objective-c

Objective C write to Remote URL

Ok, so I have the correct username / pass for a remote host, and I have a NSURL Object referring to the file on the server. How can I possibly write data to that server via Objective-C? I cannot find anyone with this problem, so you help would be greatly appreciated! ...

Objective-C blocks as properties. Am I crazy?

Is that possible? ...

UITabBar with count indicator

Is it possible to show a count indicator on top of a tab bar item? How? The application has several tabs, and in some of them there might be updated information. I'm looking for a way to make the user notice when there is something new in one of the tabs... I'm thinking of a round count indicator as is shown on top of the application i...

NSTableView leak

I wrote a very simple to-do-list program(it only has 3 methods). Then I did a Build&Analyze to make sure everything checked out. When I used the Leaks performance tool it told me I had a leak. I couldn't figure out where the leak was coming from so i commented out ALL of my code and still had a leak. So for a test I made a NEW cocoa proj...

Keeping cookie on the iPhone after login via HTTP POST- mixing C++ and Objective C

Hi All I have been working using openFrameworks, on a problem that is posted on the forum: www.openframeworks.cc/forum/viewtopic.php?f=8&t=4765 Essentially, I have used an an set of files, ofxHttpUtils, which uses poco to post to web forms. The example code I have used is at: github.com/arturoc/ofxHttpUtils/blob/gh-pages/example/src/te...

Compiling objective c on Linux

Hi, I am trying to compile the following example from http://www.otierney.net/objective-c.html. It consists of three files: Fraction.h #import @interface Fraction: NSObject { int numerator; int denominator; } -(void) print; -(void) setNumerator; -(void) setDenominator; -(int) numerator; -(int) denominator; @end F...

Raw Data or Pre-Calculated Values in Database?

In general, is it better to store raw data with pre-calculated values in the database and concentrate on keeping the database up-to-date if I remove or delete a row while using the pre-calculated values for display to the user OR is it better to store the raw data and calculate the correct display values on-the-fly? An example (whic...

subclassed NSManagedObject does not call description when NSLog'd

I have a data model which has two entities in a relationship of one to many. Each entity has a class that is subclassed from NSManagedObject. I get the relation set for the one entity and walk it casting each set member to the specific subclass as I enumerate the collection. When I do NSLog(@"My Entity: %@", myEntityInstance); It ...

What would be a proper way to initialize a instance variable in Objective C without leaking memory?

I have a class like this: @interface MyCollection : NSObject { NSMutableDictionary *data; } and in the implementation of it, I have a method to init it like this: - (id) init { if(self = [super init]) { self.data = [[NSMutableDictionary alloc] init]; } return self; } Now when I create a object of this ...

Wavefront OBJ: Converting from Objective-C string to C struct apparently incorrect

I'm writing a Wavefront object loader for work because I don't feel comfortable using code I don't understand in professional projects. After the obvious first step, sorting out which parts are which, I'm attempting to load and log vertices. First and foremost, I wrote a C struct to hold the values. struct Vertice { float x; flo...

Cocoa Grandfather

Is it possible to access the super class method of an objects super class (or grandfather)? For instance: GrandFatherObject : NSObject SuperObject : GrandFatherObject SelfObject : SuperObject From SelfObject: - (void)overriddenMethod { // For Self someCode(); // For Parent [super overriddenMethod]; // For GrandParent ?...

comparing string to an NSMutable array.

hi all, another quick question. how to compare an string with the values of an array for example string a =@"abc"; compare = [[NSMutableArray arrayWithObjects:@"a",@"b",@"abc",@"d",nil]]; if string matches any of the element in array, i should show some alert or something. regards ...

Compiling the objective C library

Hi! This is my first time posting here. I'm a comp sci student attempting to do some things that might be a little over my head: I'm attempting to add some logging to the object_cxxDestruct function within the objective c library (objc4-437.1 specifically). I've tried subclassing dealloc, but things like NSAutoReleasePools seem to fall t...

What is the Proper way to create new to-many relationship in CoreData?

I have an entity called "Client," and each Client can have multiple "Properties." CoreData creates methods on the Client class for me for adding a new Property to the set, but I don't understand the purpose of this. Is there any difference at all between: Property *newProperty = [NSEntityDescription insertNewObjectForEntityForName:@"Pro...

Implement Swipe and Tap together in a UIView

I want my UIImageView to detect both Tap and Swipe gesture. I've coded the touchesBegan method for Swipe detection, I just want to knw how can i make my ImageView detect both the gestures. how to code the touchesBegan so that it can handle both of them?? - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { if ([touches c...

Is there a legitimate, automated, method for deploying Java applications on iOS4?

I'm wondering if there is a standard method for deploying applications originally written in Java, to iOS4 devices. I assume that the application in original format cannot be deployed - is there perhaps an emulation layer that I can use, or a stable compiler that compiles Java to ObjectiveC? ...

How to show a view from scrollview

Hi everybody! I have a view that contains a ScrollView opening two xibs. There is a button on a Xib contained in ScrollView. I want that after clicking the button, open a new view outside of the ScrollView. But I can not open a new view outside the Scrollview. = / Any suggestions? Thanks. ...

ipad page swipe

Is there a standard way to register either left or right swipes of the page and respond accordingly? ...

reading data from memory in C from within an Objective C class

I would like to know if it is possible to read and write data from and to memory with ANSI C code instead of from a file. I have C code that is called from within an Objective C class many times and each time, it has to read in the same large binary file, do some processing on it, and then write out a large binary file (which is slightl...

How to call a variable in a object Objective-C

Hi, i have 2 class: main.m second.m. If i have in main.m - (void)ok { NSString *myString = @"OK!"; return myString; } How to call myString or "-(void) ok" function from second.m? Thanks. ...