Display CollectionViewCell in starting position - ios

Question

I created a collection view cell with the Xib file. And I have only one cell, but that cell displaying in the center of the collectionView. I want to display cell at starting position of the collectionView.
I fixed contentInset in viewDidLoad and loading cell xib file here,
_listCollectionView.contentInset = UIEdgeInsetsMake(0 , 0, 0, 0);
And my cell size is
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
return CGSizeMake(156,140);
}
Cell displaying like this.

Answer 1

Im not very clear with your question but i think what you are referring to is to align the collectionnView element to the view . You have to use UICollectionViewLayoutAttributes or layoutAttributesforElements to achieve this . Take look at the below code and to make if you want it in Objective c.
-(NSArray *)layoutAttributesForElementsInRect:(CGRect)rect {
NSArray *attributes = [super layoutAttributesForElementsInRect:rect];
CGFloat leftMargin = self.sectionInset.left; //initalized to silence compiler, and actaully safer, but not planning to use.
CGFloat maxY = -1.0f;
//this loop assumes attributes are in IndexPath order
for (UICollectionViewLayoutAttributes *attribute in attributes) {
if (attribute.frame.origin.y >= maxY) {
leftMargin = self.sectionInset.left;
}
attribute.frame = CGRectMake(leftMargin, attribute.frame.origin.y,
attribute.frame.size.width, attribute.frame.size.height);
leftMargin += attribute.frame.size.width + self.minimumInteritemSpacing;
maxY = MAX(CGRectGetMaxY(attribute.frame), maxY);
}
return attributes;
}

Answer 2

In collectionView: cellForItemAtIndexPath: function i made changes like this.
Here just i fixed my collectionviewcell x origin position to 0 after loading the cell.
deviceCell= (DeviceCollectionViewCell *)[collectionView dequeueReusableCellWithReuseIdentifier:#"DeviceCollectionViewCell" forIndexPath:indexPath];
if (listArray.count == 1) {//Here i fixed the my cell x origin position
CGRect frameRect = deviceCell.frame;//Copy cell frame
frameRect.origin.x = 0;//Set cell origin.x
deviceCell.frame = frameRect;//Reset frame
}