Browsing Questions About objective-c (1)

What's the best way to create an iPhone application that runs in landscape mode from the start, regardless of the position of the device? Both programmatically and using the Interface Builder.

I am looking for an introduction into developing for the iPhone. Any recommendation? I do not speak Objective-C either, so tutorials on that would not hurt either.

I'm just beginning to have a look at Objective-C and Cocoa with a view to playing with the iPhone SDK. I'm reasonably comfortable with C's malloc and free concept, but Cocoa's references counting scheme has me rather confused. I'm told it's very elegant once you understand it, but I'm just not ove…

What are the recommended online or offline resources for Objective-C and Cocoa programming? My online resources: O'Reilly . Some useful articles and examples, but has not been updated for quite a while. Learning Objective-C . This seems like a good resource so far. Late Night Cocoa Pod…

Is it possible to access the iSight camera on a macbook programatically? By this I mean I would like to be able to just grab still frames from the iSight camera on command and then do something with them. If so, is it only accessible using objective c, or could other languages be used as well?

Being new to Objective-C (but a long term C/++) programmer I'm looking for advice/recommendations on naming conventions for variables. My personal preference would be to utilize a prefix for instance variables both for clarity within functions and to prevent shadowing of function parameters. Ho…

Well? I'm slowly learning Objective-C and Cocoa, and the only way I see so far to capture key events in Text Views is to use delegation, but I'm having trouble finding useful documentation and examples on how to implement such a solution. Can anyone point me in the right direction or supply som…

I think the title says it all :) I'm new to Cocoa and while the purpose of many objects is obvious, others are not. For example NSInteger/NSUInteger/NSFloat/NSDouble are all replacements for the regular builtin types. Is there any benefit to using the NS* types over the builtins? Which do yo…

For part of my application I have a need to create an image of a certain view and all of its subviews. To do this I'm creating a context that wraps a bitmap with the same-size as the view, but I'm unsure how to draw the view hierarchy into it. I can draw a single view just be setting the contex…

Using NSURLRequest, I am trying to access a web site that has an expired certificate. When I send the request, my connection:didFailWithError delegate method is invoked with the following info: -1203, NSURLErrorDomain, bad server certificate My searches have only turned up one solution: a hi…

I'm a complete Xcode/Objective-C/Cocoa newbie but I'm learning fast and really starting to enjoy getting to grips with a new language, platform and paradigm. One thing is though, having been using Visual Studio with R# for so long I've kind of been spoiled with the coding tools such as refactor…

I'm learning objective-C and Cocoa. In the Apple tutorial I'm working through there's a side note that says: IBOutlet is a null-defined macro, which the C preprocessor removes at compile time. I'm curious - what's a null-defined macro? Cheers Ben

I'm learning objective-C and Cocoa and have come across this statement: The Cocoa frameworks expect that global string constants rather than string literals are used for dictionary keys, notification and exception names, and some method parameters that take strings. I've only worked in …

I'm learning objective-c and keep bumping into the @ symbol. It is used in different scenarios, for example at the start of a string or to synthesise accessor methods. What's does the @ symbol mean in objective-c?

The Apple Developer Documentation explains that if you place a link in a web page and then click it whilst using Mobile Safari on the iPhone, the Google Maps application that is provided as standard with the iPhone will launch. How can I launch the same Google Maps application with a specific a…