In Java, it would look like this: class Foo { float[] array; } Foo instance = new Foo(); instance.array = new float[10]; ...
I'm teaching myself Objective-C from a book (Cocoa programming for mac OS X) and am about halfway through however I have two questions that aren't answered or defined in the book. When defining class methods what is the difference between (assuming there in a .h file): - (int) population; + (int) population; The way I see it at the...
I have Used in cocos2d game engine. this is my code: -(void)timed1: (id)sender { UIAlertView *dialog = [[[UIAlertView alloc] init] retain]; [dialog setDelegate:self]; [dialog setTitle:@"Enter Time:"]; [dialog setMessage:@" "]; UITextField *nameField = [[UITextField alloc] initWithFrame:CGRectMake(20.0, 45.0, 245.0, 2...
Hi! I'm trying to do that for a couple of days now, and after reading tons of messages of people trying to do that too, I'm still unable to have a fully working UITextField in some of my UITableViewCells, just like in this example: http://img231.imageshack.us/img231/4858/picture4za3.png Either I have the form working but the text is ...
I'm trying to write a program that uses sockets to connect with other instances of itself over the network. Since eventually I'd like to write a Windows version as well, I'm currently using BSD sockets on the OS X side so that I can ensure that it will be compatible with the (eventual) Windows version. The only way that I've been able t...
Here is my setup. In my application delegate, I have a property called currentFoo. The currentFoo property is set to the currently selected Foo instance. The Foo instances each have a property which is a NSMutableArray called results. The objects in results can be of various types, NSNumber, NSString, etc... I have an NSTableView that...
I'm an Objective-C developer porting an application to the .Net world. In my Obj-C application, I use NSNotification objects to communicate asynchronously between a handful of objects. Is there some way to do something similar in the .Net world (more specifically, using the C# language)? The fundamental approach is that one object posts ...
How can I go about creating a UITableView with taller cells? Basically, I want to create a full screen table with only four cells, but they should take up the entire screen (1/4 each). Assuming this is possible using a UITableView, can it be done both in code and in Interface Builder? And also, can each cell have its own height? --Tim ...
Or to reformulate the question: is there a performance penalty in using unsigned values? And in general: what is the most performant type (16bit signed?, 32bit signed? etc.) on the IPhone ARM processor? ...
I'm converting an algorithm I wrote in Java to Objective-C. In java the BigDecimal class handles base-10 numbers and can take the primitive double as a constructor arg. In Cocoa's NSDecimalNumber class, however, there is no direct way to construct an instance using a primitive double. Currently I'm using this (smelly) hack: [NSDe...
My iphone app has several text fields. The "Did End on Exit" event on each text field calls a single action. How can I tell which text field called the action? Can I detect this from the sender object which is passed to the action? ...
I'm trying to compile GNUstep on a linux box but gnustep-gui-0.16.0 package is failing. I downloaded GNUstep Startup stable 0.20.1 (http://wwwmain.gnustep.org/resources/downloads.php)and follow instructions about how to compile (./configure && make). I'm getting this error: libgnustep-gui.so: undefined reference to 'png_sizeof' I have ...
Hi How can I execute a terminal command (like grep) from my Objective-C Cocoa application? Thanks. ...
I'm trying to mimic the following Java code: int[][] multi; // DIMENSIONS ARE UNKNOWN AT CREATION TIME // LATER ON... multi = new int[10][]; multi[5] = new int[20]; multi[5][11] = 66; // LATER ON... multi = null; // PROPER WAY OF FREEING EVERYTHING I've came out with the following Objective-C version: int* *multi; // multi = malloc(1...
(iPhone question) My code looks like this NSNumber *inputToNumber = [NSNumber numberWithFloat:[textField.text floatValue]]; the value from the textfield is actually a telephone number. It's stored in NSNumber as an annoying (2.0)78966e+08 How can I just get NSNumber to store it as 0207896608? Thanks dan ...
Hello! I want to cache the instances of a certain class. The class keeps a dictionary of all its instances and when somebody requests a new instance, the class tries to satisfy the request from the cache first. There is a small problem with memory management though: The dictionary cache retains the inserted objects, so that they never ge...
I am trying to develop a application by using cocos2d. I can't getting value from textfield . How can get the value of text firld (in a alart view) by using COCOS2D ? -(void)timed1: (id)sender { UIAlertView* dialog = [[[UIAlertView alloc] init] retain]; [dialog setDelegate:self]; [dialog setTitle:@"Enter Time:"...
Does the iPhone support garbage collection? If it does, then what are the alternate ways to perform the operations that are performaed using +alloc and -init combination: NSXMLParser *xmlParser = [[NSXMLParser alloc] initWithData:xmlData]; UIImage *originalImage = [[UIImage alloc] initWithData:data]; detailViewController = [[[DetailView...
I have a button that correctly wired such that when it is clicked, the "login" IBAction is hit. - (IBAction) login: (id)sender { NSLog(@"OK"); } Now, I wired the button to the username/password text fields using "takeStringValueFrom" but I don't understand how to then get at those values? Hope that makes sense. EDIT: so basica...
I believe i can learn thing or two if i can see the implementation files (.m files). Is there any way the i can view NSString.m or NSNumber.m files? and others? If i try to find these files using spotlight, i get nothing. ...