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 = [[UIButton buttonWithType:UIButtonTypeRoundedRect] retain]; CGRect frame = CGRectMake(x, y, cardWidth, cardHeight); button.frame = frame; [button setBackgroundImage:backImage forState:UIControlStateNormal]; However, the button I get with that approach doesn’t … Read more
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 and align centre to the image view. In other words, I want the image to: Scale down to fit the aspect, if the image is large. … Read more
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. We don’t allow questions seeking recommendations for books, tools, software libraries, and more. You can edit the question so it can be answered with facts and citations. Closed 4 years ago. Improve this question One of Xcode 5’s new features … Read more
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 [self view] but I was wondering if there is a reverse reference? 29 Answers 29
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 add a bunch of little stuff to click on inside that subview. We are only using the subview to take advantage of the new frame ( … Read more
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 { [test characterAtIndex:6]; } @catch (NSException * e) { NSLog(@”Exception: %@”, e); } @finally { NSLog(@”finally”); } 3 Answers 3
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 loop each time I remove an object? Thanks, Edit: Just to clarify – I was looking for the best way, e.g. something more elegant than manually … Read more
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 of bool %d”, sizeof(bool)); Good to see that both logs display “1” (sometimes in C++ bool is an int and its sizeof is 4) So I … Read more
