Multiple Section in UICollectionView
Make sure assigning DataSource & Delegate to CollectionView
1.Give number of sections you wanna show using below method
func numberOfSections(in collectionView: UICollectionView) -> Int {
return 2
}
2.Set item count of each sections for CollectionView using below method.
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return (section == 0) ? list.count : list2.count
}
3.Assigning cell for each item to CollectionView.
public func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
//If you are using multiple cells based on section make condition
if indexPath.section == 0 {
//make sure the identifier of your cell for first section
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell1", for: indexPath)
// do your stuffs
return cell
}else{
//make sure the identifier of your cell for second section
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell2", for: indexPath)
// do your stuffs
return cell
}
}
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christ2702
I'm a programmer, a system analyst, a network administrator, a consultant, etc from Indonesia. I've graduated from University of Surabaya. My academic major is Computer Science with Artificial Intelligence concentration. I like to do some research about developing a program or just analyst my client's needed. I'm still a beginner who needs guidance and help from others who are more experienced. So please, don't hesitate to ask or help me, if I make a mistake. Thank you
Updated on June 04, 2022Comments
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christ2702 almost 2 years
I was building an iOS app for my hospital using collection view. However, I need to use multiple sections for the specialist clinic depends on the purpose. I already completed the code if it's just for 1 section. when I try to make it 2 sections, it always returns a nil value.
please check my code below
public func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) if indexPath.section == 0 { var buttonSpecialist = cell.viewWithTag(1) as! UIButton buttonSpecialist.setTitle(list[indexPath.row].SpecialtyName, for: .normal) let btnimg = try? UIImage(data: Data(contentsOf: URL(string: list[indexPath.row].ImageUrl)!)) var newimg = imageResize(image: btnimg as! UIImage, scaledTo: CGSize(width: 50, height: 50)) buttonSpecialist.setImage(newimg, for: .normal) buttonSpecialist.contentMode = .center buttonSpecialist.imageView?.contentMode = .scaleAspectFit //let sign: Int = imageOnTop ? 1 : -1 let imageSize: CGSize? = buttonSpecialist.imageView?.frame.size buttonSpecialist.titleEdgeInsets = UIEdgeInsetsMake(((imageSize?.height)! + 5) * 1, -(imageSize?.width)!, 0, 0) let titleSize: CGSize? = buttonSpecialist.titleLabel?.bounds.size buttonSpecialist.imageEdgeInsets = UIEdgeInsetsMake(-((titleSize?.height)! + 5) * 1, 0, 0, -(titleSize?.width)!) cell.layer.borderWidth = 1.0 cell.layer.borderColor = UIColor.black.cgColor } else if indexPath.section == 1 { var buttonSpecialist = cell.viewWithTag(1) as! UIButton buttonSpecialist.setTitle(list2[indexPath.row].SpecialtyName, for: .normal) let btnimg = try? UIImage(data: Data(contentsOf: URL(string: list2[indexPath.row].ImageUrl)!)) var newimg = imageResize(image: btnimg as! UIImage, scaledTo: CGSize(width: 50, height: 50)) buttonSpecialist.setImage(newimg, for: .normal) buttonSpecialist.contentMode = .center buttonSpecialist.imageView?.contentMode = .scaleAspectFit //let sign: Int = imageOnTop ? 1 : -1 let imageSize: CGSize? = buttonSpecialist.imageView?.frame.size buttonSpecialist.titleEdgeInsets = UIEdgeInsetsMake(((imageSize?.height)! + 5) * 1, -(imageSize?.width)!, 0, 0) let titleSize: CGSize? = buttonSpecialist.titleLabel?.bounds.size buttonSpecialist.imageEdgeInsets = UIEdgeInsetsMake(-((titleSize?.height)! + 5) * 1, 0, 0, -(titleSize?.width)!) cell.layer.borderWidth = 1.0 cell.layer.borderColor = UIColor.black.cgColor }
The main problem here is, I didn't know how to set the specific cell for the specific section. I already using 'IF' inside the function 'cellforindexpath', but it didn't worked.
this is my return number of items in section
func numberOfSections(in collectionView: UICollectionView) -> Int { // #warning Incomplete implementation, return the number of sections return 2 } func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int { // #warning Incomplete implementation, return the number of items if section == 0 { return list.count } else if section == 1{ return list2.count } return 0 }
please help me
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KKRocks almost 7 yearsadd numberofSection method .
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alanlo almost 7 yearsWhat is the value you return in the method numberOfSections(in:)? Are you sure the code segment for the condition "indexPath.section == 1" is actually executed?
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Aravind A R almost 7 years@christ2702 are you getting the cell as nil ?
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christ2702 almost 7 yearsI want the same cell but, the content inside the cell was different
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Dharma almost 7 years@christ2702 then simply put let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell1", for: indexPath) at the top method.
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christ2702 almost 7 years1 more question. how to add section header in each section?
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christ2702 almost 7 yearsplease check my another problem too : stackoverflow.com/questions/44614743/…