How would I declare a class that has a method/message that takes a selector, stores the value of the selector, and then calls the selector later on? ie if its called SomeObject it would be called like this: -(id) init { // normal stuff here o = [[SomeObject alloc] init]; return self; } -(void) checkSomething { [o check...
I'm seeking further clarification after seeing http://stackoverflow.com/questions/1031715/what-is-responsible-for-releasing-nswindowcontroller-objects I'm writing a simple inventory management application for my nephews. I have a table view that displays the contents of their "library", etc. To add a new item to the library, they clic...
I find myself declaring bunch of class variables and it is really tiring to write simple get/set methods for each variable. So, the question is how to synthesize setters/getter for class variables in objective-c? ...
Hi! I've been doing some cocoa since a week, and I'm getting kinda good with it. I did some tutorials, calculators, currency converter, etc... But I was wondering if there was any more advanced guide? Like build a RSS reader, or anything else... I dunno.. If you know any good resource for examples please tell me. PS: I'm reading som...
I have a custom class called ItemComponent. Another class has an array of them called subComponents. It's a property of the class: ItemComponent *subComponents[0]; Initially, it is set as 0, because not all objects will have sub-components. In the implementation, I have a method to add an ItemComponent to the property. The item is...
I have an app using SQLite3. It's running pretty well, but I would like suggestions on speeding up SQLite (write) access. Most of the database operations are writing triples (int, int, double) of numbers, about 20-50 triples per second. There is an occasional read, but is about as rare as hen's teeth (mostly occurs on loading only). Doe...
hi, i am using radio button image (empty circle) in button to answer the question from 3 options, and the 3 options are radio button's. i have created 3 uibuttons programmatically in tableview delegate method cellforrowatindexpath. i need when one button is selected(with filled circle image) other one if selected before gets unselected. ...
I want to keep a mutable collection of CGImageRefs. Do I need to wrap them in NSValue, and if so how do I wrap and unwrap them properly? Can I get away with using a C array? If so how do I construct it and how do I add elements to it later? Is it significantly more costly to use UIImages instead of CGImageRefs as the elements of the coll...
hi, i want to know how to set the alignment of delegate message of alert view. anyone has solution, plz reply with some code. ...
I have a tableview. I need to add cells of the tableview at a particular interval of time after loading so that we can view loading the cells.How can i do this. Any idea will be greatly appreciated! ...
Does anyone know if it's possible to center my image when using a navigationController. With this I mean the following. When I click on a cell everything is fine ( figure 1 ) figure 1. step 1 img441.imageshack.us/img441/5026/picture5t.png step 2 img70.imageshack.us/img70/3998/picture6a.png I go back and want to click another cell ,...
I'm having trouble with a snippet of code. I'm trying to add an instance of CLLocationCoordinate2D to a NSMutable array using the addObject method, but whenever the line is executed, my app crashes. Is there anything obvious wrong with this code? The crash is on this line: [points addObject:(id)new_coordinate]; Polygon.m: #import "P...
I want to make a player which will play video files from local server and takes command to play stop and ff etc from a socket. I am able to make a player which uses QTKit framework, but when it comes to socket it did not load movie. I run the socket on another thread, and I also initialize QTMovie on the main thread but still it's not w...
hi, i tryed to create a own GUI component with cocos 2d... i haved written a class (extends Sprite) ... this class initialize with graphics and a lable... if I create an instance of my class .. i can see my component but i can user any functions... i wrote a setLabel function .. but the lable change... i create a instance with this cod...
Hello! I have an Objective-C NSMutableDictionary declared inside a class's @interface section, with getter/setter methods, like so: @interface myClass : NSObject { NSMutableDictionary *dict; } - (void) setDict: (NSMutableDictionary *) newDict; - (NSMutableDictionary *) dict; Inside some of my @implementation methods I want to mo...
Hi! I have an UITableView and I want to populate it with data from this page: http://tvgids.mobi/gids/ned1.php I have this code: NSURL *urlll = [NSURL URLWithString:[NSString stringWithFormat:url]]; NSString *test = [NSString stringWithContentsOfURL:urlll]; UIAlertView *av = [[UIAlertView alloc] initWithTitle:@"LOL" message:t...
Hello all , I have a question concerning the following issue. I would like to return to the top of my tableview everytime I press a cell This is a piece of the code that does it. - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { .... ... ... [self.tableView setContentOffset:CGP...
Hi all, I've an NSTableView that uses the controller object for the NIB being displayed as the data source. I implement the NSTableView informal protocol. This NSTableView gets its values from Core Data. I startup the application, load all values I have in XML and then display them. My problem is, the NSTableView doesn't seem to add a...
Any idea why this works: [[[[[self tabBarController] tabBar] items] objectAtIndex:2] setBadgeValue:@"Hello"]; But this doesn't? [[self tabBarItem] setBadgeValue:@"Hello"]; I would rather not have to provide an explicit tab bar index (2 in the code above). Also, is there a way to get the ta...
Hi guys, I'm trying to make a login system for my cocoa app. How would I do this? I know it involves SQL, but I know nothing of SQL. I want the user to register or login. It would be easier if apple had a source code for this kind of thing, but I don't think they do. Best Regards, Kevin ...