Remove a view from one view and add it to another

Question

I am trying to find all my views that are in the nib and add them to my content view.

This is what I have, It successfully removes the view from self.view but it does not add it to self.contentView

for (UIView *view in self.view.subviews) {
    if (view.tag != 666) {
        [view removeFromSuperview];
        [self.contentView addSubview:view];
    }
}

Any help would be appreciated.

Answer 1

The issue in your code is, when you call removeFromSuperview the view will be released by the parent view. No need of calling removeFromSuperview, just add it as subview of another view will remove it from it's current parentView.

So use:

for (UIView *view in self.view.subviews)
{
    if (view.tag != 666)
    {
        [self.contentView addSubview:view];
    }
}

According to UIView Class Reference:

addSubview:

Adds a view to the end of the receiver’s list of subviews.

- (void)addSubview:(UIView *)view

Parameters

view

The view to be added. This view is retained by the receiver. After being added, this view appears on top of any other subviews. 

Discussion

This method retains view and sets its next responder to the receiver, which is its new superview.

Views can have only one superview. If view already has a superview and that view is not the receiver, this method removes the previous superview before making the receiver its new superview.

Answer 2

When you remove your view from superView It will release from memory. So in your case you need to do this:

UINib *infoNib = [UINib nibWithNibName:@"YourXIBFileName" bundle:nil];

NSArray *topLevelObjects = [infoNib instantiateWithOwner:self options:nil];

UIView *infoView = [topLevelObjects objectAtIndex:0];
for (UIView *view in infoView.subviews) {
        [self.contentView addSubview:view];
    }
}