UI code works but change to XIB failed - ios

Question

the code below works
#interface MyUICollectionViewCell : UICollectionViewCell {
}
#implementation UICollectionViewCell
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
self = [super initWithFrame:frame];
if (self) {
_moreView = [[UIView alloc] init];
_moreView.backgroundColor = [UIColor clearColor];
_moreView.frame = CGRectMake(self.frame.size.width - 70, 0, 45, 37);
[self addSubview:_moreView];
_moreView.userInteractionEnabled = YES;
UITapGestureRecognizer *tapMoreView = [[UITapGestureRecognizer alloc]initWithTarget:self action:#selector(goToDoSomething)];
[_moreView addGestureRecognizer:tapMoreView];
}
return self;
}
return self;
}
- (void)doSomeThing
{
}
when I touch the subview (gray block), it will trigger the event,
but I change to XIB(the sub view links to IBOutlet mUIView), and change the code as below, goToDoSomething cannot be triggered.
Your comment welcome
#interface MyUICollectionViewCell : UICollectionViewCell {
IBOutlet UIView *mUIView;
}
#implementation UICollectionViewCell
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
self = [super initWithFrame:frame];
if (self) {
NSArray *nibView = [[NSBundle mainBundle] loadNibNamed:#"MyUICollectionViewCell"owner:self options:nil];
UIView *bw = [nibView objectAtIndex:0] ;
bw.userInteractionEnabled = YES;
[self.contentView addSubview:bw];
mUIView.userInteractionEnabled = YES;
UITapGestureRecognizer *tapMoreView = [[UITapGestureRecognizer alloc]initWithTarget:self action:#selector(goToDoSomething)];
[mUIView addGestureRecognizer:tapMoreView];
}
return self;
}
return self;
}
- (void)doSomeThing
{
}