Programmatically adding a subview to a pre-defined subview in storyboard not working

Question

I have a ViewController in a storyboard consisting of two UIViews and a table at the bottom. the center of the screen contains a UIView defined in the storyboard with an outlet called middleSectionView. I want to programmatically add a subView to middleSectionView. The programmatically added subView is not appearing. Here's my code:

RoundedRect.m:
#import "RoundedRect.h"

@implementation RoundedRect

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        NSLog(@"RoundedRect: initWithFrame: entering");
        UIView* roundedView = [[UIView alloc] initWithFrame: frame];
        roundedView.layer.cornerRadius = 5.0;
        roundedView.layer.masksToBounds = YES;
        roundedView.layer.backgroundColor = [UIColor redColor].CGColor;

        UIView* shadowView = [[UIView alloc] initWithFrame: frame];
        shadowView.layer.shadowColor = [UIColor blackColor].CGColor;
        shadowView.layer.shadowRadius = 5.0;
        shadowView.layer.shadowOffset = CGSizeMake(3.0, 3.0);
        shadowView.layer.opacity = 1.0;
        // [shadowView addSubview: roundedView];
    }
    return self;
}
@end


.h:
...
@property (strong, nonatomic) IBOutlet UIView *middleSectionView;

.m:
...
#import "RoundedRect.h"
...
- (void)viewDidLoad
{
    RoundedRect *roundRect= [[RoundedRect alloc] init];
    roundRect.layer.masksToBounds = YES;
    roundRect.layer.opaque = NO;
    [self.middleSectionView addSubview:roundRect];    // This is not working
    [self.middleSectionView bringSubviewToFront:roundRect];
    // [self.view addSubview:roundRect];             // This didn't work either
    // [self.view bringSubviewToFront:roundRect];    // so is commented out
    ...
}

Sergey Kalinichenko · Accepted Answer · 2013-03-03 22:32:01Z

2

The reason why you do not see the RoundedRect is that you are calling a wrong initializer: this line

RoundedRect *roundRect= [[RoundedRect alloc] init];

does not invoke the initWithFrame: initializer that does all the work initializing your RoundedRect view. You need to change the call to

RoundedRect *roundRect= [[RoundedRect alloc] initWithFrame:CGRectMake(...)];

and put the desired coordinates of the frame in place of the ... above.

edited Mar 3, 2013 at 22:32

answered Mar 3, 2013 at 19:28

Sergey Kalinichenko

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2 Comments

Barb Over a year ago

Thank you very much for the quick reply! However, I'm still confused on this one. Adding the subview is in viewDidLoad.

Sergey Kalinichenko Over a year ago

@user1509295 You are welcome! If this problem is solved, consider accepting the answer by clicking the grey check mark next to it. This would let others know that you are no longer actively looking for a solution, and earn you a new badge on Stack Overflow.

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