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• Objective-C Pointer to class that implements a protocol

  - by Winder

  I have three classes which implement the same protocol, and have the same parent class which doesn't implement the protocol. Normally I would have the protocol as pure virtual functions in the parent class but I couldn't find an Objective-C way to do that. How can I utilize polymorphism on these subclasses and call the functions implemented in…

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• Adding C++ Object to Objective-C Class

  - by Winder

  I'm trying to mix C++ and Objective-C, I've made it most of the way but would like to have a single interface class between the Objective-C and C++ code. Therefore I would like to have a persistent C++ object in the ViewController interface. This fails by forbidding the declaration of 'myCppFile' with no type: #import <UIKit/UIKit.h>…

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• socket programming in objective c [closed]

  - by greshi

  will you plz help me to perform socket programming in objective c..

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• Wishlist for Objective-C IDE/Xcode ?

  - by Null Pointer

  My company is evaluating the possibility of developing set of tools for Objective-C extending Xcode default functionality(basically we are thinking about providing better navigation,semantic search, more refactorings, quick fixes, improved code completion (visual assist inspired). So we would like to ask XCode/Objective-C developers: Do…

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• what are alternatives to throwing exceptions in objective c

  - by malik

  Hi, Google Coding Standard for Objective C says we should not throw exceptions, what are the alternatives to @throw then?

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• how to build an web app in iphone using objective c

  - by Rakesh kumar

  how to build an web app in iphone using objective c.

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• Debugging Objective C JNI code

  - by thatidiotguy

  Here is the situation: I have a client's java project open in eclipse. It uses a JNI library created by an Xcode Objective C project. Is there any good way for me to debug the C code from eclipse when I execute the Java code? Obviously eclipse's default debugger cannot step into the jni library file and we lose the thread (thread meaning…

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• Use C++ with Objective-C in XCode

  - by prosseek

  I want to use/reuse C++ object with Objective-C. I have a hello.h that has the class definition, and hello.cpp for class implementation. class Hello { int getX() ... }; And I use this class in Objective-C function. #include "hello.h" ... - (IBAction) adderTwo:(id)sender { Hello *hi = new Hello(); int value =…

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• double checked locking - objective c

  - by bandejapaisa

  I realised double checked locking is flawed in java due to the memory model, but that is usually associated with the singleton pattern and optimizing the creation of the singleton. What about under this case in objective-c: I have a boolean flag to determine if my application is streaming data or not. I have 3 methods,…

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• how to extract only the 1st 2 bytes of NSString in Objective-C for iPhone programming

  - by suse

  Hello, 1) How to read the data from read stream in Objective-C, Below code would give me how many bytes are read from stream, but how to know what data is read from stream? CFIndex cf = CFReadStreameRead(Stream, buffer, length); 2) How to extract only the 1st 2bytes of NSString in Objective-C in iPhone programming.…

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• XCode 3.2 - can't create Objective-C class

  - by Urizen

  My installation of XCode 3.2 has begun to exhibit some strange behaviour. When I try to add a basic Objective-C classs (inheriting from NSObject), in my iPhone project, I get the following popup: "Alert. Couldn't load the next page". The above-mentioned error happens at the point of trying to create the file (i.e.…

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• Sorting an array of Objective-c objects

  - by davbryn

  So I have a custom class Foo that has a number of members: @interface Foo : NSObject { NSString *title; BOOL taken; NSDate *dateCreated; } And in another class I have an NSMutableArray containing a list of these objects. I would very much like to sort this array based on the dateCreated property;…

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• Importing Swift classes within a Objective-C Framework

  - by theMonster

  I have a custom Framework that has a bunch of Objective-C Classes. Within the Framework, I'd like to add more classes using Swift. However, when trying to expose the Swift classes to the Objective-C code using: MyProduct-Swift.h, it comes up as "MyProduct-Swift.h file not found". I've tried this in a single view…

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• Frustrated with Objective-c code...

  - by Moshe

  Well, I've started with iPod/iPhone programming using Head First iPhone Development (O'reilly) and I'm typing code out of the book. There are two problems, one is programming related and the other is not. I don't understand the format of objective-c methods. I'm getting an few errors now, based on source code…

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• Objective-C to Java cross compiler

  - by mvid

  It is clear that cross compilers will not be allowed by the Apple App Store, so a developer will need to be familiar with Objective-C to create applications for the iPhone. I was wondering, is there a cross compiler that will take Objective-C application code and rebuild it into a similar Java application that…

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• objective-c default init method for class?

  - by Alex

  Hello, I have two differing methods for initializing my objective-c class. One is the default, and one takes a configuration parameter. Now, I'm pretty green when it comes to objective-c, but I've implemented these methods and I'm wondering if there's a better (more correct/in good style) way to handle…

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• How to get macos Log-in User Name in objective-c

  - by Amit

  please let me know how to get the currently logged in user's name or mac machine name (if possivle) in objective-c. Thanks

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• default value of BOOL in Objective-C?

  - by suse

  Hello , What is the default value of BOOL in Objective-C?

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• How big of a jump will it be to go from C# to Objective C

  - by Nissan Fan

  How hard will it be to transfer from my existing expertise in C# to building apps for the iPad/iPhone in Objective C?

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• iPhone Objective-C/Plain C Memory Management

  - by toc777

  Hi everyone, I understand Objective-C memory management but I'm using Core Graphics functionality such as CGRect, CGPoint, CGImageRef etc.. which is written in plain C. My question is how do i manage this memory or is it already handled for me? According to the Apple documentation if an Apple…

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• How to do pointer work with accessor methods in Objective-C

  - by Jasconius

  Basic problem statement: I have a very good reason for doing some pointer fanciness in an app where I need to pass a decimal by reference. So I have a class which stores many a decimal, so let's say is has a property as such: @property (nonatomic) double myDecimalValue; I want to pass it…

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• Using OpenGL Mathematics (GLM) in an Objective-C program

  - by user1621592

  i am trying to use GLM to load a .obj object in my Objective-C Program (Xcode 4.4 Mac Os X). I have added the glm folder to my project. i try to import it using #import "glm/glm.hpp", but the program doesn't build. some of the errors are the following: (this errors are produced in the GLM…

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• How to make a file invisible in Finder using objective-c

  - by AmitSri

  I need to hide the file in finder as well as in spotlight if possible using objective-c or using C calls. Thanks

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• How to dynamically instantiate a class in Objective-C

  - by suse

  Can I know how to dynamically instantiate a class in Objective-C?

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• How different is Objective-C from C++?

  - by Alerty

  What are the main differences between Objective-C and C++ in terms of the syntax, features, paradigms, frameworks and libraries?

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