Collection element of type 'CGSize' is not an Objective-C object

cgsize, core-graphics, nsdictionary, objective-c

Solution

`CGSize` is not an object. It's a C struct. If you need to store this in an obj-c collection the standard way is by wrapping it in `NSValue`, like so:

NSArray *rows = @[
 @{@"size" : [NSValue valueWithCGSize:(CGSize){self.view.bounds.size.width, 100}]
  }
];

Then later when you need to get the `CGSize` back, you just call the `-CGSizeValue` method, e.g.

CGSize size = [rows[0][@"size"] CGSizeValue];

Problem

I'm trying a give a NSDictionary key value a CGSize, and XCode is giving me this error. My code: ``` NSArray *rows = @[ @{@"size" : (CGSize){self.view.bounds.size.width, 100} } ]; ``` Why am I getting an error here? If its impossible to store a CGSize in a dict, then what's an alternative approach? EDIT: now getting "Used type 'CGSize' (aka 'struct CGSize') where arithmetic, pointer, or vector type is required" error with this code: ``` NSDictionary *row = rows[@0]; CGSize rowSize = [row[@"size"] CGSizeValue] ? : (CGSize){self.view.bounds.size.width, 80}; ```

Original source