Lets say I make an App that enables users to make short notes and write things down. Is there Core Data on iPhone OS too? Or how else would you save that data in iPhone? ...
Is there any way to find out the .icns file an IconRef refers to or has been loaded from? Or even the id of the containing bundle if there is one? I understand that not all icons are loaded directly from a file (composite icons for example) so this wouldn't work all the time. The question I'm trying to answer is "Where does the icon th...
I'm working on an iPhone app that we're localizing in both English and Japanese for our initial release. We frequently call NSLocalizedString() to load the appropriate localized string for display. Is it generally better to save the localized strings in instance variables for the next time we need them, or am I micro-optimizing here an...
Sorry if this is a broad question, but other than Objective-C, Cocoa, and OpenGL ES, what technologies or concepts would you suggest I read up on before writing a game for the iPhone? I'm a beginning game developer and need all the help I can get :) ...
I am having a problem with a Core Data model in Cocoa. It's probably a fairly basic problem. A section of my Core Data model is shown below. Given the value of a cell property in the OutputCell entity, I want to return the relevant HistogramBar. I'm using the following Predicate but it just returns an empty array. I've managed to ge...
I want to add some marks to separate some strings. How to add a char to a string? e.g. add '\x01' to "Hello", add '\x02' before "World" and add '\x03' after "World". So I can create a string "\x01 Hello \x02 World \x03" which has some separate marks. ...
I have the following method -(NSMutableArray *) getPaises { NSMutableArray * paises; paises = [[NSMutableArray alloc] init]; while( get new row ) { NSString *aPais = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 0)]; [paises addObject:aPais]; } return paises; }...
I'm going back over some crufty code to tidy it up and I see I've been retaining NSTimers returned from scheduledTimerWithTimeInterval:target:selector:userInfo:repeats: and storing them in a field - then releasing and nulling the field when it fires. In some cases I use the timer to send an invalidate message to it later - but in many ca...
Hi all, I have a simple method in my code which looks like the following: - (BOOL)isFirstTimeLogin { NSString *t_gName = [NSString stringWithFormat:@"%@", [[NSUserDefaults standardUserDefaults] objectForKey:kGroupIdentifierKey]]; if ([t_gName isEqualToString:@""] || t_gName == nil) { DLog(@"LoginViewController, m:::isFi...
So, I saw this: error:(NSError **)error in the apple doc's. Why two stars? What is the significance? ...
When I display an NSAlert like this, I get the response straight away: int response; NSAlert *alert = [NSAlert alertWithMessageText:... ...]; response = [alert runModal]; The problem is that this is application-modal and my application is document based. I display the alert in the current document's window by using sheets, like this: ...
I've figured out how to use the NSBezierPath class to draw shapes in the drawRect function of my custom view class, however I can't seem to figure out how to draw text. The following code is what I have so far for drawing the text (located in the drawRect function): NSText *text = [NSText new]; [text setTextColor: [NSColor yellowColor]]...
I have created a subclass of NSView to draw an image as a pattern: @interface CePatternView : NSView { NSImage* image; id observableObjectForImage; NSString* keyPathForImage; } @end I implemented the following to expose bindings: + (void)initialize { // Expose the "image" binding to IB. [self exposeBinding:@"i...
Hi, Is there any way to bundle a certificate in my application - and then use that to perform HTTP GET/POST using a NSURLRequest? I.e. the certificate should not be used for other HTTP traffic on the device, only by my application. Cheers ...
First off; I'm a COMPLETE newbie at Cocoa, so please bare with me for asking what I am sure is an inane and utter newbish question. My situation is as follows: I want to expand on the functionality of NSTextField. AMong the things I want to achieve is: Changing the look and feel of the caret. Detecting when the text reaches a certain...
I have some code in my application that looks something like this: char *hash = (char*) sqlite3_column_text(get_bookmark, 0); NSString* postHash = [NSString stringWithUTF8String:hash]; This works for me every time; I've never seen it not work. Most of my users do not experience problems (as far as I know). However I find that postHash...
Developing a mac app, how can I tell whether the user is currently at their computer or not? Or how long ago they last pressed a key or moved the mouse? ...
Using Objective-C/Cocoa how do you calculate the width and height required to draw a string based on a particular font? In C#/.Net you can do it like this: SizeF textSize = graphics.MeasureString(someString, someFont); Is there something like that available in Objective-C/Cocoa? ...
Google gave me: http://developer.apple.com/samplecode/LoginItemsAE/index.html And I figured there must be a better way than using AppleScript Events. So I downloaded the Growl sources. They use the exact sources from that Apple developer article. Is there a better way? (I refer to Login Items in Accounts in System Preferences, ie. ma...
I am talking about the navigation area on the left side of iTunes for Library and Playlists. I'm wondering if this is a built in class (which I couldn't find documented) or something custom implemented by Apple. I'm working an a mac application where I want to include that type of navigation. I want to allow people to "fold" the catego...