Adding UIButton to subview not working - ios

Question

I'm trying to add 16 UIButton in code to a subview of my main view:
internView = [[UIView alloc] initWithFrame:CGRectMake(16, 16, (self.view.frame.size.width - 16), (self.view.frame.size.height - 16) - 60)];
internView.backgroundColor = [UIColor whiteColor];
for (int rij = 0; rij < 4; rij++) //4 rows
{
for (int kolom = 0; kolom < 4; kolom++) //4 colomns
{
CGFloat x = (((width + spacing) * kolom) + spacing);
CGFloat y = (((height + spacing) * rij) + spacing);
int tag = ((4 * rij) + kolom);
UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(x, y, width, height)];
button = [UIButton buttonWithType:UIButtonTypeCustom];
button.backgroundColor = [UIColor blackColor];
[button setImage:[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:[[projects objectAtIndex:tag]thumbnailImage]]]] forState:UIControlStateNormal];
[button addTarget:self action:#selector(getDetail:) forControlEvents:UIControlStateNormal];
button.tag = tag;
NSLog(#"%i",button.tag);
[internView addSubview:button];
}
}
[self.view addSubview:internView];
The subview 'internview' is visible (as i made it white background) on the main view but the buttons aren't visible.
Also my log shows the tag of the button which goes from 0..15, so I know they are being made but simple aren't added to the subview 'internview'
Can't really see what I'm missing or doing wrong here..

Answer 1

Change your code to :
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(x, y, width, height);
In your version you have:
Memory leak because you have created buttons two times
[UIButton buttonWithType:UIButtonTypeCustom]; returns new button
with CGRectZero frame