Fetching reference to superview from UITextField ?

Question

Hi all,

I have created three UIImageViews. I then added a UITextField to each image as a subview.

When the user clicks on the text field I want to capture which UIImageView ths text field belongs to. I am trying the following code :

-(void)textFieldDidBeginEditing : (UITextField *)textField {


textField = retainedObject;

MyPicture *capture = nil;

for (UIImageView *oneView in retainedObject.superview) {

    if ([oneView isMemberOfClass:[myPicture class]])
    capture = (UIImageView *)oneView;

}

However I get an error that UIView may not respond to count by enumeration. It looks like the superview of the textfield is UIView rather than UIImageView perhaps ? Can anybody help solve this ?

Thanks,

Martin

Answer 1

A UIView's superView is assumed to be a UIView. However, you can still cast it as a UIImageView, and call UIImageView methods on it, but just make sure it will always be a UIImageView without exception, as otherwise it will crash.

Source: My own applications ;)