Unable to call an Objective C method from a C function

Unable to call an Objective C method from a C function

I am using MVC architecture for a GUI application. The model class has some C functions. One of the C functions calls some methods of Objective-C class. I call those methods using an object of that c…


objective c - How do you test an asynchronous method?

I have an object that fetches XML or JSON over a network. Once this fetching is complete it calls a selector, passing in the returned data. So, for example I'd have something like:-(void)testRespons…


iphone - UITableView scrolling crashes App

Preface: I am new to the iPhone SDK, Obj-C, Interface Builder and Cocoa. I'm likely doing something obviously wrong. Question: I have a UITableView which crashes if I scroll it. It will scroll a litt…


How to pass values by reference in objective C(iphone)

I have a very basic question. I'm a new iPhone programmer. My question is can anybody tell me how can I pass values by reference to a function in obj. C? I know how to do it in VB and C#. But don't k…


Length of an Array in Objective C

I haven't found answer in any of the questions asked. I am passing an Integer Array to a function.Now I want to traverse through the array.But as things worked in C,C++ by simple using arrayname.leng…


objective c - Handling NSError when reading from file?

I am just curious if I am doing this right. NSString*fileContents; NSError*fileError=nil; fileContents=[[NSString stringWithContentsOfFile:fileOnDisk encoding:NSM…



objective c - How to check if NSString is numeric or not

Possible Duplicate: iphone how to check that a string is numeric only I have one NSString, then i want check the string is number or not. I mean NSString*[email protected]"5555";if(val isNumber){ ret…


objective c - Objective-C Multiple Initialisers

I have a simple question about creating multiple initialisers within an objective-c class. Basically I have a class that represents a single row in my database(users). I currently have an initialiser…


Objective C General Print

Does objective C have a general print command like Python? NSLog seems to log it rather than print out to console. printf only accepts specific types.…


iphone - UITableView dataSource must return a cell from tableView:cellForRowAtIndexPath: Exception

i actually dont see my error:-(UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath{static NSString*[email protected]"Cell"; FriendTableViewCe…




swift objective uitableviewcell uitableview cell from cellforrowatindexpath data indexpath get