Hi guys, Im using XCode 4 and working with CoreData. Now, how do I generate classes for entities? I used to do it in XCode 3 by clicking on a diagram entity, going to File->New and choosing NSManagedObject class. For some reason i cant seem to find it in XCode 4, it's not showing up in the dialog... ...
I have an NSDictionary, with six objects, and the keys a, b, c... etc. What I am doing is removing three objects by their keys, and I don't know what objects are going to be removed, as they are determined by user input, so I could be left with a, d, and e. If this was an array, I could just access the ones left over by using objectAtInd...
Is there a way to have multiple loop variables in a for statement? Here would be a hypothetical representation of what I'm talking about: for (NSString *foo in bar; NSString *bob in example) {} If not what is a good way to accomplish this? Thanks, Kolin ...
I'm writing an iPhone app, and I want to handle multitouches. I'm using cocos2d libs. So I've made a CCLayer subclass and set it to be a CCStandartTouchDelegate. For some reason I don't want to use UIGestureRecognizer and to build a correct logic I should know the answers for these questions: If I tap the screen with one finger, and th...
I am an iOS developer and I found a great library that handles all kinds of astronomy related calculations for me. The problem is that it's written in Java. Although I have enough experience with languages close to Java, I can't run Java on iOS. I'd like to port it, but being that I've never ported anything before. Like I said, I don't ...
Hello all! I got an schedule in an plist-file, reading the events (read: times) is not the problem. The problem is comparing the events with the current time. I am somewhat new to iPhone-development so it might be an easy answer for this but here it goes: scheduleTime isEqualToString currentTime - well that does the trick almost... What ...
How can i remove an ImageView added on a dynamically created UIView, so that i can add another ImageView on my UIView. ...
I have an NSViewController with its own nib that requires access to the managedObjectContext to display objects in a tableview. This is how I have the managed object context set up in my view controller: @interface { ... NSManagedObjectContext* managedObjectContext; ... } @property (nonatomic, retain) NSManagedObjectContext...
Guys: It is really a stupid question, but I really don't know how to. I have a utility class and need to define some pre-defined variables. Here's how my class looks. #pragma mark File header part definiation (start offset, length) NSRange HEADER_VERSION = NSMakeRange(0, 4); /* 0,4 */ NSRange HEADER_IDENTIFIER = NSMakeRange(4, 18); /*...
Hi all, I am implementing MAPKit Based application, In that I had a problem with the pins display. Some times they are coming on top of the callOut view. I used the following code to send the pins back, - (void)mapView:(MKMapView *)mapView didAddAnnotationViews:(NSArray *)views { for (MKAnnotationView* annotationView in view...
Hi folks, accordingly to some UIColor values from within a scroll views context I want to change the pixels rgb values for several UIImages I want to overlay afterwards. At least I have 4 images I'd like to overlay, a background image which is static and 3 layer images whose pixels information I'd like to change before overlaying all tog...
How can i get the computer's name in objective-c on a mac. I'm talking about the same name as the one you can find in System Profiler under software. ...
I discovered an odd scenario that produces a compiler warning in XCode that I don't believe is a valid warning. As an example I created two classes, ClassA & ClassB, that both have an init method called -initWithSomething: One takes an (NSDate *) as the "something" and the other takes (NSString *) Class A // ClassA.h #import <Foundati...
I have a data model which is similar to this: (in another project) ________________________________ _______________________ | | | | | Graph | | DetailedGraph | | GraphListener lstnr ...
Say I have a function like this: -(void)activateDict:(NSNumber*)dictID{ } Then I add a action for my button: [aBtn addTarget:self action:@selector(activateDict) forControlEvents:UIControlEventTouchUpInside]; There is a parameter in the activateDict function, which is (NSNumber*)dictID, so when I add the action to button, how can ...
I'd like to have a settings view in my app. I want to have things like UILabels, UISwitches etc. (Like in the Settings app.) How can I go about doing that? Can I just replace the detailView with the required view, or is there more to it then that? That may not work because I need to be able to set and get text values too. ...
Possible Duplicate: Objective-C properties: atomic vs nonatomic By default all properties in Objective-C are atomic. If I need nonatomic I have to declare it. But I wonder why should I ever use nonatomic? Even if my applications are not multi threaded, atomic seems like the way to do it. What are the advantages of nonatomic? ...
Hey guys, I have some questions about the Accelerate.framework. I am trying to do some vector stuff. First of all what is the difference between Single Precision Float, Single-Precision Complex, Double-Precision Float, and Double-Precision Complex? And what should I be using for my own struct defined like float x; float y; float z; And ...
I want to put in a timeout in case it takes too long to find my location, send out the relevant url, and parse the xml. It worked when I used performSelector:withObject:afterDelay in the locationManager (just to test getting the xml), but when I put similar code around my parser it doesn't actually abort the parsing. I am testing this by...
Basically I have this scenario going on: //in interface header @property(nonatomic,retain)OtherClass *otherClass; //implementation - (id)initWithOtherClassInstance:(OtherClass*)otherClass { if (self != [super init]) return self; self.otherClass = otherClass; return self; } - (void)dealloc { //Do I need...