae

  According to the documentation, if a UIPickerView has no selected value, the expected return from selectedRowInComponent: should be: "A zero-indexed number identifying the selected row, or -1 if no row is selected." However, if I check the value the very line after initializing one, its value is 0. Even if I then manually set it to -1, it still returns 0. I would like to be able to detect whether the user has chosen a value yet or not, without recording it in a local variable. Is this possible? example: UIPickerView *picker = [[UIPickerView alloc] initWithFrame:CGRectMake(0.0, 46.0, 320.0, 216.0)]; [picker selectRow:-1 inComponent:0 animated:NO]; NSLog(@"SELECTED %d", [picker selectedRowInComponent:0]); expected output: SELECTED -1 actual output: SELECTED 0

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• Adding picture in pickerview

  - by iSharreth

  UIImageView *one = [[UIImageView alloc]initWithImage:[[UIImage alloc] initWithContentsOfFile:[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"ball1.png"]]] ; UIImageView *two = [[UIImageView alloc]initWithImage:[[UIImage alloc] initWithContentsOfFile:[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"ball2.png"]]] ; UIImageView *three = [[UIImageView alloc]initWithImage:[[UIImage alloc] initWithContentsOfFile:[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"ball3.png"]]] ; arrayBalls = [[NSArray alloc]initWithObjects:one,two,three,nil]; I used the above code for displaying image in the pickerview. But the application is crashing when executing this code. Anyone please help.

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• Storing arrays in NSUserDefaultsController

  - by neoneye

  Currently I use NSUserDefaults and I'm interested in using NSUserDefaultsController, so that I get notifications when things change. Below is my current code. items = /* NSArray of MYItem's */; NSData* data = [NSKeyedArchiver archivedDataWithRootObject:items]; [[NSUserDefaults standardUserDefaults] setObject:data forKey:kMYItems]; How should I rework my code to store items in NSUserDefaultsController ? Is NSKeyedArchiver the smartest way to store arrays? @interface MYItem : NSObject <NSCoding> { NSString* name; NSString* path; } @property (copy) NSString* name; @property (copy) NSString* path; @end @implementation MYItem @synthesize name, path; -(void)encodeWithCoder:(NSCoder*)coder { [coder encodeObject:name forKey:@"name"]; [coder encodeObject:path forKey:@"path"]; } -(id)initWithCoder:(NSCoder*)coder { [super init]; [self setName:[coder decodeObjectForKey:@"name"]]; [self setPath:[coder decodeObjectForKey:@"path"]]; return self; } @end

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• Replace the blue-gray stripes background in a grouped UITableView?

  - by John Lane

  How do I replace the vertical blue-gray stripes background in a grouped UITableView? For example, it would be cool to have a background of horizontal stripes instead! Here is a nice example:

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• How to make an NSOutlineView indent multiple columns?

  - by Rinzwind

  What would be the easiest or recommended way for making an NSOutlineView indent multiple columns? By default, it only indents the outline column; and as far as I know there is no built-in support for making it indent other columns. I have an NSOutlineView which shows a comparison between two sets of hierarchical data. For visual appeal, if some item in the outline column is indented, I'd like to indent the item on the same row in another column by the same indentation amount. (There's also a third column which shows the result of comparing the two items, this column should never be indented.) Can this only be achieved by subclassing NSOutlineView? And what would need to be overridden in the subclass? Or is there an easier way to get it to indent multiple columns?

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• How to change the text color on UINavigationBar button items

  - by lawrence

  I've got a UINavigationController and i've changed it to white using the Tint property of the navigation bar in Interface Builder. But the text in buttons and the title is still the default color, white, and so gets lost against the white background. Anyone know how to work around this?

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• An NSMenuItem's view (an NSView descendent) isn't highlighting on hover

  - by Alexsander Akers

  I need to use a custom NSView subclass to draw some content, but it isn't drawing as highlighted when the user hovers and it doesn't dismiss the NSMenu when the user clicks on it. Any ideas? Edit It's a subclass, not a descendent.

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• Objective-C respondsToSelector question.

  - by Holli

  From what I have learned so far: In Objective-C you can send any message to any object. If the object does implement the right method it will be executed otherwise nothing will happen. This is because before the message is send Objective-C will perform respondsToSelector. I hope I am right so far. I did a little program for testing where an action is invoked every time a slider is moved. Also for testing I set the sender to NSButton but in fact it is an NSSlider. Now I asked the object if it will respond to setAlternateTitle. While a NSButton will do and NSSlider will not. If I run the code and do respondsToSelector myself it will tell me the object will not respond to that selector. If I test something else like intValue, it will respond. So my code is fine so far. - (IBAction)sliderDidMove:(id)sender { NSButton *slider = sender; BOOL responds = [slider respondsToSelector:@selector(setAlternateTitle)]; if(responds == YES) { NSLog(@"YES"); } else { NSLog(@"NO"); } [slider setAlternateTitle:@"Hello World"]; } But when I actually send the setAlternateTitle message the program will crash and I am not exactly sure why. Shouldn't it do a respondsToSelector before sending the message?

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• Couldn't UIToolBar be transparent ?

  - by www.ruu.cc

  I try the following code, but it doesn't work. [helloToolbar setBackgroundColor:[UIColor clearColor]];

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• Custom TableViewCell with TextField and first responder

  - by Robb

  I have a custom TableView cell that contains a TextField and I want it to become the first responder as soon as the view is shown but [textcell.textfield becomeFirstResponder] does not work. I know it's because it's a custom cell in another class and I even tried it there and it didn't work. Anyone know how to pull this off? Thanks...

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