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• Referencing to objects from anywhere in Cocoa

  - by dave-gennel

  What's the best way to reference to a dynamically allocated object (particularly interface elements) so I can access them from everywhere in the current class? @synthesize? declaring the object in the interface section? anything else?

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• SBJson returning nil causing cocoa window to not show up

  - by Matt S.

  I'm using the example here. If there isn't a value for the key, my application returns -[NSCFArray insertObject:atIndex:]: attempt to insert nil in the console, and my window doesn't show up. How could I preform a check to make sure this doesn't happen?

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• Mac OS - Download an save an image file on HDD with Cocoa

  - by Julien

  I'm building a program, and I'm quite confident using Objective-C, but I don't know how to programmatically download a file from the web and copy it on the hard drive. I started with : NSString url = @"http://spiritofpolo.com/images/logo.png"; NSData* data = [NSData dataWithContentsOfURL:[NSURL URLWithString:url]]; But then I don't know what to…

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• Cocoa touch - creating view template for iPad

  - by teepusink

  Hi, This is kinda a hard question to describe. I'm just starting to make an iPad app. Now with the amount of real estate I have, I'm planning to have different but similar "views" to populate the space. (might be easier to think a newspaper site, where many of the columns are similar) I would like to create a "view template" so I can reuse the…

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• Cocoa: Set selected color

  - by Matt S.

  How can I set the selection color? In this case, it's the color of a selection in an NSTableView

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• Hiding NSPanel through a timer in Cocoa

  - by user307242

  Hello, I am new to Xcode and would like to know how to hide an NSPanel when a timer tick, I have tried to call [myNSPanel orderout:self], the code runs but the panel is still there. Do I need to do something different? Thanks in advance.

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• I cannot get the value of a table view cell in cocoa touch

  - by Michael Amici

  I am trying to get the value of a cell in a table view but it won't let me. If someone could help that would be great. int numberOfChecks = -1; numberOfChecks = numberOfChecks +1; if ([objectsForTable count]-1 >= numberOfChecks) { UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:numberOfChecks]; NSString…

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• Clarification on Threads and Run Loops In Cocoa

  - by dubbeat

  I'm trying to learn about threading and I'm thoroughly confused. I'm sure all the answers are there in the apple docs but I just found it really hard to breakdown and digest. Maybe somebody could clear a thing or 2 up for me. 1)performSelectorOnMainThread Does the above simply register an event in the main run loop or is it somehow a new…

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• Cocoa: NSOpenPanel Threads

  - by Craig

  I am monitoring my application using Activity Monitor and whenever NSOpenPanel is called the application appears as having 9 threads and stays like that until the application is closed. Is there a way to release those threads?, Or am I simply misunderstanding what the threads number means?, surely it isn't a good thing to have them open…

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• Drop down view in cocoa

  - by coffeebean

  I'm looking to create a 'drop down' view that falls in front of the main window. An example of this would be the window that drops down when you click 'Advanced' in System Preferences-Networking. If someone could point me in the right direction documentation-wise that would be great. Thanks in advance.

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• Cocoa touch: decorating text

  - by user365904

  I've added a UIAppFont to my plist, and, happily, am able to write a custom font to my display. Now, if I had to display this custom font in a very large size with a yellow outline and purple in the middle- how in the world would I achieve that??

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• NSApp Sheets question in cocoa

  - by califguy

  Hi, Here's what I am trying to do. I need to prompt the user for a password prompt and until he enters the password and hits, say the Enter button on the sheet, I want to prevent the code being parsed in the background. Here's the code to run the sheet and when the user enters the password and hits Enter, endSpeedSheet is run. I am…

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• cocoa - referencing a method on the parent

  - by Mike

  I had a method on my main view controller named "calculateThis". This method was run, obviously, as int newValue = [self calculateThis:myVariable]; when I run it from inside the view controller. Then I created a static class and I need to run this method from there. How do I reference this method from that class using just…

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• Cocoa multhithreads, locks don't work

  - by Igor

  I have a threadMethod which shows in console robotMotorsStatus every 0.5 sec. But when I try to change robotMotorsStatus in changeRobotStatus method I receive an exception. Where I need to put locks in that program. #import "AppController.h" @implementation AppController extern char *robotMotorsStatus; -…

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• Cocoa: Get frontmost window of active application

  - by Marcel M.

  How can I get the UIWindow object from the frontmost application?

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• Cocoa: SBJSON check if field exists

  - by Matt S.

  How can I check if a field exists?

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• Download an save an image file on HDD with Cocoa

  - by Julien

  I'm building a program, and I'm quite confident using Objective-C, but I don't know how to programmatically download a file from the web and copy it on the hard drive. I started with : NSString url = @"http://spiritofpolo.com/images/logo.png"; NSData* data = [NSData dataWithContentsOfURL:[NSURL…

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• Cocoa WebView won't render all images on OSX 10.8

  - by user2906962

  I'm currently developing an application for OS X, backwards compatible with OS X 10.6. At some point I create a WebView in which I load html content that I create dynamically. The html content is formed only of image links <img src= and text, there is no javascript or anything of that kind.…

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• keyboard interaction with Cocoa?

  - by mactonny

  Hey guys, I am trying do write an application(server) which receives the keyboard instructions from the client and execute them on the server end. It's more like those screen recorders which records your keyboard and mouse events and replay them. For example, you pull up a textedit on the…

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• Loading HTML into a Cocoa app with WebView and change text

  - by Domness

  Right, so far I've got this for loading up a HTML file from within my app: NSString *path1 = [[NSBundle mainBundle] pathForResource:@"file" ofType:@"html"]; NSString *html = [NSString stringWithContentsOfFile:path1 encoding:NSUTF8StringEncoding error:nil]; [[webView mainFrame]…

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• Change resolution on an image in Cocoa Touch

  - by Oscar

  Hi, i need to change the resolution of an image programmatically. I'm really noobiedoobie at resolutions and Dpi so i'm not sure how to go about it. I need to change the reolution on the camera image to 300Dpi. My idea is to do the calculations in photoshop and then shrink the…

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• Cocoa Sparkle Framework not working

  - by Matt S.

  I have followed the guide posted here and when I run my application the menu button for "Check for updates" is not enabled. It's there, it's just grayed out.

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• Cocoa Interface Builder object initialization

  - by Stanley

  Base on the documentation and sample code that I have gone through, I got an impression that when a class defined in xcode is read into and configured in Interface Builder, an object based on the class is effectively created and stored in an xib or nib file. So the object is…

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• Cocoa : Once and for all, how to really reset the standardUserDefaults

  - by Korion

  I tried using -resetStandardUserDefaults, I tried removing the plist file, none of those really do what I need. I want to reset my preferences completely, as if the app re-installed. Is there a good solution to this? I tried : NSString *appDomain = [[NSBundle mainBundle]…

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• get the position of icons on the Desktop (cocoa OSX)

  - by OmidH

  Hi, I would like to know how to read the position on an icon on the desktop in OSX? Or how do I get a list of all icons on the desktop + position. Thanks in advance, Omid

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