Remove UIColor CGColor - KVC warning

Question

How to remove [[UIColor grayColor] CGColor] stupid warning?

[self setValue:
     [[UIColor grayColor] CGColor] 
          forKeyPath:[NSString stringWithFormat:@"_View_%@%d.layer.borderColor", 
              i>=10?@"":@"0", i]];

Incompatible pointer types sending 'CGColorRef' (aka 'struct CGColor *') to parameter of type 'id'

thanks.

-1 without comment. You are cool man! – elp Nov 27 '12 at 12:18 — elp, Nov 27 '12 at 12:18
+1 with comment: first search hit answered my question :-)= – virtualnobi Dec 12 '12 at 10:44 — virtualnobi, Dec 12 '12 at 10:44

score 2 · Accepted Answer · answered Nov 27 '12 at 11:52

2

cast CGColor to id type:

[self setValue:
     (id)[[UIColor grayColor] CGColor] 
          forKeyPath:[NSString stringWithFormat:@"_View_%@%d.layer.borderColor", 
              i>=10?@"":@"0", i]];

answered Nov 27 '12 at 11:52

Oladya Kane

877
7
9

Works, but it's strange because if I use `id color = [[UIColor grayColor] CGColor];` warning remain the same... – elp Nov 27 '12 at 11:54
cast it (as he said) :: the problem is that CGColorRef isnt really an NSObject and thus not compatible (with arc for example. it doesnt know retain/release/isEqual ...) -- for methods that accept that know this, this isnt a problem so above code is save – Daij-Djan Nov 27 '12 at 12:13

score 0 · Answer 2 · answered Jun 16 '13 at 12:24

0

This will perform same as above code.

[self setValue:
 (id)[[UIColor grayColor] CGColor] 
      forKeyPath:[NSString stringWithFormat:@"_View_%02d.layer.borderColor", i]];

answered Jun 16 '13 at 12:24

Rahul Singh

101
5

Remove UIColor CGColor - KVC warning

2 Answers2