Question

I have a UIView and I initialize it from a nib file.

In my nib file I dragged and dropped a UIImageView and I changed the class name to MyImage.

When i load the view it doesn’t seem like it’s initializing the the image using my custom class, because the init method is not getting called.
Any idea what the problem is?

@interface MyView : UIView
@property (nonatomic, retain) IBOutlet MyImage *image;
@end

@implementation MyView
@synthesize image;

- (id)init
{
   self = [super initWithNibName:@"MyView" bundle:nibBundleOrNil];
   return self;
}
@end

Here is MyImage
Here is my Image

@interface MyImage : UIImageView
@end

@implementation MyImage
- (id)init
{
   // This doesn't get called 
   self = [super init];
   if (self) 
   {
      // do somethin
   }
   return self;
}
@end

Answer 1

The initializer that’s used when loading a view from a nib is -initWithCoder:, not -init. From the UIView reference page:

initWithCoder:—Implement this method if you load your view from an
Interface Builder nib file and your view requires custom
initialization.

Moreover, if you’re instantiating the view programmatically, the usual initializer is -initWithFrame:.

So, change your -init method to -initWithCoder:, or implement -initWithCoder: such that it calls your -init.