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I have an NSManagedObject, where one of the relationships is a 'too many' relationship. I want to search through every NSManagedObject in this relationship and see if any of them contain a name which is equal to @"whatever". What's the easiest way to do this?
Hi,
I am trying to create a AVAudioPlayer in my AppDelegate, I am even referring - word for word - from an example from the iOS5 Programming Cookbook (quite a good book generally).
However, I am getting these 4 related Apple Mach-O Linker (Id) Error build errors.
The details look like this:
Code:
Undefined symbols for architecture i386:
"_OBJC_CLASS_$_AVAudioSession", referenced from:
objc-class-ref in AppDelegate.o
"_OBJC_CLASS_$_AVAudioPlayer", referenced from:
objc-class-ref in AppDelegate.o
"_AVAudioSessionCategoryPlayback", referenced from:
___57-[AppDelegate application:didFinishLaunchingWithOptions:]_block_invoke_0
right now im stuck because I want my action to display correct if the string in the text field=the correct answer but how would i define all other values that are not the desired answer so I can diisplay incorrect.????? would be the area i would define all variables not = to the desired.
(IBAction)pushGuess: (id)sender { if (textField1.text= [NSString stringWithFormat:@"Michael Douglas", @"michael douglas"] , [textField1 text]) {correct1.text=@"correct";} if(textField1.text= [NSString stringWithFormat:@"???????"]){correct1.text=@"Incorrect";
Along with that when I run my application if i do end up putting a value not desired or incorrect it automatically fixes that string to be the correct one?how do I fix that.
So I'm fairly new to Xcode, I've basically been using code from tutorials and the majority of my work has been storyboarding. Im trying to create a photo gallery of around 50 pictures in my resources folder. The tutorials out there only show how it can be done with the iPhone Photo Library, but I'm trying to create a gallery of images with images I've inputted into the app. Anyone know of a way I could do this, please be informative as I do not have much experience.
I'm looking to learn Objective-C and how to program iphone apps, willing to invest a couple hours a day to learn the programming, but currently have no knowledge of the language whatsoever. I'm pretty good with HTML and CSS(not an expert by any means but I can make a basic-looking website) -- not sure if that's going to help me at all.
Now I plan on exhausting my resources on the web, looking for all the tutorials and websites I can find and figured I ought to find a good book to purchase on Objective C itself. My only concern and question before I go spending money is, throughout my learning process, is there anything I will have to do differently if I don't own a Mac? I'm trying to learn on a PC, so are there different books I should purchase/websites I should visit that break it down in ways to learn on a PC as opposed to a Mac? Or does it really not make a difference?
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