IT Nursery
I have a rectangle image (jpg) and want to use it to fill the background of a button with rounded corner in xcode. I wrote the following: UIButton *button...
I have an image view, declared programmatically, and I am setting its image, also programmatically. However, I find myself unable to set the image to both fit the aspect...
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Is there a built-in way to get from a UIView to its UIViewController? I know you can get from UIViewController to its UIView via...
Let’s say we have a view controller with one sub view. the subview takes up the center of the screen with 100 px margins on all sides. We then...
Why doesn’t @try block work? It crashed the app, but it was supposed to be caught by the @try block. NSString* test = [NSString stringWithString:@"ss"]; @try {...
I have a URL string (NSString) with spaces and & characters. How do I url encode the entire string (including the & ampersand character and spaces)? 24 Answers 24
In Cocoa, if I want to loop through an NSMutableArray and remove multiple objects that fit a certain criteria, what’s the best way to do this without restarting the...
I want to check if the app is running in the background. In: locationManagerDidUpdateLocation { if(app is runing in background){ do this } } 8 Answers 8
I saw the “new type” BOOL (YES, NO). I read that this type is almost like a char. For testing I did : NSLog(@"Size of BOOL %d", sizeof(BOOL)); NSLog(@"Size...